Rear Roller Service (Greasable Bearings with Bearing Nut)
Disassembly (Fig. 7)
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. 7)
7
1
Figure 7
1.
Install inner seals into roller tube making sure that
seal lip (and garter spring) faces end of tube. Use inner
sealtool(seeSpecialTools)andsoftfacehammertoful-
ly seat seals against roller shoulder (Fig. 8). Apply a
smallamountofgreasearoundthelipofbothinnerseals
after installation.
1.
2.
3.
4.
Roller tube
Roller shaft
Inner seal
Bearing
5.
6.
7.
Outer seal
Bearing lock nut
Set screw
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) with
asoftfacehammer tofullyseatbearing againstroller
shoulder (Fig. 9). After bearing installation, make
sure that it rotates freely with no binding.
Figure 8
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) and
soft face hammer to lightly seat seal against roller
shoulder (Fig. 10). Make sure that bearing still freely
rotates after seal installation.
Figure 9
4.
5.
D. Using the same process, install second outer
sealmakingsuretonotcrushtheinstalledouterseal.
Again, make sure that bearing still freely rotates.
1.
2.
3.
Roller tube
Inner seal
Bearing
Washer
Bearing/outer seal tool
Cutting Units
Page 7 -- 10 Rev. A
Groundsmaster 3505--D
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|---|---|
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| Language | English |
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