Flywheel - Hudson 1953 Jet Mechanical Procedure Manual

PRESSURE PLATE
The pressure plate must be true and free of
scoring or cracks to provide smooth clutch appli-
cation. Check for evidence of burning and over-
heating.
Place on a surface plate and check with feeler
gauges to detect distortion. The maximum distortion
should be no greater than .004" to .006".
Inspect the pressure plate lugs for wear at the
fulcrum contacts. If excessive wear is noted the
pressure plate must be replaced.
CLUTCH COVER
Care must be exercised during removal and
installation of the clutch assembly. The clutch
assembly is under spring tension and the six
mounting screws attaching the cover to the fly-
wheel must be loosened or tightened evenly to
prevent cover distortion. If severe damage or
distortion is noted replace the cover.
NOTE: The mounting screws are of a special
hardened steel and in no case should substitu-
tions be made.
FLYWHEEL AND PILOT BUSHING
After the clutch assembly has been removed
from the flywheel carefully inspect the surface of
the flywheel for any roughness. Check the tight-
ness of the flywheel stud nuts. Use a torque
wrench and tighten to 40-45 foot pounds torque.
Check the crankshaft pilot bushings for loose-
ness in the crankshaft bore and for scoring or
excessive wear. If the bushing is badly worn it can
be re moved by using a 11/16" - 16 tap. As the tap
is turned in, threads will be cut in the bushing.
After the tap has bottomed ins the crankshaft bore,
the bushing will be forced out.
Install the new bushing in the crankshaft using
tool J-5442.
ASSEMBLY OF CLUTCH
The release lever fulcrums must be lubricated
with a small amount of lubriplate grease before
assembly. Below are the assembly steps:
1. Mount the p r e s sure plate on the clutch
fixture, Figure 9.
2. Assemble the release lever pin in the
eyebolt and release lever.
3. Hold the eyebolt and release lever upper
ends as closely together as possible in one
hand; then enter the lower end of the e ye
bolt in the pressure plate bore and install
the fulcrum, Figure 10.
4. Use the same procedure for installing the
other two release lever assemblies.
5. Check to see that the anti-rattle springs are
in place in the cover. Figure 9.
6. Place the six p re s sure springs one on
each plate boss and install the cover over
the springs. Be certain the springs seat in
the cover recesses and the punch marks on
the pressure plate and cover are aligned.
7. Tighten the eyebolt nuts until they are
flush with the upper ends of the eyebolts.
8. Release the clutch assembly and remove
from the clutch fixture.
CLUTCH LEVER ADJUSTMENT
1. Place the clutch Finger Adjusting Gauge
J-4708, Figure 11 on a fly w he e 1 in the
same position as the driven disc.
2. Place the clutch assembly on the flywheel
and align the machined surfaces of the
gauge directly under the pressure plate
levers. Tighten the cover mounting s c re
w s uniformly a few turns at a time until
the cover is drawn down against the fly-
wheel.
3. Depress each lever several times before
checking the lever height to seat the levers
in their operating positions.
CLUTCH 78