ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
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TACTICAL WATER PURIFICATION SYSTEM (TWPS)
UNIT MAINTENANCE PROCEDURES
COLD WEATHER SYSTEM
ACCESS PANEL
FAN BLADE
COVER
MOTOR MOUNTING BRACKET
MOTOR AND PUMP ASSEMBLY
WHITE, BLACK, AND GREEN WIRES
RED WIRE
TRANSFORMER
AIR LINE
SCREEN
SCREW
Figure 6. Diesel Heater Motor and Pump Assembly Replacement.
2. Install the new motor and pump assembly as follows:
a. Set the motor and pump assembly on the motor mounting bracket so that the threaded
studs at the bottom of the motor fit thru the holes in the bracket.
b. Secure the motor to the bracket using the two lock nuts removed earlier.
c. Connect the air line to the bottom of the new pump.
d. Connect the green wire of the new motor to the motor mounting bracket, the white wire to
relay terminal one (1), the red wire to relay terminal two (2), and the black wire to relay
terminal three (3). (See Figure 5.)
e. Reinstall the ignition transformer. Refer to REPLACE and Diesel Heater Spark Plug
and Transformer Testing/Replacement.
f. Reinstall the fan blades. Refer to REPLACE and Diesel Heater Fan Replacement.
3. Close the access panel.
4. Close and snap the top cover.
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