Hydraulics squealing when I float the bucket
- Thread starter Blstr88
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Leejohn
Elite Member
Are you sure the boom is on the #2 spool that has the float. The other valves have #1 spool with the float.
The valve I bought from surplus was never installed - I never took the factory valve off the tractor. I just scavenged the joystick parts off the new valve to use on the factory one.
The bucket is functioning correctly, lifting/lowering and curling as it always has, so the hoses must be hooked up correctly.
The bucket is functioning correctly, lifting/lowering and curling as it always has, so the hoses must be hooked up correctly.
oldnslo
Super Member
Blstr88
Did the float function work properly prior to the linkage breaking? If yes then I would suspect something is preventing the spool from shifting fully into float position.
Did the float function work properly prior to the linkage breaking? If yes then I would suspect something is preventing the spool from shifting fully into float position.
Yes. The linkage broke, so I removed the boot/joystick parts and continued to use it for another few weeks just pushing/pulling on the valves by hand. It was while the joystick was off of it that it started doing this.
Yes it does seem like its clicking into float but not going fully into float.
Xfaxman
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With the snow blower off, raise the lift arms all the way. When they stop moving up you should hear the squeal and the engine should slow slightly. As soon as it squeals put it in float. It should lower slowly. Does it squeal right away or when it gets to full down? Does the squeal sound the same as full up?
Ok, so I did what you suggested. I raised the bucket all the way and at the very top when it stopped, as long as I held the joystick down...it squealed, yes.
When I put it into float it begins squealing again as the bucket slowly lowers to the ground. It squeals the whole way down, the bucket contacts the ground and appears to be floating correctly, and it continues squealing until I take it out of float.
And yes, the squeal at full up and the squeal while it floats down sound the same. I took a video...if I can figure out where to host it I'll post that up.
RNeumann
Elite Member
If the squealing is the same noise it’s the bypass “bypassing” fluid which makes the noise. If that noise is happening in float maybe fluid is being forced to bypass instead of using the return.......in other words it isn’t dumping the fluid back through the return. Someone who knows more about spools should weigh in but I assume a disassembly and inspection of that spool would be in order.
aczlan
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Did you try the fittings? If I remember correctly, SAE and some banjo bolts are interchangeable.
It certainly sounds like a control valve problem, a very strange one though.
I would probably start with putting a pressure gauge inline with the circuit that has float or on the pressure input to the valve and see what kind of pressures you are getting when you put it into float.
Aaron Z
davedj1
Veteran Member
I don't think you are getting the valve pushed all the way into the actual float portion. Just my humble .02
Is it possible the linkage isn't pushing it in far enough? Or could something have gotten in there?
Is it possible the linkage isn't pushing it in far enough? Or could something have gotten in there?