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If the pressure on the centre axle are not identical with that on the
side arm axles, the pressure in the hydraulic system may be dissipat-
ed and the system should be refilled with oil. If, however, the earth
piles up in front of the centre axle or the it only clears rocks with
difficulty, the pressure is too high and should be lowered.
Never set the pressure higher than 70 bar, as this may damage the
centre axle and result in very uneven working of the field.
Operating speed
An operating speed of 6-10 km/h is recommended, but always operate accord-
ing to conditions.
Power requirement will depend on soil type, terrain and speed. This is a cru-
cial factor as it determines the working depth with crackerboards and the har-
row section.
Table 2, Guide to power requirement in HP
Adjusting crackerboard
Page 20
Rollomaximum XL
Working width
Power requirement
Crackerboard depth is hydraulically
adjustable. The angle of attack of
the tines is manually adjusted via
the spindles (A). To ensure uniform
crackerboard angle setting, there are
numbers on the side of the spindles.
The angle set will be retained re-
gardless of depth, as the tines are
mounted in a parallelogram array.
For an aggressive tine setting (vertical) make the spindles shorter.
For a passive tine setting (horizontal) make the spindles longer.
930
Min. 275
A
1240
Min. 350
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