pump_upgraded_lmx_bmx_33x_gearbox_40-20-25_field_engineering_bulletin_2.pdf

Bulletin No. 40.20.25

Upgraded LMX/BMX-33X Gearbox

EFFECTIVE DATE: JUNE 14, 2011 REV: E AFFECTED MODELS: LMX/BMX-33X PAGE 1 OF 4

www.sundyne.com Questions? Call 303-425-0800 or email [email protected] ISO 3004 Rev I

Field Engineering Bulletin

In response to the continuing customer-driven requirement to improve reliability of our products, Sundyne Corporation is pleased to introduce and release an upgraded gearbox design that replaces the former GB01AG05, GB01AG07, and GB01AG09 module configurations. This product improvement affects all field installations of Sundyne pump and compressor models LMV/BMP-331, LMC/BMC-331, LMV/BMP-333, LMC/BMC-333, LMC/BMC-337, and BMP-338. The upgraded LMV/BMP-331 gearbox is identified by the new module numbers GB01AG10 and GB01AG11. GB01AG10 module is for the option of 16 pitch gears on the output shaft. The upgraded LMV/BMP-333 and BMP-338 gearbox is identified by module number GB01AK09. Exchange gearboxes will conform to the new configuration as of September 1, 2003. Repair parts for the old configurations will still be available with an extended delivery schedule. The cross-sectional drawing, on page 4, identifies the areas of improvements which are summarized as follows:

1. Input shaft bearings (Items 125C and D) are changed to spherical roller bearings to increase the calculated L10 life by an order of magnitude. Spherical roller bearings can withstand up to 2 of misalignment.

2. Lower idler shaft ball bearing (Item 125A) changed to 1.75 inch ( 44.5 mm) hydrodynamic bearing design for higher shaft speeds and greater load capacity.

3. New internal oil pump (Item 160) delivers 12% more oil flow to accommodate the additional idler shaft journal bearing.

4. Fluoroelastomer O-rings are used to seal the gearbox split lines (Item 936AG).

5. Gear ratios, output shaft and bearings, and mounting configurations will not change therefore hydraulic/aerodynamic performance of a converted unit is not affected.

6. Oil pressure relief valve (Item 175) has been changed to a spring type design. Internal Viton O-ring controls re-seating pressure. Existing units mount the relief valve on the lower side of the bearing plate. The longer relief valve configuration requires an elbow for lower side installation. New units mount the relief valve on the upper side of the bearing plate; no elbow is needed.

Title: Upgraded LMX/BMX-33X Gearbox Rev: E Bulletin No. 40.20.25 Page 2 of 4


The following list compares old Sundyne part numbers to new Sundyne part numbers.

Item No Description Old Designation New Designation

A120 Input Shaft Assembly SH01AG12X SH01AG18XA*

-120 Input Shaft SH02AG03 SH02AG07

-122A Input Helical Gear GE04AG01XXX GE04AG03XXX

-125C Upper Input Shaft Bearing 21-060 21-118

-125D Lower Input Shaft Bearing 21-122 21-117

* If any input shaft component listed under old designation must be replaced, the entire input shaft assembly listed under new designation and noted by * is required.


160 Internal Oil Pump PU04AG02 or PU04AG03 PU04AK01**

** The new internal oil pump completely replaces either old style internal oil pump without any additional changes.


A140 Idler Shaft Assembly Note 1 SH01AG13X or SH01AD06X0 SH01AD06X1***

-140 Idler Shaft SH02AG02XX or SH01AD07XX0

SH01AD07XX1

-122C Lower Idler Spur Gear GE03AA01XXX GE03AG03XXX

-125A Lower Idler Shaft Bearing 21-027 BE09AG17A***

151D Lower Idler Shaft Bearing BE09AA11 BE09AG17A***

155D Lower Idler Thrust Washer None (for 21-027 only) or WA05AA01320 or WA05AW02

WA05AA13C***

101A Lower Gearbox Housing HO05AA03 HO05AD13X1***

*** If any idler shaft component or the lower gearbox housing listed under old designation is to be replaced, all the components listed under new designation and noted by *** must be replaced.

Note 1: The first time a customer converts to the SH01AD06 shaft assembly, a conversion kit will need to be purchased. Conversion kit KT01AD62X1 contains (1) BE09AG17A, (1) WA05AW02, (2) 14-223UC, (1) GK01AA01, (1) HO05AD13X1, and (1) instruction manual.


