REAR AXLE PISTON ASSY. REPLACE SERVICE REPLACEMENT INFO.

Subject: REAR AXLE RING AND PINION ASSEMBLY REPLACEMENT

Model and Year: 1991 M/L VANS

Rear axle ring gear and pinion sets for 1991 M/L vans are system balanced as an assembly. The assembly is balanced as a unit with the pinion flange weighted as a harmonic member.

When axle repairs dictate that a new ring and pinion gear set be installed, a new pinion flange must also be used. Discard the original pinion flange and install service flange # 26006975 now available through GMSPO.

SERVICE PARTS INFORMATION

Part Number Description Quantity ----------- ----------- -------- 26006975 FLANGE 1

Parts are currently available from GMSPO.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.