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 274 of 750

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

TM 5-5420-228-24

8.

9.

10.

11.

12.

13.

14.

NOTE

Correct pressure is 3800 ± 50 psi (26220 ± 340 kPa).

Using wrench, remove adjusting screw cap (B).

To adjust relief valve pressure, hold adjusting screw (C) with 3/16 inch screw key and

use wrench to loosen jamnut (D).

Using 3/16 inch screw key, turn adjusting screw (C)

clockwise to increase pressure or counterclockwise to decrease pressure.

Repeat steps 3 through 9 until pressure gage shows reading of 3800±50 Psi (26220±

340 kPa).

Holding adjusting screw (C) with 3/16 inch screw key, use wrench to tighten jamnut

(D).

Using wrench, install adjusting screw cap (B).

Remove pressure gage.

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

TA251475

End of Task

3-77