ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
0064 00
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
UNIT MAINTENANCE PROCEDURES
COLD WEATHER SYSTEM
SERVICE
Diesel Heater Air Pump Pressure Adjustment:
Tools:
0-10 psig pressure gauge
Equipment condition:
Diesel heater OFF and power cord disconnected from source and from heater
Adjust the diesel heater air pump pressure as follows (see Figure 18):
1. Remove the plug from the air filter housing.
2. Install the pressure gauge into the hole.
3. Start the heater (it is not necessary to have fuel in the tank for this pressure check and
adjustment.)
4. Pump pressure should read five psi, plus or minus one-quarter psi. If the pressure is not within
this range, adjust the pressure relief valve as follows:
a. Loosen the lock nut.
b. Screw the pressure adjust screw in to raise the pressure; out to lower the pressure.
c. Tighten the lock nut.
5. Turn the heater OFF
6. Remove the gauge.
7. Reinstall the plug.
PLUG
LOCKNUT
PRESSURE GAUGE AND PIPE
PRESSURE
ADJUST SCREW
Figure 18. Diesel Heater Air Pump Pressure Adjustment.
END OF WORK PACKAGE
0064 00-25/26 BLANK
