Rear Roller Service
Disassembly (Fig. 11)
2
50
to 60 ft--lb
1.
shaft.
Remove bearing lock nut from each end of roller
3
(68 to 81 N--m)
4
5
2.
Loosely secure roller assembly in bench vise and
lightly tap one end of roller shaft until outer seals and
bearing are removed from opposite end of roller tube.
Remove second setofouter seals andbearing fromroll-
er tube by tapping on opposite end of shaft. Remove
shaft from roller tube.
6
7
1
2
3
4
5
3.
tube taking care to not damage tube surfaces.
Carefully remove inner seal from both ends of roller
6
4.
5.
Discard removed seals and bearings.
Loctite #242
Clean roller shaft andallsurfaces on theinside ofthe
roller tube. Inspect components for wear or damage.
Also, carefully inspect seating surface and threads of
bearing lock nuts. Replace all damaged components.
Assembly (Fig. 11)
7
1
Figure 11
1.
Install inner seals into roller tube making sure that
seal lip (and garter spring) faces end of tube. Use inner
seal tool (see Special Tools inthis chapter) and soft face
hammer to fully seat seals against roller shoulder (Fig.
1.
2.
3.
4.
Roller tube
Roller shaft
Inner seal
Bearing
5.
6.
7.
Outer seal
Bearing lock nut
Set screw
12).
Apply a small amount of grease around the lip of
both inner seals after installation.
1
2
3
IMPORTANT: During assembly process, frequently
check that bearings rotate freely and do not bind. If
any binding is detected, consider component re-
moval and reinstallation.
2.
Install new bearing and outer seals into one end of
roller tube:
A. Position anew bearing into one end ofrollertube.
Use bearing/outer seal tool (see Special Tools in this
chapter) withasoftfacehammer tofullyseatbearing
against roller shoulder (Fig. 13). After bearing instal-
lation,makesurethatitrotatesfreelywithnobinding.
Figure 12
3.
1.
2.
Roller tube
Inner seal
Inner seal tool
1
2
3
B. Apply a small amount of grease around the lip of
both outer seals.
4
C. Install first outer seal into roller tube making sure
that seal lip (and garter spring) faces end of tube.
Use bearing/outer seal tool (see Special Tools in this
chapter) and soft face hammer to lightly seat seal
against roller shoulder (Fig. 14). Make sure that
bearing still freely rotates after seal installation.
Figure 13
3.
4.
D. Using the same process, install second outer
sealmakingsuretonotcrushtheinstalledouterseal.
Again, make sure that bearing still freely rotates.
1.
2.
Roller tube
Inner seal
Bearing
Bearing/outer seal tool
Cutting Decks
Page 7 -- 14
Groundsmaster 4300--D
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