TM 3-4230-218-12&P
4-9, TROUBLESHOOTING - Continued.
Table 4-2.
Organizational Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4-12
9.
10.
11.
12.
NO WATER TEMPERATURE INDICATION.
Notify direct support maintenance if this condition exists.
NO HEATER FUEL PRESSURE OR FLUCTUATING FUEL PRESSURE.
Notify direct support maintenance if this condition exists.
BURNER CHOKE DOES NOT RETURN.
Step 1.
Check for defective return spring on burner.
If spring is defective, replace spring.
If spring is not defective, proceed to step 2.
Step 2.
Check for dirt or corrosion in and around choke cable assem-
bly.
If cable casing is defective, replace casing (refer to page 4-54).
If casing is not defective, notify direct support maintenance.
BURNER WILL NOT LIGHT.
Step 1.
Check for fouled burner spark plug.
If spark plug is fouled, replace spark plug.
If spark plug is not fouled, proceed to step 2.
Step 2.
Check for defective igniter.
Test igniter by connecting igniter wire to uninstalled spark plug.
Position spark plug to allow uninsulated side of plug to touch an
electrically grounded surface.
Start engine.
If a spark does not
jump between electrodes of spark plug, igniter is defective.
If igniter is defective, replace igniter (see page 4-32).
If igniter is not defective, proceed to step 3.
