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centre,
b
– tractor wheelbase,
c
– distance between the rear axle centre and the centre point of the hitch bolt of the rear-
mounted equipment,
d
– distance between the machine centre of gravity from the hitch bolts (roller without
smoothing harrow
– 0.8 m, roller with smoothing harrow),
x
– distance of the centre of gravity from the rear axle (assume 0.45 if the manufacturer
does not provide this parameter).
Minimum load at the front if this is a rear-mounted machine:
𝐺
𝑃𝑚𝑖𝑛
=
𝐺
𝑇
·
(c + d) − 𝑇
𝑝
· b + 0.2 · 𝐺
𝑐
· b
a + b
Minimum load at the back if this is a front-mounted machine:
𝐺
𝑇𝑚𝑖𝑛
=
𝐺
𝑃
·
a − 𝑇
𝑇
· b + x · 𝐺
𝑐
· b
a + b + d
Actual load on the front axle:
𝑇
𝑃𝑡𝑜𝑡𝑎𝑙
=
𝐺
𝑃
·
(a + b) − 𝑇
𝑝
· b − 𝐺
𝑇
· (c + d)
b
Actual total weight:
𝐺
𝑡𝑜𝑡𝑎𝑙
= 𝐺
𝑝
+ 𝐺
𝐶
+ 𝐺
𝑇
Actual load on the rear axle:
𝑇
𝑇𝑡𝑜𝑡𝑎𝑙
= 𝐺
𝑡𝑜𝑡𝑎𝑙
− 𝑇
𝑃𝑡𝑜𝑡𝑎𝑙
While attaching the smoothing harrow to the three-point linkage of the tractor, complete
the following steps:
•
Switch the tractor hydraulic system into adjustment position.
•
Remove lower hitch bolts (if the tractor lift is not equipped with hooks).
•
Drive forwards carefully, suspend the machine on the lower bars and secure.
•
attach the tractor upper fastener; during operation of the unit, the hitch point of the
upper fastener at the unit must be higher than the attachment point of this fastener at
the tractor.
•
Check the operation of roller lifting, lowering and the hydraulic system.
CAUTION!
Before using the roller, check all bolted joints and retighten them
if necessary.
