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MERITOR® MTA SERIES TRAILER AIR SUSPENSION SYSTEMS
PB-10108
TABLE OF CONTENTS
MTA23T Explode and BOM ............................................................................................4
Build Your OEM MTA23T Suspension .............................................................................6
Build Your Own MTA23T Suspension .............................................................................8
MTA25T Explode and BOM ............................................................................................10
Build Your OEM MTA25T Suspension .............................................................................12
Build Your Own MTA25T Suspension .............................................................................14
MTA30T Explode and BOM ............................................................................................16
Build Your OEM MTA30T Suspension .............................................................................18
Build Your Own MTA30T Suspension .............................................................................20
MTA Fully Dressed Axle Beam Specs .............................................................................22
MTA25L Explode and BOM ............................................................................................24
MTA30L Explode and BOM ............................................................................................26
Repair Kits and Components ........................................................................................28
MTA23T, MTA25T and MTA30T Lift Kits ..........................................................................30
MTA Service Beams ......................................................................................................31
Model Nomenclature .....................................................................................................33
4 U.S. 888-725-9355 Canada 800-387-3889
MTA23T SUSPENSION
Item Description Part Number Qty. Comments
1 Roadside Hanger (Standard Models) 1 Includes Item 18
14” Ride Height (Weld-On) A1-3152-G-1229
15” Ride Height (Weld-On) A1-3152-H-1230
16” Ride Height (Weld-On) A1-3152-J-1232
17” Ride Height (Weld-On) A1-3152-K-1233
14” Ride Height (Bolt-On 9/16” Dia. Holes) A5-3152-G-1229
15” Ride Height (Bolt-On 9/16” Dia. Holes) A5-3152-H-1230
16” Ride Height (Bolt-On 9/16” Dia. Holes) A5-3152-J-1232
17” Ride Height (Bolt-On 9/16” Dia. Holes) A5-3152-K-1233
14” Ride Height (Bolt-On 11/16” Dia. Holes) A3-3152-G-1229
15” Ride Height (Bolt-On 11/16” Dia. Holes) A3-3152-H-1230
16” Ride Height (Bolt-On 11/16” Dia. Holes) A3-3152-J-1232
17” Ride Height (Bolt-On 11/16” Dia. Holes) A3-3152-K-1233
U.S. 888-725-9355 MeritorPartsOnline.com 5Canada 800-387-3889
MTA23T SUSPENSIONKey Description Part Number Qty. Comments
2 Concentric Alignment Collar 21226275 2
3 Hardened Washer M301530 6 See KITs 11352, 11350, 11351, 11356
4 Locknut 1227-R-1604 6 See KITs 11352, 11350, 11356
5 Flat Washer 1229-M-4979 8 See KIT 11356
6 Shock Absorber KIT A-7805-E-1019 2
7 Lower Shock Bolt S-21480-M-2 2 See KIT 11356
8 Curbside Hanger
(Standard Models)
1
14” Ride Height (Weld-On) A-3152-G-1229
15” Ride Height (Weld-On) A-3152-H-1230
16” Ride Height (Weld-On) A-3152-J-1232
17” Ride Height (Weld-On) A-3152-K-1233
14” Ride Height (Bolt-On 9/16” Dia. Holes) A4-3152-G-1229
15” Ride Height (Bolt-On 9/16” Dia. Holes) A4-3152-H-1230
16” Ride Height (Bolt-On 9/16” Dia. Holes) A4-3152-J-1232
17” Ride Height (Bolt-On 9/16” Dia. Holes) A4-3152-K-1233
14” Ride Height (Bolt-On 11/16” Dia. Holes) A2-3152-G-1229
15” Ride Height (Bolt-On 11/16” Dia. Holes) A2-3152-H-1230
16” Ride Height (Bolt-On 11/16” Dia. Holes) A2-3152-J-1232
17” Ride Height (Bolt-On 11/16” Dia. Holes) A2-3152-K-1233
9 Trailing Arm/Axle Subassembly --- 1 See page 11
10 Name Plate Not Sold Separately 1
11 Locknut 1227-M-1573 4 See KIT 11203
12 Air Spring Pedestal (Std. Ride Heights) 2
14” Ride Height 3305-W-2571
15” Ride Height A-3305-W-2571
16” Ride Height A1-3305-W-2571
17” Ride Height A2-3305-W-2571
13 Air Spring A-2258-H-1568 2
14 Plug Not Sold Separately 2 See KIT 11203
15 Locknut 1227-M-1573 2 See KIT 11203
16 Linkage Assembly 203159-5 1
17 Valve Assemblies
With Auto Dump A-7806-M-1053 1 See KIT 11354
Without Auto Dump A-7806-L-1052 1 See KIT 11355
18 Bracket Not Sold Separately 1 Included in Item 1
19 Locknut NL-24-1 2 See KITs 11354, 11355
20 Flat Washer WA-34 2 See KITs 11354, 11355
21 Wear Washer 21226663 4 See KITs 11350, 111351
22 Multi-Functional Pivot Bushing A-1225-N-1522 2 See KIT 11351
23 Eccentric Alignment Collar 21226276 2
24 Pivot Bushing Bolt S-21464-M-2 2 See KITs 11351, 11352, 11353
25 Upper Shock Bolt S-21488-M-2 2 See KIT 11356
6 U.S. 888-725-9355 Canada 800-387-3889
BUILD YOUR OEM MTA23T SUSPENSIONSTEPS PART NO. APPLICATION KIT
Step 1 — Choose your Frame Assembly
Frame Hanger 14” Hole 11/16” Painted, Bushing and Fasteners
KIT 11406
• A3-3152-G-1229 1
• A2-3152-G-1229 1
• 3305-W-2571 2
• 21226275 2
• 21226663 4
• A-1225-N-1522 2
• 21226276 2
• M301530 4
• 1227-R-1604 4
• S-21464-M-2 2
Frame Hanger 15” Hole 11/16” Painted, Bushing and Fasteners
KIT 11407
• A3-3152-H-1230 1
• A2-3152-H-1230 1
• A-3305-W-2571 2
• 21226275 2
• 21226663 4
• A-1225-N-1522 2
• 21226276 2
• M301530 4
• 1227-R-1604 4
• S-21464-M-2 2
Frame Hanger 16” Hole 11/16” Painted, Bushing and Fasteners
KIT 11408
• A3-3152-J-1230 1
• A2-3152-J-1230 1
• A-3305-W-2571 2
• 21226275 2
• 21226663 4
• A-1225-N-1522 2
• 21226276 2
• M301530 4
• 1227-R-1604 4
• S-21464-M-2 2
Frame Hanger 17” Hole 11/16” Painted, Bushing and Fasteners
KIT 11409
• A3-3152-K-1230 1
• A2-3152-K-1230 1
• A-3305-W-2571 2
• 21226275 2
• 21226663 4
• A-1225-N-1522 2
• 21226276 2
