Loss of thumb

[JWW10]

I have a 2015 310SK. When pivoting the operator seat to use the backhoe, at about the 90 degree position from the front, the auxiliary hydraulic light on the Sealed Switch Module goes out and stays out with the seat in the rear facing position and the thumb doesn’t function. All other backhoe functions work. When the seat is pivoted forward, the auxiliary hydraulic light comes back on at about the 90 degree position and the thumb functions. I replaced the seat rotator switch but nothing changed. Has anyone encountered this problem? I talked with a J-D service technician for 15-20 minutes today and he’s perplexed.

 

[Mike1955]

That’s a new one

 

[JWW10]

That’s a new one

I was hoping it wasn’t . I think the next step is figuring out how the auxiliary hydraulic light is connected with seat position. Thanks for the reply.

 

[Hay Dude]

Here I thought you meant you cut your thumb off your hand lol

 

[oldnslo]

I presume the thumb valve is electrically operated so would look into how the power is supplied to the thumb control vs the seat swivel. Might be as simple as some relay not working but that is 100% pure guesstimate on my part.

 

[JWW10]

Here I thought you meant you cut your thumb off your hand lol

Guess I should have worded it a little better

Here I thought you meant you cut your thumb off your hand lol

I guess I could’ve worded that a little more artfully..

 

[JWW10]

I presume the thumb valve is electrically operated so would look into how the power is supplied to the thumb control vs the seat swivel. Might be as simple as some relay not working but that is 100% pure guesstimate on my part.

Thanks for the input, I’ll check that out. Talked with a different heavy equipment mechanic today and he mentioned something similar, especially checking grounds.