A/T - Improved Bottom Pan and Gasket
88cad06Bulletin No. T-88-146
File in Group 7
Number 189
Corp. Ref. No. 877117
Date June '88
SUBJECT: IMPROVED TRANSAXLE BOTTOM PAN AND GASKET REPLACEMENT PARTS TO REDUCE FLUID LEAKS
MODELS AFFECTED: 1985-1988 DE VILLES AND FLEETWOODS 1986-1988 ELDORADOS AND SEVILLES
FIGURE 1 - BOTTOM PAN RIB COMPARISON:
A new transaxle bottom pan and gasket designed to reduce the chance of crushing or splitting the gasket during installation is now available for service. The revised design uses a continuous raised rib on the pan, refer to Figure 1, and a latex-coated cellulose gasket.
^ When replacing the bottom pan on all 1985-1988 THM 440-T4 transaxles, use the service package listed below.
P/N Contents
8662942 Transaxle Bottom Pan Package
(1) Transaxle bottom pan gasket (stiff, black latex-coated cellulose)
(1) Transaxle bottom pan (raised rib)
(1) Chip collector magnet
NOTE: If the previous pan is used with the new gasket or the new pan is used with a cork gasket, fluid leaks may develop.
^ When replacing the bottom pan gasket on all 1985-1988 THM 440-T4 transaxles built after January 4, 1988 (Julian Date 005), use P/N 8668028.
^ Overhaul Seals & Gaskets Package, P/N 8646975, and Overhaul Repair Complete Package, P/N 8646976, include the new latex-coated cellulose gasket and the previous design latex-coated cork gasket.
Refer to the THM 440-T4 Automatic Transaxle Unit Repair Table Of Contents for bottom pan and gasket service information.