Toro Groundsmaster 4100-D Service Manual page 243

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
16).
4. Pack the bearing cones with grease. Apply a film of
grease on lips of oil seals.
5. Install lower bearing cone and oil seal into bottom of
spindle housing. Note: The lower seal must have the lip
facing out (down) (Fig. 18).
IMPORTANT: If bearings are being replaced, make
sure to use the spacer ring that is included in bear-
ing set.
6. Slide spacer ring and inner bearing spacer into
spindle housing, then install upper bearing cone and oil
seal into top of housing. Note: The upper seal must have
the lip facing in (down) and be recessed into the spindle
housing .095" (2.4 mm) (Fig. 18).
7. Inspect the spindle shaft and shaft spacer to make
sure they are free of burrs or nicks that could possibly
damage the oil seals. Lubricate the shaft with grease.
8. Install spindle shaft spacer onto shaft. Carefully slide
spindle shaft with spacer up through spindle housing.
The bottom oil seal and spindle spacer fit together when
the spindle is installed fully.
9. Lightly grease o−ring and install to top of spindle
shaft.
10.For drive spindle, position motor mount to top of
spindle assembly.
NOTE: Early production spindle assemblies included a
v−ring seal (item 4) which has been found to be unnec-
essary. Do not install a v−ring seal when assembling the
spindle.
11. Install pulley (hub down), flat washer, and lock nut to
spindle shaft. Tighten lock nut from 130 to 150 ft−lb (176
to 203 N−m).
12.Attach a hand pump grease gun to grease fitting on
housing and fill housing cavity with grease until grease
starts to come out of lower seal. Note: Pneumatic
grease guns can produce air pockets when filling large
cavities and therefore, are not recommended to be used
for proper greasing of spindle housings.
13.Rotate spindle shaft to make sure that it turns freely.
Groundsmaster 4100−D
1
5
1. Bearing cups
2. Large snap ring
3. Large outer spacer
1
2
3
1
1. Bearing
2. Spacer ring
3. Large snap ring
1. Bottom seal installation
Rev. E
Page 8 − 17
PRESS
4
3
2
Figure 16
4. Arbor press
5. Support
6. Arbor press base
4
5
Figure 17
4. Inner spacer
5. Outer spacer
.095" (2.4 mm)
1
Figure 18
2. Upper seal installation
Cutting Deck
6
2