JD 4520 (2013) Rockshaft Control Lever Lost Friction

[Nashville]

I have a 2013 JD 4520 with 135 hours on it. The lever used to raise and lower 3 point implements has lost friction control. It raises and lowers the implement just fine, and can be stopped and used at an intermediate level using the movable stop. The lever simply has simply lost friction control, which allowed it to be stopped at intermediate levels without using the manual stop. All bolts and nuts connecting it to the three point housing are secure. Any ideas? Thanks!

 

[arlen4720]

There is a friction washer and bolt that needs to be tightened. It's in the control lever linkage. I can't tell you exactly how to get to it, because they are different for the cab and open station models. Take a look at jdparts.com and get look at the parts diagram, and you will see what needs to be tightened.

 

[Tx Jim]

Tighten nut(parts key #14) which is located under dash