• M301530 4
• 1227-R-1604 4
• S-21464-M-2 2
U.S. 888-725-9355 MeritorPartsOnline.com 7Canada 800-387-3889
BUILD YOUR OEM MTA23T SUSPENSIONSTEPS PART NO. APPLICATION KIT
Step 2 — Choose your Service Beam
C36-3273-C107-SB Axle TQ Wall 5/8” Length 71.5” Arm Center 35”
C23-3273-C185-SB Axle TP Wall 5/8” Length 71.5” Arm Center 35”
X15-3273-J140-SB Axle TQ Wall 5/8” Length 77.5” Arm Center 41”
X54-3273-Q199-SB Axle TP Wall 5/8” Length 77.5” Arm Center 41”
C2-3273-P1420-SB Axle TQ Wall 5/8” Length 83.5” Arm Center 47”
C6-3273-C1433-SB Axle TP Wall 5/8” Length 71.5” Arm Center 47”
Step 3 — Choose your Shock and Spring
Air Spring and Shock Absorber
KIT 11376
• 1227-M-1573 6
• A-2258-H-1568 2
• M301530 2
• 1227-R-1604 2
• 1229-M-4979 8
• A-7805-F-1020 2
• S-21480-M-2 2
• S-21488-M-2 2
Step 4 — Choose your Axle Lift
MPS 5066 Axle Lift KIT
Step 5 — Choose your Control Valve
KIT 11354 Valve KIT with Auto Dump
KIT 11355 Valve KIT without Auto Dump
8 U.S. 888-725-9355 Canada 800-387-3889
BUILD YOUR OWN MTA23T SUSPENSIONSTEPS PART NO. APPLICATION KIT
Step 1 — Choose your Trailer/Arm Bushing
KIT 11350 Pivot Bolt and Bushing
KIT 11352 Pivot Bolt
Bushing Parts
KIT 11367
• 21226275 2
• 21226663 4
• A-1225-N-1522 2
• 21226276 2
Bushing and Fastener
KIT 11368
• 21226275 2
• 21226663 4
• A-1225-N-1522 2
• 21226276 2
• M301530 4
• 1227-R-1604 4
• S-21464-M-2 2
Fasteners for Bushings
KIT 11369
• 21226275 2
• 21226276 2
• M301530 4
• 1227-R-1604 2
• S-21464-M-2 2
• 21226663 4
Step 2 — Choose your Frame Assembly
Frame Hanger 14” Hole 11/16” Painted, Bushing and Fasteners
KIT 11406• A3-3152-G-1229 1
• A2-3152-G-1229 1
• 3305-W-2571 2
Frame Hanger 15” Hole 11/16” Painted, Bushing and Fasteners
KIT 11407• A3-3152-H-1230 1
• A2-3152-H-1230 1
• A-3305-W-2571 2
Frame Hanger 16” Hole 11/16” Painted, Bushing and Fasteners
KIT 11408• A3-3152-J-1230 1
• A2-3152-J-1230 1
• A-3305-W-2571 2
Frame Hanger 17” Hole 11/16” Painted, Bushing and Fasteners
KIT 11409• A3-3152-K-1230 1
• A2-3152-K-1230 1
• A-3305-W-2571 2
U.S. 888-725-9355 MeritorPartsOnline.com 9Canada 800-387-3889
BUILD YOUR OWN MTA23T SUSPENSIONSTEPS PART NO. APPLICATION KIT
Step 3 — Choose your Shock and Spring
KIT 11356 Fasteners for Shock Absorber
KIT 11203 Fasteners for Air Spring
Air Spring and Fasteners
KIT 11374• 1227-M-1573 6
• A-2258-H-1568 2
Shock Absorber and Fasteners
KIT 11375
• M301530 2
• 1227-R-1604 2
• 1229-M-4979 8
• A-7805-F-1020 2
• S-21480-M-2 2
• S-21488-M-2 2
Air Spring KIT and Shock Absorber KIT
KIT 11376
• 1227-M-1573 6
• A-2258-H-1568 2
• M301530 2
• 1227-R-1604 2
• 1229-M-4979 8
• A-7805-F-1020 2
• S-21480-M-2 2
• S-21488-M-2 2
Step 4 — Choose your Axle Lift
MPS 5066 Axle Lift KIT
KIT 11377 Air Springs
Step 5 — Choose your Control Valve
KIT 11354 Valve KIT with Auto Dump
KIT 11355 Valve KIT without Auto Dump
Step 6 — Choose your Rebuild KIT
Partial Rebuild KIT — Shock, Spring, Bushing
KIT 11378
• A-7805-F-1020 2
• A-2258-H-1568 2
• 21226663 4
• A-1225-N-1522 2
Complete Rebuild KIT
KIT 11379(contains KIT 11376 and KIT 11368)
• A-7805-F-1020 2
• A-2258-H-1568 2
• 21226663 4
• A-1225-N-1522 2
• 21226275 2
• M301530 2
• 1227-R-1604 2
• 1229-M-4979 8
• S-21480-M-2 2
• 1227-M-1573 6
• 1227-B-1614 2
• 21226276 2
• S-21464-M-2 2
• S-21488-M-2 2
10 U.S. 888-725-9355 Canada 800-387-3889
MTA25T SUSPENSION
Item Description Part Number Qty. Comments
1 Roadside Hanger (Standard Models) 1 Includes Item 18
14” Ride Height (Weld-On) A1-3152-Y-1221
15” Ride Height (Weld-On) A1-3152-Z-1222
16” Ride Height (Weld-On) A1-3152-A-1223
17” Ride Height (Weld-On) A1-3152-B-1224
14” Ride Height (Bolt-On 9/16” Dia. Holes) A5-3152-Y-1221
15” Ride Height (Bolt-On 9/16” Dia. Holes) A5-3152-Z-1222
16” Ride Height (Bolt-On 9/16” Dia. Holes) A5-3152-A-1223
17” Ride Height (Bolt-On 9/16” Dia. Holes) A5-3152-B-1224
14” Ride Height (Bolt-On 11/16” Dia. Holes) A3-3152-Y-1221
15” Ride Height (Bolt-On 11/16” Dia. Holes) A3-3152-Z-1222
16” Ride Height (Bolt-On 11/16” Dia. Holes) A3-3152-A-1223
17” Ride Height (Bolt-On 11/16” Dia. Holes) A3-3152-B-1224
U.S. 888-725-9355 MeritorPartsOnline.com 11Canada 800-387-3889
MTA25T SUSPENSIONItem Description Part Number Qty. Comments2 Concentric Alignment Collar 21226275 2
3 Hardened Washer M301530 6 See KITs 11351, 11353, 11356
4 Locknut 1227-R-1604 6 See KITs 11351, 11353, 11356
5 Flat Washer 1229-M-4979 8 See KIT 11356
6 Shock Absorber KIT A-7805-F-1020 2
7 Lower Shock Bolt S-21480-M-2 2 See KIT 11356
8 Curbside Hanger (Standard Models) 1
14” Ride Height (Weld-On) A-3152-Y-1221
15” Ride Height (Weld-On) A-3152-Z-1222
16” Ride Height (Weld-On) A-3152-A-1223
17” Ride Height (Weld-On) A-3152-B-1224
14” Ride Height (Bolt-On 9/16” Dia. Holes) A4-3152-Y-1221
15” Ride Height (Bolt-On 9/16” Dia. Holes) A4-3152-Z-1222
16” Ride Height (Bolt-On 9/16” Dia. Holes) A4-3152-A-1223
17” Ride Height (Bolt-On 9/16” Dia. Holes) A4-3152-B-1224
14” Ride Height (Bolt-On 11/16” Dia. Holes) A2-3152-Y-1221
15” Ride Height (Bolt-On 11/16” Dia. Holes) A2-3152-Z-1222
16” Ride Height (Bolt-On 11/16” Dia. Holes) A2-3152-A-1223
17” Ride Height (Bolt-On 11/16” Dia. Holes) A2-3152-B-1224
9 Trailing Arm/Axle Subassembly --- 1 See page 11
10 Name Plate Not Sold Separately 1
11 Locknut 1227-M-1573 4 See KIT 11203
12 Air Spring Pedestal (Std. Ride Heights) 2
14” Ride Height 3305-F-2606
15” Ride Height A-3305-F-2606
16” Ride Height A1-3305-F-2606
17” Ride Height A2-3305-F-2606
13 Air Spring A-2258-P-1576 2
14 Plug Not Sold Separately 2 See KIT 11203
15 Locknut 1227-M-1573 2 See KIT 11203
16 Linkage Assembly 203159-5 1
17 Valve Assemblies
With Auto Dump A-7806-M-1053 1 See KIT 11354
Without Auto Dump A-7806-L-1052 1 See KIT 11355
18 Bracket Not Sold Separately 1 Included in Item 1
19 Locknut NL-24-1 2 See KITs 11354, 11355
20 Flat Washer WA-34 2 See KITs 11354, 11355
