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 273 of 750

TM 5-5420-228-24

MASTER RELIEF VALVE (RV1) ADJUSTMENT (Sheet 1 of 2)

TOOLS: 1/4 in. socket head screw key

3/16 in. socket head screw key

9/1 6 in. open end wrench

SPECIAL TOOL: Gage, pressure (item 3, sec III, app B)

PERSONNEL:

REFERENCE:

PRELIMINARY

Two

TM 5-5420-202-10

PROCEDURE:

Relieve hydraulic pressure (page 3-71)

ADJUSTMENT:

1.

Using 1/4 inch screw key, remove plug (A).

(page 2-47).

2.

Manually install pressure gage in opening left by removal of plug (A).

3.

Engage hydraulic pump (TM 5-5420-202-10).

4.

Set engine speed at 1800 rpm.

5.

Slowly press down scissor cylinder control lever all the way and hold in that position.

6.

Have second technician observe pressure gage reading.

7.

Return scissor cylinder control lever to neutral position.

Go on to Sheet 2

TA251474

3-76