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 TM 55-1905-223-24-18-1
Table 2-2.
Troubleshooting - CONT
Malfunction
Test or Inspection
Corrective Action
FUEL OIL TRANSFER PIPING SYSTEM
Low transfer pump discharge pressure.
228.
STEP 1. Check for incorrect valve alignment.
Check alignment and realign (TM 55-1905-223-10).
STEP 2. Check for closed suction valve.
Fully open suction valve.
STEP 3. Check for malfunctioning pump.
Refer to PUMPS AND MOTORS troubleshooting.
F u e l oil fails to flow into tanks during filling operation.
229.
Check for lack of pressure in fuel hose at fill station.
STEP 1.
P r o b l e m at supply facility.
b.
Notify supply facility of lack of receiving pressure.
STEP 2. Check for improper valve line up for fill operation.
a. Deck fill connection valve (FO-3) not fully open. Open fill connection
valve completely.
b. Transfer main or defuel main cutout valve open. Verify that the valve
cross-connecting the transfer and defueling are closed.
Erratic receiving tank pressure and level indications during filling
230.
operations.
STEP 1.
Check for air trapped in tank.
Inspect tank vent valves for obstructions or damage.
b.
Repair or replace vent valves as necessary.
Erroneous tank level indications.
231.
STEP 1. Sound tank manually with sounding tape.
Refer to TANK LEVEL INDICATORS troubleshooting.
STEP 2. C h e c k for faulty electrical circuitry.
Refer to TANK LEVEL INDICATORS troubleshooting.
STEP 3.
Check for buildup of deposits on the tank level stem preventing free
movement of the float.
Empty the tank and clean the level stem. Refer to Tank Level Indicators
troubleshooting.
2-173
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