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 TM 55-1905-223-24-18-1
Table 2-2.
Troubleshooting - CONT
Malfunction
Test or Inspection
Corrective Action
ROTARY PUMP UNIT (FUEL OIL TRANSFER)
(PRELUBRICATING OIL TRANSFER
AND (DIRTY LUBRICATING OIL) - CONT
Reset circuit breaker for (dirty lubricating oil) pump at AUX MCHRY MCC
d.
and START/STOP pushbutton controller adjacent to pump.
Fuel oil transfer pumps No. 1 and No. 2 shut down during activation of
STEP 2.
halon system.
This is a normal shut down. Wait for all clear sign before proceeding with
checks.
Check for loose connection(s) or defective electrical wires/cable(s)
STEP 3.
between AUX MCHRY MCC/emergency switchboard 240 V distribution,
START/STOP pushbuttons, emergency stop pushbuttons for transfer and
dirty oil pumps.
Tighten loose connection(s). Replace electrical wires/cable(s).
(TM 55-1905-223-24-1810).
66. Noisy pump/motor operation.
STEP 1. Check for air or gas in liquid.
Identify source and correct problem.
STEP 2. Check for liquid vortexing (cavitation) in casing.
Release trapped air from pump casing.
STEP 3. Check for dry bearings.
Grease pump/motor bearing(s) (Lo 55-1905-223-12).
STEP 4. Check for loose or broken mounting bracket and bolts.
Tighten loose mounting bracket, Replace bracket/bolts.
STEP 5. Check for damaged pump/motor.
Replace pump/motor, para. 2-101.
GYRO INTERFACE ASSEMBLY
67. Gyro interface course reference dial moves in the opposite direction to vessel
turn.
Check to see if the wiring is reversed, See gyro interface wiring
STEP 1.
diagram schematic.
Synchro type inputs - reverse connections S1 and S2 on the terminal
a.
strip labeled Gyro Transmission Unit in the gyro interface unit.
2-129
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