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 305 of 750
TM 5-5420-228-24
SCISSORS CYLINDER RELIEF VALVE (RV8) AND FLOW REGULATOR (PCV3) REPLACEMENT
(Sheet 3 of 4)
INSTALLATION:
Remove all caps and plugs as necessary during installation.
Before installation, use pipe tape on all male threads. Start
tape on second thread so tape will not enter hydraulic system.
1.
2.
3.
4.
5.
6.
7.
8.
NOTE
Place relief valve “RV8” (A) in vise.
NOT E
You must install parts in relief valve
“RV8” (A) exactly as shown, or
valve will not install or function
properly.
Using 1-1/8 inch wrench, install nipple (B)
on relief valve “RV8” (A).
Using 1-3/8 inch wrench, install bushing (C)
on nipple (B).
Holding bushing (C) with 1-3/8 inch wrench, use 15 inch adjustable wrench to install flow
regulator “PCV3” (D) on bushing (C) with flow arrow pointing away from relief valve “RV8” (A).
Holding flow regulator “PCV3” (D) with 15 inch adjustable wrench, use 1-3/8 inch wrench
to install bushing (E) on flow regulator “PCV3” (D).
Using 12 inch adjustable wrench, install elbow (F) on relief valve “RV8” (A).
Holding elbow (F) with 12 inch adjustable wrench, use 1-1/8 inch wrench to install adapter
(G) and collar “CG” (H) on elbow (F).
Remove relief valve “RV8” (A) and attached parts from vise and position between welded
support brackets (J) in vehicle.
9.
10.
11.
12.
Manually install elbow (K) and collar “CF2”
(L) to relief valve “RV8” (A).
Install adapter (M) and collar “CJ” (N)
in bushing (E).
Holding relief valve “RV8” (A) with 15 inch
adjustable wrench, use 12 inch adjustable
wrench to tighten elbow (K).
Holding bushing (E) with 1-3/8 inch wrench,
use 1-1/8 inch wrench to tighten adapter (M).
Go on to Sheet 4
TA251506
3-108
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