John Deere 4620 Problems

I have a JD 4620 and the Sighting does not stay on, what can I do? Most of the time it turns on and in a few seconds it is disconnected.

I have a john deere 4620 (no turbo). It was working perfectly and then when running while stopped with the plow in the field, the idle was completely maxxed out.

I am trying to change a PTO gasket on my JD 4620. I thought the bearing shank would slide on the PTO shaft. I have removed the bolts from the shank and

I have a 4620 with long shafts and I removed about 4 inches on each side with a demo saw. I cut mine but had no other choice. We were ready to start cutting

My 4620 jd loses its hydraulics when I press the clutch. I know if it lasts too long it is the nature of the beast. but it has reached the point that in

The one I’m working on has added the starter rubbing (I think) on the flywheel, and the TDC mark is gone. I thought I had found something but the

I have a syncro 4620 that as soon as I turn the engine off, I can hear all the hydraulic fluid draining from the front reservoir back to the filter relief valve.

20 years ago I do not take a grid from the sink. What I do not remember is if they are covered inside or outside. I have a 4620 that had not worked for

71 JD 4620 Pwr Shift PTO problem. With the engine running, can the PTO shaft rotate freely or not? The PTO will not engage and last time I used it I thought

Several years ago, I installed 3 Games of ISO couplers conversion kits in a 4620. Originally, it had “O” rings with nylon backing rings on