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 114 of 750

Second Technician (Operator's Station)

•

Move ball valve to “TRAVEL” position.

•

Shut engine off.

•

Cycle bridge launching control levers.

First Technician (Overhead Cylinder)

•

Remove pressure gage or STE/ICE from

counterbalance valve T2 and install gage plug.

Second Technician (Operator's Station)

•

Start engine.

•

Move ball valve to “LAUNCH” position.

•

Set engine speed at 1800 rpm.

•

Raise overhead cylinder control lever

momentarily.

First Technician (Top Deck)

•

Visually check that holddown cylinder does

release.

Check that hold down cylinder does release.

10

FROM STEP 6

•

System is operational.

•

Install overhead cylinder armor

(page 3-224).

•

Perform launch and retrieve

procedures (TM-10).

YES

NO

Change 3

2-68.5

11

TM 5-5420-228-24

DETAILED TROUBLESHOOTING PROCEDURE

LAUNCHER OPERATION – HYDRAULICS

(Continued)

Symptom-1.1

Does holddown cylinder release?