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 TM 55-1905-242-14
DIRECT SUPPORT MAINTENANCE
FOR LANDING CRAFT, MECHANIZED (LCM-8) (ALL VESSELS WITH MOD 2 APPLICATION)
RAMP HOIST HYDRAULIC CHECK VALVE, REPLACE/REPAIR
INITIAL SETUP:
Tools and Special Tools:
Materials/Parts:
Tool Kit, Mechanic's Rail and Marine (Item 1,
Hydraulic Fluid (Item 1, Table 2, WP 0230 00)
Table 1, WP 0230 00)
Cleaning Solvent MIL-PRF-680 (Item 2, Table 2, WP 0230 00)
Suitable Drain Pan
Gloves, Chemical Protective (Item 3, Table 2, WP 0230 00)
Goggles, Industrial, No Vents (Item 4, Table 2,
Equipment Condition:
Propulsion engines secured, locked out, and
Rag, Wiping (Item 5, Table 2, WP 0230 00)
tagged out IAW FM 55-502
Sealant (Tape, Antiseizing) (Item 14, Table 2, WP 0230 00)
Crocus Cloth (Item 22, Table 2, WP 0230 00)
Personnel Required:
O-Ring (p/n 82-20220-21, qty 1)
One Watercraft Engineer, 88L
References:
FM 55-502
TM 55-1905-242-24P (WP 0091 00)
REMOVAL
WARNING
Cleaning solvent is flammable and its vapor is potentially explosive. Do not use clean-
ing solvent in the vicinity of spark, open flame, or excessive heat. Do not use cleaning
solvent in unventilated spaces. Failure to comply can result in serious injury or death.
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.
Don chemical protective gloves and goggles and position a suitable drain pan beneath the work area.
2.
Loosen, but do not remove, the inlet (1) and outlet (2) piping at the check valve (3) to permit any residual hydraulic fluid
or pressure to drain from the system.
3.
Disconnect the inlet (1) and outlet (2) piping and remove the check valve (3).
0187 00-1
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