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 TM 55-1905-223-24-10
CAUTION
Bow ramp hinge assemblies are a weight bearing surface. Before removal of
any components provide the service of a crane or use a lifting device to relieve
weight from main hinge pins.
a. Place supports in position so bow ramp can/be lowered onto them.
b. Refer to TM 55-1905-223-10 and start up bow ramp assembly. Lower bow ramp down on supports to relieve
weight on hinge assemblies.
c. Remove hex head machine bolts (1) and washer s (2) from hinged plate hinge covers (3), remove hinge covers
(3) from each outboard hinged plate (4) and remove hinged plates' exposing main hinge assemblies.
d. Remove hex head capscrews (5) with lockwasher (6) from locking plate (7) and remove locking plate.
e. Using a drift punch tap out and remove hinge pin (8) with lubrication fitting (9) and remove brass washers (10).
f.
Using crane or lifting device, raise hinge end of bow ramp enough to clear pin hole in male hinge plate from
female hinge plate. Use a drift punch to remove bushing (11).
REPAIR
Repair to main hinge assembly is by replacement.
REPLACEMENT
a. With hinge end of bow ramp still in raised position, install bushings (11) in male hinge plate pin hole. Lower bow
ramp and align male and female hinge plate pin holes.
b. Insert brass washers (10) aligning with pin holes and insert hinge pin (8) with lubrication fitting (9).
c. Insert locking plate (7) into pin slot. Align and install hex head cap screws (5) with lo ckwashers (6). Lubricate
hinge pin assembly.
d. Install outboard hinged plates (4) and set hinge covers (3). Install hex head machine bolts (1) with washers (2).
e. Refer to TM 55-1905-223-10 and start up bow ramp assembly. Raise ramp up off supports.
f.
Operate winch and raise bow ramp to full up position. Set both bow ramp chain stoppers and both ramp locking
assemblies in lock position and restore system to normal operation.
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