MTZ 1220.1, Operator'S Manual

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MTZ 1220.1/1220.3 Section J. Possible failures
М 1
Section J.
POSSIBLE FAILURES AND GUIDELINES FOR
TROUBLESHOOTING
Defect, external manifestation Way of elimination
DIESEL ENGINE
Diesel engine doesn't start
Air in fuel system. Pump over system by means of pump of
manual fuel pumping. Remove air inflow in
fuel system.
Oil pump is out of order. Take off fuel pump from the diesel engine
and hand over to workshop for repair.
Fuel filters are littered. Wash out the coarse fuel filter and replace
filtering elements of fine fuel filter.
The diesel engine is not enough warmed
up. Warm up diesel engine in cold weather by
means of available means of start simplifi-
cation.
The diesel engine does not develop full power
Lever of fuel pump control does not reach
against arrester. Adjust the rods of fuel pump control.
Filtering element of fine fuel filter is clogged. Replace filtering element.
Faulty injectors. Find the faulty injectors, wash and adjust them.
Wrong fuel injection advance angle. Set the recommended injection advance angle.
Pressure of boost has decreased. Remove turbocharger from diesel engine
and send it to workshop for repair.
Air gets in fuel system. Pump over fuel system by means of pump
of manual pumping.
Diesel engine fumes in all operating modes.
A. Black fume is emitted from the exhaust pipe
Diesel engine air cleaner is clogged.
Carry out technical maintenance of air
cleaner.
Injector atomizer needle hovers. Find defective atomizer, wash out and re-
place injector, adjust atomizer.
Defective fuel pump. Remove the fuel pump from the diesel engine
and send it for repair.
Diesel engine overload. Reduce diesel loading engaging low gear.
Wrong fuel injection advance angle. Set the fuel injection advance angle