DLTTrekkers
Veteran Member
Uncouple your powersteering and test your hidge. This test wil let you know if the probleme disappeare ?
Problems with 3 point hitch IH 424
- Thread starter espotony
- Start date
- Views: 21151
First of all, I want to thank DLTTrekkers for pointing me in the right direction. You were absolutely ON THE MARK!! For all who might have followed this thread, I would like to post the actual solution, so that others may learn from my mistakes. The original problem was that the lift was hiccuping, that is, it would raise the load, then let it down a few inches, then raise it again, repeating this cycle endlessly. On the first disassembly, we found a very small crack in the plastic piston ring, which we thought might be responsible for the problem. We also disassembled the thermo relief valve and cleaned and checked it. And there was the problem, which we created ourselves. When we reassembled the relief valve, we put in the ball follower backwards. It was an honest mistake, because the follower had a shoulder which fit nicely inside the spring. The result of this backward assembly was that the ball had no pressure on it, so the relief valve was always open. This produced the exact same symptoms as before the repair, but from a completely different cause. All the subsequent work, all the new parts and all the o-rings, not to mention the time spent worrying over this and the endless internet searches were for naught. Following DLTTrekkers advice, we took it apart one more time, expecting to find a failed piston ring, a minute crack in the piston or the cylinder or some other issue we had missed. We were very careful and looked at EVERYTHING critically. If the isolator valve was shut and the lift lowered after the tractor was shut down, the cause HAD to be in the cylinder. We took apart the relief valve one more time and then it hit us that if the follower was installed backwards, the ball had no pressure to hold the valve shut and so the relief valve was always open. We verified our guess by consulting a picture in the manual. Well, the hitch is rock-solid once again. My thanks to all who helped out on this. Remember that you can make your own problems. Not every problem is caused by a failed part. Sometimes we are our own worst enemies.
DLTTrekkers
Veteran Member
After reading throu your first post and not seeing anything about the lowering valve ...that was my first response...then I start thinking about a bouldin mistake . I am glad your tractor is as good as new !
DLTTrekkers
Veteran Member
And this coming from my country...sunny South Africa at the southern tip of Africa
