Service Manual

Section 7. Lubrication
A pump driven by one of the balancer shafts pro-
vides pressure lubrication of the connecting rod
journal through drilled passages in the crankcase
and crankshaft. An oil hole in the crank arm pro-
vides spray lubrication of the piston, cylinder walls,
and other crankcase components. The lubrication
system includes an oil pressure relief valve and full-
flow oil filter (Specs
B and C). The oil pump is acces-
sible by removing a cover in the oil base.
WARNING Improper service or replacement of
parts can result in severe personal injury and/or
equipment damage. Service personnel must be
qualified to perform electrical and/or mechani-
cal service.
WARNING Accidental starting of the engine
can result in severe personal injury or death.
Disconnect the negative battery cable and
spark plug wires while servicing engine,
controls, or associated equipment.
OIL CHANGE
WARNING Crankcase pressure can blow out
hot oil, which can cause severe personal injury.
Do not check oil while the engine Is running.
WARNING Hot crankcase oil can cause burns
if
it comes in contact with skin. Wearprotective
clothing and keep fingers and hands clear when
draining oil.
WARNING Some States or federal agencies
have determined that used engine oil is carcino-
genic and causes reproductive toxicity. Take
care not to breathe, ingest or come Into contact
with used engine oil.
CAUTION Excess oil can cause high oil con-
sumption, high operating temperatures, and oil
foaming. Do not overfill crankcase.
Run the engine until it is thoroughly warm before
draining the oil. Stop the engine, place
a pan under
the drain plug and remove the plug (open the drain
cock). Replace the drain plug (close the cock) when
the oil has stopped draining. Refill with oil meeting
the API classification SG, SG/CD, or SG/CE and
having the proper viscosity for the ambient temper-
ature. See Table
7-1. Straight weight oil is recom-
mended for severe duty use and minimum oil con-
sumption at temperatures above
32" F (0" C).
TABLE 7-1. OIL VISCOSITY RECOMMENDATIONS
OIL FILTER CHANGE
WARNING Hot crankcase oil can cause burns
if it comes In contact with skin. Wearprotective
clothing and keep fingers and hands clear when
draining oil.
CAUTION Excess oil can cause high oil con-
sumption, high operating temperatures, and oil
foaming. Do not overfill crankcase.
Spin the oil filter element off and discard it. Clean
the filter mounting surface and make sure a gasket
is inserted in the new element. Apply a thin film of
new oil to the gasket. Spin the element down by
hand until the gasket just touches the mounting sur-
face. Then add another
1/2-3/4 turn. Do not over-
tighten. Fill with oil to the
FULL mark and start and
run the engine until it is warm. Check for oil leaks.
Check oil level.
7-1