NEW DESIGN LO / REVERSE PIPE, SEAL AND COMPONENTS

MODELS AFFECTED: 1987 CENTURYS AND SKYHAWKS

A new design lo-reverse pipe seal was temporarily implemented on all Windsor built 125C transaxles. This build started on January 12, 1987 (Julian date 017) and ended on April 6, 1987 (Julian date 096) (Figure 1). The lo-reverse pipe seal and associated components are referred to in the parts list as second design. Production after April 6, 1987, reverted to the first design. The second design lo-reverse seal change includes the following new design components.

- Case with machined boss. - Retainer (bracket) to hold seal into case and bolt. - Seal assembly (existing "O" ring and steel backing plate are utilized). - Reverse oil pipe.

To service the new design pipe seal and related components, order the following (Figure 2):

PART NUMBER DESCRIPTION

8664493 Pipe, Reverse Oil (Second Design) 8664492 Seal, Reverse Oil (Second Design) 8664494 Retainer, Reverse Oil Pipe (Second Design) 8664495 Bolt M8X1.25X14 (Second Design)

To service a new design case (with machined boss) for any reason, order a first design case (Part Number 8653918) and first design lo-reverse pipe seal and components (refer to parts catalog for first design part numbers).

Refer to appropriate section of service manual for replacement procedures.

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.