TM 5-5420-228-24
DETAILED TROUBLESHOOTING PROCEDURE
LAUNCHER OPERATION HYDRAULICS
(Continued)
Symptom-1.1
12
Check holddown cylinder hydraulic lines and
fittings for leaks or damage.
Second Technician (Operator's Station)
Move ball valve to "TRAVEL" position.
First Technician (Top Deck)
Remove holddown cylinder armor (page 3-
Second Technician (Operator's Station)
Move ball valve to "LAUNCH" position.
Set engine speed at 1800 rpm.
Momentarily raise overhead cylinder control
lever.
First Technician (Top Deck)
Visually check holddown cylinder hydraulic
lines for leaks or damage.
Are hydraulic lines leaking or damaged?
13
Identify leaking hydraulic line by
reference designator on line
with diagram (page 3-67).
YES
NO
Replace leaking line.
2-68.6
Change 3
