Hudson 1955 Rambler, Техническое и сервисное руководство

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T E C H N I C A L S E R V I C E M A N U A L
FIGURE 13— Installation of Dial Indicator
for External Valve Timing Check
in either direction is evident, remove the
timing chain cover and inspect timing chain
installation. Replace timing chain if over
chain deflection exists.
TIMING CHAIN COVER
The timing chain cover is a die casting
incorporating an oil seal at the vibration
damper hub.
To remove the timing chain cover, first
remove the oil filter pressure line, water
pump and manifold, fuel pump assembly, and
vibration damper.
The oil seal can be pryed out of the cover
and a new one installed with seal installing
tool J-5983 (Fig. 14).
FIGURE 14— Installation of Timing Chain
Cover Seal
To prevent damage to this seal, it is
important that the cover be properly aligned
when installing the vibration damper. This
is accomplished by leaving the cover to block
screws loose until the vibration damper has
been partially installed. Then tighten the
cover screws.
An oil slinger is used inside the timing
chain cover. The slinger is held in place by
the crankshaft sprocket, and the vibration
damper hub.
CAMSHAFT AND BEARINGS
The camshaft is supported by five steel
shelled, babbitt lined bearings which have
been pressed into the block and line reamed.
The camshaft bearings are step bored, being
larger at the front bearing than at the rear,
to permit easy removal and installation of
the camshaft. All camshaft bearings are
lubricated under pressure.
The oil for lubrication is supplied through
connecting drilled passages from the inter-
mediate main bearing locations and from the
main oil galleries to the front and rear
camshaft bearing locations.
Camshaft End Play
The camshaft end thrust is controlled by the
front surface of the camshaft bearing and the
rear surface of the thrust plate, and the
rear hub surface of the camshaft sprocket and
the front surface of the thrust plate.
The end play tolerance is .004" to .006".
Camshaft Removal
Remove cylinder head covers, ignition plug
wires, rocker arm assemblies, intake mani-
fold, and carburetor. Remove water pump and
water distribution manifold. Remove upper
oil breather and tappet assembly cover.
Remove inner oil baffle cover. Remove push
rods, keeping them in their relative opera-
tional positions. Remove hydraulic tappets
and keep in relative operational positions.
Remove fuel pump, vibration damper, and
timing chain cover. Crank engine until timing
marks line up on a vertical line with shaft
centers (Fig. 12).
Remove oil shedder, fuel pump eccentric,
crankshaft sprocket, camshaft sprocket, and
timing chain assembly (Figs. 15 and 16).
Timing sprockets can be pryed off with ease.
Remove the camshaft retainer and thrust plate
and the end thrust spacer (Figs. 17 and 18).
PISTONS
Slipper type, tapered skirt, cam ground,
pistons are used. They are of aluminum alloy,
steel reinforced for controlled expansion.