New Holland WorkMaster 50 Service Manual page 402

Hydraulic systems - Main lift system
Combined operation for position and draft control
In case of workings carried out under draft control on not-homogeneous soils, during which excessive implement
penetration may occur, it is convenient to use the combined position and draft control.
Have the implement penetrated into the ground and search for the desired working depth in the way described for the
draft control.
When the desired depth is reached, gradually move up the lever 1 till the lower links slightly start raising.
The rock shaft operates under controlled draft, but at the same time it prevents the implement from excessively pen-
etrating into the ground causing a not very uniform work, when coming up against a less hard ground.
For raising and moving the implement penetrated at the end and beginning of each pass, acting on position lever 1
only.
NOTE: It is not correct to find the position with the draft lever 2 because the lifting and lowering of arms with this lever
changes with the top link position.
This can be on neutral-positive-negative-position depending on the draft force, or to change the force on the top link
bracket as per the implement weight.
Internal linkage system
A) Functioning of position control
B) Functioning of draft control
C) Combined functioning of position and draft control
Functioning of position control
2
GNIL14TR04600FB
See 2.
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