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Technical description
Lubrication system
The engine has a pressurized lubrication system with piston cooling. The oil pump is located at the front end of the oil
sump and driven via a gear from the engine’s timing gears.
The lubricating oil is continuously filtered through two full-flow oil filters and one partial flow filter.
The injection pump camshaft housing and regulator housing are connectied to the engine’s pressurized lubrication
system and are lubricated directly, as is the turbocharger.
Lubrication system, diagram
A. Relief valve (opens when pressure is too high)
B. By-pass valve (by-passes oil past the oil cooler, if the
engine is cold)
C. Reducing valve (limits oil pressure)
D. Relief valve (opens if resistance in the filter is too
great)
E. Piston cooling valve (releases oil to the piston cooling
at RPM greater than idle)
1. Oil pump
2. Full-flow filters, 2
3. Partial flow filter, 1
4. Oil cooler
Oil valves
The oil valve in the lubrication system are used to con-
trol the oil pressure and volume of oil flow from the oil
pump to the different galleries, to the injector pump
camshaft housing, to the turbocharger and to the piston
cooling. To obtain the most effective system the valves
have different opening pressures. Relief valve (D)
opens if resistance in the filter is too great. The oil sup-
ply to the lubrication points is thus assured even if the
filters are clogged, but of course the oil is not filtered.
CE
D
6162
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