A/T - New 2nd Clutch Piston Seal
88olds02SUBJECT NEW 2ND CLUTCH PISTON SEAL NUMBER: 88-T-24
CORP. REF. NO.: 877109
DATE: January 1988
MODELS/YEARS 1984-1988 THM 440-T4 (ME9)
SECTION: 7A
VEHICLE APPLICATIONS:
1984-88 Cutlass Ciera, Delta 88, Ninety-Eight, Toronado 1988 Cutlass Supreme
FIGURE 2 - REVERSE BAND AND 2ND CLUTCH ASSEMBLY:
BULLETIN COVERS:
Service part information on a new second clutch piston inner seal (614B) for all 1984 through 1988 vehicles equipped with a THM 440-T4 transaxle. This new seal uses a different material (Viton TM) than the previous seal and can be identified by its part number (8668074) molded into the lip of the seal (Figure 2).
FIGURE 1 - THM 440-T4 TRANSAXLE IDENTIFICATION INFORMATION:
DATE OF PRODUCTION CHANGE: (Figure 1)
October 30, 1987 (Julian Date 303), all 1988 THM 440-T4 transaxles were built using the new 2nd clutch piston inner seal (614B).
SERVICE ACTION:
When replacing the second clutch piston inner seal:
^ 1984 through 1986 - Either the new second clutch piston inner seal or previous seal may be used.
^ 1987 or 1988 - Only use the new second clutch piston inner seal (614B) contained in the service package listed in the Service Parts Information section.
SERVICE PARTS INFORMATION:
Service
Package No. Contents
*8662935 (1) 2nd Clutch Piston Inner Seal (614B)
(1) 2nd Clutch Piston Outer Seal (614A)
*NOTE: This seal package must be ordered when using the following overhaul packages.
- 8646975 Overhaul Seals and Gaskets Package
- 8646976 Overhaul Repair Complete Package
FIGURE 2 - REVERSE BAND AND 2ND CLUTCH ASSEMBLY:
Discard the 2nd clutch piston inner seal (614B) contained in these overhaul packages if it is not identified as shown in Figure 2.
SERVICE MANUAL REFERENCE:
Refer to the THM 440-T4 (ME9) Automatic Transaxle Unit Repair Table of Contents for 2nd clutch assembly service information.
SERVICE NOTES:
For warranty purposes, when replacing the second clutch seals use labor operation K7535. For this operation and to recondition the transaxle completely, refer to the appropriate labor time guide for applicable labor time information.