Landoll 7822 Series Operator's Manual page 20

OPERATION & MAINTENANCE
2. Retract the four (4) front gauge cylinders completely.
There are two (2) cylinders on the main hitch. There
is one (1) additional cylinder on each of the two (2)
wing frames.
• Check that all of the polished chrome of the
cylinder rods is retracted into the cylinder body.
• This procedure will require that the front gauge
depth control (on the hitch frame) be adjusted to
it's most extreme depth setting.
• If the cylinder rods are for some reason not
completely retracted, then fully extend the front
gauge cylinders until they are fully extended and
continue extending them for an additional five (5)
to ten (10) seconds after they appear to be fully
extended. This procedure will re-synchronize all
of the gauge cylinders. It is a good practice to
re-synchronize the front gauge cylinders once or
twice daily by extending them completely and
holding the circuit control in the extend position
for an additional five (5) to ten (10) seconds.
3. The wheels and tires of the main frame hitch are not
adjustable. Leveling the front of the HSL from side to
side is accomplished by adjusting the wing front
gauge wheels. With the four (4) front gauge point
cylinders completely retracted, place a long straight
edge across the top of the center section frame.
Measure from the top of the hitch rockshaft spindle
bushings to the top of the top center section frame.
Confirm the distance to be approximately three and
one quarter (3-1/4) inches.
Top of Spindle Sleeve
3-1/4"
4-4
TABLE OF CONTENTS
Top of Wing Frame
Figure 4-2: Synchronizing and Leveling Front Gauge Points
4. The wing gauge wheels and tires on the 7822-17,
7822-20 and 7822-23 are BKT 410/50R16.5. Adjust
the wing gauge wheel cylinder mounts so that the
distance from the top of the wing frame to the top of
the wing gauge spindle sleeve is six (6) inches more
than the measurement confirmed in step number 3.
• So, if the measurement in step two was observed
to be 3-1/4 inches, then adjustments will need to
be made so that the distance from the top of the
wing frame to the top of the wing gauge spindle
sleeve is 9-1/4 inches (3-1/4 + 6 = 9-1/4) when
the cylinders are completely retracted.
5. Repeat this procedure for the other side of the 7822
HSL.
6. The final adjustment can be affected by several
factors, including tire inflation, machine width, and
the wing down pressure setting.
• Expect the hitch tires to squat slightly more than
wing front gauge tires.
• The final setting should be determined from field
observations. One of the simplest ways to
observe if the HSL is operating at a uniform
working depth across the entire machine, is to
stop abruptly when making a pass through a flat
area and look along the front or rear edge of the
wing frames and check for alignment and
straightness.
• Checking the working depth across the width of
the machine is also recommended.
Top of Frame
10-3/16"
Top of Spindle
Sleeve
5/8"
F-1045-0819