Bedknife Replacement and Grinding
Removal
2
1.
Remove bedbar from frame (see Bedbar Removal).
1
2.
Remove screws from bedbar using a socket wrench
and bedknife screw tool (see Special Tools). Discard
screws. Remove bedknife from the bedbar (Fig. 13).
3.
Use scraper to remove all rust, scale and corrosion
from bedbar surface before installing bedknife.
3
Replacement
Figure 13
3.
1.
screws. Apply clean SAE 30 oil to the screws before
installing.
Make sure bedbar threads are clean. Use new
1.
2.
Screw
Bedbar
Bedknife
IMPORTANT: Do not use an impact wrench to tight-
en screws into the bedbar.
2.
Using a torque wrench and bedknife screw tool,
tighten screws to a torque of 200 to 250 in–lb (22 to
Nm). Use a torquing pattern working from the center
toward each end of the bedknife (Fig. 14).
28
3.
Install bedbar to frame (see Bedbar Installation).
Grinding
1
3
11
9
7
5
3
1
2
4
6
8
10 12
Since there can be variations in the mounting surface of
the bedbar, a new bedknife will not be perfectly flat after
it is installed. Because of this, it is necessary to backlap
or grind a new bedknife after installing it to the bedbar.
Follow the existing angle that was ground into the bed-
knife and grind only enough to make sure the top surface
is true (Fig. 15).
Figure 14
Top Face
Remove
Burr
Relief Angle
1.
Removal).
Remove bedbar from the cutting unit (see Bedbar
Front
Face
Note:
bedknife. Remove small amounts of material with each
pass of the grinder.
When grinding, be careful to not overheat the
Front Angle
Figure 15
2.
Use Toro Service Training Book, Sharpening Reel
and Rotary Mowers (part no. 80300SL) for bedknife
grinding information.
Bedknife Grinding Specifications
Bedknife relief angle
Front Angle
3
_
(see
Fig.
15)
NOTE: Relief angle is 7 for special "extended"bedknives
o
13
_
Front Angle Range
13
_
to
17
_
3.
Reinstall bedbar to cutting unit (see Bedbar Installa-
tion).
Greensmaster 3100
Page 10 - 13 Rev. D
Dual Point Adjust Cutting units
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
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|
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