Differential Gear Assembly (4 Wheel Drive Axle) - Toro Groundsmaster 3280-D Service Manual

Differential Gear Assembly (4 Wheel Drive Axle)

The following procedures assume the 4WD rear axle as-
sembly has been removed from the machine.
Removal
1. Remove bevel gear case/axle case assemblies (see
Bevel Gear Case/Axle Case Assembly in this section of
this manual).
IMPORTANT: Do not interchange right and left dif-
ferential shafts assemblies.
2. Mark the differential shaft assemblies for assembly
purposes. Pull the differential shaft assemblies from the
axle support.
3. Remove input shaft/pinion gear assembly, shims
and O-ring from the axle support (Fig. 82).
4. Remove the axle support case screws. Separate the
axle support halves and remove the O-ring.
5. Remove the differential gear assembly, bearings and
adjusting shims from the axle case.
6. Drive the spring pin from the differential case with a
punch and hammer. Discard the spring pin (Fig. 83).
NOTE: Mark and arrange all components so they can
be reassembled in their original position.
7. Remove the differential pinion shaft, pinion gears
and pinion washers. Remove the differential side gears
and side gear shims. Remove the ring gear only if it will
be replaced (Fig. 84).
NOTE: Replacement ring gears are only available in
matched ring and pinion sets.
Drive Axles
4
1. Pinion gear assembly
2. O-ring
3. Axle support (right)
4. Axle support (left)
1. Differential case
22 to 25 ft−lb
(30 to 34 N−m)
Threadlocking
Compound
1. Differential pinion shaft
2. Pinion gear
3. Pinion washer
4. Side gear
Page 8 − 44
35 to 41 ft−lb
5
7
(47 to 56 N−m)
6
2
3
Figure 82
5. Case screws
6. Differential gear assy.
7. O-ring
2
1
Figure 83
2. Spring pin
1
5
4
2
3
7
6
Figure 84
5. Side gear shims
6. Ring gear
7. Differential case
Groundsmaster 3280−D/3320
1
3
2
4
5