020193Y Oil pressure gauge
020434Y Oil pressure control fitting
AHEAD go to 3
3 - Check the system pressure with cold engine and medium - high speed.
Standard pressure < 6 bar
YES go to 4 NO go to 5
4 - Replace the damaged components.
5 - Check the adjustment by-pass efficiency (see "Flywheel cover" chapter) and restore the proper
sliding.
N.B.
STANDARD PRESSURES ARE OBTAINED USING OIL WITH THE PRESCRIBED VISCOSITY. A
HIGHER VISCOSITY CAUSES AN INCREASE OF THE SYSTEM PRESSURE.
1 - If oil consumption is higher than 250 g/1000 km on run-in engine, proceed as follows.
AHEAD go to 2
2 - Check the presence of oil at the recovery duct on the filter box.
YES go to 3 NO go to 4
3 - Check the unidirectional reed valve and the decantation chamber drainage hole.
YES go to 5 NO go to 4
4 - Check the thermal unit seals (piston rings, valve guides and oil guards), see "Thermal unit and timing
system" chapter.
5 - Restore the valve or the drainage hole efficiency.
Oil pump
Removal
- Remove the closing plate of the oil pump housing
by loosening the 2 retaining screws with their
washers.
Fuoco 500 i.e. Engine
ENG - 99
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