Toro Groundsmaster 3280-D Service Manual page 197

Removal (Fig. 62)
1. Park machine on a level surface, lower cutting deck
(or implement), stop engine, engage parking brake and
remove key from the ignition switch.
2. Drain oil from rear axle (see Traction Unit Operator's
Manual).
CAUTION
When changing attachments, tires, or perform-
ing other service, use correct blocks, hoists,
and jacks. Make sure machine is parked on a
solid, level surface such as a concrete floor.
Prior to raising machine, remove any attach-
ments that may interfere with the safe and
proper raising of the machine. Always chock or
block wheels. Use jack stands or solid wood
blocks to support the raised machine. If the ma-
chine is not properly supported by blocks or
jack stands, the machine may move or fall,
which may result in personal injury.
3. Chock front wheels and jack up rear of machine (see
Jacking Instructions in Chapter 1 − Safety). Support ma-
chine with jack stands or solid wood blocks.
4. Remove wheels from rear axle.
5. Remove six (6) socket head screws (item 10) and
lock washers (item 9) that secure driveshaft to bidirec-
tional clutch on rear axle. Position end of driveshaft
away from clutch.
6. Remove steering cylinder from rear axle (see Steer-
ing Cylinder Removal in Service and Repairs section of
Chapter 5 − Hydraulic System).
7. If machine has rear weight(s) attached to frame, re-
move weight(s).
8. Support rear axle to prevent it from falling. Remove
two (2) cap screws (item 26) with lock nuts (item 21) and
then four (4) flange head screws (item 20) that secure
rear axle support to equipment frame. Lower rear axle
and rear axle support from machine.
9. Remove jam nut (item 18) and thrust washer (item
17) from axle pin (item 23) that attaches rear axle to rear
axle support. Remove washer head screw (item 24) that
secures flange of axle pin to rear axle support.
10.Remove axle pin. Separate rear axle support from
rear axle. Note location of thrust washers on both ends
of axle mounting boss.
Groundsmaster 3280−D/3320
Installation (Fig. 62)
1. Position rear axle support to axle. Install thrust wash-
ers (items 32 and 33) between axle boss and axle sup-
port to minimize clearance.
2. Install axle pin (item 23) to secure axle to rear axle
support. Install thrust washer (item 17) and jam nut (item
18) onto pivot pin. Torque jam nut from 90 to 120 ft−lb
(122 to 163 N−m). Secure pivot pin to axle support with
washer head screw (item 24).
3. Position axle and axle support under machine with a
jack. Raise assembly to machine frame and align
mounting holes of axle support and machine frame.
4. Secure rear axle support to frame with four (4) flange
head screws (item 20) and two (2) cap screws (item 26)
with lock nuts (item 21).
5. Install steering cylinder to axle assembly (see Steer-
ing Cylinder Installation in Service and Repairs section
of Chapter 5 − Hydraulic System).
6. Position end of driveshaft to bidirectional clutch on
rear axle. Secure driveshaft to clutch with six (6) socket
head screws (item 10) and lock washers (item 9).
Failure to maintain proper wheel lug nut
torque could result in failure or loss of wheel
and may result in personal injury.
7. Install wheels to axle. Torque wheel lug nuts from 70
to 90 ft−lb (95 to 122 N−m).
8. Lower machine to ground.
9. If equipped with rear weight(s), attach weight(s) to
rear of machine.
10.Fill axle and input gearbox with SAE 80W−90 weight
gear lube (see Traction Unit Operator's Manual).
11. Start engine and check for component interference
as steering wheel is turned from lock to lock.
12.Check rear wheel toe−in and adjust if necessary (see
Traction Unit Operator's Manual).
13.Check steering stop bolt adjustment on both sides of
axle. At full RH and LH turns, a gap of 0.088" (2.2 mm)
should exist between bevel gear case casting and stop
bolt on axle case.
Rev. A
Page 8 − 35
WARNING
Drive Axles