Valtra T series Versu, Руководство оператора, Страница: 125 / 450

The operator can observe the air pressure in the whole air pressure system on
the gauge.
The suspension system has two air suspension bellows and two shock
absorbers.
3.8.18 AutoComfort cab suspension
AutoComfort cab suspension is a semi-active system that controls the cab
suspension automatically.
The AutoComfort cab suspension system is extra equipment.
The AutoComfort system adjusts the damping automatically based on:
•
Unevenness of the driving surface
• Driving speed
• Change of the Powershift gear
• Position of the power shuttle lever
• Braking
• Front axle movement
3.8.19 Differential lock
3.8.19.1 Differential lock
The differential lock is used to ensure an even grip for the wheels by locking the
rear wheels to rotate at the same speed. The differential lock can be engaged
while driving.
The differential lock has three positions: ON, AUTO and OFF.
ON The differential lock is always engaged except when:
• One or both brake pedals are pressed (the lock re-engages when one or both pedals are
released).
• When engaging the parking brake.
AUTO The differential lock engages when the following conditions are fulfilled:
• The rear wheel slip is more than 7%, and
• The driving speed is over 0.3 km/h but under 15 km/h, and
• The wheels are in the middle position.
If the tractor is equipped with steering angle sensor, the differential lock disengages:
• When pressing one or both brake pedals.
• When pressing the clutch pedal.
• When the rear wheel slip is less than 6%. The disengaging delay is 5 seconds.
• When pressing the lift/stop/lower switch to the lift position.
• When the driving speed rises to over 15 km/h.
• When the wheels are turned more than 20% from the middle position.
If the tractor is not equipped with steering angle sensor, the differential lock disengages:
• When pressing one or both brake pedals.
• When pressing the clutch pedal.
• When the rear wheel slip is less than 6%. The disengaging delay is 5 seconds.
• When pressing the lift/stop/lower switch to the lift position.
• When the driving speed rises to over 15 km/h.
3. Operation
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