Bobcat 331e lost track drive

[Pastie4x4]

I have a bobcat 331e I got with a problem of no tracking one side it will drive with no pressure on it I have replaced the final drive and replaced the rings in the swivel also replaced one of the splice on the hydraulic spool as if I change the pipes over it changes tracks I don’t have a tester to see what the pressures are has anyone got any other ideas

 

[V8Druid]

I have a bobcat 331e I got with a problem of no tracking one side it will drive with no pressure on it I have replaced the final drive and replaced the rings in the swivel also replaced one of the splice on the hydraulic spool as if I change the pipes over it changes tracks I don’t have a tester to see what the pressures are has anyone got any other ideas

damaged/cracked gallery wall in the rotary coupling ...

 

[Pastie4x4]

damaged/cracked gallery wall in the rotary coupling ...

In the swivel?

 

[V8Druid]

In the swivel?

as you've changed the slice, can't see much else it could be??
unless it's the slice next to the one you changed??

 

[Bri963]

It may be the line relief for that circuit that’s gone weak. That would be my first go to before getting more involved, but you do need to get a gauge on the circuit before you go any further. Can you borrow one?

 

[V8Druid]

It may be the line relief for that circuit that’s gone weak. That would be my first go to before getting more involved, but you do need to get a gauge on the circuit before you go any further. Can you borrow one?

good call Bri ... but would it swap sides??

 

[Pastie4x4]

Thank u all so far ill give it a try

 

[Bri963]

good call Bri ... but would it swap sides??

If you swap lines at the valve end, the dodgy line relief will swap sides.

 

[Pastie4x4]

I’ve swapped the pipes at the spool block changing from from one slice to the other drive

 

[V8Druid]

If you swap lines at the valve end, the dodgy line relief will swap sides.

so you're talking about relief valves at the motor end of the lines Bri ? Summat like a CLRV ?
Thought you meant specific circuit PRVs at the block?

 

[Bri963]

so you're talking about relief valves at the motor end of the lines Bri ? Summat like a CLRV ?
Thought you meant specific circuit PRVs at the block?

No mate, talking about in the valve block, assuming that’s how it’s set up. Not PRV’s, line reliefs to protect the valve block from shock loading. All without knowing anything about these machines.

 

[V8Druid]

No mate, talking about in the valve block, assuming that’s how it’s set up. Not PRV’s, line reliefs to protect the valve block from shock loading. All without knowing anything about these machines.

ditto - stab in the dark here too