105 Split Line Gaskets GK01AA01**** 14-223UC (Item 936AG)

102 Bearing Plate PL01AG02X PL01AG02XXXX1

101 Lower Gearbox Housing HO05AA03 HO05AD13X1

**** To convert from split line gaskets to split line O-rings the bearing plate and lower gearbox housing listed under new designation must also be changed.


175 Pressure Relief Valve 24-163 or 71-292 71-816***** ***** Existing field units can benefit from the new relief valve design by using a 71-816 valve with a 3/8

street elbow located on the high speed shaft bearing side (lower side) of the bearing plate. Sundyne Corporation offers this conversion as kit #VA01AG01.



Two maintenance and operating practices will also change with the upgraded gearbox. First, the preferred gearbox lubricant will change to ISO viscosity grade 46. Second, greater care must be taken when installing the upper gearbox housing because of the spherical roller bearings. Before installing the upper gearbox housing, lubricate the upper housing bearing bores and bearing outside diameters with gearbox oil. Use a machinist level to position the outer race of the upper input shaft bearing and ensure that the idler shaft is in its proper location before installing the upper gearbox housing. Use the level on top of the upper gearbox housing while lowering it into position. If difficulty persists, slightly expand the upper bearing bores by heating the upper gearbox housing in an oven to 200 F (93 C), then proceed with installation using proper safety procedures. The pressure relief valve was changed from a stem type design to a spring type design for increased reliability. Due to the increased length of the new relief valve, the valve location on new unit/gearbox purchases has been moved from the lower side of the bearing plate to the upper side of the bearing plate. For the existing field population, the new valve is to be installed with a street elbow into the lower side of the bearing plate, see photos below. By utilizing an elbow an extra half inch of space is gained allowing the idler shaft to be moved to the side for the installation of the low speed shaft. Relief valve assembly number VA01AG01 includes an elbow to simplify gearbox assembly. This assembly can be purchased from Sundyne Corporation. OLD DESIGN BEARING PLATE OLD DESIGN BEARING PLATE (LOWER VIEW) (UPPER VIEW)

The relief valve internal o-ring was changed from Teflon to Viton material to control the needle and seat so that the designed re-seating pressure can be obtained. Upgraded LMX/BMX-33X gearboxes have been operating successfully in the field since 2003. Sundynes Exchange Gearbox Program offers the greatest value for your equipment investment. OEM quality components are used throughout the exchange gearbox, field assembly is eliminated, and credit is given when the old gearbox is returned. Exchange gearboxes are warranted for 12 months from start up or 18 months from date of shipment. Sundyne Corporation is confident these gearbox improvements will lead to increased reliability and unit life for all installations. For more information about these upgrades, contact the Field Service Groups at our manufacturing facilities located in Arvada, Colorado, U.S.A. and Dijon, France.

Approvals Kerry Kramlich Engineering Manager 09/22/2011 Malcolm White SISA Engineering Manager 09/22/2011 Chad Lindgren Field Service Manager 09/26/2011 Chris Fouts Aftermarket Manager 09/27/2011

Pressure relief valve orientation, pointing away from the idler shaft

Idler shaft

Pressure relief valve and a 90 street elbow

(kit # VA01AG01)


www.sundyne.com Questions? Call 303-425-0800 or email [email protected] ISO 3004 Rev

New Configuration

A120 120

125C

122A

125D

160

101

A140 140

122C

125A

155D

936AG

175

0

0.4

0.8

1.2

1.6

2

2.4

Oil

Flow

, m3 /

hr

0

2

4

6

8

10O

il Fl

ow, U

. S. G

PM60 Hz50 Hz

Old

Con

figur

atio

n

New

Con

figur

atio

n

Old

Con

figur

atio

n

New

Con

figur

atio

n

Internal Oil Pump Flow Rate(150 oF, 65 oC)

200 220 240 260 280 300

0

50000

100000

150000

200000

250000

L 10 B

earin

g Li

fe, H

ours

200 220 240 260 280 300Load, kW

0

50000

100000

150000

200000

250000

250 300 350 400Load, Horsepower

Minimum Theoretical L10 Bearing Life(Output Speed 10,000 rpm)

50 Hz

60 Hz

I

Item NoDescriptionOld DesignationItem NoDescriptionOld DesignationNew DesignationItem NoDescriptionOld DesignationNew DesignationItem NoDescriptionOld DesignationNew DesignationItem NoDescriptionOld DesignationNew Designation

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pump_upgraded_lmx_bmx_33x_gearbox_40-20-25_field_engineering_bulletin_2.pdf