Bonneville V8-350 5.7L DSL (1984)
FIGURE 3 - Pump Cover And Body
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 below for 1982 through 1985
model year THM 700-R4 service parts information.
MODEL YEAR(S)
PUMP BODY
PUMP COVER
PUMP ASSEMBLY
1982 through
Not
Not
See Note 1
1984
Available
Available
1985
8649950
See Note 2
Not Available
Notes:
1 - Use the WDDGM parts catalog for PUMP ASSEMBLY part numbers based on model application.