TM-5-5420-202-20-1

M60A1 CHASSIS, TRANSPORTING; FOR BRIDGE, ARMORED-VEHICLE-LAUNCHED; SCISSORING TYPE, CLASS 60

TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE MANUAL; VOLUME 1 OF 4

OCTOBER 1985

TM-5-5420-202-20-1 - Page 632 of 1020

Change 6

4-414.11

DETAILED TROUBLESHOOTING PROCEDURE

VEHICLE OPERATION – HULL POWER

(Continued)

Symptom-31.1

TM 5-5420-202-20-1

First Technician (Commander’s Station)

•

Set multimeter to diode scale.

•

Connect black probe of meter to pin B on

bulkhead disconnect harness 12326539 and

red probe to ground.

•

Check if meter indicates 0.3 to 0.8 volts dc.

Check CKT 2 for open diode in alternator.

Does meter indicate 0.3 to 0.8 volts dc?

16

NO

YES

•

Replace alternator (page 10-1).

•

Connect front accessory harness

12326539 connector (CKT 2) to

bulkhead disconnect (page 10-269).

•

Disconnect “T” harness from

harness 12326542 connector (1,

1A, 532, 533, 534)

.

•

Connect harness 12326542

connector (1, 1A, 532, 533, 534) to

voltage regulator.

•

Replace commander’s floor plate

(page 17-9).

17

12326539