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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

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