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Ploughing with control hydraulic
So that the hydraulic control functions properly, the following must
be observed.
- Position upper link (1) so that the attachment point (P1) on the plough
during operation is somewhat higher than the attachment point (P2)
on the tractor.
Pinning the upper link
LL, RL = Pinning position for securing
lower link
RL = Pinning position for securing upper link
See chapter „ATTACHING TO THE TRACTOR“ also.
- During operation the plough should lie lengthwise as parallel as possible to the ground
surface.
- The working depth is set with the lifting gear via the servo-valve firstly.
Depending upon the hydraulic control model, varying ground resistance when ploughing
is passed on to the control servo-valve via the upper link (1) or both the lower links. The
relevant impulse is then converted causing the lifting gear to lift or lower.
An example: Securing upper link
The plough penetrates deeper into the ground.
This causes the pressure on the control servo-valve via the upper link to become greater.
As a consequence, the control valve remains switched to lift until the set working depth is reached again.
Note:
Follow the tractor manufacturer’s operating manual also.
Optional equipment:
Hydraulic cutting width adjustment (SERVO PLUS)
A hydraulic cylinder actuates the adjusting unit. Therefore an additional double-action control unit is necessary on the tractor.
Limitless cutting width adjustment can be carried out during ploughing. The drawing line position is not influenced by this (see "Setting the
drawing point (Z)").
Advantages:
- accurate ploughing along boundaries.
- ploughing around obstacles (masts, trees, etc.).
TD65/92/27
1
P1
P2