Moan and/or Groan Noise from Rear Axle Differential on Turns (Replace Rear Differential Limited Slip Case)
| Subject: | Moan and/or Groan Noise From Rear Axle Differential On Turns (Replace Rear Differential Limited Slip Case) |
| Models: | 2005 Saab 9-7X |
| with Limited Slip Rear Differential (RPO G86) |
| Attention: | This Bulletin ONLY applies to 2005 Saab 9-7X vehicles with RPO G86. |
Condition
Some customers may comment on a moan and/or groan noise from the rear end of the vehicle while making turns.
Cause
This condition may be caused by a slip/stick condition between the limited slip differential clutch plates within the rear axle case assembly.
Correction
A new zero preload limited slip differential case assembly has been released for 2005 model year only with changes in the clutch plates to eliminate this condition. Because changes in the clutch stack thickness have caused changes in the differential side gears and case, this differential case unit must be changed as an assembly.
Notice:
• DO NOT REUSE the ring gear retaining bolts. Always replace the ring gear retaining bolts when removing the ring gear from the case. Failure to replace the ring gear retaining bolts may result in an improper torque specification. • Always inspect the Gear Tooth Contact Pattern Inspection. Failure to inspect the contact pattern may result in a premature rear axle failure and / or a noise condition.
Important:
• The differential side bearing preload adjustment must be completed before the backlash adjustment can be started. • In order to maintain the original backlash, adjust the differential case side bearing preload by changing the thickness of the left and the right side shim packs equally. • Measure the service shims and the spacers one at a time. Add the measurements together in order to obtain the total thickness of the left or the right side shim pack. • Do not use or reuse the original cast iron production shims. Use service shims and spacers listed in the parts table below. • Before installation of the differential assembly, ensure that the side bearing surfaces in the axle housing are clean and free of burrs. If the original bearings are to be reused, the original bearing cups must also be used.
Replace the differential case carrier with P/N 19121991. Refer to Differential Replacement (SI Document ID# 760916).
Parts Information
Part Number | Description |
|---|---|
19121991 | Case, Rear axle assembly with G86 limited slip |
89021677 (Canadian P/N 89021678) | Axle Lube SAE 75W-90 Synthetic Axle Lubricant |
1052358 (Canadian P/N 992694) | Limited-Slip Axle Lubricant Additive |
12479162 | SPACER, DIFF DRV P/GR BRG |
12479020 | GASKET, R/AXL HSG CVR |
12479028 | BOLT, DIFF R/GR (7/16-20 UNRF-2A) (W/ADHESIVE)(10 per package) |
1052351 (Canadian P/N 10953497) | Gear Marking Compound |
12471362 | SHIM KIT, DIFF BRG (1.016-1.118MM RANGE) (REAR AXLE) |
12471363 | SHIM KIT, DIFF BRG (1.168-1.372MM RANGE) (REAR AXLE) |
12471364 | SHIM KIT, DIFF BRG (1.422-1.626MM RANGE) (REAR AXLE) |
12471365 | SHIM KIT, DIFF BRG (1.676-1.880MM RANGE) (REAR AXLE) |
12471366 | SHIM KIT, DIFF BRG (1.930-2.134MM RANGE) (REAR AXLE) |
12471367 | SHIM KIT, DIFF BRG (2.184-2.388MM RANGE) (REAR AXLE) |
12471368 | SHIM KIT, DIFF BRG (2.438-2.540MM RANGE) (REAR AXLE) |
12479113 | SHIM KIT, DIFF DRV P/GR BRG (.020-.024MM) (REAR AXLE) |
12479114 | SHIM KIT, DIFF DRV P/GR BRG (.025-.029MM) (REAR AXLE) |
12479115 | SHIM KIT, DIFF DRV P/GR BRG (.030-.034MM) (REAR AXLE) |
12479116 | SHIM KIT, DIFF DRV P/GR BRG (.035-.039MM) (REAR AXLE) |
12479117 | SHIM KIT, DIFF DRV P/GR BRG (.040-.043MM) (REAR AXLE) |
12479118 | SHIM KIT, DIFF DRV P/GR BRG (.044-.047MM) (REAR AXLE) |
12479119 | SHIM KIT, DIFF DRV P/GR BRG (.048-.050MM) (REAR AXLE) |
Warranty Information (Canada Only)
Labor Operation | Description | Labor Time |
|---|---|---|
F2223 | Case, Differential - Rear Differential (Limited Slip) - Replace | Use published labor operation time |
Warranty Information (U.S. Models)
For vehicles repaired under warranty, use:
Labor Operation | Description | Failed Object | Fault/Reason Code | Location Code | Warranty Type | Repair/Action Code | Labor Time |
|---|---|---|---|---|---|---|---|
4731102 | R&R Limited Slip Differential | 47311 | 71 | 0 | 01 | 01 | Use published labor operation time - review STM for associated labor operations |
