Doosan 9/235HA Operation & Maintenance Manual page 36

34 ENGINE INSTRUCTION MANUAL
Low engine output.
Excessive oil consumption.
Excessive fuel consumption.
9/235HA, 10/215HA
Incorrect injection pump
adjustment
Low cylinder compression
pressure
Incorrect oil.
Engine burning oil.
Oil leakage.
Fuel leakage.
Excessive injection volume.
Excessive mechanical loads.
Incorrect injection timing
Injection nozzle malfunction
Insufficient fuel supply to the
injection pump
Governor malfunction
Cylinder compression leakage
Insufficient air intake volume.
Wrong selection of type and viscosity.
Too much oil quantity.
Faulty piston rings/damaged cylinder bores.
Faulty valve stem seal.
Damaged seal / Damaged turbocharger seal
Loose joints/gaskets.
Improper installation of filter and piping.
Damaged seals.
Improper component installation or tightening.
Injection pump defective.
Too far advanced.
Too far retarded.
Incorrect injection pressure.
Incorrect spray condition.
Lack of fuel in tank.
Air in injection pump.
Fuel filter clogged.
Overflow valve malfunction.
Incorrect engine control
adjustment.
Deteriorated governor spring.
Incorrect valve clearance
adjustment.
Injector nozzle misalignment.
Cylinder bore wear.
Air cleaner clogged.
Restricted air flow.