Skylark L4-138 2.3L DOHC VIN D MFI QUAD 4 (1989)
Information on Smooth and Grooved surface Fiber Plates that are used in the Direct Clutch and Forward Clutch assemblies of all 1989 models.
DATE OF PRODUCTION CHANGE:
July 11, 1988 (Julian Date 193), the grooved fiber plates went into production for all THM 125/125C built in Willow Run and July 14, 1988 (Julian Date
196), for all Windsor built THM 125/125C transaxles.These plates were used in the Direct and Forward Clutch Assemblies.
Direct Clutch Assemblies with the smooth surface fiber plates went into production as an option to grooved Fiber Plates February 27, 1989 (Julian Date
058) for THM 125/125C/HYDRA-MATIC 3T40 transaxles.
Some THM 125C/HYDRA-MATIC 3T40 transaxles built after February 27, 1989 (Julian Date 058) may contain grooved fiber plates in the Forward
Clutch Assembly.
SERVICE ACTION:
Whenever service to any model THM 125/125C Hydra-Matic 3T40 built prior to July 11, 1988 (Julian Date 193) at Willow Run or July 14, 1988 (Julian
Date 196) at Windsor is necessary, only smooth fiber plates should be used in the Direct and Forward Clutch Assemblies.
Whenever service to any 1989 THM 125/125C Hydra-Matic 3T40 built prior to February 27, 1989 (Julian Date 058) is necessary, either grooved or
smooth surface fiber plates may be used on both the Direct and Forward Clutch assemblies.
Whenever service to any 1989 THM 125C/HYDRA-MATIC 3T40 built after February 27, 1989 (Julian Date 058) is necessary smooth fiber plates must
be used in the Direct Clutch Assembly. Do not install grooved Fiber Plates in the Direct Clutch Assembly. Smooth fiber plates must always be used due
to specific calibrations.
