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 296 of 750

TM 5-5420-228-24

TONGUE CYLINDER HYDRAULICS, RELIEF VALVE (RV4),

AND CHECK VALVE (CV4) REPLACEMENT (Sheet 1 of 4)

PROCEDURE INDEX

PROCEDURE

PAGE

Removal

Installation

3-99

3-100

TOOLS: l-1/8 in. open end wrench

12 in. adjustable wrench

1-3/8 in. open end wrench

15 in. adjustable wrench

l-1/4 in. open end wrench

Vise

SUPPLIES:

Drip pans [suitable containers)

Pencil (Item 22, Appendix D)

Rags (Item 12, Appendix D)

Pipe tape (Item 19, Appendix D)

Masking tape (Item 18, Appendix D) Protective caps and plugs

REFERENCE:

LO 5-5420-202-12

PRELIMINARY PROCEDURES:

Remove tongue cylinder armor (page 3-232)

Relieve hydraulic pressure (page 3-71)

Remove tongue cylinder flow regulator (page 3-114)

REMOVAL:

1.

2.

3.

4.

5.

Holding nipple (A) with 1-1/8 inch wrench, use 1-1/4 inch wrench to disconnect hose

assembly “CH” (B) from nipple (A).

Holding elbow (C) with 15 inch adjustable wrench, use 1-1/4 inch wrench to remove hose

assembly “CK1” (D) from elbow (C).

Using 1-1/8 inch wrench, remove nipple (E) and attached parts as an assembly from relief

valve “RV4” (G).

Holding check valve “CV4” (F) with 1-3/8 inch wrench, use 15 inch adjustable wrench to

remove relief valve “RV4” (G) from check valve “CV4” (F).

Using 1-1/8 inch wrench, remove nipple (H) and its attached parts as an assembly from

tongue cylinder (J).

Go on to Sheet 2

TA251497

3-99