Century V6-231 3.8L (1985)
Clutch: Customer Interest
A/T - THM 440-T4 Long/Delayed 2-3 Shift
Bulletin:
87-7440-5A
Date:
Oct., 87
Ref. No. 87-072A-7440
Corp Ref. No. 777131R
SUBJECT:
THM 440-T4 NEW 3RD CLUTCH INNER SEAL REPLACEMENT FOR A LONG AND/OR DELAYED 2-3 SHIFT CONDITION
MODELS AFFECTED: 1984-87 THM 440-T4 TRANSAXLES
FIGURE 1
NOTICE:
This bulletin contains updated Julian date breakpoints and supersedes Dealer Bulletin 87-7440-5 which should be discarded.
A long and/or delayed 2-3 shift on a THM 440-T4 transaxle may be caused by a leaking 3rd clutch inner seal (Figure 1, Item 635A). A new thicker seal
is used in production and available for service replacement. The new seal can be recognized by a small group of hash marks on the inside diameter of the
seal.
DATE OF PRODUCTION CHANGE
Between September 1, 1986 (Julian Date 244) and February 12, 1987 (Julian Date 043), a new 3rd clutch inner seal was phased into production. This
change is also on all Service Replacement Transmission Assembly (SRTA) models, effective November 15, 1986 (Julian Date 319).
SERVICE ACTION IF THIS CONDITION IS ENCOUNTERED
