Bobcat 743 hydraulic

[mikkis123]

Hi, i am new here, and i am from Finland, and sorry my bad english I have 743, sn: 501944632 First ask, should my 743 have bronze filters / case drain filters somewhere? I have looked everywhere, but cant find them. And second, hydraulic leak from hydraulic control valve when oil is warm, upper spool. I replaced quad rings (original parts), two times but still leaking from back end of spool, i inspected spool, but it looks fine, no scratches and nothing, should i buy new spool and try that, or what?

 

[Tazza]

Firstly, your english is fine, i have seen worse english from someone thats first language is english
The 743 did not have case drain filters, the 743B and onwards did.
As for the leak, i really don't know. Quad rings can't be put in backwards, so i don't know why it leaks still.