ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
0044 00
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
OPERATOR MAINTENANCE PROCEDURES
COLD WEATHER SYSTEM
c.
Open the top cover of the heater by unsnapping the three "screws" at the front of the
cover and lifting the cover.
d. Open the access panel at the top of the heater.
e. Disconnect the spark plug wire from the spark plug.
CAUTION
Be careful not to bend the fan blades. A bent fan blade may reduce the air supply
and result in faulty heater operation.
f.
Remove the spark plug from the burner head using a socket wrench.
SPARK PLUG
SPARK
PLUG
BURNER HEAD
WIRE
BEND HERE TO ADJUST GAP
Figure 3. Diesel Heater Spark Plug Removal and Adjustment.
2. Check the gap between the spark plug electrodes. The gap should be between 0.045 and 0.055.
3. Adjust the gap between the electrodes if necessary by bending the outside electrode.
4. Reinstall the spark plug as follows:
a. Screw the spark plug into the burner head.
b. Tighten snug tight using the socket wrench. (Do not over-tighten.)
c. Reconnect the spark plug wire to the spark plug.
5. Close the access panel.
6. Close and snap the top cover.
Diesel Heater Photocell Service:
Material:
Clean, dry, soft cloth (WP 0079, Table 1, item 23)
Equipment condition:
Diesel heater OFF and power cord disconnected from source and from heater
Cleaning the diesel heater photocell as follows (see Figure 4):
0044 00-5
