b. Inspect all bearings for burrs, nicks, binding or
b. Inspect pistons (17 and 45) and valve ball (15) for
nicks, burrs and excessive wear.
c. Inspect all bushings for out-of-round or excessive
c. Inspect springs (4, 14, 29, 37, and 52) for breaks or
d. Inspect springs (34 and 47) for breaks or distortion.
d. Inspect all oil passages for obstructions.
e. Inspect brake linings (35) for excessive wear.
e. Inspect shell (64) for dents.
f. Inspect brake drum (18) for deep scores or excessive
4-186. CHECKOUT. Start engine and apply and release
brakes to verify proper and prompt operation. Apply
brakes and verify no leakage from vacuum booster.
4-195. CHECKOUT. Test operate the hub assembly
while installed in tractor.
4-187. ADJUSTMENT. None required
4-196. PIVOT BEARING ADJUSTMENT. Adjust the
4-188. BRAKE ADJUSTMENT. Adjust the wheel brakes
axle assembly pivot bearings as follows: (See figure
a. Jack up each tractor wheel to be adjusted.
a. Jack up the wheel to be adjusted.
b. Adjust cam nut until slight drag can be felt while
Centerline of pivot bearings should be kept as
c. Turn cam nut back until no drag can be felt while
close to perpendicular as possible to eliminate
the off-center weight effect of the wheel.
4-189. AXLE DIFFERENTIAL.
b. Remove the rim and wheel cover (1) from hub (25)
and remove the axle shaft (2). Disconnect the tie rod.
4-190. INSPECTION. See figure 4-45 and inspect the
axle differential as follows:
c. Drive wedge (77) with drift pin until a light drag
can be felt when turning hub (22) as in steering action
a. Inspect all bearings for nicks, burrs, binding or
and no play can be felt when holding the top and bottom
of hub (22) and alternately pushing and pulling in
opposite directions with each hand.
b. Inspect all gears for cracked, broken or excessively
d. Attach a spring scale to steering arm (66) and
simulate steering action in both directions by pulling on
c. Inspect gear (35), shaft (20) and yoke (4) for bent,
scale. Lock wedge (77) by tightening screw (73). Scale
broken or worn spline teeth.
reading should not exceed 14 pounds of even pull.
d. Inspect seal (5) for deterioration or excessive wear.
4-197. FRAME AND BRACKETS ASSEMBLY.
4-191. CHECKOUT. Test operate the axle differential
4-198. INSPECTION. See figure 4-49 and inspect the
while installed in tractor.
frame and brackets as follows:
4-192. ADJUSTMENT. Adjustment of axle differential
a. Inspect spring assembly for cracked or damaged leaf
is accomplished during reassembly.
springs (63 through 73), bushings (62) and rollers (54).
4-193. HUB ASSEMBLY.
b. Inspect frame rails and all brackets, bushings and
braces for cracks, breaks or distortion.
the hub assembly as follows:
c. Inspect entire assembly for loose or missing
a. Inspect axle shaft for cracked or twisted spline.