Skylark L4-138 2.3L DOHC VIN D MFI QUAD 4 (1989)
Clutch: All Technical Service Bulletins
A/T - 3T40 New Roller Clutch
Bulletin 91-73T40-4
Date Feb. '91
Ref. No. 91-104-73T40
Corp. Ref. No 177103
SUBJECT: NEW A/T ROLLER CLUTCH (1980-1991 HYDRA-MATIC 3T40)
MODELS AFFECTED: 1980-85 SKYLARK 1982-89 SKYHAWK 1982-91 CENTURY 1985-91 SOMERSET/SKYLARK
Figure 1
Figure 2
BULLETIN COVERS:
A new Roller Clutch for all Hydra-Matic 3T40 transaxles, for increased Lo Roller clutch durability. This new roller clutch has a new spring and roller
holding cage which is plastic and black in color. The springs located inside the roller clutch have been rotated to a position of 90 degrees. (Figures 1 and
2)
DATE OF PRODUCTION CHANGE:
This new roller, clutch went into production October 23, 1990 (Julian Date 296) for all Willow Run built models. Windsor built models will be equipped
with this new roller clutch at a future production date.
SERVICE PARTS INFORMATION:
This new roller clutch may be used in all prior model year Hydra-Matic 3T40 transaxles. Whenever ordering this new roller clutch, refer to the following
part number:
