Clayton 4105 steering playing up

[robin banks]

Hi my Clayton 4105 with knight sprayer has for the last 3 years I have had it been faultless with the steering. Sprayed a field last week then yesterday started it and no 4 wheel steer. It self centres for front wheel steering on road. But when I put it in to 4 wheel steer nothing happened then tried it in crab steer and it kind of worked 1 way but wouldn't straighten up. Put it back to 2 wheel steer and it self centred.
Before I start pulling apart. Where should I first look

 

[Grass And Grain]

Hi my Clayton 4105 with knight sprayer has for the last 3 years I have had it been faultless with the steering. Sprayed a field last week then yesterday started it and no 4 wheel steer. It self centres for front wheel steering on road. But when I put it in to 4 wheel steer nothing happened then tried it in crab steer and it kind of worked 1 way but wouldn't straighten up. Put it back to 2 wheel steer and it self centred.
Before I start pulling apart. Where should I first look

Potentiometer on axles?

One of ours gave up a few years back. Suspect water got in when I was pressure washing.

Now have plastic "lids"on ours made from 1 litre plastic containers.

 

[Superted820]

Yep I’d guess potentiometers. On my Multidrive on top of the axle rhs.
Malcolm Carter at Multispares might be able to help with parts. He’s brilliant with my Multidrive.

 

[Nearly]

@Drillman

 

[Drillman]

Yes ours has arosol can lids over the pots on the axles

 

[KB6930]

Which sprayer ? We had one with a Knight on and the steering system was knight not Clayton and was a finicky thing !!

 

[nonemouse]

Which sprayer ? We had one with a Knight on and the steering system was knight not Clayton and was a finicky thing !!

As KB6930 said some Clayton’s sold as knight crusaders have their own steering control system produced by knight which seems more complex Clayton’s own system. I have one of each

 

[defender]

I can tell you its more than a little bit scary when the back axle goes in to crab mode at 40k
There are also diodes under the control panel (in the side door ) and the switch itself can go wrong
Had to fit an isolator after the above incident

 

[Drillman]

I can tell you its more than a little bit scary when the back axle goes in to crab mode at 40k
There are also diodes under the control panel (in the side door ) and the switch itself can go wrong
Had to fit an isolator after the above incident

Always put ours in 2ws on the road

 

[defender]

I don't have anything to do with Claytons now , but it was supposed to be in 2ws when it cribbed,
Very lucky where it happened that it stayed on its wheels
I fitted an isolator switch after that