SKY Agriculture Maxi Drill SW6000 Notice Originale page 19

Before start-up
B Calculation of the load on the front axle
a) Checking the tractor's required characteristics
➪The tractor requirements relate to :
- the total authorised weight
- the permitted weight per axle
- the authorised support weight on the tractor's coupling point
- the permissible load carrying capacity for the tyres fitted to the tractor
All of this information can be found on the data plate or on the registration papers and in the tractor manual.
➪The weight on the tractor's front axle should be at least 20% of the unladen weight of the tractor.
➪
T he tractor must supply the deceleration power (braking) required by the manufacturer when the machine is coupled up to
it.
➪The gross weight of the tractor indicated on the vehicle's registration papers must be greater than the sum of :
- the unladen weight of the tractor
- the ballast
- the total weight of the towed machine
Uw
kg Unladen weight of tractor
Fal
kg Front axle load when the tractor is empty
Ral
kg Rear axle load when the tractor is empty
Frb
kg Front ballast (if present)
Lt
kg Load transfer of the towed machine
Distance between the centre of gravity of the front imple-
a
m ment or ballast and the centre of the front axle (total of a1
+ a2)
Distance between the centre of the front axle and the
a1
m
centre point of the front lower linkage arms
Distance between the centre point of the front lower linka-
a2
m ge arms and the centre of gravity of the front implement
or ballast
b
m Wheelbase of tractor
Distance between the centre of the rear axle and the cent-
c
m
re point of the front lower linkage arms
The method on the previous page will enable you to complete the table below.
m
Frb (min)
inimum front
ballast
t
W (tot) =
otal weight
f
Fal (tot) =
ront axle load
r
Ral (tot) =
ear axle load
a
ctual Value
obtained Via
the calculation
=
less than
or equal to
less than
or equal to
less than
or equal to
Cf the tractor's registration documents or its instructi-
on manual
Cf ballast characteristics
Cf see technical specifications
Cf characteristics of the different elements or measure
cf the tractor's instruction manual or measure
cf characteristics of the different elements or measure
cf the tractor's registration documents or its instructi-
on manual
a
uthorised Value
according to the
manual or registration
documents
less than
or equal to
less than
or equal to
EN
l
oad carrying
2
capacity of the
tyres on each axle
1
17