Fiat 1996 Brava Service Manual page 249

Bravo-Brava Engine
Lubrication
10.
DIAGRAM SHOWING ENGINE LUBRICATION SYSTEM
SUPPLY C I R C U I T
RETURN C I R C U I T
Operation
The engine lubrication system is pressurized
through a geared pump incorporated in the
crankcase front cover and operated directly by the
crankshaft.
A relief valve controls the system pressure.
During the intake, the oil is filterd through a gauze
filter and later by a replaceable cartridge on the sup­
ply line.
A thermostatic valve fitted on the oil filter mounting
has the f o l l o w i n g function:
- at a temperature of < 75°C, the oil passes directly
into the oil filter cartridge and then to the engine;
- at a temperature of > 90°C, the thermostatic
valve is open and allows the oil to pass into the
cooling radiator to lower the temperature and e n ­
sure better lubrication.
A main longitudinal duct in the cylinder block-
/crankcase allows the lubrication of the crankshaft,
the pistons and the connecting rods.
A duct allows the lubrication of the cylinder head
and all the engine timing system components.
T w o special pipes allow the lubrication of the tur-
bocharger.
1. Oil pump
2. Oil pressure relief valve
3. Float w i t h gauze filter
4. Oil filter cartridge
5. Engine oil cooling radiator
6. Thermostatic valve
7. Main longitudinal duct
8. Supply duct to the camshaft
9. Supply pipe to the turbocharger
10. Oil return pipe to the sump from the tur­
bocharger
11. Oil supply pipe from the thermostatic
valve to the radiator
12. Oil return pipe from the radiator to the
thermostatic valve
13. Oil return to the sump
14. Engine oil pressure warning light switch
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