Engine Assembly (Rev 1/97)
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54. Pressure check the engine’s lubrication system, if possi-
ble. A pressure check can point out problem areas in
the lubrication system, and it eliminates the possibility
that any of the engine components are dry when the
engine is first started.
a.
Fill the tank with engine oil and attach the outlet
line to the engine at the fitting for an oil pressure
gauge or oil pressure switch.
b. Cap off any other open oil system fittings such as
the feed line for the bypass filter.
c.
Pressurize the tank to 60 psi (413 kPa) and open
the outlet line to the engine.
d. The tank will fill the oil filter first and will then
pressurize the whole lubrication system. The oil
pressure control valve may release some oil into
the bottom end.
e.
Check each main bearing and rod bearing. Oil
should drip from each bearing at a fairly good rate,
but there should be no large streams of oil from
any of the bearings.
f.
Check the idler gear shaft and the front camshaft
bearing. Oil should drip from each at a fairly good
rate, but there should be no large streams of oil
from either.
g. Check the rocker arm assembly. Oil should drip
from each rocker arm bushing and from the hole in
each rocker arm at a fairly good rate, but there
should be no large streams of oil from any of the
rocker arms or bushings.
h. Turn the engine over several times and check the
components again.
i.
Lack of oil or a low flow rate at any of these com-
ponents indicates there is a restriction in an oil gal-
lery or passage leading to the component.
Excessive oil flow at any of the components indi-
cates that the oil clearance is too large, the wrong
part has been used, or a component is damaged or
missing.
55. Install the valve cover with a new gasket and put new
O-rings on the special cap nuts.
56. Install the oil pan.
a.
One
Piece
Oil
Pan
(1) Check to make sure the dowel pin and O-ring
are in place in the bottom of the block.
(2) Install the oil intake pipe.
(3) Place a thin layer of sealant on the sealing sur-
face of the oil pan and place the oil pan in
position on the bottom of the block.
(4) Install the oil pan mounting bolts. Make sure
the rear end of the block and the oil pan are
flush before tightening the mounting bolts.
b.
Two
Piece
Oil
Pan
(1) Check to make sure the dowel pin and O-ring
are in place in the bottom of the block.
Check Dowel Pin and O-ring
(2) Place a thin layer of sealant on the top sealing
surface of the oil pan and place the oil pan in
position on the bottom of the block.
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