7 . ACCESSORIES AND OPTIONS
7.93
7
DANGER: Operate the external controls with
care, keeping a safe distance from the lift
arms.
Apply the following procedure before use:
Before using the external controls, activate the Joystick (in-
dicator light 2 Fig. 231 off) and move the linkage switch to
neutral or lower position.
After each use of the external controls the Joystick is
locked (indicator light fixed on).
To use the cab controls again, the Joystick must be activat-
ed (indicator light off).
NOTE: The external controls do not operate if the Joy-
stick is not activated after starting the tractor.
If they are moved all the same, the linkage switches to
safety mode (indicator light flashes) and the engine must
be restarted.
The oil outlets 4 (Fig. 233) are controlled by the spool valve
control located in the cab, and have the same characteris-
tics as those used at the rear.
7.15.3 - Loads allowed on the front axle beam
The load allowed on the tractor is limited by the following
two factors:
1. Axle beam
2. Tyres.
Using a long heavy implement can cause an overload on
the front axle.
The loads allowed on the front axle beam should be com-
plied with. To measure the maximum load allowed by the
front axle, place the front axle on a scale, lift the front im-
plement and lower the rear implement.
Nominal loads allowed on the front axle (suspended or not)
depending on models:
IMPORTANT: A front implement weighing one ton
overloads the axle by more than one ton due to chassis
frame overhang (allow on average 1.5 times the
weight). The wheelbase length is usually double the
implement overhang.
7.15.3.1 - Load allowed by the tyres
The load allowed by the tyres depends on their inflation
pressure, maximum travel speed and the torque to be
transmitted. In general, the greater the load the tyre must
support, the greater its volume should be.
IMPORTANT: This is the most common factor limiting
front axle capacity. Tyre manufacturers offer charts
detailing loads allowed for a tyre type depending on
operating conditions. Failure to respect these limits can
lead to tyre damage, an unstable machine, and poorer
performance.
Examples for standard agricultural tyres:
Fig. 233
4
Z2-402-03-04
Model
Load
MT525B
3,000 kg
535B / 545B
3,400 kg
MT 555B / MT 565B / MT575B
4,600 kg
Dimension
Tyre
Load on
axle
beam
Pressure
Speed
14.9R24
3 T
1.4 bar
40 kph
480/65R28
4.5 T
1.6 bar
40 kph
Содержание Techstar CVT MT525B Series
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