Engine Lubrication System: For J20 Engine 1E-11
For J20 Engine
General Description
Engine Lubrication Description
S5JB0A1521001
The oil pump is trochoid type, and mounted under the crankshaft. Oil is drawn up through the oil pump strainer and
passed through the pump to the oil filter.
The filtered oil flows into two paths in cylinder block.
In one path, oil reaches the crankshaft journal bearings. Oil from the crankshaft journal bearings is supplied to the
connecting rod bearings by means of intersecting passages drilled in the crankshaft.
In the other path oil goes up to the cylinder head and lubricates valves and camshafts, etc., after passing through the
internal oilway of camshafts.
An oil relief valve is provided on the oil pump. This valve starts relieving oil pressure when the pressure exceeds
specified pressure.
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