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D
E
4
AILY
URO
5450
LUBRICATION
General
The engine is lubricated by forced circulation performed by the
following parts:
- a gear oil pump with built-in depressor (GPOD);
- a pressure relief valve integrated in the oil pump;
- a heat exchanger made up of five elements;
- A double filtration oil filter with built-in safety valve.
Operation (see Figure 283)
Engine oil is drawn up from the sump by the oil pump via
the suction strainer and delivered under pressure to the
heat exchanger where it is cooled.
The oil continues through the oil filter and goes to lubricate
the relevant parts through ducts or pipes.
At the end of the lubrication cycle, the oil returns to the
sump by gravity. The oil filter can be excluded by the safety
valve built into it if it gets clogged.
In addition, the lubricating oil feeds the chain hydraulic
tightening devices for the control of the auxiliary elements
and the timing system and the hydraulic tappet.
Print 603.93.651
271
F1C ENGINE
Figure 283
Oil under pressure
Oil in freefall
Coolant
A. Pressure regulating valve closed - B. Pressure regulating valve open - C. Oil pressure switch
Base - March 2006
107751
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