ARCTIC HEATER DIAGNOSTIC TROUBLESHOOTING (ORGANIZATIONAL LEVEL) (MODEL B)-continued

TM 9-2320-279-20-1

Troubleshooting Malfunctions (Cont)

2-15. TROUBLESHOOTING INSTRUCTIONS (CONT).

Table 2-9.

Troubleshooting (Cont)

Malfunction

Test or Inspection

Corrective Action

ARCTIC HEATER KIT (CONT)

9. ARCTIC HEATER DIAGNOSTIC TROUBLESHOOTING (ORGANIZATIONAL LEVEL) (MODEL B)

(CONT).

Step 32.

Perform fuel metering pump quantity test.

a. Disconnect fuel line from arctic heater and place in graduated 1 quart (950 ml)

measuring container.

b. Turn arctic heater switch on.

If arctic heater does not attempt to start, arctic heater may be in lockout, go to

Step 30.

c. Observe fuel delivery. Fuel metering pump will start approximately 63 seconds after

arctic heater switch is turned on. Stop 105 seconds after the switch is turned on and

restart 180 seconds after the switch is turned on.

d. When fuel metering pump stops after the second restart, turn arctic heater switch off.

e. Reconnect fuel line to arctic heater.

f. Measure fuel delivered to measuring container.

If arctic heater fuel metering pump delivers at least 0.62 ounces (18.64 ml) of fuel,

go to Step 33.

If no fuel is delivered and audible clicking is heard from fuel metering pump, go to

Step 34.

If arctic heater fuel metering pump delivers less than 0.62 ounces (18.64 ml) of fuel,

replace arctic heater fuel metering pump (para 20-3) and go to Step 44.

Step 33.

Go to Step 45.

2-268.8

Change 7