Doosan DL06 - Page 193

DL06K Interim Tire-4 Diesel Engine Maintenance of Major Components
191
5.3.8. Diagnostics and troubleshooting
Complaints Possible causes Corrections
1. Excessive black smoke 1) Air cleaner element clogged Replace or clean
2) Restrictions in air duct Check and correct
3) Leakage at intake manifold Check and correct
4) Turbo charger seized up and not Disassemble/repair or
rotating replace
5) Turbine blades and compressor blades Disassemble/repair or
coming in contact with each other or replace
damaged
6) Exhaust piping deformed or clogged Check and correct
2. Excessive white smoke 1) Oil leak into turbine and compressor Disassemble/repair or
replace
2) Worn or damaged seal ring due to Disassemble/repair or
replace
excessive wear of bearing
3. Low engine output 1) Gas leak at each part of exhaust system Check and correct
2) Air cleaner element restricted Replace or clean
3) Turbo charger fouled or damaged Disassemble/repair or
replace
4) Leakage at discharge port on Check and correct
compressor side
4. Unusual sound or
vibration
1) Rotor assembly coming in contact Disassemble/repair or
replace
2) Unbalanced rotation of rotor Disassemble/repair or
replace
3) Seized up Disassemble/repair or
replace
4) Each joint loosened
Check and correct