Ac d17 series 3 lift arms down speed

I guess, yes. What exactly are you doing that causes you to complain??  A "rate-of-drop" valve could be installed in-line to adjust oil return to the sump while not affecting raise speed.

That adjustment screw only works when using the Traction Booster system, like on a mounted plow. If you've ever plowed, the plow still drops like a brick at the end of the field. That speed drop adjustment screw keeps the hand lever at the top of the bottom window and meters the return oil when the TBoost system is releasing the lift pressure. Early model D-17's did not have this, and the performance of the weight transfer system was lacking. So,this feature had to be created and works well if it is adjusted correctly.     EDIT: I've never tried this but maybe it could work. If you screw that speed adjustment screw "in" (clockwise) as far as it will go, maybe the lift/lower lever stroke would be altered enough to where the hold valve plunger releases up higher into the mid-range of the levers stroke. Then, your hand could better control drop speed. Try it.

Edited by DrAllis - 07 Nov 2025 at 8:21pm

so how well will it work when their is 1/8 of an inch of slop in every conection from the snap coupler bell to the pump and quadrant wich equals about a third of the quadrat before the tail end of it reacts  

After further investigation, I’ve noticed this only happens if the lift is raised all the way up. Anything less than all the way up you can raise it slow. You can let it down slow but once you go all the way up then it is much harder to get it to release to go down then it drops like a concrete block.

All I am doing is maintenance that was neglected. I purchased the tractor about a month ago. I you asked what I was doing actually nothing just changing all fluids greasing all joints rebuild carb then I noticed even with nothing on lift arms if you raise all the way up max it seems to put the hydraulic under severe pressure and you have to really pull hard to get it to release. I am not leaving the lift control in raised position it just happens if it goes all the way up. Sorry if I didn’t explain it very well.

He said "drops like a hammer". I assumed he meant the implement or lift arms dropped like a hammer. I guess not.............. I think Mr. VWcountry needs to actually connect an implement or hang a plow on the lift arms and operate the hydraulic system for a while and get the "feel" of what really happens.

Edited by DrAllis - 13 hours 48 minutes ago at 7:39pm