Fiat Kobelco EX355 Tier2, Technical Manual

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EX355 W5-9-3
TROUBLESHOOTING
INSUFFICIENT POWER
Condition Possible Cause Correction
Trouble in the air Clogged air cleaner element Clean or replace the air cleaner
intake system element
Trouble in the fuel Water particles in fuel system Replace fuel
system
Clogged fuel filter element Replace the fuel filter element or
cartridge
Clogged strainer or defective fuel feed Repair or replace the feed pump
pump
Injection nozzle sticking Replace the injection nozzle
Injection nozzle starting pressure too Adjust or replace the injection
low nozzle
Improper spray condition Adjust or replace the injection
nozzle
Fuel injection pipes damaged or Replace the injection pipes
obstructed
Defective delivery valve Replace the delivery valve
Injection timing improperly adjusted Adjust the injection timing
Repair or replace the timing
advancer
Worn plunger of the injection pump Replace the plunger assembly
Worn camshaft of the injection pump Replace the camshaft
Trouble in the Exhaust gas leakage from the exhaust Repair or replace the related parts
turbocharger system system
Air leakage from the intake system Repair or replace the related parts
Defective turbocharger assembly Replace the turbocharger assembly
Low compression Blown out cylinder head gasket Replace the related parts
pressure Worn cylinder liner
Piston ring sticking or broken
Improper seating between the valve and
valve seat
Trouble in the valve Valve clearance improperly adjusted Adjust the valve clearance
gear train
Worn camshaft lobe Replace the camshaft
Valve spring weak or broken Replace the valve spring
Trouble in the Clogged intercooler Clean the intercooler
intercooler