Lumina L4-151 2.5L (1991)
Clutch: All Technical Service Bulletins
A/T - THM 3T40 New Roller Clutch
Number: 91-184-7A
Section: 7A
Date: February 1991
Corporate Bulletin No.: 177103
Subject:
NEW ROLLER CLUTCH
Model and Year:
1982-91 CELEBRITY, CAVALIER, CORSICA, BERETTA, CHEVETTE, LUMINA AND CITATION WITH 3T60
AUTOMATIC TRANSMISSION
Figure 1
Figure 2
BULLETIN COVERS:
A new NDH Roller Clutch (662) 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 NDH roller clutch, refer to