S15/T15 Jimmy 2WD L4-119 1.9L VIN A 2-BBL (1983)
On June 28, 1984, or Julian Date 180, all models of the 1984 THM 700-R4 transmission (refer to Figure 1) were built using a new pump assembly to
reduce pump fluid leaks. This pump change is also used on all 1985 THM 700-R4 transmission models. Refer to Figure 2 for identification of the casting
changes and Figure 3 for the reference casting number locations.
When replacing the new pump body that is used on all 1985 THM 700-R4 transmissions, use service package Part Number 8649950. The previously
released service package, Part Number 8642986 MUST NOT be used in 1985 model transmissions as low line pressures may occur.
