TM 55-1925-286-13&P
UNIT MAINTENANCE
AIR COMPRESSOR FOR
INLAND AND COASTAL LARGE TUG (LT)
ELECTRIC MOTOR, REPLACE
INITIAL SETUP:
Tools and Special Tools:
References:
Tool Kit, General Mechanic's (Item 1, Table 2,
FM 55-502
TB 43-0218
Multimeter (Item 4, Table 2, WP 0029 00)
Materials/Parts:
Tag, Danger (Item 6, Table 1, WP 0033 00)
Personnel Required:
Two Watercraft Engineers, 88L
WARNING
Never reuse locking hardware. Reuse of locking hardware such as lockwashers,
locking nuts, cotter pins, and lockwire can result in undetected loosening of fas-
tening hardware causing catastrophic component failure resulting in death, in-
jury, or damage to equipment. In accordance with TB 43-0218, ensure that all
locking hardware is discarded upon removal and replaced with new.
REMOVAL
1. Perform system shutdown for the applicable air compressor (WP 0005 00).
2. At 440V power panel no. 4, set to OFF, lock out, and tag out (FM 55-502) the applicable air compressor
circuit breaker as shown in table 1.
Table 1. AIR COMPRESSOR Lockout/Tagout Guide
AIR COMPRESSOR
Specific Breaker
1
AIR COMPRESSOR NO. 1
2
AIR COMPRESSOR NO. 2
3. Remove the four screws (figure 1, item 1) that secure the junction box cover (figure 1, item 2) to the electric
motor (figure 1, item 3). Remove and set aside the junction box cover.
0021 00-1
