1. Disassemblya. Remove OE spring adjuster retaining clip and save for reuse.

b. Take and record reference dimension at each spring adjuster location. Measure from the end of the spring adjuster to the casting (Figure 1). This measurement will be required when assembling the new spring adjuster.

b. Remove and discard OE spring adjuster.

c. Remove the OE spring and save for reuse.

Aisin AW TF-60SN, TF-80SC, TF-81SCSpring Adjuster KitPart No. 15741-48K•Spring Adjusters (4)•O-Rings (6) 2 extra

Note: This kit fits the following applications:TF-60SN: BMW 6F21WA, VW/Audi 09G,

09K, 09M unitsTF80SC: Volvo (AM6), Opel (AF40),

Peugeot (TF80), Saab (AF40/6) & Land Rover (TF80)

TF81SC: Ford (AF21), Mazda (AW6A-EL)

Also Available

Oversized C1 Clutch Control Valve Kit15741-25K TF-60SN, TF-80SC & TF-81SC

Oversized K2 Clutch Control Valve Kit15741-05K TF-60SN

Oversized K3 Clutch Control Valve Kit15741-08K TF-60SN

Oversized B1 Brake Control Valve Kit15741-22K TF-60SN

Oversized C2 Clutch Control Valve Kit39741-05K TF-80SC & TF-81SC

Oversized C3 Clutch Control Valve Kit39741-08K TF-80SC & TF-81SC

Oversized B1 Band Control Valve Kit39741-22K TF-80SC & TF-81SC

Figure 1

Save OE spring adjuster retaining clip for reuse.

Must measure and record at each spring adjuster loca-tion before reassembly.

O-Ringed Spring Adjuster

TF-60SN Lower Valve

Body

TF-80SC Front Casting

TF-81SC Front Cover

©2012 Sonnax Industries, Inc. 15741-48K-IN 11-19-12

800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com Page 1

TrANSmiSSioN PartsI n s t r u c t i o n s

2. Installation & Assemblya. Install the Sonnax O-ring into the shallow groove on the Sonnax

spring adjuster (Figure 2).

b. Slide the OE spring over the small boss on the Sonnax spring adjuster. Make sure the I.D. of the spring is seated over the small boss (Figure

2) and not hung-up on it (Figure 3).

c. Install the Sonnax spring adjuster and OE spring assembly and adjust to the reference dimension recorded in disassembly procedure, then install the OE retaining clip.

Notes:

• Each adjuster location may have a different referenced dimension, be sure to use the correct dimension for each location.

• Due to spring wrap up on installation, the valve will have to stroke a few times to restore OE spring position and rate. This can be done manually or will occur after a short test drive.

• Adaption: The vehicle will have to obtain operating temperature of more than 185˚F/85˚C to initiate re-adaption after any adjustments.

3. Final TestingVacuum testing over the adjuster spring holds a minimum of 12 in-Hg. Use Sonnax test plate to cover and seal each of the four outlined areas in each valve body to preform a vacuum test.

Figure 2Install O-ring into shallow

groove on Sonnax spring adjuster.

Slide OE spring over small boss on the

Sonnax spring adjuster.

Figure 3

Make sure OE spring does not get hung-up

on the small boss.

TF-60SN Valve Body Figure 4 TF-80SC Valve Body Figure 5 TF-81SC Valve Body Figure 6

20

25

15

0

10

5

30VACUUMTEST

20

25

15

0

10

5

30VACUUMTEST

20

25

15

0

10

5

30VACUUMTEST

©2012 Sonnax Industries, Inc. 15741-48K-IN 11-19-12

800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com Page 2

TrANSmiSSioN PartsI n s t r u c t i o n sSpriNg AdjuSTer KiT 15741-48K