TM-9-2350-311-20-1

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR HULL, POWERPLANT, DRIVE CONTROLS, TRACKS, SUSPENSION, AND ASSOCIATED COMPONENTS

AUGUST 1994

TM-9-2350-311-20-1 - Page 207 of 1275

TM 9-2350-311-20-1

CONTINUED FROM STEP A

1. Reconnect air box heater fuel input hose

and install air box heater (para 5-8).

2. Turn MASTER and FLAME HEATER

switches ON.

3. Listen for a clicking sound from the fuel

solenoid or touch the fuel solenoid to confirm

that it is opening and closing.

4. Turn MASTER and FLAME HEATER

switches OFF.

Note results.

1. Disconnect air output hose at the pump and

motor assembly.

2. Turn MASTER-and FLAME HEATER

switches ON.

3. Check for airflow.

4. Turn MASTER and FLAME HEATER

switches OFF.

Note results.

3-107