Riviera V6-231 3.8L VIN C SFI (1989)
Governor: All Technical Service Bulletins
A/T - New Governor Screen Added to Case
Bulletin 89-7440-4 Date
Feb.,
'89
Ref. No. 89-064-7440 Corp. Ref. No. 877151
SUBJECT:
NEW GOVERNOR SCREEN ADDED TO CASE.
MODELS AFFECTED:
SOME 1989 VEHICLES EQUIPPED WITH THM 440-T4/HYDRA-MATIC 4T60 TRANSAXLES
BULLETIN COVERS
A new Governor Screen (3) was added to the Governor Shaft Sleeve in the Case. The Governor Screen will minimize the potential of sediment entering
the Governor Assembly and preventing the Governor Balls from seating properly.
FIGURE 1 - THM 440-T4/THM F-7 TRANSAXLE IDENTIFICATION INFORMATION
SERVICE ACTION (Figure 2)
A machining change in the Case to provide clearance for the Screen will not permit installation of the Screen in past model Cases.
Important:
Do not attempt to drill previous design Cases in order to install a Governor Screen due to critical dimensions.
