Doosan GV158TIC, Operation & Maintenance Manual

Page: 138 / 162

Maintenance of major parts - 132 -
5.1.9. Trouble cause diagnosis and remedy
Condition Causes Remedies
1.Exhaust gas
excessive
1) Air cleaner elements clogged
2) Air Inlet port clogged
3) Air leaks from air intake system
4) Turbocharger impossible to rotate due to
stuck
5) Turbine wing's contact
6) Piping deformation or clogging of
exhaust system
Replace or clean
Inspect or repair
Inspect or repair
Overhaul and repair or replace
Overhaul and repair or replace
Inspect and repair
2.White smoke
excessive
1) Oil leaks into turbine and compressor.
2) Seal ring's abnormal wear or damage
Overhaul and repair or replace
Overhaul and repair or replace
3.Output lowered
1) Gas leak from various parts of exhaust
system
2) Air cleaner's elements clogged
3) Turbocharger's pollution or damage
4) Air leaks from discharge part of com-
pressor side
Inspect and repair
Replace or clean
Overhaul and repair or replace
Inspect and repair
4.Abnormal noises
or vibrations
1) Revolving parts' contact
2) Revolving imbalance of rotor
3) Stuck
4) Various connections loose
Overhaul and repair or replace
Overhaul and repair or replace
Overhaul and repair or replace
Inspect and repair