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 123 of 750

2-74.2
Change 3
First Technician (Operator’s Station)
Shut engine off.
Move ball valve to “TRAVEL” position.
Cycle bridge launching control levers.
Second Technician (Launcher Tongue)
Remove pressure gage or STE/ICE from
tongue dual counterbalance valve T1 quick
disconnect fitting.
First Technician (Operator's Station)
Start engine.
Launch the bridge (TM-10).
Move ball valve to “LAUNCH” position.
Set engine speed at 1800 rpm.
Raise tongue cylinder control lever.
Second Technician (Launcher Tongue)
Visually check hydraulic lines and fittings for
leaks, crimping or other damage.
NO
YES
TM 5-5420-228-24
DETAILED TROUBLESHOOTING PROCEDURE
LAUNCHER OPERATION – HYDRAULICS
(Continued)
Check tongue hydraulic lines and fittings for
broken or missing parts.
3
Identify leaking line by reference
on line with diagram (page 3-
67).
Replace leaking line.
Symptom-2.1
4
TONGUE
CYLINDER
Are hydraulic lines or fittings leaking or
damaged?


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