WARNING:
Do not transport or attach
equipment when the hydraulic system is in Draft
Control Use position Control for these operations.
Always lower hydraulic equipment to the ground before
stopping the tractor.
Draft Control Operation
Move the Draft Control Lever in the quadrant to find the
point near the center where the lift links neither raise
nor lower. This is the neutral point.
Lower the implement into work using the Draft control
Lever. Push the Lever forward to increase the draft
loading. Pull rearwards to reduce the draft loading. In
most circumstances, forward movement of the Draft
Control Lever will increase implement depth and
rearward movement will reduce the depth.
Once set, the tractor hydraulic system will automatically
adjust the implement depth to maintain an even pull on
the tractor and so reduce wheel slip to a minimum.
When lowering the implement into work push the Draft
Control Lever down to the bottom of the quadrant to
ensure positive engagement of the implement in the
ground then immediately raise the Draft Control Lever
until the required implement depth is achieved.
When the required implement working depth has been
established, set the adjustable stop adjacent to the Draft
Control Lever to locate the position for repeated use.
The Draft Control Lever may be eased sideways to
bypass the adjustable stop, if required.
A pressure sensitive feathering valve, installing within
the hydraulic system, automatically regulates the
hydraulic oil flow to give smoother response to draft
signals when using soil engaging implements. In
addition, some models have a manually operated flow
control valve fitted to regulate the rate of correction of
the hydraulic system.
CONTROL, INSTRUMENTS AND OPERATION
In order to operate the hydraulic three-point linkage the
auxiliary services control valve knob (if fitted) must be
correctly set. The auxiliary services control valve (A.S.C.
valve) directs oil to the three-point linkage, to external
cylinders or both together, as may be required.
To operate the three-point alone push the A.S.C. valve
knob fully in (rearward). See figure 12.
Pull the A.S.C. valve knob fully out (forward) to operate
external services only.
11. Hydraulic Control
1. Draft Control lever
2. Adjustable stop
3. Position Control lever
The midway position is selected to operate the three point
linkage and external cylinders simultaneously. See
OPERATING REMOTE CYLINDERS WITH THE A.S.C.
VALVE in this section of the manual.
10
12. A.S.C. Valve (where fitted)
1. A.S.C. tapping
2. A.S.C. valve knob
13. Flow Control Valve
1. Flow control valve rocker
1
