574d lift hic-up problems

the lift on my 574 d "hic-ups" when under load. i have changed hyd oil and filter...no change. it does this worse when the oil gets hot. according to the repair manual it could be a scored cylinder or ring problem, a cylinder cushion valve leaking, or a drop poppet issue. cushion valve is under the seat in the top cover. i have a dimantled 648 in my shop that i was "exploring" before i take the 574 apart, and the cushion valve does not come right out. it appears to be in a threaded bore but will only turn about 1 full turn. is there a procedure i am not doing or do i need special tools? the repair manual does not say. any help would be appreciated.
Thanks, Jonathan
 
I can"t answer your question, but my advice is not to lift scallop dredeges with your tractor. I can"t think of another reason for a tractor to be in Wanchese.

Good luck on the problem, man!
 
where are you from wcroom? it may surprise you just how many tractors there are in wanchese. i would guess several hundred. it is funny what you said about lifting dredges......i used to move my dredge around with that 574....but not on the lift....it weighed approx 30,000lbs. it was a funny site going up the road.....made the hwy patrol mad too cause they couldnt ticket me....
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top