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OPERATION AND MAINTENANCE
1. Adjust the depth stop by turning the handle in
(clockwise) to increase operating depth
Figure
4-10. Turn the handle out (counter-clockwise)
to decrease operating depth. One turn will equal
approximately 3/16" adjustment in depth.
2. The gauge on the side of the depth stop tube gives a
reference for depth setting. The "A" setting refers to
maximum operating depth.
IMPORTANT
For maximum operating depth, the lift wheels must
be in contact with the ground and carry some of the
machine weight. Raising the lift wheels off the
ground, permits uncontrolled depth of each frame
section and does not allow the self-leveler to
function properly.
Figure 4-10: Depth Stop Adjustment
Disc Blades
1. The 8530 Finisholl is equipped with low concavity
disc blades. This is 1.60" concavity for 22" diameter
blades and 1.40" concavity for 20" diameter disc
blades. The use of other concavity blades can give
unpredictable results and is not recommended.
2. The 22" x 4 ga (.256") diameter blades may be either
standard or rollable disc blades. When operating in
rocky conditions, the standard (non-rollable) blades
are recommended.
4-10
3. Sharpening – In some cases there is a desire to
See
sharpen disc blades for improved cutting. There are
several people who roll-sharpen disc blades. Most
disc blades used today are made of chrome-boron
steel. The chrome-boron steel has a higher hardness
than traditional carbon-steel blades for increased
wear and toughness. Higher hardness makes roll
sharpening more difficult often with mixed results,
and is not covered by warranty. Disc blade
manufacturers will not cover any alterations to blades
other than the place of manufacture. Results from
roll-sharpening damage may not be immediate, and
may take more than a season to be noticeable. If you
choose to sharpen disc blades, check with local
dealers for reputable experienced sharpeners that
will stand behind their work.
Disc Gang Operation
The disc gang depth on the Finisholl is controlled
independently from the overall depth of the implement.
The gang depth may be controlled by manual adjustment
(rachet jack on each section), or hydraulically.
1. OPERATION – Disc gang depth is typically set 1"
above the sweeps. This gives the sweeps a firm soil
surface to operate in allowing them to cut and clean
better. Avoid excessive depth and speeds; this will
cause ridging. Avoid large changes in disc gang
depth when operating in the field. Hydraulic disc
gangs can be used to make minimal depth changes.
Large disc gang depth changes will require the
Finisholl to be re-leveled from front-to-rear to keep
the sweeps operating level.
Disc blades are extremely sharp. Exercise
extreme care when working on or near disc
blades. Do not allow discs to roll over or fall onto
any bodily part. Do not allow wrenches to slip
when working near disc blades. Never push
wrenches toward disc blades. Failure to stay
clear of disc blade edges can cause serious
personal injury or death.
2. MANUAL – To set the disc gang depth with the
manual rachet jack adjustment, adjust the rachet
jack(s) on each section.Measure the distance
between the top of the disc gang and the bottom of
the Finisholl frame. Setting this dimension to 7-1/2"
will set the 22"diameter blades 1" above the sweeps
See Figure
DANGER
4-11.
F-756-0321
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