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DETAILED TROUBLESHOOTING PROCEDURE LAUNCHER OPERATION - HYDRAULICS - Continued
DETAILED TROUBLESHOOTING PROCEDURE LAUNCHER OPERATION - HYDRAULICS - Continued

Launcher Hydraulics System M48A5/M60A1 Tank Chassis, Transporting: For Bridge, Armored-Vehicle-Launched; Scissoring Type, Class 60 Page Navigation
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TM 5-5420-228-24
DETAILED TROUBLESHOOTING PROCEDURE
LAUNCHER OPERATION ­ HYDRAULICS
(Continued)
Symptom-2.1
3
Check tongue hydraulic lines and fittings for
broken or missing parts.
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
TONGUE
leaks, crimping or other damage.
CYLINDER
Are hydraulic lines or fittings leaking or
damaged?
4
·
Identify leaking line by reference
on line with diagram (page 3-
67).
· Replace leaking line.
NO
YES
2-74.2
Change 3






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