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 TM 55-1905-223-24-18-1
Replace/Repair Motor Control Box Assembly.
This task covers:
a. Removal, b. Repair, c. Replacement.
INITIAL SETUP
Tools
Equipment Condition
Electrical power turned OFF at power
Tool kit, general mechanic's,
Panel, switch tagged "Out of
Service - Do Not Operate,"
Materials/Parts
Motor control box assembly
P/N 1282-L
Cartridge fuse P/N MDL-l/2
Warning tag, Item 1, Appendix C
REMOVAL
Open hinged cover of motor control box assembly (1) by loosening two
a.
fasteners (2).
Remove and tag electrical wires.
b.
Remove machine bolts (4), plain hexagon nuts (6) and lockwashers (5) holding
c.
motor control box assembly (1) to first stage vessel bracket.
REPAIR
Remove cartridge fuse (3).
a.
Install new cartridge fuse (3).
b.
REPLACEMENT
a.
Install motor control box (1) on first stage vessel bracket with machine
bolts (4). lockwashers.(S) and plain hexagon nuts (6).
Install electrical wires and remove tags.
b.
Close hinged cover of motor control box assembly (1) and tighten two
c.
fasteners (2).
Remove warning tag from power panel and restore power.
2-227
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