Blade Spindle Service - Toro GroundsmasterR 4300-D Service Manual

Blade Spindle Service

Disassembly (Fig. 5)
1. Remove blade spindle from cutting deck (see Blade
Spindle Removal in this section).
2. Loosen and remove spindle nut from top of spindle
shaft.
3. Remove the spindle shaft from the spindle housing
which may require the use of an arbor press. The spindle
shaft spacer should remain on the spindle shaft as the
shaft is being removed.
4. Carefully remove oil seals from spindle housing not-
ing direction of seal lips.
5. Allow the bearing cones, inner bearing spacer and
spacer ring to drop out of the spindle housing.
6. Using an arbor press, remove both of the bearing
cups and the outer bearing spacer from the housing.
7. The large snap ring can remain inside the spindle
housing. Removal of this snap ring is very difficult.
Assembly (Fig. 5)
NOTE: A replacement spindle bearing set contains two
(2) bearings, a spacer ring and a large snap ring (items
1, 2 and 3 in Fig. 6). These parts cannot be purchased
separately. Do not mix bearing set components from
one deck spindle to another.
NOTE: A replacement bearing spacer set includes the
inner spacer and outer spacer (items 4 and 5 in Fig. 6).
Do not mix bearing spacers from one deck spindle to
another.
IMPORTANT: If new bearings are installed into a
used spindle housing, it may not be necessary to re-
place the original large snap ring. If the original
large snap ring is in good condition with no evi-
dence of damage (e.g. spun bearing), leave the snap
ring in the housing and discard the large snap ring
that comes with the new bearings. If the large snap
ring is found to be damaged, replace the snap ring.
1. If large snap ring was removed from spindle housing,
install snap ring into housing groove. Make sure snap
ring is fully seated in groove.
2. Install outer bearing spacer into top of spindle hous-
ing. The spacer should fit against the large snap ring.
Cutting Decks
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
3
1
1. Bearing
2. Spacer ring
3. Large snap ring
Page 7 - - 10
Figure 5
7. Grease fitting (2 used)
8. Bearing
9. Spacer ring
10. Spacer set (2 piece)
11. Bearing
12. Large snap ring
4
2
Figure 6
4. Inner bearing spacer
5. Outer bearing spacer
Groundsmaster 4300--D
2
4
11
10
9
8
1
4
5
3
5