Suzuki WagonR+ RB310 Service Manual page 1865

ENGINE LUBRICATION
The oil pump is of a trochoid type, and mounted on
crankshaft at crankshaft pulley side.
Oil is drawn up through oil pump strainer and passed
through pump to oil filter.
The filtered oil flows into two paths in cylinder block.
In one path, oil reaches crankshaft journal bearings.
Oil from crankshaft journal bearings is supplied to
connecting rod bearings by means of intersecting
passages drilled in crankshaft, and then injected from
a small hole provided on big end of connecting rod to
lubricate piston, rings, and cylinder wall.
In another path, oil goes up to cylinder head and lubri-
cates camshaft journals, and hydraulic valve lash ad-
justers, etc., passing through oil gallery in cylinder
head wall.
There is a check valve in the path from cylinder block
to cylinder head. It serves to keep oil gallery in cylin-
der head filled with oil even when engine is at a stop.
An oil relief valve is provided on oil pump. This valve
starts relieving oil pressure when the pressure comes
2
over about 3.0 kg/cm (42.7 psi, 300 kPa). Relieved
oil drains back to oil pan.
ENGINE MECHANICAL 6A-3