Toro Groundsmaster 4100-D Service Manual page 199

Planetary Wheel Drive Removal (Fig. 5)
1. Park machine on a level surface, lower cutting unit,
stop engine, engage parking brake, and remove key
from the ignition switch.
2. Drain oil from planetary wheel drive/brake assembly
(see 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 rear wheels and jack up front of machine (see
Jacking Instructions in Chapter 1 − Safety). Support ma-
chine with jack stands or solid wood blocks.
4. Remove front wheel assembly.
5. Remove four (4) flange head screws that secure
brake assembly to planetary assembly (see Brake As-
sembly in this Chapter).
6. Support hydraulic wheel motor to prevent it from fal-
ling. Remove two (2) cap screws that secure wheel mo-
tor to planetary assembly.
7. Support planetary assembly to prevent it from falling.
Loosen and remove flange head screws that secure
planetary assembly to frame. Remove planetary as-
sembly from machine.
Planetary Wheel Drive Installation (Fig. 5)
1. Inspect gasket between brake and planetary assem-
blies. Replace as needed.
2. Position planetary assembly to machine. Install
flange head screws that secure planetary assembly to
frame. Torque screws from 75 to 85 ft−lb (101 to 115
N−m).
3. Secure brake assembly to planetary assembly with
four (4) flange head screws (see Brake Assembly in this
Chapter). Torque screws from 75 to 85 ft−lb (101 to 115
N−m).
Groundsmaster 4100−D
4. Secure hydraulic wheel motor to planetary assembly
with two (2) cap screws. Torque screws from 75 to 85 ft−
lb (101 to 115 N−m).
Failure to maintain proper wheel lug nut
torque could result in failure or loss of wheel
and may result in personal injury.
5. Install wheel assembly. Torque lug nuts from 85 to
100 ft−lb (115 to 135 N−m).
6. Lower machine from jack stands.
7. Make sure drain plug is installed in bottom of brake
assembly (Fig. 6). Fill planetary wheel drive/brake as-
sembly with SAE 85W−140 gear lube (see Operator's
Manual). Capacity is approximately 16 oz. (.47 l) per
wheel.
8. Check for proper brake operation (see Operator's
Manual).
1
4
1. Brake housing
2. Wheel motor cap screw
3. Brake flange screw
Page 6 − 9
WARNING
2
3
5
Figure 6
4. Planetary flange screw
5. Brake drain plug
Axles, Planetaries, and Brakes