Failure analysis and solution for Diesel engine oil pressure is low

Failure analysis and solution for Diesel engine oil pressure is low

Failure Analysis:

A.. Oil level is low in oil sump.

B. The oil pressure regulator spring fracture;

C. Oil filter rubber mat aging oil leakage

D. Oil pressure meter broken

E. The oil filter in oil sump clogging.

Troubleshooting

A. Keep the oil sump oil in static full scale, timely to add oil

B. Replace oil pressure regulator spring

C. Replace rubber mat

D. Replace oil pressure meter

E. Remove the oil pan and clean the oil filter

Maintenance experience

Oil pressure adjustment method: unscrew the oil seal nut of the regulator, loosen the lock nut, turn the adjusting bolt with flat mouth screwdriver, precession bolt, pressure increase. On the other hand, the pressure is reduced, adjustment at the prescribed scope then tighten nut and seal nut

Failure analysis and solution for Diesel engine oil pressure is low1

Diesel engine is running, the oil temperature rise to more than 90 degrees, blue smoke coming from exhaust.

Failure Analysis

Connecting rod bolt looseness is a symptom of a burning bush.

Troubleshooting

Check whether the connecting rod bolt is loose, remove the connecting rod bearing shell, intuitive connecting rod bearing shell surface whether there were signs of burning, if burnt, replace the bearing bush, use a torque wrench tight connecting rod bolt according to the specifications of torque value.

Maintenance experience

The above situation should be emergency stop. Find out the cause of the problem and to prevent major accidents (e.g., speed).On a normal operation of diesel engine, engine oil temperature is between 70-90 degrees.

 

 


Post time: May-31-2021