TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
Page 261 of 1275
TM 9-2350-311-20-1 CONTINUED FROM STEP A NOTE For steps H, 1, J, and K, use heavy jumper wires with alligator clips. 1. Disconnect powerplant wiring harness from alternator. 2. Place jumper wires from pin E (lead 3) of alternator to battery negative terminal and pin D (lead 1) of alternator to positive terminal of same battery to apply 12 Vdc to alternator field. 3. Turn MASTER switch ON and run vehicle engine at idle speed (750 rpm). 4. Set multimeters on ac scale, and place red lead of multimeters on pin A (lead 500) and black lead on pin B (lead 501). 5. Check for voltage. 6. Place red lead of multimeters on pin C (lead 502) and black lead on pin A (lead 500). 7. Check for voltage. 8. Turn MASTER switch and engine OFF. Is voltage above 27.5 Vdc? I Replace alternator (para 8-2). CONTINUED ON NEXT PAGE 3-161