JCB 801 Slew Fault

[Matador]

Hi i have just joined hoping to find some help to identify the fault with my 1998 801 Mini Digger I’ve had for 15yrs, over a period of time I’ve noticed the slew get slower. Never had a lot of power in the slew. All the other leaver functions work and machine has power. The blade will not level the machine (however if you use the bucket to lift the machine and then set the blade, this will hold pressure and keep machine level). Possible they are both linked. When the machine gets warm the slew slows even more. I did a hydraulic oil change recently and this has helped.

Has anyone come across this before & can suggest where to look / investigate . Feel free to ask for more details.

Thanks in advance mark

 

[Mick-the-fitter]

P3 pump or ARV

 

[Matador]

P3 pump or ARV

I’ve noticed a pressure port on the pump which I could pressure check, do you know what the pressure should be ? is there a specific method to check the pressure ?

Also the right hand control leaver when warm shacks, you just have to touch it to stop it. This has only started since the slew has slowed. What would your thoughts be on this ?

Thanks mark

 

[Mick-the-fitter]

Blocked pilot filter/s, yep tee in to the test point on the pump, let me know what pressure are getting.