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. 10).
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).
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-lb (23 to
27 N–m).
12.Coat a new O-ring with grease and install the bevel
gear case/axle case assembly on the axle support.
T
ighten mounting screws and nuts from 35 to 41 ft-lb (47
to 56 N–m) (Fig. 11).
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. 1
1).
2. Mark and pull the differential shaft assembly from the
axle support.
3. Remove the retaining ring and bevel gear (Fig 12).
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
dif
ferential shaft and bearing assembly into axle sup-
port.
2. Install bevel gear and retaining ring.
3. Coat new O-ring with grease. Align differential shaft
splines
with differential gear assembly and slide differ-
ential shaft assembly onto axle support.
4. Install bevel gear case/axle case assembly (see
Bevel Gear Case/Axle Case Assembly in this section of
this manual).
1
2
3
4
5
6
(47 to 56 N–m)
35 to 41 ft–lb
(47 to 56 N–m)
35 to 41 ft–lb
Figure 11
1. Cap screw 5. Bevel gear case/axle
2. Lock nut case assembly
3. Lock washer 6. O-ring
4. Axle support
1
2
3
4
5
6
Figure 12
1. Retaining ring 4. Bearing
2. Bevel gear 5. Bearing
shims
3. Differential shaft 6. O-ring
Groundsmaster 228–D Page 14.1 – 7 4WD Rear Axle
Rev. H
(Groundsmaster 228–D with Dae Dong axle)
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