Engine Oiling System Operation

Engine utilizes a force-feed lubrication system. Oil moves from oil pan through strainer to oil pump and full-flow oil filter mounted outside of engine block assembly. Oil is pressure fed from filter to drilled galleries in block.

Lubricant moves under pressure to main bearings, which are drilled to pass oil on to connecting rod and camshaft bearings, upward in block to rocker arm shafts.

Excess or run-off oil drains back down into oil pan through drain holes in cylinder head. Cylinder walls and piston rings are lubricated by splash from connecting rods.

OIL PUMP SPECIFICATIONS

Dimension Application

In.(mm)

Backlash

⁽¹⁾ .007-.011 (.17-.27)

Bearing Clearance

Driving Shaft

.0006-.0021 (.015-.053)

Trailing Shaft

.0006-.0020 (.015-.051)

Tooth-to-Housing Clearance

⁽¹⁾ .0043-.0073 (.110-.185)

End Play

.0010-.0033 (.025-.084)

Relief Valve Spring Length, No Load

3.52 (89.5)

⁽¹⁾	Excluding bearing clearance.