TM-5-5420-228-24

LAUNCHER HYDRAULICS SYSTEM M48A5/M60A1 TANK CHASSIS, TRANSPORTING: FOR BRIDGE, ARMORED-VEHICLE-LAUNCHED; SCISSORING TYPE, CLASS 60

TECHNICAL MANUAL; ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT; MAINTENANCE MANUAL

AUGUST 1985

TM-5-5420-228-24 - Page 110 of 750

This procedure is to be performed by

two persons. The lead person is referred

to as the first technician and shall direct

the activity of the second person called

the second technician.

NOTE

HEU BRIDGE DOES NOT LIFT OFF BRIDGE SEAT.

Second Technician (Dual Counterbalance Valve)

x

Move ball valve to “TRAVEL” position.

x

Remove pump cover plate (page 3-65).

x

Start engine.

x

Visually check shouldered drive shaft for

rotation.

Check shouldered drive shaft for rotation at

hydraulic assembly.

1

Change 3

2-68.1

TM 5-5420-228-24

DETAILED TROUBLESHOOTING PROCEDURE

LAUNCHER OPERATION – HYDRAULICS

Is shouldered drive shaft rotating?

Check universal joints or power takeoff shaft for

damage.

Are universal joints or power takeoff shaft damaged?

x

Replace defective

universal joint(s) or power

takeoff shaft (page 3-62).

x

Notify support

maintenance of defective

power takeoff assembly.

NO

YES

NO

2

YES

Symptom-1.1