Cutlass Supreme V8-307 5.0L VIN Y 4-bbl (1985)
Band Apply Servo: All Technical Service Bulletins
A/T - Servo Cover Retaining Ring Modifications
SUBJECT
THM 200C, 200-4R & 325-4L TRANSMISSION
NUMBER: 85-T-23
SERVO COVER RETAINING RING INFORMATION
DATE:
April 12, 1985
1985 CUTLASS, 88 & TORONADO
MODELS/YEARS
SECTION:
7A
FIGURE 1 - SERVO COVER RETAINING RING
FIGURE 2 - INTERMEDIATE SERVO BORE
During the 1985 model year, a new style servo cover retaining ring (with tangs) is scheduled to go into production on THM 200C, 200-4R and 325-4L
transmissions. See Figure 1. In addition to the new style retaining ring, the notches on the case intermediate servo bore (used for retaining ring removal)
were omitted. See Figure 2.
These changes will provide easier removal and installation of the servo cover retaining ring, as well as prevent damage to the servo cover and piston
seals during assembly..
The past style servo cover retaining ring part number 8628137 (without tangs), can only be used with the past style (with notches) case intermediate
servo bore. The new servo cover retaining ring part number 8657213 (with tangs), can be used with either style case intermediate servo bore.
