Doosan DL06 - Page 182

DL06K Interim Tire-4 Diesel Engine Maintenance of Major Components
180
5.2.3. Diagnosis and troubleshooting of cause of failure
Complaints Possible causes Corrections
1. Oil consumption
excessive
● Poor oil ● Use suggested oil
● Oil seal or packing leaky ● Replace
● Pistons or piston rings worn ● Replace pistons and/or piston rings
● Cylinder liner worn ● Replace cylinder liner
● Piston rings sticking ● Replace pistons and/or piston rings
● Valve guide oil seals or valve
guides, or valve stem worn
● Replace
2. Oil pressure too low ● Poor oil ● Use suggested oil
● Relief valve sticking ● Replace
● Restrictions in oil pump strainer ● Clean strainer
● Oil pump gear worn ● Replace
● Oil pump feed pipe cracked ● Replace
● Oil pump defective ● Correct or replace
● Oil pressure gauge defective ● Correct or replace
● Various bearings worn ● Replace
3. Oil deteriorates quickly ● Restriction in oil filter ● Replace filter element
● Gases leaking ● Replace piston rings and
cylinder liner
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