21 Wear Washer 21226663 4 See KIT 11351
22 Multi-Functional Pivot Bushing A-1225-C-1537 2 See KIT 11351
23 Eccentric Alignment Collar 21226276 2
24 Pivot Bushing Bolt S-21472-M-2 2 See KITs 11351, 11353
25 Upper Shock Bolt S-21488-M-2 2 See KIT 11356
12 U.S. 888-725-9355 Canada 800-387-3889
BUILD YOUR OEM MTA25T SUSPENSIONSTEPS PART NO. APPLICATION KIT
Step 1 — Choose your Frame Assembly
Frame Hanger 14” Hole 11/16” Painted, Bushing and Fasteners
KIT 11411
• A3-3152-Y-1221 1
• A2-3152-Y-1221 1
• 3305-F-2606 2
• 21226275 2
• 21226663 4
• A-1225-N-1537 2
• 21226276 2
• M301530 4
• 1227-R-1604 4
• S-21472-M-2 2
Frame Hanger 15” Hole 11/16” Painted, Bushing and Fasteners
KIT 11412
• A3-3152-Z-1222 1
• A2-3152-Z-1222 1
• A-3305-F-2606 2
• 21226275 2
• 21226663 4
• A-1225-N-1537 2
• 21226276 2
• M301530 4
• 1227-R-1604 4
• S-21472-M-2 2
Frame Hanger 16” Hole 11/16” Painted, Bushing and Fasteners
KIT 11413
• A3-3152-A-1223 1
• A2-3152-A-1223 1
• A1-3305-F-2606 2
• 21226275 2
• 21226663 4
• A-1225-N-1537 2
• 21226276 2
• M301530 4
• 1227-R-1604 4
• S-21472-M-2 2
Frame Hanger 17” Hole 11/16” Painted, Bushing and Fasteners
KIT 11414
• A3-3152-B-1224 1
• A2-3152-B-1224 1
• A2-3305-F-2606 2
• 21226275 2
• 21226663 4
• A-1225-N-1537 2
• 21226276 2
• M301530 4
• 1227-R-1604 4
• S-21472-M-2 2
U.S. 888-725-9355 MeritorPartsOnline.com 13Canada 800-387-3889
BUILD YOUR OEM MTA25T SUSPENSIONSTEPS PART NO. APPLICATION KIT
Step 2 — Choose your Service Beam
C37-3273-C107-SB Axle TQ Wall 5/8” Length 71.5” Arm Center 35”
C20-3273-C185-SB Axle TP Wall 5/8” Length 71.5” Arm Center 35”
X12-3273-J140-SB Axle TQ Wall 5/8” Length 77.5” Arm Center 41”
X56-3273-Q199-SB Axle TP Wall 5/8” Length 77.5” Arm Center 41”
C3-3273-P1420-SB Axle TQ Wall 5/8” Length 83.5” Arm Center 47”
C7-3273-C1433-SB Axle TP Wall 5/8” Length 71.5” Arm Center 47”
Step 3 — Choose your Shock and Spring
Air Spring and Shock Absorber
KIT 11389
• 1227-M-1573 6
• A-2258-H-1568 2
• M301530 2
• 1227-R-1604 2
• 1229-M-4979 8
• A-7805-F-1020 2
• S-21480-M-2 2
• S-21488-M-2 2
Step 4 — Choose your Axle Lift
MPS 5055 Axle Lift KIT
Step 5 — Choose your Control Valve
KIT 11354 Valve KIT with Auto Dump
KIT 11355 Valve KIT without Auto Dump
14 U.S. 888-725-9355 Canada 800-387-3889
BUILD YOUR OWN MTA25T SUSPENSIONSTEPS PART NO. APPLICATION KIT
Step 1 — Choose your Trailer/Arm Bushing
KIT 11351 Pivot Bolt and Bushing
KIT 11353 Pivot Bolt
Bushing Parts
KIT 11380
• 21226275 2
• 21226663 4
• A-1225-N-1522 2
• 21226276 2
Bushing and Fastener
KIT 11381
• 21226275 2
• 21226663 4
• A-1225-N-1522 2
• 21226276 2
• M301530 4
• 1227-R-1604 4
• S-21464-M-2 2
Fasteners for Bushings
KIT 11382
• 21226275 2
• 21226276 2
• M301530 4
• 1227-R-1604 2
• S-21464-M-2 2
• 21226663 4
Step 2 — Choose your Frame Assembly
Frame Hanger 14” Hole 11/16” Painted, Bushing and Fasteners
KIT 11483• A3-3152-Y-1221 1
• A2-3152-Y-1221 1
• 3305-W-2571 2
Frame Hanger 15” Hole 11/16” Painted, Bushing and Fasteners
KIT 11484• A3-3152-Z-1222 1
• A2-3152-Z-1222 1
• A-3305-F-2606 2
Frame Hanger 16” Hole 11/16” Painted, Bushing and Fasteners
KIT 11485• A3-3152-A-1223 1
• A2-3152-A-1223 1
• A-3305-F-2606 2
Frame Hanger 17” Hole 11/16” Painted, Bushing and Fasteners
KIT 11486• A3-3152-B-1224 1
• A2-3152-B-1224 1
• A-3305-F-2606 2
U.S. 888-725-9355 MeritorPartsOnline.com 15Canada 800-387-3889
BUILD YOUR OWN MTA25T SUSPENSIONSTEPS PART NO. APPLICATION KIT
Step 3 — Choose your Shock and Spring
KIT 11356 Fasteners for Shock Absorber
KIT 11203 Fasteners for Air Spring
Air Spring and Fasteners
KIT 11387• 1227-M-1573 6
• A-2258-P-1576 2
Shock Absorber and Fasteners
KIT 11375
• M301530 2
• 1227-R-1604 2
• 1229-M-4979 8
• A-7805-F-1020 2
• S-21480-M-2 2
• S-21488-M-2 2
Air Spring KIT and Shock Absorber KIT
KIT 11389
• 1227-M-1573 6
• A-2258-P-1576 2
• M301530 2
• 1227-R-1604 2
• 1229-M-4979 8
• A-7805-F-1020 2
• S-21480-M-2 2
• S-21488-M-2 2
Step 4 — Choose your Axle Lift
MPS 5055 Axle Lift KIT
KIT 11377 Air Springs
Step 5 — Choose your Control Valve
KIT 11354 Valve KIT with Auto Dump
KIT 11355 Valve KIT without Auto Dump
Step 6 — Choose your Rebuild KIT
Partial Rebuild KIT — Shock, Spring, Bushing
KIT 11391
• A-7805-F-1020 2
• A-2258-P-1576 2
• 21226663 4
• A-1225-N-1537 2
Complete Rebuild KIT
KIT 11392(contains KIT 11389 and KIT 11381)
• A-7805-F-1020 2
• A-2258-P-1576 2
• 21226663 4
• A-1225-N-1537 2
• 21226275 2
• M301530 2
• 1227-R-1604 2
• 1229-M-4979 8
• S-21480-M-2 2
• 1227-M-1573 6
• 21226276 2
• S-21464-M-2 2
• S-21488-M-2 2
16 U.S. 888-725-9355 Canada 800-387-3889
MTA30T SUSPENSION
Item Description Part Number Qty. Comments
1 Roadside Hanger (Standard Models) 1 Includes Item 18
14” Ride Height (Weld-On) A1-3152-C-1225
15” Ride Height (Weld-On) A1-3152-D-1226
16” Ride Height (Weld-On) A1-3152-E-1227
17” Ride Height (Weld-On) A1-3152-F-1228
14” Ride Height (Bolt-On 9/16” Dia. Holes) A5-3152-C-1225
15” Ride Height (Bolt-On 9/16” Dia. Holes) A5-3152-D-1226
16” Ride Height (Bolt-On 9/16” Dia. Holes) A5-3152-E-1227
17” Ride Height (Bolt-On 9/16” Dia. Holes) A5-3152-F-1228
14” Ride Height (Bolt-On 11/16” Dia. Holes) A3-3152-C-1225
15” Ride Height (Bolt-On 11/16” Dia. Holes) A3-3152-D-1226
16” Ride Height (Bolt-On 11/16” Dia. Holes) A3-3152-E-1227
17” Ride Height (Bolt-On 11/16” Dia. Holes) A3-3152-F-1228
U.S. 888-725-9355 MeritorPartsOnline.com 17Canada 800-387-3889
MTA30T SUSPENSIONItem Description Part Number Qty. Comments
2 Concentric Alignment Collar 21226275 2
3 Hardened Washer M301530 6 See KITs 11351, 11353, 11356
4 Locknut 1227-R-1604 6 See KITs 11351, 11353, 11356
5 Flat Washer 1229-M-4979 8 See KIT 11356
6 Shock Absorber KIT A-7805-F-1020 2
7 Lower Shock Bolt S-21480-M-2 2 See KIT 11356
8 Curbside Hanger (Standard Models) 1
14” Ride Height (Weld-On) A-3152-C-1225
15” Ride Height (Weld-On) A-3152-D-1226
