Zetor Major 80, Operator'S Manual, Page: 73 / 157

73
HYDRAULIC EQUIPMENT
NM13N015
POWER REGULATION OF THREE-POINT LINKAGE HEAVE
Power regulation of three-point linkage heave is a means of regulation with which the tools connected in rear three-point linkage
is automatically vertically readjusted depending on the change in soil resistance.
Place lever (2) to (f) position.
Shift lever (1) to (g) position, start tractor and by shifting lever (1) from (g) position in the direction of an arrow, set the depth of oil
cultivation (in (g) position, the depth of soil cultivation is smallest).
As soon as you determine the depth of soil cultivation, the lever (1) must be kept in constant position (1) and at the end of the row
to always heave tool connected in rear three-point linkage by only shifting the lever (2) to (e) position. By shifting lever (2) to (f)
position, you will return tool back to working position.
If there is oscillation of rear three-point linkage due to variable soil resistance, this can be limited by setting lower sensitiv-
ity of hydraulic system by turning the control (4) in the direction of an arrow.