Toro Groundsmaster 4300-D, Руководство оператора

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Blade Maintenance
Blade Safety
•
Inspect the blade periodically for wear or damage.
•
Use care when checking the blades. Wrap the
blades or wear gloves, and use caution when
servicing the blades. Only replace or sharpen the
blades; never straighten or weld them.
•
On multi-bladed machines, take care as rotating 1
blade can cause other blades to rotate.
Servicing the Blade Plane
The rotary deck comes from the factory preset at 5
cm (2 inches) height of cut and blade rake of 7.9 mm
(0.310 inch). The left and right heights are also preset
to within ± 0.7 mm (0.030 inch) of the other.
The cutting deck is designed to withstand blade
impacts without deformation of the chamber. If a solid
object is struck, inspect the blade for damage and the
blade plane for accuracy.
Inspecting the Blade Plane
1. Remove the hydraulic motor from the cutting
deck and remove the cutting deck from the
tractor.
2. Use a hoist (or minimum of 2 people) and place
the cutting deck on a flat table.
3. Mark 1 end of the blade with a paint pen or
marker. Use this end of the blade to check all
heights.
4. Position the cutting edge of the marked end of
the blade at 12 o’clock (straight ahead in the
direction of mowing) (
Figure 100 ) and measure
height from table to cutting edge of blade.
g011353
Figure 100
5. Rotate the marked end of the blade to the 3 and
9 o’clock positions (
Figure 100 ) and measure
the heights.
6. Compare the 12 o’clock measured height to the
height-of-cut setting. It should be within 0.7 mm
(0.030 inch). The 3 and 9 o’clock heights should
be 1.6 to 6.0 mm (0.06 to 0.24 inch) higher than
the 12 o’clock setting and within 1.6 to 6.0 mm
(0.06 to 0.24 inch) of each other.
Note:
If any of these measurements are not within
specification, proceed to Adjusting the Blade Plane
(page 71) .
Adjusting the Blade Plane
Start with the front adjustment (change 1 bracket at a
time).
1. Remove the height-of-cut bracket (front, left, or
right) from the deck frame (
Figure 101 ).
2. Adjust 1.5 mm (0.060 inch) shims and/or 0.7 mm
(0.030 inch) shim between the deck frame and
bracket to achieve the desired height setting
(
Figure 101 ).
g031692
Figure 101
1. Height-of-cut bracket 2. Shims
3. Install the height-of-cut bracket to the deck
frame with the remaining shims assembled
below the height-of-cut bracket.
4. Secure the socket-head bolt/spacer and flange
nut.
Note:
Socket-head bolt/spacer are held
together with thread-locking adhesive to prevent
the spacer from falling inside the deck frame.
5. Verify the 12 o’clock height and adjust if needed.
6. Determine if only 1 or both (right and left)
height-of-cut brackets need to be adjusted. If
the 3 or 9 o’clock side is 1.6 to 6.0 mm (0.06 to
0.24 inch) higher than the new front height then
no adjustment is needed for that side. Adjust the
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