Beretta V6-173 2.8L (1989)
Clutch: Customer Interest
A/T - Slip in Reverse/No Reverse After Installation
Number:
90-85-7A
Section:
7A
Date:
November 1989
Corporate Bulletin No.: 977149
Subject:
SLIPS IN REVERSE AND/OR NO REVERSE
Model and Year:
1989-90 A, J, L CARS AND 1990 W CARS AND U-VAN WITH 3T40 AUTOMATIC TRANSMISSION
Figure 1
TO:
ALL CHEVROLET DEALERS
This bulletin covers incorrectly installed Lo-Reverse Piston Snap Rings (657) that may cause a Slip in Reverse and/or no Reverse condition.
Whenever installing the Lo-Reverse Clutch piston snap ring (657), the step on the outside diameter of the snap ring must be positioned toward the
Lo-Reverse Clutch retainer (656). The retainer must rest inside the snap ring to allow proper piston travel. See Figure 1.
If the snap ring is installed backwards with the step facing the splines on the hub, the retainer may limit travel of the piston and may result in a durability
concern.
