FORWARD CLUTCH HOUSING 250 TRANSMISSION-REVISION

TO: ALL CHEVROLET DEALERS

A revision was made to the forward clutch housing in the 250C transmission on October 15, 1981. This revision further required a new roller bearing between the forward and direct clutch housings.

The revised housing increased the wall thickness in the bearing seat area by eliminating the .080 recess.

The service package for the new forward clutch housing, P/N 8641939, includes the following:

1 - 8641938 - Forward Clutch Housing 1 - 9436851 - Roller Bearing Assembly 1 - 8641937 - Instruction Sheet

The service package for the new direct clutch drum roller bearing assembly, P/N 8641936, is available separately and includes the following:

1 - 9436851 - Roller Bearing Assembly 1 - 8641937 - Instruction Sheet

NOTE: The instruction sheet specifies that the bearing must be installed with the black oxide race toward the forward clutch housing.

SERVICE INFORMATION

(1) The new revised forward clutch housing must be used with the new roller bearing assembly.

(2) The past design roller bearing assembly, 19428864, cannot be used with the new forward clutch housing or interference will result.

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.