4430 hyd creep

[stoneridge]

have a new to me 4430, swapped out the JD hyd couplers for pioneer.
now when I have it on 567 baler the hyd won't hold the door closed, and it will actually creep open.
when I use loader with same valves the tilt won't hold either.

did I miss something in swap or is it further up the line in the hyd pump?

could it be a linkage problem to the levers in cab? seems slow when you go to the stop on lever but speeds up if you back off lever just a bit.

I got pioneer parts new from deere dealer.

 

[D-]

Couplers have nothing to do with it unless they are dripping oil.
You have some valves gone bad. Plug in a gauge to see which/how many.

 

[tim s]

Yes it is a poppet valve leaking past, there are 4 of them in your valve,, If you want to ship it to me I can
re-build it and bench test it for you with improved seals..

 

[stoneridge]

wouldn't all that be new?
I replaced all the insides of the valves with the pioneer parts.

All 3 scv are doing the same thing.

 

[tim s]

No, you have replaced the couplers, but you haven't been into the poppets yet, and that is where the issue
is...