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Pressure System - Crankshaft and Pistons
Filtered oil is fed to the main gallery located in the upper crankcase. Here it is delivered
to the crankshaft main bearings and, through drillings in the crankshaft, to the big end
bearings. Spray jets located in the upper crankcase, under the barrels, lubricate the
pistons and connecting rod small ends. These jets are fed oil from the main gallery oil
feed.
Oil is fed to the alternator from the crankshaft through the drilling in the bolt securing
the alternator rotor to the crankshaft.
1. Main oil galler
2. Feed to crankshaft main bearings
3. Oil jets
4. Alternator rotor bolt
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