Fault tracing
Remedial measures
A3.11.18.02
M20-M601C
en / 08.07.1997 BA000727 1/4
Ĺ
Engine starts poorly or does not start at all
Possible cause: Remedy:
• Air pressure in the starting air bottle is too See A1.05 for required bottle pressure
low
• Solenoid valve to the air starter is defective
• Air starter is defective
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Engine reaches ignition speed but does not fire
Possible cause: Remedy:
Governor does not admit fuel see manufacturer’s instructions in book C: siehe
• Stop cylinders are jammed and do not Governor failures
admit fuel
• Governor oil pressure is too low
Linkage between governor and injection pump see manufacturer’s instructions in book C:
control shaft is defective Governor failures
• Faulty connection between governor Control shaft is jamming; fuel feed pressure is
terminal shaft and injection pump control set too high
shaft
• Elastic element in the linkage of the
injection pump control shaft
• Injection pump control shaft cannot move
freely
Lack of fuel
• Day tank is empty
• Inadequate venting of the fuel system Vent the system; see A3.05.07.nn
• Isolating valves are not in operating
position
• Fuel filters are clogged Clean filters; see A5.05.07.12.01.nn
• Fuel feed pump is defective Repair or replace pump; see
A5.05.07.13.01.nn
• Lube oil pressure switch is defective or
misadjusted so that the solenoid valve
switches off after the starting attempt
• Engine is too cold Warm up engine; see A3.05.18.nn
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