5045D John deere rock arm don't lift up...

[gajen]

hi Sir i have 5045D John deere Tractor .. The problem is when i start the machine rock arm lift up slowly @ 500 or 600 RPM after one minute or try to lift up 2nd time it never rise up so i need to increase RPM to 1500 or upper after one hour work it hesitate to lift up .. i changed hydraulic pump but no improvement .. some times it don't lift down so i just increase the RPM to lift down .. give me a solution sir

Thanks in Advance

 

[tthopskin@yahoo.ca]

i have no idea what it could be ..hope you get it figured out

 

[vtsnowedin]

Been there. All it takes is a blown O ring inside the case that lets pressure blow by. A trip to your dealers shop is the fastest and best fix.

 

[Tx Jim]

Welcome to TBN
No or slow raising 3 pt sounds as if rockshaft piston is leaking

 

[gajen]

Need to adjust hydraulic relief pressure valve ? .. @ Tx Jim ya piston seal also little damage .. passed 2100 Hours with heavy PTO works ..