16” Ride Height (Weld-On) A-3152-E-1227
17” Ride Height (Weld-On) A-3152-F-1228
14” Ride Height (Bolt-On 9/16” Dia. Holes) A4-3152-C-1225
15” Ride Height (Bolt-On 9/16” Dia. Holes) A4-3152-D-1226
16” Ride Height (Bolt-On 9/16” Dia. Holes) A4-3152-E-1227
17” Ride Height (Bolt-On 9/16” Dia. Holes) A4-3152-F-1228
14” Ride Height (Bolt-On 11/16” Dia. Holes) A2-3152-C-1225
15” Ride Height (Bolt-On 11/16” Dia. Holes) A2-3152-D-1226
16” Ride Height (Bolt-On 11/16” Dia. Holes) A2-3152-E-1227
17” Ride Height (Bolt-On 11/16” Dia. Holes) A2-3152-F-1228
9 Trailing Arm/Axle Subassembly --- 1 See page 11
10 Name Plate Not Sold Separately 1
11 Locknut 1227-M-1573 4 See KIT 11203
12 Air Spring Pedestal (Std. Ride Heights) 2
14” Ride Height 3305-F-2606
15” Ride Height A-3305-F-2606
16” Ride Height A1-3305-F-2606
17” Ride Height A2-3305-F-2606
13 Air Spring A-2258-Q-1577 2
14 Plug Not Sold Separately 2 See KIT 11203
15 Locknut 1227-M-1573 2 See KIT 11203
16 Linkage Assembly 203159-5 1
17 Valve Assemblies
With Auto Dump A-7806-M-1053 1 See KIT 11354
Without Auto Dump A-7806-L-1052 1 See KIT 11355
18 Bracket Not Sold Separately 1 Included in Item 1
19 Locknut NL-24-1 2 See KITs 11354, 11355
20 Flat Washer WA-34 2 See KITs 11354, 11355
21 Wear Washer 21226663 4 See KIT 11351
22 Multi-Functional Pivot Bushing A-1225-C-1537 2 See KIT 11351
23 Eccentric Alignment Collar 21226276 2
24 Pivot Bushing Bolt S-21472-M-2 2 See KITs 11351, 11353
25 Upper Shock Bolt S-21488-M-2 2 See KIT 11356
18 U.S. 888-725-9355 Canada 800-387-3889
BUILD YOUR OEM MTA30T SUSPENSIONSTEPS PART NO. APPLICATION KIT
Step 1 — Choose your Frame Assembly
Frame Hanger 14” Hole 11/16” Painted, Bushing and Fasteners
KIT 11415
• A3-3152-C-1225 1
• A2-3152-C-1225 1
• 3305-F-2606 2
• 21226275 2
• 21226663 4
• A-1225-N-1537 2
• 21226276 2
• M301530 4
• 1227-R-1604 4
• S-21472-M-2 2
Frame Hanger 15” Hole 11/16” Painted, Bushing and Fasteners
KIT 11416
• A3-3152-D-1226 1
• A2-3152-D-1226 1
• A-3305-F-2606 2
• 21226275 2
• 21226663 4
• A-1225-N-1537 2
• 21226276 2
• M301530 4
• 1227-R-1604 4
• S-21472-M-2 2
Frame Hanger 16” Hole 11/16” Painted, Bushing and Fasteners
KIT 11417
• A3-3152-E-1227 1
• A2-3152-E-1227 1
• A1-3305-F-2606 2
• 21226275 2
• 21226663 4
• A-1225-N-1537 2
• 21226276 2
• M301530 4
• 1227-R-1604 4
• S-21472-M-2 2
Frame Hanger 17” Hole 11/16” Painted, Bushing and Fasteners
KIT 11418
• A3-3152-F-1228 1
• A2-3152-F-1228 1
• A2-3305-F-2606 2
• 21226275 2
• 21226663 4
• A-1225-N-1537 2
• 21226276 2
• M301530 4
• 1227-R-1604 4
• S-21472-M-2 2
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BUILD YOUR OEM MTA30T SUSPENSIONSTEPS PART NO. APPLICATION KIT
Step 2 — Choose your Service Beam
C5-3273-P1160-SB Axle TQ Wall 5/8” Length 71.5” Arm Center 35”
C7-3273-Q1213-SB Axle TP Wall 5/8” Length 71.5” Arm Center 35”
C7-3273-R1162-SB Axle TQ Wall 5/8” Length 77.5” Arm Center 41”
C12-3273-K1155-SB Axle TP Wall 5/8” Length 77.5” Arm Center 41”
C-3273-T1398-SB Axle TQ Wall 5/8” Length 83.5” Arm Center 47”
C-3273-V1559-SB Axle TPS Wall 5/8” Length 71.5” Arm Center 47”
Step 3 — Choose your Shock and Spring
Air Spring and Shock Absorber
KIT 11402
• 1227-M-1573 6
• A-2258-Q-1577 2
• M301530 2
• 1227-R-1604 2
• 1229-M-4979 8
• A-7805-F-1020 2
• S-21480-M-2 2
• S-21488-M-2 2
Step 4 — Choose your Axle Lift
MPS 5056 Axle Lift KIT
Step 5 — Choose your Control Valve
KIT 11354 Valve KIT with Auto Dump
KIT 11355 Valve KIT without Auto Dump
20 U.S. 888-725-9355 Canada 800-387-3889
BUILD YOUR OWN MTA30T SUSPENSIONSTEPS PART NO. APPLICATION KIT
Step 1 — Choose your Trailer/Arm Bushing
KIT 11351 Pivot Bolt and Bushing
KIT 11353 Pivot Bolt
Bushing Parts
KIT 11380
• 21226275 2
• 21226663 4
• A-1225-N-1537 2
• 21226276 2
Bushing and Fastener
KIT 11381
• 21226275 2
• 21226663 4
• A-1225-N-1537 2
• 21226276 2
• M301530 4
• 1227-R-1604 4
• S-21464-M-2 2
Fasteners for Bushings
KIT 11382
• 21226275 2
• 21226276 2
• M301530 4
• 1227-R-1604 4
• S-21464-M-2 2
Step 2 — Choose your Frame Assembly
Frame Hanger 14” Hole 11/16” Painted, Bushing and Fasteners
KIT 11396• A3-3152-C-1225 1
• A2-3152-C-1225 1
• 3305-F-2606 2
Frame Hanger 15” Hole 11/16” Painted, Bushing and Fasteners
KIT 11397• A3-3152-D-1226 1
• A2-3152-D-1226 1
• A-3305-F-2606 2
Frame Hanger 16” Hole 11/16” Painted, Bushing and Fasteners
KIT 11398• A3-3152-E-1227 1
• A2-3152-E-1227 1
• A-3305-F-2606 2
Frame Hanger 17” Hole 11/16” Painted, Bushing and Fasteners
KIT 11399• A3-3152-F-1228 1
• A2-3152-F-1228 1
• A-3305-F-2606 2
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BUILD YOUR OWN MTA30T SUSPENSIONSTEPS PART NO. APPLICATION KIT
Step 3 — Choose your Shock and Spring
KIT 11356 Fasteners for Shock Absorber
KIT 11203 Fasteners for Air Spring
Air Spring and Fasteners
KIT 11400• 1227-M-1573 6
• A-2258-Q-1577 2
Shock Absorber and Fasteners
KIT 11375
• M301530 2
• 1227-R-1604 2
• 1229-M-4979 8
• A-7805-F-1020 2
• S-21480-M-2 2
• S-21488-M-2 2
Air Spring KIT and Shock Absorber KIT
KIT 11402
• 1227-M-1573 6
• A-2258-Q-1577 2
• M301530 2
• 1227-R-1604 2
• 1229-M-4979 8
• A-7805-F-1020 2
• S-21480-M-2 2
• S-21488-M-2 2
Step 4 — Choose your Axle Lift
MPS 5055 Axle Lift KIT
KIT 11377 Air Springs
Step 5 — Choose your Control Valve
KIT 11354 Valve KIT with Auto Dump
KIT 11355 Valve KIT without Auto Dump
Step 6 — Choose your Rebuild KIT
Partial Rebuild KIT — Shock, Spring, Bushing
KIT 11404
• A-7805-F-1020 2
• A-2258-P-1576 2
• 21226663 4
• A-1225-N-1537 2
Complete Rebuild KIT
KIT 11405 (contains KIT 11402 and KIT 11381)
• A-7805-F-1020 2
• A-2258-P-1576 2
• 21226663 4
• A-1225-N-1537 2
• 21226275 2
• M301530 2
• 1227-R-1604 2
• 1229-M-4979 8
22 U.S. 888-725-9355 Canada 800-387-3889
MTA FULLY DRESSED AXLE BEAM SPECS
included trailing arms, pivot bushing installed axle dress-up with S’cam brake 16,5”x7”, automatic slack adjuster and TSE chambers.
