Hawg Rider
New member
I have a 1998 JD 4100 Gear tractor and the hydraulics aren't working all the time. The first time the 3 point wouldn't come up I took it back to the dealer. They replaced the rock shaft and things worked fine for a while then started acting up again. I bought the O-ring kit and replaced all those as the dealer suggested. That worked for a while then had the same issue. I replace the rock shaft again and replaced all the O- rings again and am still having the same issue. The filter screen has been checked and cleaned every time I have worked on it and I have only put in JD hydraulic fluid. Tractor has been serviced every spring since I bought it in 98. Only has 1000 hours on it. I have talked to 3 different Deere dealers service managers and none of them can point me in a direction to solve this problem. Any help will be greatly appreciated.