Loadall problem

[Sprayer 1]

When I tried to start the loadall this morning ,it turned over for a while without starting , then everything shut off. No power to the ignition. I checked the battery terminals, and the fues from the battery ,all seemed OK. Has this happened to anyone, where should I look next? It is a 2002 , 535/95.
Any advice appreciated

 

[Cropper]

Try wiggling the battery isolator switch?

 

[Agriimark]

Try the relays under the side of the dash board. try a new one and keep changing it to see if one is playing up. 5 in total if i remember correctly. battery leads clean and tight, and like cropper said isolator switch.

 

[Sprayer 1]

Think I've narrowed it down to a bad earth , if I put a jump lead to battery and other end to chassis, it starts, so next question is ,where is the earth lead bolted to the chassis on these machines?

 

[ACEngineering]

Think I've narrowed it down to a bad earth , if I put a jump lead to battery and other end to chassis, it starts, so next question is ,where is the earth lead bolted to the chassis on these machines?

I think most go direct from battery to starter motor, but there will be a earth lead between cab and chassis aswell.