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 637 of 1020

4-414.16

Change 6

TM 5-5420-202-20-1

DETAILED TROUBLESHOOTING PROCEDURE

VEHICLE OPERATION – HULL POWER

(Continued)

Symptom-31.1

Second Technician (Operator’s Station)

•

Start Engine.

•

Set Idle speed to 750 RPM.

•

Turn OFF all lights, ventilator blowers and

radio equipment.

•

Connect red probe of meter to "T" harness

socket A and black probe socket C.

•

Check if meter indicates 25 to 30 volt dc.

Check CKT 1A at voltage regulator for 25 to 30

volts dc.

Does meter indicate 25 to 30 volts dc?

28

•

Stop Engine.

•

Set FUEL PUMPS switch OFF.

•

Set MASTER BATTERY switch

OFF.

•

Disconnect “T” harness from

harness 12326542 connector (1,

1A, 532, 533, 534)

.

•

Disconnect “T” harness from

voltage regulator.

•

Replace voltage regulator (page

10-1).

29

NO

YES