TM 10-3510-208-12
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
TS 10-3510-208-12/3-3
3. Screw
1. Screw
2. Sump
4. Fuel Pump
Figure 3-3. Fuel pump and fuel filter service.
2. AIR HEATER FUEL PUMP FAILS TO DELIVER FUEL
Step 1. Check for loose fuel lines.
Tighten loose fuel lines.
Step 2. Check the fuel pump strainer for clogging.
Service the air heater fuel pump using instructions listed under 1. WATER HEATER FUEL PUMP FAILS
TO DELIVER FUEL, a. through g.
NOTE
Water heater fuel pump and air heater fuel pump are serviced in a similar manner.
3. BURNER FLAME FAILS
Step 1. Check for loose fuel lines.
Tighten loose fuel lines.
Step 2. Check for empty fuel supply drum.
Fill drum with fuel.
4. PULSATING FLAME
Step 1. Check the air shutter to see if the vent holes are blocked.
Adjust the shutter by depressing the pin and spring and moving the shutter up or down until a near clear
smoke emits from the exhaust duct, approximately of total opening.
3-10
