17
1
1
GB
Start-up
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.
- 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.
The 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.
C
F
IGURES THAT YOU SHOULD KNOW
P
(kg)
Unladen weight of tractor
P
1
(kg)
Weight on the front axle when the tractor is empty
P
2
(kg)
Weight on the rear axle when the tractor is empty
M
2
(kg)
Total weight with machine attached to rear
M
1
(kg)
Total weight of front ballast
a
(m)
Distance between the centre of gravity of the
front ballast and the centre of the front axle
b
(m)
Wheelbase of tractor
c
(m)
Distance between the lower linkage pins
and the centre of the rear axle.
d
(m)
Distance between the lower linkage pins
and the centre of gravity of the machine.
M
1 mini
= Calculation of the minimum ballast need in front.
P
1
c
= Calculation of the weight on the front axle
P
c
= Calculation of the total weight of the unit (t machine)
P
2
c
= Calculation of the weight on the rear axle
V
ALUES
T
RACTOR
’
S
V
ALUES PERMISSIBLE WITH
CALCULATED
PERMISSIBLE VALUES
THE TYRES THAT ARE
FITTED TO THE TRACTOR
P
1c
P
2c
P
c
Consult the tractor’s instruction manual or the
registration documents.
Consult the machine’s technical characteristics.
(see section
“Characteristics”).
5
Consult the technical characteristics of the tractor
and the front ballast, or measure.
Consult the instruction manual or the tractor’s
registration documents, or measure.
Consult the technical characteristics of the
machine. (see section
“Charactéristics”).
5
Consult the instruction manual or the tractor’s
registration documents, or measure.
