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TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download

Page 152 of 1275

3-3 TROUBLESHOOTING CHART — CONTINUED d. STARTER MOTOR CIRCUIT (M109A4/M109A5)— (2) COMBAT OVERRIDE SWITCH WILL NOT CONTINUED OVERRIDE INITIAL SETUP Applicable Configurations Personnel Required M109A4/M109A5 Two T OO I S Equipment Conditions General mechanic’s tool kit (item 64, Appx H) Transmission left access door open (TM 9-2350-311-10) Multimeter (item 36, Appx H) Battery access doors open (TM 9-2350-311-10) TA-1 probe kit (item 43, Appx H) Portable instrument panel cover removed (para 8-17) (Long test leads may be needed for some tests; 16 AWG wire may be used as an extension.) A 1. With MASTER switch ON and fuel shutoff handle pulled out, crank starter until it automatically shuts off. 2. Disconnect leads 14C and GND from combat override switch. 3. Place a jumper wire from lead 14C to lead GND wire. 4. Turn MASTER switch ON and push STARTER switch. 5. Turn MASTER switch OFF. Does engine crank? Replace combat override switch (para 8-40). CONTINUED ON NEXT PAGE 3-52 TM9-2350-311-20-1