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 171 of 750

TM 5-5420-228-24
DETAILED TROUBLESHOOTING PROCEDURE
LAUNCHER OPERATION – HYDRAULICS
(Continued)
Symptom-6.1
First Technician (Operator's Station)
x
Shut engine off.
x
Move ball valve to “TRAVEL” position.
x
Cycle bridge launching control levers.
Second Technician (Launcher Tongue)
x
If STE/ICE is available, proceed to test No. 51
(page 2-58.1) to test scissors dual
counterbalance valve T1 quick disconnect
fitting.
x
If STE/ICE is not available, connect adapter
hose to gage and adapter to scissors dual
counterbalance valve T1 quick disconnect
fitting.
First Technician (Operator's Station)
x
Start engine.
x
Move ball valve to “LAUNCH” position.
x
Set engine speed at 1800 rpm.
x
Lower scissors cylinder control lever.
Second Technician (Launcher Tongue)
x
Check if pressure gage or STE/ICE is between
3350 to 3450 psi.
Check scissors dual counterbalance valve for
pressure setting of between 3350 to 3450 psi.
Is pressure between 3350 to 3450 psi?
13
x
Replace cartridge (C1) in
scissors dual counterbalance
valve (page 3-204.64).
x
Replace scissors dual
counterbalance valve (page 3-
204.32).
14
15
NO
YES
2-96.8
Change 3


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