JD 2520 independent lift

[Piedmont]

I have a couple of rookie questions that I’m sure I can get some help with. First when hooking up the hydraulics for the independent lift do you use the top two hydraulic connections (yellow and silver I believe) or the bottom two. Both lines are color coded yellow so I wasn’t sure.
Second and this may be related to the first, the mmm drops rather quickly when moving the scv and comes up just as abruptly is this normal? On my 2305 it seemed to move much smoother.
I appreciate your input.

 

[jdbower]

My dealer actually installed the hydraulics to the "wrong' SCVs according to the color coding, but it's set up such that pushing forward lowers the deck and pulling back raises it. Since this makes more sense to me I hook it up the same way, but either should work so it's mostly what you're comfortable with.

It is rather violent when at full RPM, but a gentle touch on the joystick or lowering the RPMs helps. The extra flow rate and/or hydro pressure on the 2520 should make the deck raise and lower faster than the 2305.