PART NUMBER AXLE DRESS-UP CAPACITY AXLE MODEL
WALL THINK-NESS
AXLE TRACK LENGTH
TRAILING ARM CENTERS
TOP/LOW MOUNT BRAKE TYPE
MTA23T000TN1615 23T TN 1/2” 71.5” 35” Top Q PLUS
MTA23T000TN1616 23T TN 1/2” 77.5” 41” Top Q PLUS
MTA23T000TP1620 23T TP 1/2” 71.5” 35” Top Q PLUS
MTA23T000TP1629 23T TP 1/2” 77.5” 41” Top Q PLUS
MTA25T000TQ1617 25T TQ 5/8” 71.5” 35” Top Q PLUS
MTA25T000TQ1618 25T TQ 5/8” 77.5” 41” Top Q PLUS
MTA25T000TP1621 25T TP 5/8” 71.5” 35” Top Q PLUS
MTA25T000TP1622 25T TP 5/8” 77.5” 41” Top Q PLUS
MTA30T000TQ1628 30T TQ 3/4” 71.5” 35” Top Q PLUS
MTA30T000TQ1619 30T TQ 3/4” 77.5” 41” Top Q PLUS
MTA30T000TP1623 30T TP 3/4” 71.5” 35” Top Q PLUS
MTA30T000TP1624 30T TP 3/4” 77.5” 41” Top Q PLUS
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MTA FULLY DRESSED AXLE BEAM SPECS
BRAKE SIZECAM
LENGTH Cam LocationFRICTION MATERIAL
SLACK ADJUSTER CHAMBERS
ABS SENSOR Finish
PART NUMBER AXLE DRESS-UP
16.5”X7” Long Rear MA212 5.5” TSE 30/30 Y Paint MTA23T000TN161516.5”X7” Long Rear MA212 5.5” TSE 30/30 Y Paint MTA23T000TN161616.5”X7” Long Rear MA212 5.5” TSE 30/30 Y Paint MTA23T000TP162016.5”X7” Long Rear MA212 5.5” TSE 30/30 Y Paint MTA23T000TP1629
16.5”X7” Long Rear MA212 5.5” TSE 30/30 Y Paint MTA25T000TQ161716.5”X7” Long Rear MA212 5.5” TSE 30/30 Y Paint MTA25T000TQ161816.5”X7” Long Rear MA212 5.5” TSE 30/30 Y Paint MTA25T000TP162116.5”X7” Long Rear MA212 5.5” TSE 30/30 Y Paint MTA25T000TP1622
16.5”X7” Long Rear MA212 5.5” TSE 30/30 Y Paint MTA30T000TQ162816.5”X7” Long Rear MA212 5.5” TSE 30/30 Y Paint MTA30T000TQ161916.5”X7” Long Rear MA212 5.5” TSE 30/30 Y Paint MTA30T000TP162316.5”X7” Long Rear MA212 5.5” TSE 30/30 Y Paint MTA30T000TP1624
24 U.S. 888-725-9355 Canada 800-387-3889
MTA25L SUSPENSION
Item Description Part Number Qty. Comments
1 Roadside Hanger (Standard Models) 1
6.5” Ride Height (Weld-on) A1-3152-P-1238
7.5” Ride Height (Weld-on) A1-3152-P-1238
8.0” Ride Height (Weld-on) A1-3152-P-1238
9.0” Ride Height (Weld-on) A-3152-P-1238
12.0” Ride Height (Weld-on) A-3152-U-1243
14.0” Ride Height (Weld-on) A1-3152-U-1243
15.0” Ride Height (Weld-on) A2-3152-U-1243
16.0” Ride Height (Weld-on) A-3152-Y-1247
17.0” Ride Height (Weld-on) A1-3152-Y-1247
19.0” Ride Height (Weld-on) A2-3152-Y-1247
2 Concentric Alignment Collar 21226275 2
3 Hardened Washer M301530 10 See KITS 11351, 11353
4 Locknut 1227-R-1604 6 See KITS 11351, 11353
5 Shock Absorber KIT A-7805-S-1163 2
6 Lower Shock Bolt S-21440-Z-2 2
7 Curbside Hanger (Standard Models) 1
6.5” Ride Height (Weld-on) A1-3152-Q-1239
7.5” Ride Height (Weld-on) A1-3152-Q-1239
8.0” Ride Height (Weld-on) A1-3152-Q-1239
9.0” Ride Height (Weld-on) A-3152-Q-1239
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Item Description Part Number Qty. Comments
12.0” Ride Height (Weld-on) A-3152-V-1244
14.0” Ride Height (Weld-on) A2-3152-V-1244
15.0” Ride Height (Weld-on) A2-3152-V-1245
16.0” Ride Height (Weld-on) A-3152-Z-1248
17.0” Ride Height (Weld-on) A1-3152-Z-1248
19.0” Ride Height (Weld-on) A2-3152-Z-1248
8 Trailing Arm / Axle Subassembly - 1
9 Name Plate Not sold separately 1
10 Locknut 1227-M-1573 4
11 Air Spring Pedestal (Std. Ride Heights) 2
6.5” Ride Height (Weld-on) A-3305-W-2571
7.5” Ride Height (Weld-on) A-3305-W-2571
8.0” Ride Height (Weld-on) A-3305-W-2571
9.0” Ride Height (Weld-on) A-3305-W-2571
12.0” Ride Height (Weld-on) 3305-H-2998
14.0” Ride Height (Weld-on) A3-3305-W-2571
15.0” Ride Height (Weld-on) A4-3305-W-2571
16.0” Ride Height (Weld-on) A5-3305-W-2571
17.0” Ride Height (Weld-on) A6-3305-W-2571
19.0” Ride Height (Weld-on) A7-3305-W-2571
12 Air Spring 2
6.5” Ride Height (Weld-on) A-2258-S-1605
7.5” Ride Height (Weld-on) A-2258-S-1605
8.0” Ride Height (Weld-on) A-2258-S-1605
9.0” Ride Height (Weld-on) A-2258-R-1604
12.0” Ride Height (Weld-on) A-2258-T-1606
14.0” Ride Height (Weld-on) A-2258-T-1606
15.0” Ride Height (Weld-on) A-2258-T-1606
16.0” Ride Height (Weld-on) A-2258-T-1606
17.0” Ride Height (Weld-on) A-2258-T-1606
19.0” Ride Height (Weld-on) A-2258-T-1606
13 Plug Not sold separately 2
14 Screw S-288Z-2 4
15 Linkage Assembly 203159-9 1 See KITS MPS-5079, 5080, 5081, 5082
16 Valve Assemblies 1
With Auto Dump A-7806-Y-1065 See KITS MPS-5081, 5082
Without Auto Dump A-7806-X-1064 See KITS MPS-5079, 5080
17 Bracket Not sold separately 1 See KITS MPS-5079, 5080, 5081, 5082
18 Screw-Self Tapping 10-X-1348 2 See KITS MPS-5079, 5080, 5081, 5082
19 Locknut NL-24-M-1 2 See KITS MPS-5079, 5080, 5081, 5082
20 Flat Washer WA-34 2 See KITS MPS-5079, 5080, 5081, 5082
21 Wear Washer 21226663 4 See KIT 11351
22 Multi-Functional Pivot Bushing A-1225-C-1537 2 See KIT 11351
23 Eccentric Alignment Collar 21226276 2
24 Pivot Bushing Bolt S-21472-M-2 2 See KITS 11351, 11353
25 Upper Shock Bolt S-21448-Z-2 2
26 U.S. 888-725-9355 Canada 800-387-3889
MTA30L SUSPENSION
Item Description Part Number Qty. Comments
1 Roadside Hanger (Standard Models) 1
9.0” Ride Height (Weld-on) A-3152-L-1234
12.0” Ride Height (Weld-on) A-3152-S-1241
14.0” Ride Height (Weld-on) A1-3152-S-1241
15.0” Ride Height (Weld-on) A2-3152-S-1241
16.0” Ride Height (Weld-on) A-3152-W-1245
17.0” Ride Height (Weld-on) A1-3152-W-1245
19.0” Ride Height (Weld-on) A2-3152-W-1245
2 Concentric Alignment Collar 21226275 2
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Item Description Part Number Qty. Comments
3 Hardened Washer M301530 10 See KITS 11351, 11353
4 Locknut 1227-R-1604 6 See KITS 11351, 11353
5 Shock Absorber KIT A-7805-S-1163 2
6 Lower Shock Bolt S-21440-Z-2 2
7 Curbside Hanger (Standard Models) 1
9.0” Ride Height (Weld-on) A-3152-M-1235
12.0” Ride Height (Weld-on) A-3152-T-1242
14.0” Ride Height (Weld-on) A1-3152-T-1242
15.0” Ride Height (Weld-on) A2-3152-T-1242
16.0” Ride Height (Weld-on) A-3152-X-1246
17.0” Ride Height (Weld-on) A1-3152-X-1246
19.0” Ride Height (Weld-on) A2-3152-X-1246
8 Trailing Arm / Axle Subassembly 1
9 Name Plate 1
