TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
Page 396 of 1275
TM 9-2350-311-20-1 3-3 TROUBLESHOOTING CHART — CONTINUED aa. PERSONNEL VENTILATION BLOWER CIRCUIT — PERSONNEL VENTILATION BLOWER FAILS TO CONTINUED OPERATE T OO I S General mechanic’s tool kit (item 64, Appx H) Multimeters (item 36, Appx H) TA-1 probe kit (item 43, Appx H) A 1. Disconnect accessory control box-to-heater/ blower wiring harness from personnel ventilation blower. 2. Place a jumper wire from socket B (lead 159A) to ground. 3. Place red lead of multimeters in socket A (lead 159C) and black lead to ground. 4. Turn MASTER switch ON, VENTILATOR BLOWER switch in EXHAUST position and check for voltage. 5. Place VENTILATOR BLOWER switch in INTAKE position and check for voltage. 6. Turn MASTER and VENTILATOR BLOWER INTAKE switches OFF. Is voltage present in one position? Go to step D. CONTINUED ON NEXT PAGE 3-296