Toro 3200, Руководство по обслуживанию

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2
Bedknife Replacement and Grinding
Removal
1. Remove bedbar from frame (see Bedbar Removal).
2. Remove screws from bedbar using a socket wrench
and bedknife screw tool (see Special Tools). Discard
screws. Remove bedknife from the bedbar (Fig. 35).
3. Use a scraper to remove all rust, scale and corro-
sion from bedbar surface before installing new bedknife
(Fig. 36).
4. Install bedbar to frame (see Bedbar Installation).
1
3
Figure 35
Replacement
1. Screw 3. Bedknife
2. Bedbar
1. Make sure bedbar threads are clean.
2. Use new screws. Apply anti–seize lubricant to the
screw before installing.
IMPORTANT: Do not use an impact wrench to tight-
en screws into the bedbar.
3. Using a torque wrench and bedknife screw tool,
tighten screws to a torque of 200 to 250 in–lb (230 to 288
kg–cm). Use a torquing pattern working from the center
toward each end of the bedknife (Fig. 37).
Figure 36
Grinding
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 sur-
face is true (Fig. 38).
1. Remove bedbar from the cutting unit (see Bedbar
Removal).
Note: When grinding, be careful to not overheat the
bedknife. Remove small amounts of material with each
pass of the grinder.
Figure 37
1 2 4 6 8 3 5 7 9 10 12 11 13
2. Use TORO Sharpening Reel and Rotary Mowers
Manual, Form No. 80-300 PT, for grinding the bedknife.
Relief Angle
Front Angle
Top Face
Remove
Burr
Front
Face
Bedknife Grinding Specifications
Relief Angle 5
_
Relief Angle Range 3
_
to 6
_
Front Angle 15
_
Front Angle Range 13
_
to 17
_
3. Reinstall bedbar to the cutting (see Bedbar Installa-
tion).
Figure 38
Cutting Units Page 8 – 30 Greensmaster 3200/3200–D