2-5E
8
7
1
2
3
4
4
5
6
9
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Oil circuit 660 SMC (model 2003)
The oil pump 1 pumps the engine oil past the by-pass valve 2 through the oil filter 3. After the oil filter, an oil lead branches
off to a jet
4 which sprays engine oil onto the piston pin bearing and piston head. The second oil lead takes the main flow of oil
to the second jet
4 and the microfilter 5, which filters out even the finest impurities. The cleaned engine oil is pumped through
the oil lead and the clutch cover into the crankshaft to the connecting rod bearing
6 and drips into the crankcase. An additional
oil pump 7 sucks the engine oil out of the crankcase and pumps it through the oil line 8 to the gear wheels of the 4th and 5th
gear. Via the gear wheels, the engine oil reaches the oil sump. The timing chain
9 runs through the oil sump and transports the
engine oil upwards to the cylinder head. Through the bore
bk the oil reaches the camshaft bl and the valves.
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