Toro Groundsmaster 3280-D Service Manual page 389

Removing the Rear Axle (4-Wheel Drive)
Installing the Rear Axle (4-Wheel Drive)
Groundsmaster ® 3280-D/3320
05138SL Rev B
Note: For repair information regarding the rear axle on 2-wheel drive machines;
refer to Chapter 7: Chassis (page
1. Park the machine on a level surface, lower the cutting deck, shut off the
engine, set the parking brake, and remove the key from the key switch.
2. Drain the hydraulic fluid from the rear axle; refer to the Traction Unit
Operator's Manual.
3. Remove the 2 rear wheels from the rear axle; refer to
(page 7–4).
4. Remove the 6 socket-head screws (item 9 in
that secure the driveshaft assembly to the bi-directional clutch on the rear
axle. Position the end of the driveshaft away from the clutch.
5. Remove the steering cylinder from the rear axle; refer to
Steering Cylinder (4-Wheel Drive) (page
6. If the machine has rear weight(s) attached to the frame, remove the weight(s).
7. Support the rear axle to prevent it from falling. Remove the 4 flange-head
screws (item 20 in
machine frame. Lower the rear axle and rear axle support from the machine.
8. Remove the jam nut (item 18 in
axle pin that secures the rear axle to the rear axle support. Remove the
washer-head screw that secures the flange of the axle pin to the rear axle
support.
9. Remove the axle pin. Separate the rear axle support from the rear axle. Note
the location of the thrust washers on both ends of the axle mounting boss.
1. Position the rear axle support to the axle. Install the thrust washers (items
31 and 32 in Figure
minimize clearance.
2. Install the axle pin (item 22 in
support. Install the thrust washer and jam nut onto the pivot pin. Torque the
jam nut to 122 to 163 N∙m (90 to 120 ft-lb). Secure the pivot pin to the axle
support with the washer-head screw.
3. Position the axle and axle support under the machine with a jack. Raise the
assembly to the machine frame and align the mounting holes of axle support
and the machine frame.
4. Secure the rear axle support to the frame with the 4 flange-head screws
(item 20 in Figure 255).
5. Install the steering cylinder to the axle assembly; refer to
Steering Cylinder (4-Wheel Drive) (page
6. Position the end of the driveshaft to the bi-directional clutch on the rear axle.
Secure the driveshaft to the clutch with the 6 socket-head screws (item 9
in Figure 255) and 6 lock washers.
7. Install the 2 rear wheels to the rear axle; refer to
7–5).
8. If equipped with the rear weight(s), attach the weight(s) to the rear of the
machine.
9. Fill the axle and input gearbox with SAE 80W−90 weight gear lube; refer to
the Traction Unit Operator's Manual.
7–1).
5–123).
Figure 255) that secure the rear axle support to the
Figure 255) and thrust washer from the
255) between the axle boss and the axle support to
Figure 255) to secure the axle to the rear axle
5–124).
Page 8–47
Removing the Wheel
Figure 255) and 6 lock washers
Removing the
Installing the
Installing the Wheel (page
Drive Axles: Service and Repairs