52
16.
Reassemble the differential mechanism. Use new needle thrust bearings if any other part have been
replaced. Assemble on two opposite spider arms in this sequence: spider gear, shifting train pinion,
needle thrust bearing, needle thrust race, shims, spider thrust washer. On the two remaining spider
arms, assemble in this sequence, spider gear and thrust spacer. Install in bronze gear.
17.
Using a differential gear, check shimming of spider gears. Adjust shims so that gear sits solid on all
four spider gears.
18.
Install shims, differential gear, shifting gear and clutch housing on worm gear. Use new drilled bolts;
clean bolts and apply a stud locking preparation to the bolt threads. Torque bolts to 17-20 ft. lbs.
19.
Check end play of shifting gear - .0-.010 maximum. If necessary, remove clutch housing and adjust
shims accordingly. Reinstall clutch housing and bolts. Torque to 20 ft. lbs.
20.
Insert wire through one bolt head, cross and insert through another, then twist ends securely. Trim
twist to 1/t inch length. Repeat, securing other bolts.
21.
Turn differential assembly over and remove bolts. Replace with new bolts as in steps 18 & 20.
22.
Using wire cutters, remove wire securing bolts on each side of worm gear. Secure differential
assembly upright in vise.
23.
Remove bolts securing clutch housing to worm gear. Remove clutch housing, gears, and shims. 24.
Turn worm gear over and remove pinned housing and gears.
24.
Tilt differential mechanism and remove from worm gear. The mechanism does not ride on the inside
surface of the gear.
25.
Disassemble the differential mechanism---carefully check the bore of the gears and the spider arms for
scoring, check the backs of the shifting train pinions.
26.
Reassemble the differential mechanism using new thrust needle bearings if any other parts were
replaced. On the two spider arms with snap ring grooves at the end, assemble in this sequence: spider
gear, shifting train pinion, bearing, spacer and snap ring. On the other two arms assemble in this
sequence: spider gear, race, bearing, spacer and snap ring.
27.
Tilt the differential mechanism and install it in the worm gear.
28.
Install the pinned gear and differential gear on the pinned housing and install it on the worm gear. Use
new drilled bolts; clean bolts and apply a stud locking preparation to the bolt threads. Torque bolts to
17-20 ft. lbs.
29.
Turn worm gear over and install the clutch housing, with differential gear, shifting gear and shims on
the worm gear. Torque bolts to 20 ft. lbs. Replace with new bolts as in step 29.
30.
Check end play of shifting gear .00-.010 maximum. Remove clutch housing and adjust shims as
necessary. Torque bolts to 20 ft. lbs.
31.
Insert wire through one bolt head, cross and insert through other, then twist ends together securely.
Trim twist to 12 inch length. Repeat, securing other bolts on other side of gear.
32.
Install differential on L.H. axle in L.H. axle housing. (Pinned housing side of differential assembly in
axle housing.)
33.
Be sure thrust pin is in place in the differential assembly so it will be between the axles.
34.
Place equal amount of shims and a shellacked gasket on each axle housing. Install L.H. axle housing
and differential assembly in tractor. Secure axle housing to tractor.
35.
Install R.H. axle housing on tractor, being sure the shifting clutch fits on the shifting gear. Secure axle
housing to tractor. Torque bolts to 45 ft. lbs.
36.
Remove the engine and high-low planetary or the advance casting and the forward-reverse planetary.
37.
Using a screwdriver or similar tool, check the differential assembly for play. Running clearance should
be .008-.012. Adjust by adding or removing an equal amount of shims from each axle housing.
38.
Adjust axles for .008-.012 end play. Add or remove shims behind the bearing cap.
