Adjusting the Transport Levelling Control Arm
With the disc attached to the tractor, the hydraulics
connected and with the transport stay removed from
the hydraulic cylinder; the disk can be adjusted to
transport level as in illustration A. The adjustment is
carried out by turning the nuts indicated in the
illustration. When the disc is raised out of the
ground in the transport position, there is pressure
against these nuts. Therefore, to make adjustment easier, lower the disc to the ground to take pressure
off the nut. The nut can then be turned easily by hand or wrench. To lower the front of the disc as in
illustration B, turn the nuts in the direction indicated as B. To raise the front of the disc as in illustration
C, turn the nuts in the direction indicated as C. It may be necessary to raise and lower the disc a
number of times to attain the desired result. Once the disc is level, lock the nuts together on the
eyebolt shaft. This adjustment remains unchanged as long as there is no change in the tractor hitch
height.
WARNING: To avoid serious injury to self or others, do not allow anybody on or near the disc
when it is being raised or lowered. In particular, if someone other than the tractor operator is
making adjustments to the disc, the tractor should be switched off while adjustments are
being made and only restarted when that person is well clear of the disc.
Transporting the Disc
Raise the disc to its maximum height by completely
extending the hydraulic cylinder. Install the transport
stay over the hydraulic cylinder rod with the plated
end against the head gland of the cylinder. Install the
retaining pin. On tractors with open centered
hydraulics, switch the tractor off and relieve the
hydraulic pressure by moving the hydraulic spool lever
back and forth. With closed center systems, carefully
use the hydraulics to take the pressure off the
hydraulics and allow the weight of the disc to be taken
up by the transport stay.
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