Hudson 63 1936, Mechanical Procedure Manual

Page: 115 / 333

If this condition is encountered the clutch should be flushed
with kerosene and relubricated with Hudsonite, which will, after
a few hundred miles of driving, clean the corks and give normal
clutch action.
The Hudsonite in the clutch should be drained and replaced
every 5,000 to 15,000 miles. To drain, turn the engine until one
of the plugs in the front of the flywheel is in the timing inspec-
tion opening at the left side of the rear engine support plate (Fig.
807). Remove the plug with special wrench (J-472).
Turn the engine slowly, approximately 1/3-revolution, until
the star on the flywheel is in line with the pointer on the timing
inspection hole. This brings the drain hole to the bottom and
permits all the Hudsonite to drain out.
Turn the engine until the drain hole is in the timing opening
and insert 1/3-pint of Hudsonite Clutch Compound, using J-485
gun.
Measuring cup J-486 is calibrated and should be used for mea-
suring the clutch compound.
The special equipment mentioned is part of the complete
Refill Set J-441 (Fig. 808), which includes wrenches and filler
equipment to handle clutch service on all Hudson and Terra-
plane clutches. This equipment can be purchased in the com-
plete set or as individual items.
Clutch Overhaul
After the transmission is removed from the car the 16
capscrews (10) around the clutch cover (8) are removed and the
clutch assembly removed from the car and taken to the bench.
The entire assembly should be washed thoroughly.
Inspection (Before Disassembly)
(1) Inspect the driving plate (1) to see that the corks are in good
condition. A black glaze indicates the use of an improper lubricant.
Hudsonite keeps the pores of the corks open and, if the corks are not
burned, soaking in Hudsonite and the use of Hudsonite in the
clutch after reassembly will clean up the cork surfaces. Clean
cork surfaces are necessary for smooth engagement and
"clean" disengagement.
The driving plate should run true and the springs and spring
cages should retain the hub in the disc without appreciable
rotary or sidewise lost motion.
The hub splines should be free of burrs to permit free
movement on the spline shaft.
(2) The pressure plate (2) should be free of scores of blued
spots. Blued spots indicate that the clutch has been operated at
an excessive temperature, and the engaging springs should be
replaced as they have undoubtedly lost their tension.
If blued spots are found, there is also a possibility of the
pressure plate being warped. It is necessary to remove the
pressure plate from the clutch assembly in order to test for
warpage.
Do not confuse gummed oil spots with blued spots. The
gummed oil may have a similar appearance but is readily
scraped off.
Disassembling the Clutch Assembly
Before .disassembling, look for the punch marks near the
outer edge of the pressure plate and a corresponding mark
near it on the turn of the cover flange. These marks indicate
the position of the parts when the assembly was balanced at
the factory and the unit should be reassembled with the marks
together to maintain the original balance.
If the marks are not readily visible, make them so with a
prick punch.
Place the clutch assembly in the clutch fixture (J-298-H) and
clamp tight with the hand wheel (Fig. 809). Remove the three
nuts (6) from the back of the cover and release the hand wheel.
The cover can then be removed, exposing the springs (7),
clutch fingers (3) and finger retainers (5).
SECTION 8
Page 6
HUDSON-TERRAPLANE
ISSUED MAY, 1937 Printed in U. S. A.
Figure 808-3-441 Clutch Drain and Refill Kit
Figure 809—Disassembling Clutch—J-298-H Clutch Fixture