B7100 FEL Question

[Erik Graham]

Greetings;

I am new owner of an older B7100. I haven't really had much time to play with it as yet but I did notice one curious thing about the FEL. When you pull back on the lever to raise the FEL ,it often actually goes down a couple of inches before it goes up. As I said I have only used the tractor for a very short time and at low RPM. I was unloading the mower from the back of my truck using the loader. As the tractor does creep and I am not very used to it, I did have the RPM low and wonder if this is the issue, or maybe low fluids. Any insights greatly appreciated.

Cheers, Erik

 

[Bird]

Erik, we've got some members who are much more knowledgeable than I about the hydraulics, but I've seen the same thing on my Kubotas in the past, and they were new. I think what happens is that you get a little air in the cylinders and when you pull the lever to start pumping hydraulic oil in there, it has to let that air space fill first. I think higher RPM will make it less noticeable; i.e., changes quicker, but possibly not entirely eliminate it. Usually it's nothing to worry about, but if I was very close to something that I might hit, I did worry about it at times.

Now maybe someone can explain it better than I.

 

[Erik Graham]

Thanks for the reply. That seems to be a reasonable theory. Is there any reasonable way to bleed out the air? I suppose the high pressures would rule out the method used to bleed brake lines.

Cheers, Erik

 

[Egon]

As the tractor does creep

For the creep check out the linkage. There is also an adjustment wobble plate type screw on the right side of the transmission.

I have found that higher RPM's have a favorable impact on the hydraulics.

 

[Thomas]

Welcome to TBN Erik.
Creeping...do you have grease fitting,if so use a light duty grease...check under floor plate where the shaft goes into transmission for build of gunk etc..clean the best you can than grease....Egon given good advice.