Rear Roller Service (Non--Greasable Bearings)
Seal Removal (Fig. 9)
5. Install second spiral retaining ring onto roller shaft to
secure second bearing.
1.
Using a 1/4 inch thick, 3” X 3” square piece of steel,
make a seal removal tool as shown in Figure 10.
6. Install new seals to .030 inch (.76 mm) recessed into
roller.
2.
3.
Slide seal removal tool over roller shaft.
Using the tool as a template, locate, mark, and drill
two 7/64 inch (.109 inch diameter) holes in outer face of
seal.
2
3
4
5
4.
ScrewtwoNo.8(.164inchdiameter)by3/4inchlong
self--tapping screws into outer face of seal.
5.
removal tool.
Install two1/4--20by 1 inch long cap screws into seal
1
6.
assembly.
Alternatelytightencapscrewstopullsealoutofroller
Figure 9
4.
5.
1.
2.
3.
Roller
Roller shaft
Bearing
Retaining ring
Oil seal
NOTE: Seals will be destroyed when servicing the rear
roller. Do not re--use seals that have been removed.
.188”
dia. (2)
.625”
Bearing Removal (Fig. 9)
dia.
NOTE: The bearings are pressed onto the roller shaft
and loose fit into the roller.
.625”
.625”
1.
from roller shaft: catch ring removal notch with pick and
pull ring from shaft.
Remove seals from roller. Remove retaining rings
Tap 1/4--20
UNC (2)
2.
Loosely secure roller assembly in bench vise and
lightly tap one end of roller shaft until free from bearing
and housing.
1.05”
1.05”
3.
bearing on inner race and tapping on roller shaft.
Remove second bearing from shaft by supporting
Figure 10
4.
rings, and roller for damage. Replace components as
needed.
Discard removed bearings. Inspect shaft, retaining
Roller Assembly (Fig. 9)
1.
pressure equally to inner and outer bearing races.
Press newbearingontooneendofrollershaft.Apply
2.
Place spiral retaining ring on same end of shaft as
installed bearing.
3.
4.
pressure equally to inner and outer bearing races. The
inner race will contact shoulder of shaft before outer
race contacts shoulder of roller.
Install shaft with single bearing into roller.
Install second new bearing onto roller shaft. Apply
Groundsmaster 4500--D/4700--D
Page 8 -- 13
Cutting Units (Rev. B)
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| Document Type | Service Manual |
| Language | English |
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