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 641 of 1020

4-414.20

Change 6

TM 5-5420-202-20-1

DETAILED TROUBLESHOOTING PROCEDURE

VEHICLE OPERATION – HULL POWER

(Continued)

Symptom-31.1

First Technician (Top Deck)

•

Have powerplant removed (page 5-2).

First Technician (Powerplant)

•

Disconnect harness 12468994 from J1 of

alternator.

•

Connect jumper wire from contact A (CKT 533)

of harness 12468994 to contact B (CKT 534).

•

Connect red probe of meter to socket C of

engine disconnect harness 12468994

connector and black probe to socket L.

•

Check if meter indicates continuity.

Check engine electrical harness (CKTs 533 and

534) from connector at engine disconnect to J1

on alternator.

Does meter indicate continuity?

37

•

Replace engine electrical harness

12468994 (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).

NO

38

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).

39

12468994

12468994