Hudson 1955 Rambler, Technical & Service Manual

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E N G I N E 6 C Y L I N D E R
15
FIGURE 37— Measure the Width of the
Plastigage Scale
Reduce torque 15 per cent if threads are
oily
The notches on the lower and upper rod
caps should be to the same side of engine
with the squirt hole on upper cap to camshaft
side of engine on the "Hornet" and "Wasp"
Series.
The cylinder numbers are to the camshaft
side of the engine and the identification
mark (Fig. 33) to the front of engine on the
"Rambler" Series.
Connecting rod side clearance:
"Hornet" and "Wasp" .007" — .013"
"Rambler" .005" — .015"
CRANKSHAFT
"Hornet" and "Wasp" Series
The crankshaft is supported by four main
bearings with the end thrust taken at the No.
3 bearing position.
The crankshaft, flywheel, and vibration
damper are balanced as individual units.
Complete engine assemblies are then balanced
with all reciprocating parts in motion.
Replacement of vibration damper or flywheel
can be accomplished without rebalancing the
complete assembly.
"Rambler" Series
The crankshaft is supported by four main
bearings with the end thrust taken at the
front main bearing location.
The component parts of the crankshaft
assembly are individually balanced; then
rebalanced as an assembly.
Replacement of vibration damper or fly-
wheel can be accomplished without rebalancing
the complete assembly.
Crankshaft. Main Bearings
Main bearings are of the precision type
having a steel back with a babbitt lining.
The bearings are not adjustable. Shims should
never be used and the bearing
caps should never be filed.
When either half of a bearing requires
replacement, a complete set should be in-
stalled. To replace the upper half of a
bearing, remove the bearing cap of the
bearing to be replaced. Then loosen all of
the other bearing caps and insert a small pin
in the crankshaft oil hole. The head of the
pin should be large enough so that it will
not fall into the oil hole, yet thinner than
the thickness of the bearing (Fig. 38).
FIGURE 38— Removing Main Bearing Insert
With the pin in place, rotate the shaft so
that the upper half of the bearing will
rotate in the direction of the locating
tongue on the bearing.
Tool J-2955 will greatly facilitate front and
rear bearing cap removal on the "Hornet" and
"Wasp" Series (Fig. 39).
CAUTION: Care must be exercised on
removal of the front main bearing cap
because if the front engine end plate
gasket is damaged, a replacement re-
quires the removal and replacement of
timing assembly and front engine end
plate.
FIGURE 39— Removing Front Min Bearing
Cap with Tool J-2955 "Hornet" and
"Wasp" Series