Oil Pressure Too Low; Oil Deteriorates Quickly - Daewoo DE12T Manual

6.3.4. Diagnostics and troubleshooting
Complaints
1. Oil consumption
excessive

2. Oil pressure too low

3. Oil deteriorates quickly

MAINTENANCE OF MAJOR COMPONENTS
Possible causes
•
Poor oil
•
Oil seal or packing leaky
•
Pistons or piston rings worn
•
Cylinder liner worn
•
Piston rings sticking
•
Valve guide oil seals or valve
guides, or valve stem worn
•
Poor oil
•
Relief valve sticking
•
Restrictions in oil pump strainer
•
Oil pump gear worn
•
Oil pump feed pipe cracked
•
Oil pump defective
•
Oil pressure gauge defective
•
Various bearings worn
•
Restriction in oil filter
•
Gases leaking
•
Wrong oil used
- 160 -
Corrections
•
Use suggested oil
•
Replace
•
Replace pistons and/or
piston rings
•
Replace cylinder liner
•
Replace pistons and/or
piston rings
•
Replace
•
Use suggested oil
•
Replace
•
Clean strainer
•
Replace
•
Replace
•
Correct or replace
•
Correct or replace
•
Replace
•
Replace filter element
•
Replace piston rings and
cylinder liner
•
Use suggested oil