9.
Remove the bevel gear case/axle case assembly
NOTE: Axle bearing shims are available in 0.008 in.
(0.20 mm), 0.012 in. (0.30 mm) and 0.020 in. (0.50 mm)
thickness.
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. 72).
11.
27
Tighten axle cover screws from 17 to 20 ft-lb (23 to
N−m).
12.Coat
a new O-ring with grease and install the bevel
LOWER BEVEL GEAR BACKLASH:
gear case/axle case assembly on the axle support.
Tighten mounting screws and nuts from 35 to 41 ft-lb (47
to 56 N−m) (Fig. 73).
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 (4 Wheel Drive Axle)
The following procedures assume the 4WD rear axle as-
sembly has been removed from the machine.
35
(47
to 41 ft−lb
to 56 N−m)
Removal
1
6
5
IMPORTANT: Do not interchange right and left dif-
ferential shafts assemblies. Mark right and left
shafts before disassembly.
4
2
1.
ers. Remove the bevel gear case/axle case assembly
and O-ring from the axle support (Fig. 73).
Remove the mounting screws, nuts and lock wash-
3
35
(47
to 41 ft−lb
to 56 N−m)
2.
Mark and pull the differential shaft assembly from the
axle support.
Figure 73
1.
2.
3.
4.
Cap screw
Lock nut
Lock washer
Axle support
5.
case assembly
6.
Bevel gear case/axle
3.
4.
Remove the retaining ring and bevel gear (Fig 74).
Drive the differential shaft out of the bearings. Re-
O-ring
move the bearings and bearing shims.
5.
Inspect all gears, shafts, bearings and cases for
damage and wear. Replace components as necessary.
Installation
6
1.
Press bearings onto differential shaft. Place correct
3
combination of bearing shims in axle support and drive
differential shaft and bearing assembly into axle sup-
port.
5
4
2
1
2.
3.
Install bevel gear and retaining ring.
Coat new O-ring with grease. Align differential shaft
splines with differential gear assembly and slide differ-
ential shaft assembly onto axle support.
Figure 74
4.
5.
6.
4.
Bevel Gear Case/Axle Case Assembly in this section of
this manual).
Install bevel gear case/axle case assembly (see
1.
2.
3.
Retaining ring
Bevel gear
Differential shaft
Bearing
Bearing shims
O-ring
Drive Axles
Page 8 − 40
Groundsmaster 3280−D/3320
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