Differential Shafts - Toro Groundsmaster 300 Series Service Manual

9. Remove the bevel gear case/axle case assembly
from the axle support. Coat a new O-ring with grease
and temporarily install the axle cover assembly. Position
a dial indicator at the tooths center. Prevent the axle
from turning and measure the lower bevel gear to axle
gear backlash (Fig. 12).
LOWER BEVEL GEAR BACKLASH:
0.004 to 0.016 in. (0.10 to 0.40 mm)
10.Adjust backlash by increasing or reducing axle bear-
ing shim thickness (see Axle Shafts in this section of this
manual).

Differential Shafts

The following procedures assume the rear axle assem-
bly has been removed from the machine.
Removal
IMPORTANT: Do not interchange right and left dif-
ferential shafts assemblies.
1. Remove the mounting screws, nuts, and lock wash-
ers. Remove the bevel gear case/axle case assembly
and O-ring from the axle support (Fig. 13).
2. Mark and pull the differential shaft assembly from the
axle support.
3. Remove the retaining ring and bevel gear (Fig 14).
4. Drive the differential shaft out of the bearings. Re-
move the bearings and bearing shims.
5. Inspect all gears, shafts, bearings, and cases for
damage and wear. Replace components as necessary.
Installation
1. Press bearings onto differential shaft. Place correct
combination of bearing shims in axle support and drive
differential shaft and bearing assembly into axle sup-
port.
2. Install bevel gear and retaining ring.
3. Align differential shaft splines with differential gear
assembly and slide differential shaft assembly onto axle
support.
4. Coat new O-ring with grease. Install bevel gear case/
axle case assembly (see Bevel Gear Case/Axle Case
Assembly in this section of this manual).
4WD Rear Axle (Rev. G)
(Dae Dong Axle)
NOTE: Axle bearing shims are available in 0.008 in.
(0.2 mm), 0.012 in. (0.3 mm), and 0.020 in. (0.5 mm)
thickness.
11. Tighten axle cover screws from 17 to 20 ft-lbs. (23 to
27 Nm).
12.Coat a new O-ring with grease and install the bevel
gear case/axle case assembly on the axle support.
Tighten mounting screws and nuts from 35 to 41 ft-lbs.
(47 to 56 Nm) (Fig. 13).
4
2
35 to 41 ft–lbs.
(47 to 56 Nm)
1. Cap screw
2. Lock nut
3. Lock washer
4. Axle support
1. Retaining ring
2. Bevel gear
3. Differential shaft
Page 10.1 – 10
35 to 41 ft–lbs.
(47 to 56 Nm)
1
6
3
Figure 13
5. Bevel gear case/axle
case assembly
6. O-ring
3
5
Figure 14
4. Bearing
5. Bearing shims
Groundsmaster 328–D
5
4
2
1