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?