Blade Spindle Service - Toro Groundsmaster 4500-D Service Manual

Blade Spindle Service

Disassembly
1. Remove blade spindle from cutting deck (see Blade
Spindle Removal).
2. Loosen and remove spindle nut from top of spindle
shaft.
3. Press the spindle shaft out of the spindle housing us-
ing an arbor press. The shaft spacer remains on the
spindle shaft as the shaft is being removed.
4. Remove seals from spindle housing.
5. Allow the bearings, inside spacer and spacer ring to
drop out of the spindle housing.
6. Using a punch and hammer, drive both of the bearing
cups out of the spindle housing. Also, remove the large
spacer from the housing.
7. The large snap ring can remain inside the spindle
housing. Removal of large snap ring is very difficult.
Assembly
IMPORTANT: If new bearings will be installed into a
used spindle housing that has the original large
snap ring installed, discard the snap ring that
comes with the new bearings because it is not nec-
essary to replace the original snap ring. If a spindle
housing is being replaced, new bearings with their
matched spacer set and snap ring must be installed.
Replacement bearings are sold only with a matched
spacer set and snap ring. These parts cannot be
purchased separately.
1. If large snap ring was removed, or if replacing the
spindle housing, install snap ring into spindle housing
groove. Make sure snap ring is seated in groove.
IMPORTANT: If bearings are being replaced, make
sure to use the large spacer, inside spacer, and
spacer ring that are included in bearing set.
2. Install large spacer into top of spindle housing. The
spacer should fit against the snap ring.
3. Using an arbor press, push the bearing cups into the
top and bottom of the spindle housing. The top bearing
cup must contact the spacer previously installed, and
the bottom bearing cup must contact the snap ring.
Make sure that the assembly is correct by supporting the
first bearing cup and pressing the second against it (Fig.
6).
4. Pack the bearing cones with grease. Apply a film of
grease on lips of seals.
Cutting Units (Rev. B)
6
130 to 160 ft- -lb
(177 to 216 N- -m)
12
7
1. Spindle housing
2. Spindle plug
3. Spindle shaft
4. Oil seal
5. Shaft spacer
6. Spindle nut
1
5
1. Bearing cups
2. Large snap ring
3. Large spacer
Page 8 - - 10
Figure 5
7. Grease fitting
8. Bearing
9. Spacer ring
10. Spacer set (2 piece)
11. Bearing
12. Large snap ring
PRESS
4
3
2
Figure 6
4. Arbor press
5. Support
6. Arbor press base
Groundsmaster 4500--D/4700--D
2
4
11
10
9
8
1
4
5
3
6