Weifang 495 - Lubricating Oil Pump Diagram

the oii is fedtp the oil filter and then enters into the main oil pas-
sage after being filtered while another portion of t~e oil enter~ into
the centrif'ugal bypass oil filter and flows ba~k to the oil sumpaf-
ter being filtered. The oil in the main oil passage of the cylinder
block is. fed to· the· main bearings, connecting rod bearings,
camshaft b4s.hings and. the idling gear shaft, The oil passing
through the first camshaft bushing flows through the oil passage
in cylinder block and cylinder head to lubricate the valve mecha-
nism. The piston, pisto,o pin, cylinder liner and timing gears are all
tf
splash-lubricated by the oil spilled from the bearings.
1). Construction of Main Components in Lubricating System
Cl)Lubricating oil pump
The lubricating oil pump IS of inner and outer rotor type as
shown in Fig. 26.
Fig .. 26 Lubricating, oil Pump
1-. Pressure regulatin'g valve spring; 2- Steel ball; 3- Intermediate gear;
4-Gear washer;5-Intern1ediate gear shaft;6-0il pump cQver;7-Inner rotor;
a-Oil pump shaft;9-0il.pu.mp gear;10--0uter rotor; II-Oil pump body.
. The lubricting oil pump is driven by the crankshaft timing
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