Toro Greensmaster 3150 Service Manual page 78

Rear Wheel Motor (Optional 3WD) Removal (Fig. 24)
1. Before removing any parts from the hydraulic sys-
tem, park the machine on a level surface, engage the
parking brake, lower the cutting units, and stop the en-
gine.
CAUTION
Before continuing further, read and become fa-
miliar with General Precautions for Removing
and Installing Hydraulic System Components.
2. Chock both front wheels to prevent the machine
from moving. Lift rear wheel off the ground using a jack,
and place blocks beneath the frame. Secure the rear
wheel off the ground.
3. Label hoses for reassembly. Remove both hose as-
semblies (4) and O–rings (23) from the hydraulic fittings
at the hydraulic motor and hub assembly (14). Allow
hoses to drain into a suitable container.
CAUTION
Support wheel and motor and hub assembly dur-
ing removal to prevent dropping and causing
personal injury.
4. Remove wheel (28) and hydraulic motor and hub
assembly from the castor fork (6) as follows:
A. Remove cap screws (12) and lock nuts (8) se-
curing flangettes (9 and 11) and bearing tab (8).
B. Remove both socket head screws (16), flat
washers (18), and lock nuts (29).
C. Lower wheel and hydraulic motor and hub as-
sembly from the castor fork.
5. Loosen both set screws (27) on bearing (10). Slide
flangettes and bearing off the motor shaft.
6. Remove grease fitting (31) from the hydraulic motor
and hub assembly. Remove four lug nuts (30) and wheel
assembly from the hub drive studs.
Note: For disassembly of the hub from the rear wheel
motor, see Rear Wheel (Optional 3WD) Disassembly in-
structions in Chapter 6 – Wheels and Brakes.
Hydraulic System
Rear Wheel Motor (Optional 3WD) Installation (Fig.
24)
Note: For assembly of the hub to the rear wheel motor,
see Rear Wheel (Optional 3WD) Assembly instructions
in Chapter 6 – Wheels and Brakes.
1. Make sure grease fitting (31) is removed from the
hydraulic motor and hub assembly (14).
2. Secure wheel assembly (28) to the four drive studs
of the hydraulic motor and hub assembly with four lug
nuts (30). Torque nuts from 70 to 90 ft–lb (95 to 122
Nm).
3. Reinstall grease fitting (31) onto hydraulic motor
and hub assembly so it points away from the wheel.
4. Slide flangette (11), bearing (10), and relube flan-
gette (9) onto the motor shaft.
5. Position hydraulic motor and hub assembly, flan-
gettes with bearing, and wheel into the castor fork (6).
Make sure hose fittings on the motor face rearward.
6. Secure hydraulic motor and hub assembly loosely
to the inside of the castor fork with both socket head
screws (16), flat washers (18), and lock nuts (29).
7. Secure flangettes with bearing loosely to the inside
of the castor fork with cap screws (12), bearing tab (7),
and lock nuts (8).
A. Position grease fitting on flangette downward.
B. Torque socket head screws (16) to 85 ft–lb (115
Nm).
C. Torque cap screws (12) to 30 ft–lb (41 Nm).
8. Apply loctite to both set screws (27). Torque set
screws from 80 to 100 in–lb (9.0 to 11.3 Nm).
9. Install hose both assemblies (4) and new O–rings
(23) to the hydraulic fittings at the hydraulic motor and
hub assembly.
Page 4 – 54 Greensmaster 3150