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 TM 55-1905-242-14
OPERATOR MAINTENANCE
FOR LANDING CRAFT, MECHANIZED (LCM-8) (ALL VESSELS WITH MOD 2 APPLICATION)
OPERATOR TROUBLESHOOTING PROCEDURES
RAMP SYSTEM
INITIAL SETUP:
Personnel Required:
One Watercraft Engineer, 88L
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Ramp continues to lower
Check to see if the hand pump lower shutoff
CLOSE the valve.
with the control in
valve is OPEN.
NEUTRAL.
2. Ramp control valve
1.
Check to see if the Power Take-Off (PTO) is
Engage PTO.
moves, but the winch
engaged.
cable does not.
2.
Check to see if the hydraulic diverter valve is
Place the hydraulic diverter
in the RAMP position.
valve in the RAMP position.
3.
Check the oil level in the reservoir.
Replenish the oil as necessary.
4.
Check the hydraulic lines for leakage or
Repair the leakage or notify
damage.
unit maintenance.
3. Ramp hand pump does
Check to see if the hand pump bypass valve is
CLOSE the hand pump
not develop pressure.
OPEN.
bypass valve.
4. Ramp hydraulic pump is
Check pump coupling for misalignment or
Notify direct support main-
noisy.
damage.
tenance if misalignment or
damage is found.
5. Ramp operation is slow.
1.
Check to see if lower hand pump shutoff valve
CLOSE the valve.
is OPEN.
2.
Check engine speed.
Increase engine speed if
necessary.
3.
Check that both pumps are engaged.
Engage both pumps.
END OF WORK PACKAGE
0040 00-1/2 blank
0040 00-1
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