Cutter Head Bearings Removal
1. Remove the cutter head as described under
Tap and Trim@ Head Disassembly,
page 47,
or
Flex Blade Removal from Drive Tube,
page 48.
2.
Remove the locknut and the machine screw
w
from the bearing housing. See Fig. 104.
DRIVE
TUBE
Figure 104
3.
Pull the bearing housing and shield assembly
off the bottom of the drive tube.
4. Remove the four machine screws that attach
the shield to the bearing housing. Separate
the shield from the bearing housing.
5.
Pry the star shaped spring grip out of the
bottom of the bearing housing.
CAUTION: Use extreme care
and make sure you are wear-
ing eye protection when re-
moving the star shaped
spring grip.
6.
Press the power shaft and bearings out of the
housing.
IMPORTANT: Anytime the bearings are
pressed out of the housing they should be
replaced because pressing against the inner
race typically damages the bearing.
7. Press the upper bearing off the power shaft.
8. Remove the grip rings.
9.
Press the lower bearing off the power shaft.
Note:
The roll pin does not have to be
removed for this operation.
Cutter Head Bearings Installation
See Fig. 105.
SHAFT
UPPER BEARING
LOWER
BEARING
Figure 105
1. Press the spacer and upper bearing into the
housing.
2.
Press the lower bearing onto the power shaft,
slightly past the lower snap ring groove.
3.
Install the two grip rings.
4.
Press the shaft, grip rings and bearings into
the housing. Make sure that the lower bear-
ing seats against the grip ring.
5.
Install the star spring grip
6.
Using four new nylon locknuts, fasten the
shield to the bearing housing.
7. Mount the bearing housing and shield
assembly on the drive tube and secure with
the machine screw and a new nylon locknut.
It may be necessary to rotate the drive shaft
slightly to get the drive shaft and flex shaft to
properly align.
8. Mount the trimmer implement on the drive
shaft as described under
Tap and Trim@
Head
-
Reassembly,
page 47, or under
Flex
Blade
-
Installation,
page 48.
43
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