Rear Roller Service - Toro GroundsmasterR 4300-D Service Manual

Rear Roller Service

Disassembly (Fig. 11)
1. Remove bearing lock nut from each end of roller
shaft.
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 set of outer seals and bearing from roll-
er tube by tapping on opposite end of shaft. Remove
shaft from roller tube.
3. Carefully remove inner seal from both ends of roller
tube taking care to not damage tube surfaces.
4. Discard removed seals and bearings.
5. Clean roller shaft and all surfaces on the inside of the
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)
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 in this chapter) and soft face
hammer to fully seat seals against roller shoulder (Fig.
12). Apply a small amount of grease around the lip of
both inner seals after installation.
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 a new bearing into one end of roller tube.
Use bearing/outer seal tool (see Special Tools in this
chapter) with a soft face hammer to fully seat bearing
against roller shoulder (Fig. 13). After bearing instal-
lation, make sure that it rotates freely with no binding.
B. Apply a small amount of grease around the lip of
both outer seals.
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.
D. Using the same process, install second outer
seal making sure to not crush the installed outer seal.
Again, make sure that bearing still freely rotates.
Cutting Decks
1
3
2
1. Roller tube
2. Roller shaft
3. Inner seal
4. Bearing
1. Roller tube
2. Inner seal
1. Roller tube
2. Inner seal
Page 7 - - 14
2
50 to 60 ft- -lb
(68 to 81 N- -m)
3
4
5
4
5
6
7
1
Figure 11
5. Outer seal
6. Bearing lock nut
7. Set screw
1 2
Figure 12
3. Inner seal tool
1 2 3
Figure 13
3. Bearing
4. Bearing/outer seal tool
Groundsmaster 4300--D
6
7
Loctite #242
3
4