Hydraulics

Hydraulic controls on Advance models

The ancillary hydraulics on Advance models are controlled conveniently and efficiently using the joystick and push buttons located on the new ergonomic armrest. The joystick can also be used to control the front loader. Due to the proportional joystick control and electronically controlled hydraulic valves, tractor and implement functions can be adjusted with extreme precision.

The maximum capacity of the hydraulics is extremely high: 115 l/min (200 bar), which can be programmed according to flow and timing. The load-sensing hydraulics on Advance models meet all the requirements of the latest implements and implement combinations. The 100% electronic control of the ancillary hydraulics is a feature unique to Valtra.

Papildus hidraulikas vārsti:

• Standarta 2 un 1 ieslēgšanas/izslēgšanas vārsts
• Pēc izvēles 2 vai 3 papildus hidraulikas vārsti aizmugurē, plus 1 ieslēgšanas/izslēgšanas vārsts
• Maksimālais vārstu skaits uz aizmuguri ir 5 + 2 ieslēgšanas/izslēgšanas vārsti un uz priekšu 3 vārsti, izmantojot frontālo iekrāvēju vai pacēlāju.

Standartā ieslēgšanas/izslēgšanas vārstiem izmanto ātrās savienošanas savienojumus, un pēc izvēles tos ar caurulēm uzreiz var savienot ar agregātu.

Slodzes sensoru sistēma ļauj vārstiem piegādāt tieši tik daudz eļļas, cik patērē konkrētais agregāts, atstājot atlikušo eļļas daudzumu citiem vārstiem un sakabei. Tas ļauj vienlaicīgi darbināt hidraulikas vārstus un sakabi, kā to prasa mūsdienu agregāti. Visi vārsti aprīkoti ar peldošo režīmu, kas ļauj apstrādāt zemi pēc tās kontūrām.

Lai nodrošinātu augstāko iespējamo plūsmas ražību, hidraulikas dalītājs var tikt uzstādīts sistēmas aizmugurē.

Auxiliary hydraulic controls on Classic and Hitech models

In Classic and HiTech models, the auxiliary hydraulics are controlled by levers located on the right hand panel. Oil output is 73 litres per minute. Three valves come as standard with a fourth as an option. The armrest pictured here features a joystick for controlling the front loader.

Valtra Autocontrol

Operating Valtra’s electronically controlled Autocontrol linkage is easy, and all operations can be carried out from inside the cab. The switches and buttons for Classic and HiTech models are located in the side panel, while for Advance models they are located in the driver’s armrest. Drive Balance Control comes as standard with the linkage. Autocontrol combined with wheel slip control is standard on the Advance T151e-T191 models and optional on Classic and HiTech models. Note: Autocontrol D (ACD) is similar to Autocontrol B (ACB) but also includes slip control by radar.

1. Autocontrol lift and lower switch
2. Position of lower links, including a float position
3. Dump switch. Temporary position control override
4. Linkage lift with raise, lower and neutral
5. Control of speed of lowering the links
6. Control of maximum height of links
7. Control for position control and draft control
8. Drive Balance Control
9. Slip Control ACD on/off

Drive balance control

Drive Balance Control is a standard feature of Autocontrol. When engaged, this system works like a shock absorber when carrying heavy implements on the linkage over uneven ground. The system senses the variations in dynamic loading and automatically makes corrections to even out the bumps.

Drive Balance Control operates only in the transport position. The system begins to work when the factory adjusted 8 km/h limit is exceeded. The limit is adjustable in Autocontrol ACD; in ACB the function starts as soon as the tractor is moving.

Benefits:

• Driving the tractor is more even and stable
• Improves the ground contact of front wheels for safer steering
• Reduces high stress loads imposed by heavy implements in transport

U-Pilot

Valtra’s U-Pilot Headland Management System significantly reduces the amount of work needed to turn around repeatedly in the headland. This helps to keep the driver more alert and makes turning around faster. The system also reduces the risk of human error when managing so many functions. The Off/On/Rec switch is situated in the B pillar, while the Start/Stop switch is in the driver’s armrest. The display is in the instrument cluster.

Tractor operations controlled by U-Pilot:

• three-point linkage
• two ancillary hydraulics valves (3 and 4)
• 4WD
• differential lock
• PTO (front/rear)
• cruise control
• Powershift
• DIN electrical connectors

A pause can also be programmed into the system. When storing the programme, the distance travelled by the tractor is registered, according to which the operations are timed.

New armrest

The joystick on the driver’s armrest is used for controlling valves 1 and 2 of the ancillary hydraulics and may also be used to operate the front loader or linkage. Most of the ancillary hydraulic system can be activated using the armrest’s joystick, switches and buttons. The linear switches in the armrest are used to control valves 3, 4 and 5, as well as the third valve in the front.

The ancillary hydraulics selection switch is conveniently situated in the armrest:

1. Flow adjusted for small output
2. Flow adjusted for medium output
3. Flow adjusted for high output
4. Operator Adjustable - 3 memory places (M1, M2, M3)