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 TM 55-1905-242-14
UNIT MAINTENANCE
FOR LANDING CRAFT, MECHANIZED (LCM-8) (ALL VESSELS WITH MOD 2 APPLICATION)
24 VOLT WIRING, REPAIR
INITIAL SETUP:
Tools and Special Tools:
Personnel Required:
Tool Kit, Mechanic's Rail and Marine
Two Watercraft Engineers, 88L
(Item 1, Table 1, WP 0230 00)
Multimeter (Item 2, Table 1, WP 0230 00)
References:
FM 55-502
Equipment Condition:
FM 55-509-1
Battery isolation switches set to OFF,
locked out, and tagged out IAW FM 55-502
REPAIR
1.
Proper repair of 24 Volt wiring consists of replacement of the damaged wiring. When electrical casualty requires
expedient repairs, repair may be made by splicing. Splicing is authorized for repair of damaged cables if the remainder of
the cable is in good mechanical and electrical condition. The cable must be replaced in its entirety at the most opportune
time. For proper splicing methods, refer to FM 55-509-1.
2.
To replace 24 Volt wiring:
WARNING
Replace or repair components only after the affected circuit has been secured, locked
out, and tagged out. Performing replacement with the circuit energized may result in
damaged equipment and serious injury or death to personnel.
a.
Remove any inteference or covers that restrict access to the end of the wiring assembly.
b.
Set the multimeter to the Vdc (Volts direct current) setting and check the voltage at the wiring's terminals (1). If no
voltage is noted, proceed to the next step. If voltage is noted, ensure that the battery isolation switches are properly
secured.
c.
Label the wiring near the wiring's terminals (1), or make a sketch of the work area to permit proper assembly.
d.
Remove the nuts (2) that secure the wiring's terminals (1) to the studs (3) and remove the wiring's terminals from the
studs.
e.
Follow the wiring to its other end, freeing it from the vessel's structure as required.
f.
Perform steps c-d on the other end of the wiring.
g.
Procure a new wiring assembly.
h.
Determine which wiring's terminals (1) connect to which studs (3) using the labels or the sketch from step c as a
guide.
0095 00-1
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