Toro Z Master Z300 Operator's Manual page 25

1. 1/8 inch (3 mm) of the nut past the axle
12. Install the assembled nut and axle into the wheel on
the side with the bearing and a new seal (Figure 27).
13. Place the wheel with the open end facing up and fill
the area inside the wheel with multi-purpose grease.
14. Install the second bearing and a new seal into the
wheel (Figure 27).
15. Apply thread locking adhesive to the second spacer
nut and install it onto the axle with the wrench flats
facing outward.
16. Torque the spacer nut to 75-80 in-lb (8-9 N⋅m) then
loosen it and torque it to 20–25 in-lb (2-3 N⋅m).
Make sure the axle does not extend past either nut
(Figure 26).
17. Install the seal guards over the wheel hubs and insert
the wheel into the caster fork (Figure 25).
18. Install the caster bolt and tighten the nut (Figure 25).
Important: Check the bearing adjustment often
to prevent seal and bearing damage. Spin the
caster tire. The tire should not spin freely more
than 1 to 2 revolutions or have any side-to-side
play between the caster fork. If the wheel spins
freely, adjust the torque on the spacer nut until
there is a slight amount of drag.
Figure 26
1. Spacer nut
2. Bearing seal (new seals
required)
3. Bearing
25
Figure 27
4. Caster wheel
5. Nut and axle assembled