Full Size Buick FWD V6-181 3.0L (1984)
Input Shaft: Technical Service Bulletins
A/T - New Parts and Service Information
Bulletin 86-7440-4
Date
Nov. '86
Ref. No. 86-187-7440
SUBJECT:
NEW PARTS AND SERVICE INFORMATION:
I.
INPUT SHAFT SEAL ELIMINATED II. CONVERTER CLUTCH REGULATOR VALVE SPRING ELIMINATED
MODELS AFFECTED: 1984-1986 CENTURYS, LESABRES, ELECTRAS AND RIVIERAS WITH THM 440-T4 TRANSAXLES
I.
INPUT SHAFT SEAL ELIMINATED
Service Action:
FIGURE 1 - TRANSAXLE IDENTIFICATION
All 1986 model THM 440-T4 transaxles were built without an input shaft to 4th clutch shaft seal. When servicing a THM 440-T4 built prior to 1986, it
is not necessary to replace the input shaft to 4th clutch shaft seal. Refer to Figure 1 for transaxle identification information.