Toro Groundsmaster 7210 Service Manual page 286

Assembling the Polar Trac Wheel Hub (continued)
Chassis: Service and Repairs
3. Lubricate the inside of a new seal and press the seal into the wheel hub
with the seal lip toward the bearing.
4. Fill the wheel hub cavity between the bearings with approximately 50% full of
grease. Position the remaining bearing into the outer bearing cup.
5. Slide the wheel hub assembly onto the spindle shaft and thread the slotted
hex nut onto the shaft. Do not fully tighten the nut or install the cotter pin.
6. While you turn the wheel hub by hand, torque the slotted hex nut to 8.5 to
11.3 N∙m (75 to 100 in-lb) to set the bearings and then loosen the nut until
the hub has end-play.
7. While you turn the wheel hub by hand, torque the slotted hex nut to 1.7 to 2.3
N∙m (15 to 20 in-lb). Also, align the hex nut slot with the shaft hole.
Note: After you tighten the hex nut, ensure that the wheel hub does not
have any free-play.
8. Install the cotter pin and install the dust cap.
9. Install the drive track and wheels to the machine; refer to
Trac Wheels (page
Note: Ensure that the drive track is installed in the correct direction of
rotation.
10. Lower the machine to the ground and torque all the wheel-lug nuts to 88 to
115 N∙m (65 to 85 ft-lb) in a crossing pattern.
6–8).
Page 6–24
Installing the Polar
Groundsmaster 7210
16222SL Rev C