Differential Assembly Service - Toro Greens Aerator Service Manual

Differential Assembly Service (Figs. 9 and 17)
1. Place differential assembly in a large vise with soft
jaws with the cap screw heads up. Do not clamp the vise
on the bearing race of the differential carrier or the seal
area of the axle.
2. Remove cap screws (item 17) and lock washers
(item 18) that secure the differential carriers together.
Lift upper axle and carrier from the assembly. If neces-
sary, tap lightly on the ring gear with a soft–faced ham-
mer to loosen it from carrier.
3. Remove the drive blocks (item 21), bevel pinion
gears (item 22) and drive pin (item 20) from the ring gear.
4. Lift ring gear (item 19) from lower axle and differential
carrier. If necessary, tap lightly on the ring gear with a
soft–faced hammer to loosen it from carrier.
5. Remove snap ring (item 38) from end of axles. Slide
differential components from axle using Figure 9 as a
guide.
6. Inspect differential components:
A. Replace bushings in differential carriers if the
bushings are worn in excess of .878" (22.3 mm).
B. Check internal splines of bevel gears and axles
for wear or damage.
C. Inspect drive blocks and drive pin for wear or
damage.
D. Replace differential components that are worn or
damaged.
7. Assemble the differential in the reverse order of dis -
assembly using Figure 9 as a guide. Lightly oil compo-
nents before installation into differential. Make sure that
thrust washers (item 16) and thrust races (item 76) are
placed on the correct sides of thrust bearings (item 68).
8. Secure the differential assembly with lock washers
and cap screws. Torque cap screws 84 in–lb (9.5 N–m).
9. After assembly, test differential action by holding the
upper axle vertically and spinning the differential. Next,
place the assembly on the bench and rotate both axles
in opposite directions. In both tests, the assembly
should rotate freely without binding. If any binding is
noted, check cap screw torque, gear meshing and bear-
ings. Little or no play should be evident between the
axles and carriers.
Drive Train
2
1
Bushing Reject
.878" (22.3 mm)
1. Axle
2. Needle bearing
3. Drive block
4. Drive pin
Page 7 – 14
4
5
6
3
8
Figure 17
5. Thrust washer
6. Bushing
7. Thrust bearing
8. Snap ring
Greens Aerator
7