JCB 130 Excavator

[Captain Kirby]

Issue with machine not starting unless we jam throttle half open but none of the levers work any hydraulics have fitted new solenoid but the same
Any ideas

 

[Agriimark]

Issue with machine not starting unless we jam throttle half open but none of the levers work any hydraulics have fitted new solenoid but the same
Any ideas

Check the aux hydraulic line isn't engaged. A mate had an issue with his where it wouldn't start and it was the aux pedal had gone stiff and had been pushed down pulled it back to neutral and that cured the starting issue

 

[Captain Kirby]

Where is the aux pedal ?

 

[Rma7810]

Check the alternator fuse ,under the starter solenoid cover or make sure you have +24 v at

 

[Agriimark]

Rh foot pedal and servo. What year is it

 

[shumungus]

Has all the symptoms of stuck safety switch.

 

[Captain Kirby]

It is a Js130 2003

 

[Agriimark]

your safety circuit may not be working also. You will ether have a bad relay or switch, or solenoid that is burnt out or out of adjustment. It controls the servo oil to your levers and why it may be not working. I would check the switch in the cab that you would normally activate for the hydraulics to work. Check all fuses for proper condition, check your relay box for something with a lock symbol for identification or hydraulic symbol.

 

[Captain Kirby]

Thanks for all tips will try and report back

 

[Zebbedee]

Alternator would be my first check you are looking for near 28v at battery when running at half revs or thereabouts

 

[Andrew1983]

Had similar issue with our JZ 70, started with intermittent starting issue. Then it started just loosing all function as if the safety lever was up. Mechanic first off all fitted new batteries, then an isolator switch when the starting issues continued. Then when I told him about the loss of function (I was questioning was the alternator faulty) he came up with changing the fan belt. That cured it. It was slipping at times causing low volts. Worth a try, the old one didn’t look bad to me but has certainly fixed the problems.

 

[Captain Kirby]

Changed belt made no difference only starts when push the solenoid and hold it in must be some electrical issue