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4.9 CONTROLLED DRAFT AND POSITION LIFT
(Optional)
The tractor can be equipped with a controlled draft and position lift. With this
type of lift, two double acting spooling valves can be installed and controlled by
levers 2, Fig. 17.
The following functions can be available:
• Raise and lower with floating operating mode.
• Controlled position.
• Controlled draft.
• Mixed configuration.
The information and controls detailed below refer to fig. 17 where:
- P Controlled position potentiometer
- S Controlled draft potentiometer
- A Lift control lever
4.9.1 Raise/Lower lift with floating mode
In floating mode the lift arms are completely free and the implement can move at
will in the ground. It is typically used to ridge plough and cultivate or for any kind
of implement that must be able to follow the ground contours.
Controls::
- P turned completely towards the minus (-) position.
- S turned completely towards the minus (-) position.
- A:
Position 0 - Lever in middle position. The lift is in its neutral position. The
implement holds at the position it is in.
Position 1 - Lever down. The implement lowers until it is on the ground. In this
position the implement stays on the surface following ground contours.
Position 2 - Lever forward. The implement raises as long as the lever is held
forward. When it reaches its maximum height, a limit switch will trip and stop
the lift. When the lever is released, it automatically returns to its neutral
position "0".
Regulating lift raise/lower rate:
The oil volume regulator1 fig.17 can be used to regulate lift raise/lower rate.
• Turn the knob clockwise to decrease lift raise and lower rate.
• Turn the knob counter-clockwise to increase lift raise and lower rate.
4.9.2 Controlled position
This operating mode is ideal for job that require constant implement position on
or in the ground (drilling, dozing, trailed manure spreading, ridge ploughing, side
mowing, etc.).
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