TM 9-2320-266-34
Table 24-1. Swingfire Heater Troubleshooting-Continued
Type of Trouble
Remedy
Reason
HARD TO START
Clean diaphragm valve.
a. Diaphragm valve dirty or
clogged; diaphragm sticks
Adjust distance of electrodes to
b. Spark plug electrodes distance
1-1.2 mm.
incorrect
Clean preheating plug or replace.
c. Preheating plug clogged or
defective (important at tempera-
tures below 30 F (-1 C))
SPUTTERS
Blow out fuel line with compressed air;
a. Fuel line clogged
clean fuel tank.
Remove and dismantle regulator valve,
b. Regulator valve closed or
clean and check, replace gaskets,
defective
and reinstall, if serviceable.
Remove, dismantle, clean, and check
c. Atomizing nozzle dirty
carburetor, replace gaskets, and
reinstall the nozzle.
Remove, clean, or replace diaphragm.
d. Diaphragm valve dirty or
diaphragm damaged
Remove and disassemble fuel regulator
Fuel regulator valve damaged
CONTINUES TO RUN IN SPITE
valve, clean and check, replace damaged
OF CLOSED FUEL REGULATOR
parts, and reinstall the valve.
KNOB
24-4. Personnel Heater Troubleshooting.
sonnel heater assembly, the electrical control box, fuel fil-
ter, fuel pump, and electrical cabling.
Table 24-2. Personnel Heater Troubleshooting
Remedy
Reason
Type of Trouble
FAILS TO START OR OUTPUT
TOO LOW
Place handle in open position.
a.
Shut-off cock not open
Insufficient fuel or no fuel
Clean or replace as required.
Fuel filter
b.
If inoperable, replace.
Fuel pump
c.
Fill fuel tank.
No fuel
d.
Tighten or replace.
Fuel line leaks
e.
Recharge or replace battery.
Low voltage
Insufficient or no current to heater a.
Tighten.
b.
Loose wiring harness connections
Tighten all connections. Check for
Poor wire connections
a.
Incorrect operations of heater
correct operation at control box.
controls
Place switch in HI position; if output
HI-LO switch
b.
still too low, check and replace if
necessary (1) control box, (2) fuel
control valve, or (3) fuel pump.
24-4
Change 5
