Toro Groundsmaster 4300-D Service Manual page 174

Removing the Front Wheel Motor (continued)
Installing the Front Wheel Motor
Hydraulic System: Service and Repairs
17. Support the wheel motor to prevent it from falling during removal. Remove
the 4 locknuts (item 4 in
brake bracket to the frame.
18. Remove the 4 bolts (item 8 in
adapter, and spring clip from the wheel motor and frame.
19. Remove the wheel motor from the machine.
20. If the hydraulic fittings are to be removed from the wheel motor, mark the
fitting orientation for assembly purposes. Remove the fittings from the wheel
motor and discard the O-rings from the fittings.
Because of the internal differences in the wheel motors, do not
interchange the wheel motors on the machine (e.g., do not put the
right motor on the left side of the machine). If necessary, use the
Parts Catalog and Part Number on the wheel motor to identify the
right and left motors, there is also a yellow dot on the left motor.
1. If the hydraulic fittings were removed from the wheel motor, lubricate and
install new O-rings to the fittings. To properly align and install the fittings into
the wheel motor ports, use the marks that you made during the removal
process; refer to Installing the Hydraulic Fittings (SAE Straight Thread
O-Ring Fitting into the Component Port) (page
2. Position the wheel motor to the frame. Slide the brake assembly with the
brake adapter (item 7 in
motor and frame.
3. Install and tighten the 4 locknuts onto the 4 bolts to secure the motor and
brake components to the frame. Torque the bolts to 109 to 135 N∙m (80
to 100 ft-lb).
4. Clean the tapers of the wheel hub and wheel motor shaft.
5. Insert the square key (item 6 in
Align the wheel hub with key and slide the wheel hub onto the motor shaft.
Do not use the removed locknut to secure the wheel hub to the
wheel motor.
6. Install new locknut (item 13 in
secure the wheel hub to the motor shaft.
7. Remove the caps or plugs from the hydraulic tubes and wheel fittings.
8. Lubricate and install new O-rings to the fittings on the wheel motor. Use the
labels that you attached during the removal process to correctly connect the
hydraulic tubes to the wheel motor fittings; refer to
Hose and Tube (O-Ring Face Seal Fitting) (page
9. Install the brake drum (item 12 in
10. Position the end of the brake cable to the brake actuator lever. Attach the
cable to the brake actuator lever with the clevis pin and brake return spring.
Figure 91) from the 4 bolts that secure the motor and
Figure 91), brake assembly with the brake
IMPORTANT
Figure 91), spring clip, and 4 bolts onto the wheel
Figure 91) into the wheel motor shaft keyslot.
IMPORTANT
Figure 91) onto the wheel motor shaft to
Figure 91).
Page 4–112
4–11).
Installing the Hydraulic
4–9).
Groundsmaster
16226SL Rev C
® 4300-D