Somerset V6-181 3.0L (1986)
DATE OF PRODUCTION CHANGE
The new Direct Clutch drum went into production July 11, 1989, (Julian Date 192) for all Willow Run built transaxles and July 12, 1989, (Julian Date
193) for all Windsor built HYDRA-MATIC 3T40 transaxles.
SERVICE PROCEDURE
This new Direct Clutch Drum can be used on previous model HYDRA-MATIC 3T40 transaxles built since (model year) Start of Production - 1985.
Do not attempt to use the new Direct Drum in transaxles built previous to model year 1985 because the return spring and snap ring groove location will
not allow 1980 thru 1984 model internal components to assemble into the new direct clutch drum.
If an intermediate band failure occurs, inspect the outer wall of the direct clutch drum using a flat edge ruler. If there are dips in the drum between the
ruler, the drum should be replaced.
SERVICE PARTS INFORMATION
Whenever ordering a New Direct Clutch Housing, refer to the following part numbers:
Part Number
Description
8653971
Direct Clutch Drum and Check Ball Capsule
8653982
Direct Clutch Drum, Check Ball Capsule and
Intermediate Band
Refer to GMSPO group number 4.251 for proper usage. Parts are currently available from GMSPO.
SERVICE MANUAL REFERENCE
Whenever servicing any THM 125C/HYDRA-MATIC 3T40 transaxle, refer to the procedures outlined in the Unit Repair Section of your Service
Manual.
