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1. Set clevis height (per decal on inside
of A-frame).
2. Hook up tractor. Attach safety chain;
check operation of lights.
3. Adjust hose length on swinging hose boom.
4. Check tires to ensure equal air pressure.
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Tire pressure should be:
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16.5x16.1 10 ply
16.5x16.1 12 ply
16.5x22.5 truck tires
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40 psi 5-shank
48 psi 7-shank
60 psi 9-shank
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(16.5x22.5 is optional on 5- &
7-shank machines)
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12.5x15 gauge wheels
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26 psi 9-shank
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5. Check disk level'r blade angle. It should
be adjusted to the maximum aggressive position.
6. Check spacing of disk level'r arms. They
need to be centered between the deep-till
shanks. The outside disk level'r arms need
to be mounted a little wider, 32 in. (82 cm),
to the centerline of the next closest arm
toward the inside of the machine.
Field Settings
1. Determine depth of compaction zone. The
best operating depth is with the tip of the
point on the deep-till shanks approximately
1.5 in. (38 mm) below the compaction layers.
Optional lead shanks can be mounted ahead
of and in between the deep-till shanks and
are designed to run 2-4 in. (51-101 mm) shallower
than the deep-till shanks. Most compaction
layers can be found 7-11 in. (18-28 cm) deep.
2. Remove transport stops and replace with
the appropriate matched set of stroke control
channels for your desired shank depth. When
using 16.5x16.1 tires, begin with the 2.75
in. (70 mm) wide channel and adjust from this
channel. When using the 16.5x22.5 tires, begin
with the 1.5 in. (38 mm) wide channel and
adjust from this channel. Using the tractor
hydraulics, raise the front disk attachment
and the rear disk level'r to their maximum
raised position. On 9-shank models, raise
the wing gauge wheels to the maximum raised
position.
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3. Drive ahead in low gear at idle, lower
the machine to the stop collars, then adjust
the front disk attachment until the blades
are running approximately 3 in.(76 mm) deep.
Stop with the machine still in the ground
to check shank depth and machine levelness.
4. Check depth of deep-till shanks. The best
way to accurately measure operating depth
of the deep-till shanks is to dig away the
soil at the edge of the pass and lay a straight
edge across the soil horizontally. Then take
a sharp object and push it to the bottom of
the deep-till shank groove and measure depth.
5. Check levelness by removing the loose
soil directly behind the second set of disk
blades. Compare the depth of the groove made
by a disk mounted on the front of the disk
frame to the depth of a groove made by a disk
on the rear of the disk frame. If the machine
is level, both disks will be operating at
the same depth. If not, adjust the hitch clevis
and repeat steps 3 through 5 until proper
depth and levelness are achieved.
6. On 9-shank models, when the desired depth
and levelness is achieved, and while the machine
is still in the ground, the wing gauge wheels
need to be adjusted so that they contact the
ground to prevent wing bounce. These wheels
are not intended to control the operating
depth of the machine. Too much load could
damage the gauge wheel or the wing-fold hydraulic
cylinder.
7. Install stop collars to limit front disk
attachment to a depth of 3-5 in. (76-127 mm).
8. Set disk level'r depth. This should be
done at normal operating speeds of 4.5-6 mph
(7-10 kph).
- With lead shanks: Set the disk level'r
so the soil is level behind the main shanks.
- Without lead shanks: Set the disk level'r
to build a small berm behind the main shanks.
To see if the berm heights are correct,
drive across the pass at a 90o angle and
check across the track for levelness. If
not level, adjust depth as required. Adjust
the stop screws so that they are equal on
each side and disk level'r is against the
stops at operating depth.
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