TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
Page 206 of 1275
TM 9-2350-311-20-1 3-3 TROUBLESHOOTING CHART — CONTINUED h. FLAME HEATER CIRCUIT (ENGINE MODEL FLAME HEATER DOES NOT OPERATE 7083-7396) — CONTINUED General mechanic’s tool kit (item 64, Appx H) Two Multimeters (item 36, Appx H) TA-1 probe kit (item 43, Appx H) (Long test leads may be needed for some tests; Transmission left access door open (TM 9-2350-311-10) 16 AWG wire may be used as an extension.) Air intake grille open (TM 9-2350-311-10) WARNING If flammable vapors are present, do not perform step A. Performance of step A could cause fire or explosion. Do not touch coil assembly or air box heater while performing step A. High voltage is present and personal injury may result. Fuel is hazardous waste and must be disposed of in accordance with local procedures or direction of the local Hazardous Waste Management office. NOTE Use a container to catch any fuel that may flow out of the input and/or output hoses during the following steps. Disconnect air box heater fuel input hose. Remove air box heater with coil assembly to . air box heater lead attached (para 5-8). 3. Place a jumper wire from air box heater to ground. 4. Turn MASTER and FLAME HEATER switches ON. 5. Check for electric arc between electrode and wire in air box heater. Arc should be steady with a crackling sound. 6. Turn MASTER and FLAME HEATER switches OFF. Note results. 3-106