Start-up
D
Tractor control
- To be checked :
• 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.
• Is the authorised linkage weight sufficient?
All of this information can be found on the registration papers, or on the data plate and in the tractor manual.
F
IGURES THAT YOU SHOULD KNOW
P
Kg
Unladen weight of tractor
P1
Kg
Weight on the front axle when the tractor is empty
P2
Kg
Weight on the rear axle when the tractor is empty
M2
Kg
Total weight with machine attached to rear
M1
Kg
Total weight of front ballast
Distance between the centre of gravity of the front ballast
a
m
and the centre of the front axle
b
m
Wheelbase of tractor
Distance between the lower linkage pins and the centre of
c
m
the rear axle.
Distance between the lower linkage pins and the centre of
d
m
gravity of the machine.
M1 mini = Calculation of the minimum ballast need in front.
Pc = Calculation of the total weight of the unit (tractor + machine)
P1c
P2c
Pc
- Complete the table below:
- Check that:
• The values calculated should be < or = to the tractor's permissible values and the values for
the tyres fitted to the tractor.
• It is essential that the minimum load on the front axle is > or = to 20% of the unladen tractor
weight.
T
HE MACHINE MUST NOT BE HITCHED TO A TRACTOR IF
The total weight calculated is > than the maximum authorised weight.
The weight on the front axle is < than the minimum required.
-
Values
calculated
:
Consult the tractor's instruction manual or the regis-
tration documents.
Consult the machine's technical characteristics. (see
section
5
"Characteristics").
Consult the technical characteristics of the tractor
and the front ballast, or measure.
Consult the instruction manual or the tractor's regis-
tration documents, or measure.
Consult the instruction manual or the tractor's regis-
tration documents, or measure.
Consult the technical characteristics of the machine.
(see section
5
"Charactéristics").
P1c = Calculation of the weight on the front axle
P2c = Calculation of the weight on the rear axle
Tractor's
permissible values
EN
Values permissible with
the tyres that are
fitted to the tractor
1
19