Clutch Removal; Clutch Inspection; Clutch Assembly - Allis-Chalmers Model G Service Manual

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journal. This hole lines up with the two notches
cut in the camshaft thrust plate allowing two
spurts of oil from each revolution to reach the
thrust plate, the timing gear and'the.governor
mechanism.'· Oil fr·om the front main bearing is
fed through the -drilled crankshaft to No. 1 con-
necting rod jo_urnal and from No. lthrough
another drilled passage to No.2 connecting
rod journal. Oil from the rear main bearing
is fed to No.4 connecting rod through a drilled
passage and through a second drilled passage
from No.4 to No.3 connecting rod.
Each connecting rod has a small squirt hole on
the upper camshaft side of the large end which
is used to increase the spray on the inside of
the crankcase.
CLUTCH
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Removal
Separate the engine from the clutch housing and
remove the six capscrews attaching the clutch
to the flywheel. Remove these capscrews
evenly so that the spring tension will not distort
the back plate as it is loosened from the fly-
wheel.
Compress the pressure plates against the back
plate by the use of three
"c"
clamps or by use
of a press. Remove the pins from the release
levers and release
"c"
clamps or press.
Inspection
The clutch springs are 1-9/16" long and should
be replaced if less than 1-1/2" long. It is
preferable to replace clutch springs in full sets.
Check the clutch lining for wear. It should be
replaced if the lining thickness a.pproaches the
rivet heads. Check the lining and the hub for
loose rivets. Check the hub for worn splines.
Check the face of the flywheel and the face of the
pressure plate for flatness. These parts should
no.t be warped.
Check the release lever for wear at the hinge
pins and wear at the throwout bearing contact
surface. Also check the adjusting screw and
pivot or fulcrum points for wear.
Assembly
Assemble the plate to the flywheel with the long
hub of the plate away from the flywheel. Use
a pilot to hold the plate in alignment as the
pressure plate assembly is attached to the fly-
wheel. Lubricate the clutch shaft pilot bearing
in the flywheel with chassis lubricant.
\
Adjust the clutch release levers until they are
exactly 1-25/32" from the face of the flywheel,
or 11/16" from the release lever contact sur-
face to the back plate.
The throwout bearing should have 1/16" clear-
ance between the bearing and the clutch release
fingers. This measurement cannot be made when
the tractor is assembled. This measurement
can be related to clutch pedal travel, however,
and is correct when the pedal has I" of free
travel. The clutch adjustment is made at the
end of throwout fork by turning the nut on the
end of the pedal rod. The pedal return spring
is placed between the axle housing and the throw-
out fork.
IT
a new clutch pedal is installed the
upper stop should be filed until the pedal is
approximately 4" below the seat attaching pad.
G-25