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 TM 55-1905-242-14
UNIT MAINTENANCE
FOR LANDING CRAFT, MECHANIZED (LCM-8) (ALL VESSELS WITH MOD 2 APPLICATION)
AN/APX-72 TRANSPONDER, REPLACE
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)
References:
Multimeter (Item 2, Table 1, WP 0230 00)
FM 55-502
Equipment Condition:
TM 55-1905-242-24P (WP 0042)
IFF APX-72 circuit breaker set to OFF, locked
out, and tagged out IAW FM 55-502
REMOVAL
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.
1.
Label and disconnect the wiring from the transponder terminals (1). Set the multimeter to the Vdc (Volts direct current)
setting and check for voltage at the transponder terminals. If no voltage is noted, proceed to the next step. If voltage is
noted, ensure that the circuit breaker is properly secured.
2.
Loosen, but do not remove, the nuts (2) and washers (3) that secure the brace (4) to the T-bolts (5). Loosen the nuts and
washers until the T-bolts and brace can be tilted forward to free the transponder (6).
3.
Lift the transponder (6) free of its mount (7).
0120 00-1
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