10 Locknut 1227-M-1573 4
11 Air Spring Pedestal (Std. Ride Heights) 2
9.0” Ride Height (Weld-on) A-3305-W-2571
12.0” Ride Height (Weld-on) 3305-H-2998
14.0” Ride Height (Weld-on) A3-3305-W-2571
15.0” Ride Height (Weld-on) A4-3305-W-2571
16.0” Ride Height (Weld-on) A5-3305-W-2571
17.0” Ride Height (Weld-on) A6-3305-W-2571
19.0” Ride Height (Weld-on) A7-3305-W-2571
12 Air Spring 2
9.0” Ride Height (Weld-on) A-2258-R-1604
12.0” Ride Height (Weld-on) A-2258-T-1606
14.0” Ride Height (Weld-on) A-2258-T-1606
15.0” Ride Height (Weld-on) A-2258-T-1606
16.0” Ride Height (Weld-on) A-2258-T-1606
17.0” Ride Height (Weld-on) A-2258-T-1606
19.0” Ride Height (Weld-on) A-2258-T-1606
13 Plug Not sold separately 2
14 Screw S-288Z-2 4
15 Linkage Assembly 203159-9 1
16 Valve Assemblies
With Auto Dump A-7806-Y-1065 See KIT MPS-5082
Without Auto Dump A-7806-X-1064 See KIT MPS-5080
17 Bracket Not sold separately 1 See KITS MPS-5080, 5082
18 Screw-Self Tapping 10-X-1348 2 See KITS MPS-5080, 5082
19 Locknut NL-24-M-1 2 See KITS MPS-5080, 5082
20 Flat Washer WA-34 2 See KITS MPS-5080, 5082
21 Wear Washer 21226663 4 See KIT 11351
22 Multi-Functional Pivot Bushing A-1225-C-1537 2 See KIT 11351
23 Eccentric Alignment Collar 21226276 2
24 Pivot Bushing Bolt S-21472-M-2 2 See KITS 11351, 11353
25 Upper Shock Bolt S-21448-Z-2 2
28 U.S. 888-725-9355 Canada 800-387-3889
KIT 11350 Pivot Bolt and Bushing KIT (MTA23T)Item Qty. Part Number Description
1 1 S-21464-M-2 Capscrew 7/8”-9 x 8”, Grade 8
2 1 M301530 Hardened Flat Washer - 7/8” ID
3 1 1227-R-1604 Lock Nut - 7/8”-9, Grade C
4 2 21226663 Wear Washer
5 1 A-1225-N-1522 Multi-Function Bushing
KIT 11351 Pivot Bolt and Bushing KIT (MTA25T, MTA30T, MTA25L & MTA30L)Item Qty. Part Number Description
1 1 S-21472-M-2 Capscrew 7/8”-9 x 9”, Grade 8
2 1 M301530 Hardened Flat Washer - 7/8” ID
3 1 1227-R-1604 Lock Nut - 7/8”-9, Grade C
4 2 21226663 Wear Washer
5 1 A-1225-C-1537 Multi-Function Bushing
KIT 11352 Pivot Bolt KIT (MTA23T)Item Qty. Part Number Description
1 1 S-21464-M-2 Capscrew 7/8”-9 x 8”, Grade 8
2 1 M301530 Hardened Flat Washer - 7/8” ID
3 1 1227-R-1604 Lock Nut - 7/8”-9, Grade C
KIT 11353 Pivot Bolt KIT (MTA25T, MTA30T, MTA25L & MTA30L)Item Qty. Part Number Description
1 1 S-21472-M-2 Capscrew 7/8”-9 x 9”, Grade 8
2 1 M301530 Hardened Flat Washer - 7/8” ID
3 1 1227-R-1604 Lock Nut - 7/8”-9, Grade C
A-3256-F-1228 Bushing Installation Tool (all MTA Series)
See TP-1135 at meritor.com/lod
REPAIR KITS AND COMPONENTS
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A-7805-F-1020 Shock AbsorberShock Absorber MTA23T, MTA25T & MTA30T
KIT 11356 Shock Absorber Hardware KIT (MTA23T, MTA25T & MTA30T) Item Qty. Part Number Description
1 4 1229-M-4979 Flat Washer - O.D. 2.25”; I.D. .938”
2 2 M301530 Hardened Flat Washer - 7/8” ID
3 2 1227-R-1604 Lock Nut - 7/8”-9, Grade C
4 1 S-21480-M-2 Capscrew 7/8” -9 x 10 Grade 8
5 1 S-21488-M-2 Capscrew 7/8” -9 x 11 Grade 8
Air Spring (MTA23T, MTA25T & MTA30T) Part Number Description
A-2258-H-1568 for MTA23T
A-2258-P-1576 for MTA25T
A-2258-Q-1577 for MTA30T
A-2258-S-1605 for MTA25L and MTA30L 6.5” THRU 8” RH
A-2258-R-1604 for MTA25L and MTA30L 9” RH
A-2258-T-1606 for MTA25L and MTA30L 12” THRU 19” RH
KIT 11203 Air Spring Bolt KIT (MTA23T, MTA25T & MTA30T)Item Qty. Part Number Description
1 2 R004961A Lock Nut - 3/4”-16, Grade 8
2 2 M301554 Lock Nut - 1/2”-13, Grade C
3 1 1250-H-1308 Plug - 1/4” NPT
KIT 11354 Valve KIT With Auto Dump (MTA23T, MTA25T & MTA30T)Item Qty. Part Number Description
1 1 A-7806-M-1053 Height Control Valve
2 1 203159-5 Linkage Assembly
3 2 NL-24-1 Lock Nut
4 2 WA-34 Washer
KIT 11355 Valve KIT Without Auto Dump (MTA23T, MTA25T & MTA30T) Item Qty. Part Number Description
1 1 A-7806-L-1052 Height Control Valve
2 1 203159-5 Linkage Assembly
3 2 NL-24-1 Lock Nut
4 2 WA-34 Washer
REPAIR KITS AND COMPONENTS
30 U.S. 888-725-9355 Canada 800-387-3889
Liftable Suspension ModelsMTA23T, MTA25T and MTA30T — Top Mount Applications
Ride Height MTA23T MTA25T MTA30T
(Inches) (Inches) (Inches) (Inches)
14 2.8 3.8 3.9
15 3.0 4.0 4.1
16 3.0 4.0 4.1
17 3.0 4.0 4.1
Lift KIT MPS 5066 MPS 5055 MPS 5056
MTA23T, MTA25T and MTA30T LIFT KITS
Parts List for Lift KITs MPS 5066, MPS 5055 and MPS 5056*
MPS 5066 MPS 5055 MPS 5056
MTA23T MTA25T MTA30T
Item Description Part Number Part Number Part Number Qty.
ASSY-AXLE LIFT (LH) A2-3305-S-3061 A-3305-S-3061 A1-3305-S-3061 1
ASSY-AXLE LIFT (RH) A2-3305-T-3062 A-3305-T-3062 A1-3305-T-3062 1
SAM
E FO
R E
ACH
KIT
1 Boss 1229-X-4964
2 PEDESTAL-AIR SPRING (LH) A-3305-G-3075 1
PEDESTAL-AIR SPRING (RH) A-3305-H-3076 1
3 NUT-LOCK,FIN. 1227-M-1573 2
4 BOLT-HEXAGON S-21488-M-2 2
5 WASHER-HARDENED M301530 2
6 SPRING-AIR A-2258-G-1489 2
8 NUT-LOCK,FIN. 1227-R-1604 2
9 PLATE SIDE 3305-L-3080 2
NUT-LOCK,FIN. 1227-B-1614 6
*Please note: Items contained in each kit are available for purchase individually.
2
1
3 4 5 6
8
9
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MTA Axle Wall Axle Track Trailing Arm Service Beam
Series Model Thickness Length Centers Part Number
MTA23T TQ 5/8” 71.5” 35” C36-3273-C107-SB
MTA23T TP 5/8” 71.5” 35” C23-3273-C185-SB
MTA23T TQ 5/8” 77.5” 41” X15-3273-J140-SB
MTA23T TP 5/8” 77.5” 41” X54-3273-Q199-SB
MTA23T TQ 5/8” 83.5” 47” C2-3273-P1420-SB
MTA23T TP 5/8” 83.5” 47” C6-3273-C1433-SB
MTA25T TQ 5/8” 71.5” 35” C37-3273-C107-SB
MTA25T TP 5/8” 71.5” 35” C20-3273-C185-SB
MTA25T TQ 5/8” 77.5” 41” X12-3273-J140-SB
MTA25T TP 5/8” 77.5” 41” X56-3273-Q199-SB
MTA25T TQ 5/8” 83.5” 47” C3-3273-P1420-SB
MTA25T TP 5/8” 83.5” 47” C7-3273-C1433-SB
MTA30T TQ 3/4” 71.5” 35” C5-3273-P1160-SB
MTA30T TP 3/4” 71.5” 35” C7-3273-Q1213-SB
MTA30T TQ 3/4” 77.5” 41” C7-3273-R1162-SB
MTA30T TP 3/4” 77.5” 41” C12-3273-K1155-SB
MTA30T TQ 3/4” 83.5” 47” C-3273-T1398-SB
MTA30T TP 3/4” 83.5” 47” C-3273-Y1559-SB
MTA SERVICE BEAMS
MTA Service Beams include axle and trailing arms with pivot bushings installed.
