A/T - 700R4 Updated Oil Pump

SIL 85-35

SUBJECT: 700 R4 PUMPS











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.




The pump body and cover are not serviced separately in 1982 through 1984 THM 700-R4 transmissions. Refer to the chart for 1982 through 1985 model year THM 700-R4 service parts information.

NOTES:

1 - Use the WDDGM parts catalog for PUMP ASSEMBLY part numbers based on model application.

2 - Use the WDDGM parts catalog for PUMP COVER part numbers based on model application.

Refer to the appropriate Service Information Manual for removal and installation procedures.