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
Clean or replace the diesel heater burner head assembly as follows:
WARNING
Mechanical and electrical hazard. Before opening up the top cover of the heater to
access the burner head assembly, be sure the heater power switch is OFF and the
power cord is unplugged from the power source and the heater. Failure to observe
this warning may result in injury or death from electrical shock.
1. Remove the burner head from the heater combustion chamber as follows:
a. Make sure the heater power switch is OFF.
b. Make sure the heater power cord is unplugged from the power source and from the
heater.
c. Open the top cover of the heater.
d. Open the access panel at the top of the heater.
e. Loosen the setscrew that secures the fan to the motor shaft and slide the fan off the
motor shaft. (Removing the fan makes it easier to access the burner head and reduces
the chance of damaging the fan.) (See Figure 1).
f. Disconnect the spark plug wire and remove the spark plug from the burner head.
g. Gently pull the photocell out of its mounting bracket.
h. Carefully pull the air hose off of the burner head.
i. Carefully pry the fuel line off of the burner head.
j. Remove the five screws that secure the burner head to the combustion chamber and lift
the burner head out.
k. If replacing the burner head assembly, remove the photocell bracket from the head, then
discard the head assembly.
SPARK PLUG
BURNER HEAD
SPARK PLUG WIRE
PHOTOCELL BRACKET
COVER
PHOTOCELL
ACCESS PANEL
FUEL LINE
AIR HOSE
FAN
Figure 1. Diesel Heater Burner Head Removal.
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