Deutz WP4C Series, Руководство по эксплуатации и обслуживанию

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Deutz WP6C/WP4C Series Marine Diesel Engine Use and Maintenance Manual
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5.7 Oil pressure is too low
S/N Cause Troubleshooting
1
The lubrication oil is in poor quality (the specific
phenomenon is the oil pressure drops gradually with
diesel engine running). Select proper lubrication oil
according
to relevant
specifications.
2
The diesel engine is overheated and the oil gets
thinner. Troubleshoot according to items
in Section 5.8 of this chapter.
3 The oil filter is clogged. Clean
4
There are loose pipe joints and oil leakage in the oil
line or there is air in the pipeline.
Check and tighten.
5 There is diesel fuel mixed in the oil. Change and find out the cause.
6
The spring for the pressure adjusting valve of the oil
pump gets fractured.
Replace
7
Oil pressure in the oil sump is too low or the oil pump
suction height is excessive. Add some oil or reinstall the oil
pump and oil tank.
8
The clearance between the connecting rod bearing and
the main bearing is too large.
Check and replace
5.8 Diesel engine is overheated
S/N Cause Troubleshooting
1 There is no sufficient coolant.
Troubleshoot according to items in Section 5.6 of
this chapter.
2
The water inlet temperature is too
high.
Reduce the water inlet temperature.
3 The oil pressure is too low.
Troubleshoot according to items in Section 5.7 of
this chapter
4 The diesel engine is overloaded. Reduce its load and find out the cause.
5 Fuel injection is too late. Check and adjust.
6
There is air leakage at the piston
ring.
Check and replace
7 The bearing fit is too tight. Check and properly grind.
8 The ambient temperature is too high.
Implement power correction and reduce the load
effect.