Rabe COMBIBIRD CB, Operator'S Manual

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- 18 - RA_MA_DI_COMBIBIRD_CB_1510_EN
- 11/15
O
peratOr
'
s manual
COmBIBIrD CB
fOlDIng semI
-
mOunteD versIOn
4 p
reparIng The TracTor
4.1 Required tractive power
The power required to tow your implement varies according to
the soil texture, the working conditions and the tractor equipment
(tyres, front ballast, etc.).
The following technical specifications are provided as a guide.
For additional information, consult your dealer.
Number of discs Working width (m) Tractor Power (HP)
32 4.00 300
40 5.00 380
48 6.00 450
4.2 Tractor wheels
4.2.1 Tractor tyres
Check the general condition and the pressure of the tractor tyres
(refer to the tractor operator's manual). The pressure must be
identical on both sides of the tractor to ensure that the implement
is level.
i
IMPORTANT:
Inflate the tyres to the pressures specified by the
manufacturer.
4.3 Ballasting the tractor
The implements hitched to the front and rear of the tractor may
not exceed the total permissible load, the permissible axle loads
and the tyre specifications.
It is essential that the tractor's front axle is able to support at
least 20% of the tractor's dead weight. If necessary, ballast your
tractor.
Before driving on the road, always make sure that the tractor is
not overloaded and that it is suitable for the hitched implement.
- Specifications for calculation:
i
IMPORTANT:
Weights are stated in kilograms (kg), lengths in
metres (m).
a b c d
W
F
W
R
L
r
L
f
Legend
We Tractor dead weight
Lf Front lifting capacity of unladen tractor
Lr Rear lifting capacity of unladen tractor
Wf Total weight of tractor and equipment hitched to front
Wr Total weight of tractor and equipment hitched to rear
a Distance between centre of gravity of front-mounted implement
and the front bearing axle
b Tractor wheelbase
c Distance from the centre of the rear axle to the centre of the
draw bar
d Distance between the centre of the d raw bar and the centre of
gravity of the hitched implement
x Manufacturer specifications for tractor for minimum rear
ballasting. If no weights specified, apply a coefficient of 0.45
Formulae and calculation method
∙
The method of calculation of the minimum front ballast for a
tool hitched to the rear: enter the result in the table.
∙ Method of calculating the minimum rear ballast for a heavy
tool hitched to the front: enter the result in the table.
∙
Description of load acting on the axle:
enter the value for the
effective load on the front axle and the permissible weight
obtained from the tractor operator's manual.
∙
Calculate the total actual weight: enter the value for the
effective total weight and the permissible weight obtained from
the tractor operator's manual.
∙ Calculating the effective load on the rear axle: enter the value
for the effective load on the rear axle and the permissible load
on the rear axle obtained from the tractor operator's manual.
Actual
values
Permissible
values
Values
x2 the
permissible
capacity of
the tyres
Min. ballasting
Front/Rear
Kg
Total weight
Kg
≤
Kg
Front lifting
capacity
Kg
≤
Kg
≤
Kg
Rear lifting
capacity
Kg
≤
Kg
≤
Kg
The results must be lower than or equal to the permissible
values.