TOPIC 2. TORQUE CONVERTER AND PUMP

TM 10-3930-644-14&P

TOPIC 2. TORQUE CONVERTER AND PUMP

As noted previously, the function of the torque converter

Pump:

within the "Power-Shift" transmission is to provide a fluid

coupling, with torque multiplication, between the engine

1. Remove capscrews which mount the pump

and transmission.

assembly to the housing and remove pump.

(See Figure 1-4.)

The torque converter is a sealed unit and cannot be

disassembled or serviced.

NOTE

It may be necessary to lightly tap the

A. REMOVAL INSPECTION

pump with a rawhide hammer during

removal in order to free it from

1. After the transmission has been removed from

gasket.

the truck, carefully remove the torque converter

from transmission.

2. Remove all capscrews holding pump to stator

support and separate.

2. Inspect converter housing for evidence of cuts or

fractures and leaks.

3. Remove the seal rings and oil seal. (See Figure

2-1.)

3. Remove the converter oil plug, and drain from

transmission any remaining oil.

4. Remove the stator support and bushing. Install

new bushing.

4. Thoroughly clean and flush the converter with an

acceptable, noncorrosive solvent. Ensure that

5. Carefully inspect pump, and if gears, bushing or

all solvent is drained from converter prior to re-

housing show wear or damage, then the entire

installation.

pump assembly will have to be replaced.

Figure 2-1. Torque Converter and Pump Assembly

R-171-1

3-125