This is how we went about adapting the orbital valve to the steernig shaft. In the first two pic is the splined part of the john deere steering wheel with a plate machined, welded and then machined again onto it. the third pic show it mounted on the valve. The fourth and fifth pictures show the 'adapter plate'. This bolts to the splined piece on the orbital valve, and also to the steering shaft. The last couple pics show how it all bolts together.

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