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 TM 55-1905-222-14
MAINTENANCE OF CANOPY, MAST, WINDOWS AND WIPERS
4-20
REPLACE MAST
This mast covers:
a. Removal
b. Installation
INITIAL SETUP
Tools:
Personnel Required:
Tool Kit, Mechanic's, Rail
Two (2)
and Marine
General Safety Instructions:
Equipment Conditions:
This is a two-person operation. Do not
attempt to lower and replace mast by
All power off Mast to be lowered
yourself (alone). Ensure mast is lowered
to its lowest configuration
gently so as not to damage the navigation
lights and compass.
REMOVAL
REMOVE THE MAST.
a.
Lower mast (1) to its lowest configuration while
still in the upright position Ensure the butt of the
mast is secured properly in the seat (2).
b.
Disconnect and
tag all wiring to navigation
lights mounted on the mast at the
socket
source at the rear of the pilothouse. All cables
connected to the mast should dangle freely.
c.
Remove the four nuts (3) and bolts (4) of mast
bracket (5) holding mast in upright position. Gently
lower mast assembly (6) to the deck, pivoting
around the base hinge (7).
d.
Remove all navigation lights and connecting
wiring as per para 4-7. Remove compass as per TB
55-6605- 262-24.
4-40
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