Price range: $1,346.1 through $1,404.6 + VAT
Developed and tested by members of the AgOpenGPS community. There are no development costs, as it is produced in a small-scale manufactory. Solutions are available for almost every tractor. Today, hundreds of units are in operation worldwide.
Warning: Designing a hydraulic steering control involves modifying one of the tractor’s primary systems. It has been reviewed by several engineers; if it does not receive power – meaning the AgOpen main switch is turned off – it theoretically cannot interfere with the steering. There have been no negative safety experiences to date. Regardless, everyone uses it at their own risk.
To select the appropriate hydraulic valve block (OC or LS) for your autosteer kit, check the tractor’s steering orbitrol unit. Orbit: the hydraulic block located at the “far” end of the steering shaft. No electricity flows into it.
Count the number of hydraulic lines connected to it:
| System Type | Meaning | How to Decide / Identification | Function and Features |
|---|---|---|---|
| OC | Open Center | Check the steering orbitrol. An OC system is generally identified by 4 hydraulic lines connected to the orbitrol. | This is an older, simpler design that typically uses a fixed-displacement pump. When the steering wheel is in its center (neutral) position, oil flows continuously through the valve and back to the tank. |
| LS | Load Sensing | Check the steering orbitrol. An LS system is identified by an extra, fifth hydraulic line. This fifth branch is the dedicated Load Sensing signal line. * | This is a more modern and energy-efficient system, typically using a variable-displacement pump. The pump only delivers oil when the system actually needs it, controlled by the extra load-sensing (LS) line. |
| LS 60l Universal | Load Sensing (High Power) | Check the orbitrol, as well as the tractor’s horsepower and model. Choose this if the tractor’s power is more than 220 HP, and/or if the machine is a Fendt model equipped with an LS system. | Operates on the same principle as LS but with higher flow capacity, specifically optimized for high-performance machines and Fendt models. |
*Note for some Fendt tractors: An extra fifth line may be present at the rear implement connectors that is not a Load Sensing (LS) branch – in such cases, you need an OC valve. This fifth line often serves as a Case Drain or a trailer brake line. It is crucial to accurately identify the function of each branch for your specific tractor model, as the LS line is specifically designed to control the pump flow.
Additional complexity: The autosteer valve block must match the behavior of the LS signal line:
| Weight | N/A |
|---|---|
| type | OC, LS, LS 60l universal |
To ensure you select the correct adapter, the most reliable method is to remove the steering wheel and measure the diameter of the splined shaft, as shown in the image.
In most cases, the spline count is 36; therefore, the diameter is the determining factor. Based on our experience, dimensions are consistent across certain brands.
Models for which the data in the table below are highly reliable:
John Deere and newer machines from the CNH Group: A+
Claas and Massey Ferguson: N
| Adapter Model | Tractor Brands & Models | Adapters teeth no. | Adapters size |
|---|---|---|---|
|
A+ |
CNH group newer:
|
36 |
21.8-22.1 |
|
D |
|
36 |
20.4 |
|
K |
|
36 |
17.8 |
|
N |
|
36 |
15.8 |
|
B |
|
36 |
18.2 |
|
W |
|
36 |
18.5 |
|
F |
|
single key |
24.5 |
|
NH40 |
older ones:
|
40 |
17.7 |
|
T |
|
18 |
15.45 |
|
G |
RARE:
|
36 |
15.6 |
|
C |
|
single key (conical) |
23.33-25.4 |
|
BENZ- 72S |
|
72 |
23.5 |
Add an external 4G router to your kit if:
