Grand Prix V6-191 3.1L (1989)
Governor: All Technical Service Bulletins
A/T - 440T4/F7 New Governor Screen Added To Case
SIL: 18-89 (May)
1989 THM 440-T4/Hydra-matic 4T60
1989 THM F-7
SUBJECT: New Governor Screen Added to Case
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.
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.
DATE OF PRODUCTION CHANGE:
The new Governor Screen will be used on some models for production starting November 30, 1988 (Julian Date 335) and will be used on all models
December 5, 1988 (Julian Date 340).
SERVICE NOTES;
