Adjusting the Transport Levelling Control Arm
With the disk 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 disk is raised out of the ground in the transport position, there is pressure against these nuts. Therefore, to make adjustment easier, lower the disk 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 disk as in illustration B, turn the nuts in the direction indicated as B. To raise the front of the disk as in illustration C, turn the nuts in the direction indicated as C. It may be necessary to raise and lower the disk a number of times to attain the desired result. Once the disk 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 disk when it is being raised or lowered. In particular, if someone other than the tractor operator is making adjustments to the disk, the tractor should be switched off while adjustments are being made and only restarted when that person is well clear of the disk.
Transporting the Disk
Raise the disk 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 disk to be taken up by the transport stay.
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