A/T Input Housing and Shaft Assembly - Service

Number 83-I-95 Section 7 Date 06/83
Subject: THM 700-R4 INPUT HOUSING AND SHAFT ASSEMBLY SERVICE INFORMATION

Figure 1:

Beginning January 26, 1983, all THM 700-R4 transmissions were built with a new input housing and shaft assembly.. This new input housing and shaft assembly will have two (2) rows of oil drain holes in the housing with five (5) holes in each row (see Figure 1).
This is a running change on the input housing and shaft assembly and either part can be used for service.

ADDITIONAL SERVICE INFORMATION

Four (4) scarf cut teflon seals (part number 8642420) are used on the turbine shaft (refer to Figure 1).. These seals may be either of three (3) different colors (tan, yellow, or orange). The color is only used to identify the manufacturer of the seal and has no effect on service.

Figure 2:

Inspect any input housing and shaft assembly received from WDDGM. The front of the turbine shaft must contain a ball check valve and retainer assembly and the rear of the shaft must contain three (3) sealing balls (see Figure 2). If these parts are missing from the assembly, return the assembly to WDDGM and obtain the correct part.
The ball check valve and retainer assembly is available as a separate part, if required (part number 8647037 for 245 mm converter and 8634503 for 298 mm converter).

When reassembling an input housing and shaft assembly be certain to check the input housing to obtain shaft lip seal for nicks or damage (refer to Figure 2). If this seal is omitted or is damaged, it will result in lube starvation to the rear of the transmission.