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 TM 55-1905-242-14
UNIT MAINTENANCE
FOR LANDING CRAFT, MECHANIZED (LCM-8) (ALL VESSELS WITH MOD 2 APPLICATION)
STARTING HYDRAULIC SYSTEM CONTROL VALVE, REPLACE
INITIAL SETUP:
Tools and Special Tools:
Personnel Required:
Tool Kit, Mechanic's Rail and Marine
Two Watercraft Engineers, 88L
(Item 1, Table 1, WP 0230 00)
Multimeter (Item 2, Table 1, WP 0230 00)
Materials/Parts:
Suitable Drain Pan
Hydraulic Fluid (Item 1, Table 2, WP 0230 00)
Gloves, Chemical Protective (Item 3, Table 2, WP 0230 00)
Equipment Condition:
Goggles, Industrial, No Vents (Item 4, Table 2,
Propulsion engines secured, locked out,
and tagged out IAW FM 55-502
Sealant (Tape, Antiseizing) (Item 14, Table 2, WP 0230 00)
All accumulators blown down
STBD or PORT ENGINE CIRCUIT FUSE
References:
removed, locked out, and tagged out IAW
FM 55-502
FM 55-502
TM 55-1905-242-24P (WP 0017)
REMOVAL
WARNING
Replace or repair components only after the affected circuit has been secured, locked
out, and tagged out. Performing replacement with the circuit energized may result in
damaged equipment and serious injury or death to personnel.
Do not allow hydraulic fluid or cleaning solvent to come in contact with unprotected
skin or eyes. Prolonged skin contact can cause illness or injury. Eye contact can cause
serious injury. Always wear chemical protective gloves and goggles when handling
used hydraulic fluid and cleaning solvent. Failure to comply can result in illness, seri-
ous injury, or death.
Hydraulic hoses and lines may be under pressure. Relieve pressure by operating the
appropriate control valve if possible. Loosen fittings on hose lines slowly. Allow oil to
run around threads of fitting, releasing pressure before disconnecting fitting. Releasing
pressurized oil suddenly can cause serious injury or death.
1.
Set the multimeter to the Vdc (Volts direct current) setting. Check for voltage at the electrical leads (1). If no voltage is
noted, proceed to the next step. If voltage is noted, ensure that the STBD or PORT ENGINE CIRCUIT FUSE is removed.
2.
Label and disconnect the electrical leads (1) at the control valve (2).
3.
Don chemical protective gloves and goggles.
0088 00-1
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