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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 5.
Check for a restricted fuel drain manifold or return line.
Remove restriction.
STEP 6.
Check for a fuel system leak/air in the fuel system.
Visually inspect for fuel leak/bleed the system. See PMCS, Item 12.
STEP 7.
Check for contaminated fuel.
Drain tank and replenish with clean fuel.
STEP 8.
Check to see if fuel pump is malfunctioning.
Refer to Malfunction 2, Item 6.
5. Engine surges at idle.
STEP 1.
Check level of fuel in the supply tank.
Replenish fuel if low.
STEP 2.
Check for cold engine.
Refer to "Engine running too cold," Malfunction 12.
STEP 3.
Check to see if idle speed is too low.
Adjust low idle screw (para. 3-12).
STEP 4.
Check for generator set engine mounts over torqued, damaged, or loose.
a.
Verify condition of engine mounts. Check correct torque.
b.
Torque to 120 ft-lb.
STEP 5.
Check to see if fuel pump is getting sufficient fuel or fuel system is aerated.
a.
Check the fuel flow.
Refer to Malfunction 2, Item 6.
b.
Bleed fuel system.
Refer to PMCS, Item 12.
STEP 6.
Check for malfunctioning injectors. Speed or power pr6blem with engine operating under load.
Replace injectors (para. 2-39).
STEP 7.
Check to see if fuel pump is malfunctioning.
Refer to Malfunction 2, Item 6.
6. Engine misfiring.
STEP 1.
Check to see if fuel injection lines are leaking.
Inspect/replace damaged lines (para. 2-39).
STEP 2.
Check for air in the fuel system.
Bleed the fuel system, PMCS, Item 12.
2-24
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