Beams are provided without shoes or cams.
Other specs include 16-1/2” brake spider, ABS sensor blocks, cam support bracket for long cams and brake angle rear.
32 U.S. 888-725-9355 Canada 800-387-3889
For Meritor Tire Infl ation Systm please visit meritor.com/LOD
and request or download catalog
PB-9999 Meritor Tire Infl ation System (MTIS) by P.S.I.™
U.S. 888-725-9355 MeritorPartsOnline.com 33Canada 800-387-3889
Each suspension model number will be distinct and unique. This number will consist of 14 characters and can be found on
the suspension identifi cation tag located on the rear of the roadside trailing arm.
The model nomenclature is defi ned as follows:
M TA 23 F 50 TN XXXXSequence Number
Axle TypeTN
Ride Height TP
40 = 14” TQ
Meritor 50 = 15”
60 = 16”
65 = 16.5”
70 = 17”
85 = 18”
Miscellaneous S = Sliding Subframe
F = Fixed Subframe
L = Less Subframe
Suspension System Rating* 14 = 14,000
20 = 20,000
23 = 23,000
38 = 38,000
40 = 40,000
46 = 46,000
Suspension Type PA = Parallelogram Air Suspension
TA = Trailing Arm Suspension
SM = Steel Mechanical
CM = Composite Mechanical
*Nominal capacity listed. Actual capacities may vary according to the application
MODEL NOMENCLATURE(prior to 10/1/2011)
34 U.S. 888-725-9355 Canada 800-387-3889
MODEL NOMENCLATURE(effective 10/1/2011)
Each suspension model number will be distinct and unique. This number will consist of 15 characters and can be found on
the suspension identifi cation tag located on the rear of the roadside trailing arm.
The model nomenclature is defi ned as follows:
M TA 23 T 140 TN 0015Sequence Number
Axle TypeTN
Ride Height TP
40 = 14” TQ
Meritor 50 = 15”
60 = 16”
65 = 16.5”
70 = 17”
85 = 18”
Miscellaneous S = Sliding Subframe
F = Fixed Subframe
L = Less Subframe
Suspension System Rating* 14 = 14,000
20 = 20,000
23 = 23,000
38 = 38,000
40 = 40,000
46 = 46,000
Suspension Type PA = Parallelogram Air Suspension
TA = Trailing Arm Suspension
SM = Steel Mechanical
CM = Composite Mechanical
*Nominal capacity listed. Actual capacities may vary according to the application
U.S. 888-725-9355 MeritorPartsOnline.com 35Canada 800-387-3889
10-X-1348..................................................... 25, 27
1227-B-1614 .................................................... 30
1227-M-1573 .......................... 5, 11, 17, 25, 27, 30
1227-R-1604 .............. 5, 11, 17, 24, 27, 28, 29, 30
1229-M-4979 ...................................... 5, 11, 17, 29
1229-X-4964....................................................... 30
1250-H-1308 ...................................................... 29
203159-5 ............................................ 5, 11, 17, 29
203159-9 ...................................................... 25, 27
21226275...................................... 5, 11, 17, 24, 26
21226276...................................... 5, 11, 17, 25, 27
21226663................................ 5, 11, 17, 25, 27, 28
3305-F-2606 ................................................. 11, 17
3305-H-2998 ................................................ 25, 27
3305-L-3080 ..................................................... 30
3305-W-2571 ........................................................ 5
A-1225-C-1537 ........................... 11, 17, 25, 27, 28
A-1225-N-1522 ............................................... 5, 28
A1-3152-A-1223 ................................................. 10
A1-3152-B-1224 ................................................. 10
A1-3152-C-1225 ................................................. 16
A1-3152-D-1226 ................................................. 16
A1-3152-E-1227 ................................................. 16
A1-3152-F-1228 ................................................. 16
A1-3152-G-1229 .................................................. 4
A1-3152-H-1230 .................................................. 4
A1-3152-J-1232 ................................................... 4
A1-3152-K-1233 .................................................. 4
A1-3152-P-1238 ................................................. 24
A1-3152-P-1238 ................................................. 24
A1-3152-Q-1239 ................................................. 24
A1-3152-S-1241 ................................................. 26
A1-3152-T-1242.................................................. 27
A1-3152-U-1243 ................................................. 24
A1-3152-W-1245 ................................................ 26
A1-3152-X-1246 ................................................. 27
A1-3152-Y-1221 ................................................. 10
A1-3152-Y-1247 ................................................. 24
A1-3152-Z-1222 ................................................. 10
A1-3152-Z-1248 ................................................. 25
A1-3305-F-2606 ........................................... 11, 17
A1-3305-S-3061 ............................................... 30
A1-3305-T-3062 ................................................ 30
A1-3305-W-2571 .................................................. 5
A-2258-G-1489 ................................................. 30
A-2258-H-1568 ............................................... 5, 29
A-2258-P-1576 ............................................. 11, 29
A-2258-Q-1577 ............................................. 17, 29
A-2258-R-1604 ....................................... 25, 27, 29
A-2258-S-1605 ................................................... 29
A-2258-S-1605 ................................................... 25
A-2258-T-1606........................................ 25, 27, 29
A2-3152-A-1223 ................................................. 11
A2-3152-B-1224 ................................................. 11
A2-3152-C-1225 ................................................. 17
A2-3152-D-1226 ................................................. 17
A2-3152-E-1227 ................................................. 17
A2-3152-F-1228 ................................................. 17
A2-3152-G-1229 .................................................. 5
A2-3152-H-1230 .................................................. 5
A2-3152-J-1232 ................................................... 5
A2-3152-K-1233 .................................................. 5
A2-3152-S-1241 ................................................. 26
A2-3152-T-1242.................................................. 27
A2-3152-U-1243 ................................................. 24
A2-3152-V-1244 ................................................. 25
A2-3152-V-1245 ................................................. 25
A2-3152-W-1245 ................................................ 26
A2-3152-X-1246 ................................................. 27
A2-3152-Y-1221 ................................................. 11
A2-3152-Y-1247 ................................................. 24
A2-3152-Z-1222 ................................................. 11
A2-3152-Z-1248 ................................................. 25
A2-3305-F-2606 ........................................... 11, 17
A2-3305-S-3061 ............................................... 30
A2-3305-T-3062 ................................................ 30
A2-3305-W-2571 .................................................. 5
A-3152-A-1223 ................................................... 11
A-3152-B-1224 ................................................... 11
A-3152-C-1225 ................................................... 17
A-3152-D-1226 ................................................... 17
A-3152-E-1227 ................................................... 17
A-3152-F-1228 ................................................... 17
A-3152-G-1229 .................................................... 5
A-3152-H-1230 .................................................... 5
A-3152-J-1232 ..................................................... 5
A-3152-K-1233 .................................................... 5
A-3152-L-1234 ................................................... 26
A-3152-M-1235 .................................................. 27
A-3152-P-1238 ................................................... 24
A-3152-Q-1239 ................................................... 24
A-3152-S-1241 ................................................... 26
A-3152-T-1242.................................................... 27
A-3152-U-1243 ................................................... 24
A-3152-V-1244 ................................................... 25
A-3152-W-1245 .................................................. 26
A-3152-X-1246 ................................................... 27
A-3152-Y-1221 ................................................... 11
A-3152-Y-1247 ................................................... 24
A-3152-Z-1222 ................................................... 11
A-3152-Z-1248 ................................................... 25
A-3256-F-1228 ................................................... 28
A-3305-F-2606 ............................................. 11, 17
A-3305-G-3075 ................................................. 30
A-3305-H-3076 ................................................. 30
A-3305-S-3061 ................................................. 30
A-3305-T-3062 .................................................. 30
A-3305-W-2571 ........................................ 5, 25, 27
A3-3152-A-1223 ................................................. 10
A3-3152-B-1224 ................................................. 10
A3-3152-C-1225 ................................................. 16
A3-3152-D-1226 ................................................. 16
A3-3152-E-1227 ................................................. 16
A3-3152-F-1228 ................................................. 16
A3-3152-G-1229 .................................................. 4
A3-3152-H-1230 .................................................. 4
A3-3152-J-1232 ................................................... 4
A3-3152-K-1233 .................................................. 4
A3-3152-Y-1221 ................................................. 10
A3-3152-Z-1222 ................................................. 10
A3-3305-W-2571 ................................................ 25
A3-3305-W-2571 ................................................ 27
A4-3152-A-1223 ................................................. 11
A4-3152-B-1224 ................................................. 11
A4-3152-C-1225 ................................................. 17
A4-3152-D-1226 ................................................. 17
A4-3152-E-1227 ................................................. 17
A4-3152-F-1228 ................................................. 17
A4-3152-G-1229 .................................................. 5
A4-3152-H-1230 .................................................. 5
A4-3152-J-1232 ................................................... 5
A4-3152-K-1233 .................................................. 5
A4-3152-Y-1221 ................................................. 11
