Rev. A
Groundsmaster 3505--DPage 7 -- 14Cutting Units
Blade Spindle Service
Disassembly (Fig. 15)
1. Loosen and remove spindle nut from top of spindle
shaft.
2. Press the spindle shaft out ofthe spindle housing us-
ing an arbor press. The shaft s pacer remains on the
spindle shaft as the shaft is being removed.
3. Remove seals from spindle housing.
4. Allow the bearings, inside spacer and spacer ring to
fall out of the spindle housing.
5. Usinga punch and hammer, driveboth of thebearing
cups out of the spindle housing. Also drive the large
spacer out of the housing.
6. The large snap ring should remain inside the spindle
housing because it is difficult to remove.
Assembly (Fig. 15)
IMPORTANT: If new bearings will be installed into a
used spindle housing it may not be necessary to re-
place the original large snap ring. If the original
snap ring is in good condition with no evidence of
damage (e.g. spun bearing), leave the snap ring in
the housing and discard the snap ring that came
with the new bearings. However, new bearings with
their matched spacer set and large snap ring must
ALWAYS be installed when the spindle housing is
being replaced.Replacement bearingsare sold only
with a matched snap ring and spacer set (Fig. 16).
These parts cannot be purchased separately.
1. If large snap ring was removed or if replacing the
spindle housing, install large 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 new bearing set.
2. Using an arbor press, push large spacer into top of
spindle housing. Thespacer should fit tightly against the
large snap ring.
3. Thoroughly oil the bearing cups. 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 c ontact the snap ring. Make sure that the as-
sembly is correct by supporting the first bearing cup and
pressing the second against it (Fig 17).
1. Spindle housing
2. Spindle plug
3. Spindle shaft
4. Oil seal
5. Shaft spacer
6. Spindle nut
7. Grease fitting
8. Bearing
9. Spacer ring
10. Spacer set (2 piece)
11. Bearing
12. Large snap ring
Figure 15
3
5
4
1
7
2
4
6
8
130 to 160 ft--lb
(176 to 216 N--m)
9
10
11
12
1. Bearing
2. Spacer ring
3. Large snap ring
4. Inner spacer
5. Outer spacer
Figure 16
4
5
1
3
2
1
