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Page Title:
Table 2-2. Troubleshooting - CONT |
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 TM 55-1905-223-24-4
Table 2-2. Troubleshooting - CONT
Malfunction
Test or Inspection
Corrective Action
STEP 3.
Check for contaminated fuel.
a.
Drain and flush fuel supply tanks.
b.
Replenish with clean fuel.
STEP 4.
Check for malfunctioning injectors.
Replace injectors (para. 2-39).
STEP 5.
Check to see if valve adjustment is correct.
Adjust valves. Refer to PMCS, Item 17.
STEP 6.
Check for defective fuel pump.
Refer to Malfunction 2, Step 7.
7. Low Engine Oil Pressure.
STEP 1.
Check oil level.
Replenish oil (PMCS, Item 1).
STEP 2.
Check to see if oil filter is plugged.
Change oil filter; review PMCS, Item 6.
STEP 3.
Check to see if oil is diluted or has incorrect viscosity.
Change oil. Refer to LO 55-1905-223-12 and PMCS, Item 6.
STEP 4.
Check for a malfunctioning pressure switch.
Replace pressure switch (para. 2-19).
a.
To check, remove the pressure switch, install a gauge,start the engine and measure oil pressure.
Minimum oil pressure: idle (675-725 rpm) -10 psi (69 kPa); full speed - 30 psi (207 kPa).
b.
To replace, disconnect the wire from the sending unit. Remove oil sending unit with socket wrench.
Replace with new oil sending unit, then reconnect the wire.
STEP 5.
Check to see if suction tube is loose or seal is leaking.
a.
Remove oil pan (para. 3-25).
b.
Inspect suction tube and gasket, repair as necessary.
c.
Replace oil pan (para. 3-25).
8. Fuel knock under load.
STEP 1.
Check to see if fuel pump timing is correct.
Visually verify fuel pump timing marks are aligned (para. 2-33).
2-25
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