Doosan DP180LBF - Failure Diagnosis

7. Lubrication system
120
Failure Diagnosis
Phenomenon Causes Troubleshooting
Too much oil consumption
Bad oil Replace oil with specified oil.
Oil leakage from the oil seal ring and packing part Replace it
Worn or damaged piston and piston ring Replace it
Worn cylinder liner Replace it
Burnt piston ring Replace it
Worn valve guide oil seal, valve guide, or valve stem Replace it
Low oil pressure
Bad oil Replace oil with specified oil.
Burnt oil pump relief valve Replace it
Clogged oil pump strainer Cleanse the strainer
Worn oil pump gear Replace it
Cracked oil delivery pipe of the oil pump Replace it
Defect oil pump Repair or replace it
Oil pressure gauge fault Repair or replace it
Worn bearings Replace it
Contaminated oil
Clogged oil filter Replace the oil filter with a new one
Gas leakage Replace piston ring with a new one
Bad oil Replace oil with specified oil.