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Avant la mise en route / Before start-up / Vorbemerkungen
C
C
alCulation oF the load on the Front axle
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 linkage.
• The permissible load 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.
The 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
u
kg
w
F
kg
al
r
kg
al
F
kg
rb
l
kg
t
m
a
1
m
a
2
m
a
m
b
m
C
The method on the previous page will enable you to complete the table below.
m
Frb (min) =
inimum Front ballaSt
t
otal weight
F
Fal (tot) =
ront axle load
r
Ral (tot) =
ear axle load
Unladen weight of tractor
Weight on the front axle when the tractor is empty
Weight on the rear axle when the tractor is empty
Front ballast (if present)
Load transfer of the towed machine
Distance between the centre of gravity of the front
implement or ballast and the centre of the front axle
(total of a1 + a2)
Distance between the centre of the front axle
and the centre point of the front lower linkage arms
Distance between the centre point of the front lower
linkage arms and the centre of gravity
of the front implement or ballast
Wheelbase of tractor
Distance between the centre of the rear axle
and the centre point of the front lower linkage arms
a
Ctual value
obtained via the
CalCulation
less than or
W (tot) =
less than or
less than or
a
uthoriSed value
aCCording
to the manual
or regiStration
doCumentS
equal to
equal to
equal to
Cf the tractor's registration documents
or its instruction manual
Cf ballast characteristics
Cf 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 instruction manual
l
oad Carrying CaPaCity
2
oF the
tyreS on eaCh axle
less than or
equal to
less than or
equal to
1
EN
23
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