A/T - THM 700-R4 New Input Housing and Shaft Assembly
Number: 84-117Section: 7A (VIIc)
Date: April, 1984
Subject: NEW INPUT HOUSING AND
SHAFT ASSEMBLY
Model and Year: ALL THM 700-R4 TRANSMISSIONS
TO: ALL CHEVROLET DEALERS
Beginning January 11, 1984 (Julian Date 011), all THM 700-R4 transmissions were built with a new input housing and shaft assembly.
FIGURE 1 - FORMER INPUT HOUSING & SHAFT ASSEMBLY:
The past input housing and shaft assembly had a check ball seat drilled into the housing.. A check ball was installed into this hole and the opening was staked to retain the check ball (see Figure 1).
FIGURE 2 - NEW INPUT HOUSING & SHAFT ASSEMBLY:
The new input housing and shaft assembly has a check valve retainer and ball assembly which is pressed into the housing (see Figure 2).
SERVICE INFORMATION
1. Only the new input housing and shaft assembly is available for service. The check valve retainer and ball assembly will be available at a later date. Refer to the parts manual for correct part numbers and model applications.
2. The check valve retainer and ball assembly must not be installed in the past input housing and shaft assembly. Damage to the piston or housing lip seal surface could result.