Hudson 63 1936, Mechanical Procedure Manual

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Testing Pressure Plate for Warpage
If a surface plate is not available for testing the pressure plate,
lay it face to face with a new plate and test by inserting a feeler
gauge between the plates.
If a .010" feeler gauge can be inserted at any point between
the plates there is sufficient warpage to warrant replacement of
the plate.
Engaging Springs
The engaging springs used in Hudson and Terra- plane
clutches are pre-set so that they will lose very little of their
original strength in use, unless they become excessively hot.
However, it is good practice to replace the engaging springs
after long usage unless some means is available for testing their
strength (Spring Tester U-15).
The engaging springs (Part No. 45149) in Hudsons have a
minimum weight of 120 pounds when compressed to a length
of 1-5/8" when new. If these springs, after being in service,
show less than 110 pounds when compressed to 1-5/8", they
should be replaced.
Terraplane inner engaging springs (Part No. 45154) have a
minimum weight of 75 pounds compressed to 1-5/8" when new
and should be replaced if found to weigh less than 60 pounds
compressed to 1
All 1934 and early 1935 Terraplane clutches were built with
three inner springs, while the later 1935 and also 1936 and 1937
production use six inner springs. It is recommended that six of
these springs (Part No. 45154) be used in rebuilding clutches,
particularly in sections of the country where unimproved roads
or heavy snows are encountered, or on cars known to be used
for abnormally hard service.
Always use genuine Hudson Terraplane clutch springs. They
are pre-set, tested for strength, squareness of ends and deflect
true to the center line. All these qualities are essential for satis-
factory clutch operation.
Throwout Fingers
The throwout fingers should be straight and not show appre-
ciable wear at the points where they rest against the retainer or
throwout bearing.
The retainer washers should be replaced with new ones if not
in good condition.
Since early 1935 production, both sides of the pressure plate
lugs through which the throwout finger pins pass have been
machined. These require the use of 47633 throwout finger pin
which is IN" long over all. The use of 40039 throwout finger
pin, which is 1-3/8" long over all, in these later clutches may
cause a rattle at idling speed. This longer pin must, however,
be used in all clutches prior to 1935 production and a few
early 1935 clutches.
Reassembling
Place the pressure plate (2) on the fixture (J-298-H) with the
friction face down. Put springs (7), throwout fingers (3), fin-
ger retainers (5) and retainer washers in place.
Put cover in place, being sure punch mark lines up with
mark on pressure plate for correct balance.
Put hand wheel in place and guide throwout finger retainers
into holes in cover as wheel is being run down on screw. Put
nuts (6) on three throwout finger retainers, drawing down
securely. Remove hand wheel and remove clutch assembly
from fixture.
Flywheel and Pilot Bearing
The flywheel face should be smooth and the hold-on nuts
should be drawn tight.
If the pilot bearing in the flywheel does not run smoothly,
or is not free, it should be replaced. The bearing can be re-
moved by using J-164 Clutch Pilot Bearing Remover.
This is an inertia type puller with a split shaft construction.
The end of the puller is passed through the inner race of the
bearing, and then expanded by a thumbscrew so that it hooks
behind the race.
Reinstalling Clutch Assembly
Shellac a new gasket (9) to the front face of the clutch cover
bolting flange. Pass the J-384 Clutch Aligning Arbor through
the hubs of the clutch cover and drive plate and entering it into
the pilot bearing (Fig. 810). Push the clutch assembly into
place against the flywheel and then secure with capscrews
with the aligning arbor still in place to keep the drive plate
centered to permit easy installation of the transmission.
MECHANICAL PROCEDURE MANUAL
SECTION 8
Page 7
Figure 810—Assembling Clutch to Flywheel—J-384 Clutch
Aligning Arbor