A4-3152-Z-1222 ................................................. 11
A4-3305-W-2571 ................................................ 25
A4-3305-W-2571 ................................................ 27
A5-3152-A-1223 ................................................. 10
A5-3152-B-1224 ................................................. 10
A5-3152-C-1225 ................................................. 16
A5-3152-D-1226 ................................................. 16
A5-3152-E-1227 ................................................. 16
A5-3152-F-1228 ................................................. 16
A5-3152-G-1229 .................................................. 4
A5-3152-H-1230 .................................................. 4
A5-3152-J-1232 ................................................... 4
A5-3152-K-1233 .................................................. 4
A5-3152-Y-1221 ................................................. 10
A5-3152-Z-1222 ................................................. 10
A5-3305-W-2571 ................................................ 25
A5-3305-W-2571 ................................................ 27
A6-3305-W-2571 ................................................ 25
A6-3305-W-2571 ................................................ 27
A7-3305-W-2571 ................................................ 25
A7-3305-W-2571 ................................................ 27
A-7805-E-1019 ..................................................... 5
A-7805-F-1020 ................................................... 17
A-7805-F-1020 ................................................... 29
A-7805-F-1020 ................................................... 11
A-7805-S-1163 ................................................... 24
A-7805-S-1163 ................................................... 27
A-7806-L-1052 ................................................... 17
A-7806-L-1052 ..................................................... 5
A-7806-L-1052 ................................................... 11
A-7806-L-1052 ................................................... 29
A-7806-M-1053 .................................................. 17
A-7806-M-1053 .................................................... 5
A-7806-M-1053 .................................................. 11
A-7806-M-1053 .................................................. 29
A-7806-X-1064 ................................................... 25
A-7806-X-1064 ................................................... 27
A-7806-Y-1065 ................................................... 25
A-7806-Y-1065 ................................................... 27
C12-3273-K1155-SB..................................... 19, 31
C20-3273-C185-SB ...................................... 13, 31
C2-3273-P1420-SB......................................... 7, 31
C23-3273-C185-SB ........................................ 7, 31
C-3273-T1398-SB ......................................... 19, 31
C-3273-V1559-SB......................................... 19, 31
C3-3273-P1420-SB....................................... 13, 31
C36-3273-C107-SB ........................................ 7, 31
C37-3273-C107-SB ...................................... 13, 31
C5-3273-P1160-SB....................................... 19, 31
C6-3273-C1433-SB ........................................ 7, 31
C7-3273-C1433-SB ...................................... 13, 31
C7-3273-Q1213-SB ...................................... 19, 31
C7-3273-R1162-SB ...................................... 19, 31
KIT 11203 ............................................ 9, 15, 21, 29
KIT 11350 ........................................................ 8, 28
KIT 11351 ................................................ 14, 20, 28
NUMERICAL PARTS LISTING PART NUMBER PAGE PART NUMBER PAGE PART NUMBER PAGE
36 U.S. 888-725-9355 Canada 800-387-3889
NUMERICAL PARTS LISTING PART NUMBER PAGE PART NUMBER PAGE PART NUMBER PAGE
KIT 11352 ........................................................ 8, 28
KIT 11353 ................................................ 14, 20, 28
KIT 11354 ............................ 7, 9, 13, 15, 19, 21, 29
KIT 11355 ............................ 7, 9, 13, 15, 19, 21, 29
KIT 11356 ............................................ 9, 15, 21, 29
KIT 11367 .............................................................. 8
KIT 11368 .............................................................. 8
KIT 11369 .............................................................. 8
KIT 11374 .............................................................. 9
KIT 11375 .................................................. 9, 15, 21
KIT 11376 .......................................................... 7, 9
KIT 11377 .................................................. 9, 15, 21
KIT 11378 .............................................................. 9
KIT 11379 .............................................................. 9
KIT 11380 ...................................................... 14, 20
KIT 11381 ...................................................... 14, 20
KIT 11382 ...................................................... 14, 20
KIT 11387 ............................................................ 15
KIT 11389 ...................................................... 13, 15
KIT 11391 ............................................................ 15
KIT 11392 ............................................................ 15
KIT 11396 ............................................................ 20
KIT 11397 ............................................................ 20
KIT 11398 ............................................................ 20
KIT 11399 ............................................................ 20
KIT 11400 ............................................................ 21
KIT 11402 ...................................................... 19, 21
KIT 11404 ............................................................ 21
KIT 11405 ............................................................ 21
KIT 11406 .......................................................... 6, 8
KIT 11407 .......................................................... 6, 8
KIT 11408 .......................................................... 6, 8
KIT 11409 .......................................................... 6, 8
KIT 11411 ............................................................ 12
KIT 11412 ............................................................ 12
KIT 11413 ............................................................ 12
KIT 11414 ............................................................ 12
KIT 11415 ............................................................ 18
KIT 11416 ............................................................ 18
KIT 11417 ............................................................ 18
KIT 11418 ............................................................ 18
KIT 11483 ............................................................ 14
KIT 11484 ............................................................ 14
KIT 11485 ............................................................ 14
KIT 11486 ............................................................ 14
M301530 ..................... 5, 11, 17, 24, 27, 28, 29, 30
M301554 ............................................................. 29
MPS 5055 .......................................... 13, 15, 21, 30
MPS 5056 ...................................................... 19, 30
MPS 5066 .................................................... 7, 9, 30
MTA23T000TN1615 ............................................. 22
MTA23T000TN1616 ............................................. 22
MTA23T000TP1620 .............................................. 22
MTA23T000TP1629 .............................................. 22
MTA25T000TP1621 .............................................. 22
MTA25T000TP1622 .............................................. 22
MTA25T000TQ1617 ............................................. 22
MTA25T000TQ1618 ............................................. 22
MTA30T000TP1623 .............................................. 22
MTA30T000TP1624 .............................................. 22
MTA30T000TQ1619 ............................................. 22
MTA30T000TQ1628 ............................................. 22
NL-24-1............................................... 5, 11, 17, 29
NL-24-M-1 .................................................... 25, 27
R004961A ........................................................... 29
S-21440-Z-2 ................................................. 24, 27
S-21448-Z-2 ................................................. 25, 27
S-21464-M-2 .................................................. 5, 28
S-21472-M-2 .............................. 11, 17, 25, 27, 28
S-21480-M-2 ...................................... 5, 11, 17, 29
S-21488-M-2 ................................ 5, 11, 17, 29, 30
S-288Z-2....................................................... 25, 27
WA-34 ..................................... 5, 11, 17, 25, 27, 29
X12-3273-J140-SB........................................ 13, 31
X15-3273-J140-SB.......................................... 7, 31
X54-3273-Q199-SB......................................... 7, 31
X56-3273-Q199-SB....................................... 13, 31
MERITOR AFTERMARKET PARTS WARRANTY
We warrant all new parts for one year from date of shipment to the buyer against defective material or workmanship
(but not against damage caUsed by accident, abuse or improper installation, maintenance or repair) when such parts
are Used on vehicles the specifi cations of which have been approved by our Engineering Department.
As the exclusive remedy under this warranty, we will, at our option, repair or replace such parts free of charge, or take
back the nonconforming parts and refund the monies paid by buyer for such parts, if found on examination by us to be
nonconforming and if any necessary return charges are prepaid.
If it is necessary to return any parts under this warranty, buyer agrees not to make any deduction on account thereof
from remittances on current accounts while claims are in the process of disposition. Any expense incurred without our
consent for repairs or replacement will not be allowed.
THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES OR CONDITIONS, EXPRESS, IMPLIED OR STATUTORY,
INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR PARTICULAR PURPOSE. IN NO EVENT SHALL
SELLER BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY NATURE.
Only genuine Meritor replacement parts are covered by this aftermarket parts warranty.
888-725-9355 U.S.800-387-3889 CanadaMeritorPartsOnline.commeritor.com
©2015 Meritor, Inc.Litho in USA, PB-10108 Revised 01-15 (47865/11900)
Meritor Heavy Vehicle Systems, LLC7975 Dixie HighwayFlorence, Kentucky 41042 USA
Vehicle models, brands and names depicted herein are the property of their respective owners, and are not in any way associated with Meritor, Inc., or its affiliates.