LeSabre V8-307 5.0L VIN Y 4-bbl (1984)
Clutch: All Technical Service Bulletins
A/T - New Forward Clutch Assembly
Bulletin 87-7200-4
Date June '87
Ref. No. 87-131-7200
Corp. Ref. No. 777128
SUBJECT:
NEW DESIGN FORWARD CLUTCH FOR SMOOTHER PARK/NEUTRAL TO DRIVE ENGAGEMENT
MODELS AFFECTED: All 1984-87 THM 200C (MV9) EQUIPPED VEHICLES (EXCEPT FOR 1984-85 CZ, AND JY MODELS)
BULLETIN COVERS
1987 THM 200C transmissions are being built with a new design "feed/bleed" system for the forward clutch. This system gives more cushioning during
forward clutch apply, and can be used on certain past models to reduce a harsh PARK/NEUTRAL to DRIVE engagement feel.
FIGURE 1 - THM 200C TRANSMISSION NAMEPLATE
FIGURE 2
DATE OF PRODUCTION CHANGE: (Figures 1 and 2)
August 4, 1986 (Julian date 216), these changes were introduced for all THM 200C models:
Forward Clutch Assembly, minus Check Ball in housing (619) Forward Clutch Piston Assembly (623) Additional waved plate (627) Front Internal Gear
(636)
SERVICE ACTION
1984-87 models built before August 4, 1986 (Julian Date 216):
If a vehicle equipped with a THM 200C transmission listed in SERVICE PARTS INFORMATION has a harsh PARK/NEUTRAL to DRIVE
engagement, install the Neutral Drive Shift Package.
