Mitsubishi S12R - Engine Oil Pressure Drop

11 TROUBLESHOOTING
Mitsubishi Diesel Engine S12R OPERATION & MAINTENANCE MANUAL
190
Pub. No. 291Y1-40720 Revision: 5
Engine Oil Pressure Drop
Table 11-11 Engine Oil Pressure Drop
Problem Cause Remedies Reference
Page
Engine Oil Pres-
sure Drop
Lubrication
System
Low engine oil level • Engine Oil Level - Check
• Check lubrication system.
149
Faulty engine oil
property (viscosity)
• Analyze engine oil properties -
• Change with the engine oil of
proper viscosity.
198
Excessive engine
oil temperature
• Cooling System - Check -
• Contact your MHIET dealer. 10
Clogged oil filter • Check and replace oil filter and
bypass oil filter
151
153
Oil pump malfunc-
tion
• Contact your MHIET dealer. 10
Relief valve mal-
function
• Contact your MHIET dealer. 10
Control System Oil pressure gauge
malfunction
• Check control system and wiring. -
• Contact your MHIET dealer. 10
Excessive load • Check fuel injection pump rack
stroke.
-
• Contact your MHIET dealer. 10
Engine Body Increased wear of
sliding parts
• Contact your MHIET dealer. 10
Increased clear-
ance of sliding
parts