(3) Position idler gear bearings with
spacer between them in idler gear.
(4) Apply a light coat of engine oil to idler
gear shaft. Position idler gear with bearings on
idler shaft making certain the timing marks on the
idler gear and the crankshaft gear are lined up prop-
erly when number 1 piston is at top dead center, as
illustrated in figure 14-25.
(5) Install capscrew with washer and
tighten cap screw to a torque of 95 to 105 foot-pounds.
The allowable end play of the idler
gear bearing is a minimum of
Fuel Pump Drive Gear Installation.
(1) Coat fuel pump drive shaft with engine
oil and install shaft in pump mounting adapter. In-
stall woodruff key.
(2) Position drive gear on drive shaft with the
keyway lined up with the woodruff key. Install
lockwasher and nut on drive shaft and tighten nut to a
torque of 35 to 40 foot-pounds.
During the assembly of the engine or
replacement of any of the timing gears
it is necessary to align the timing
marks as shown in (fig. 14-25, view B).
After aligning the marks, rotate the
flywheel counter-clockwise (view from
timing gear end) until the proper de-
gree timing mark (for the specified
rpm) on the pulley and damper
assembly is registered with the
pointer on the front of the timing
gear cover. The engine is now prop-
erly positioned for the installation of
the fuel pump.
Check backlash between all gears.
Backlash between any two mating
gears must not exceed 0.015 inch.
New parts must be installed if
backlash exceeds this requirement,
Refer to para 14-74 for replacement
O i l S e a l .
(1) Clean the timing cover bore to receive
a new seal.
The outer diameter of the front oil
seal has a layer of red-colored seal-
ant which forms a seal between the
outer diameter of the seal and the
bore in the cover. The bore of the
seal has a layer of rubber compound
to prevent oil leakage between the
seal and the crankshaft.
(2) Place timing cover on a flat surface
with the front side to the top.
(3) Position seal in timing cover with open
side of seal facing down and positioned squarely in
bore of cover.
Make certain that seal is not
cocked in timing cover bore.
(4) Drive or press seal into timing cover
bore until it bottoms.
Do not press on open face of seal
or damage will occur.
(5) After seal is installed in the cover, in-
sert fingers into inner part of seal and check for
rotation. If seal was installed properly, the inner
part will turn with a firm feel to the fingers.
(1) Inspect and remove burrs from keyway
in crankshaft, using a fine-cut mill file or stone, to
prevent damaging the inner layer of rubber of the
crankshaft oil seal.
(2) Coat crankshaft lightly with engine
(3) Cement (permatex or equivalent) a new
gasket to the timing gear cover.
(4) Using a direct reversal of the removal
procedure, position the gear cover on the two dowel
pins in the cylinder block and complete the installa-
tion of the cover and the component parts. Tighten
all capscrews, securing the cover to a torque of
Also tighten the six cap screws
securing oil pan to timing gear cover to a torque of
Crankshaft Pulley Installation. Install
crankshaft puIIey and vlbration dampener assembly.
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