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 TM 55-1905-223-24-10
WARNING
With bow ramp in raised position, ensure that both chain stopper and
both ramp locking assemblies are in locked position before removal of
bow ramp shackle, turnbuckle, wire rope or stud chain. Failure to do so
may cause bow ramp to lower endangering personnel and vessel.
a. Refer to TM 55-1905-223-10 and start up bow ramp assembly.
b. Operate winch and provide slack to wire ropes to relieve tension across sheave assembly. Refer to TM 55-1905-
223-10 and shut down system.
CAUTION
As a safety precaution secure bow ramp to a suitable deck fitting using a
lifting device with opposite end attached to one or both bow ramp
shackles.
c. Take slack wire rope from appropriate sheave assembly and tie back to allow easy access; for type A & B
assemblies only, first loosen and remove self-locking hexnut (3), machine bolt (1), and sleeve tube (2).
d. Remove machine bolt (8), lockwasher (9), and locking plate (10) from side of sheave assembly.
e. On opposite side of assembly, use a small drift punch and remove sheave pin (6) with grease fitting (7).
NOTE
Support sleeve in foundation assembly until pin is removed.
f. Remove brass washers (4) and sheave (5) from foundation.
REPAIR
Repair of the pulley sheave assembly is replacement of the assembly.
REPLACEMENT
a. To install sheave assembly, insert sheave (5) and brass washers (4) into sheave foundation assembly. Align
washer and sheave pin holes with those in foundation and install sheave pin (6) with grease fitting (7).
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