2255 hydraulic pump squeal

Oliverfarm · Jul 23, 2014

Replaced my leaky hydraulic pump with a rebuilt one and now I'm getting a squeal noise in the pump like it's got air in the system. I did bleed the valve above the filter and that didn't help. That's before the pump anyways. Can't find a way to bleed the lines after the pump. Heard someone say that the system is self bleeding? Been running it for 15-20min intervals to see what happens. Pump doesn't get hot, just really warm and 3 point is jumpy. System squeals louder when using hydraulics. Any help from you pros would be greatly appreciated,
Thanks,
Mike

bison · Jul 23, 2014

(reply to post at 19:45:18 07/23/14)

elief valve on the pump stuck open or need adjustment?

Cas · Jul 24, 2014

By chance did you see what kind of pressure you are getting at remote valve in the back of tractor? I make up a gauge with a gauge from an Oxygen regulator, 1/4 inch coupling, 1/4x6 inch long nipple, 1/4x1/2 inch reducing bushing, and Pioneer Male end. Check to see the pressure and if the needle jumps around on the way up. I usually set the pump with the valve on the pump to 2000 lbs. or a little more.
It does sound like air in the suction end. Did you change filter? If so make sure it seated right and it is tightened up pretty good.
I have a 2255 and will check in the morning to try to see where it could suck air and post back.
I have never had that problem changing pumps, but there is always a first time for everything.
By the way is the steering jumpy? Also, is it a steel or aluminum pump?

Oliverfarm · Jul 24, 2014

Thanks Cas. The pump is steel (originally off a White 2-155 I believe) PSI set to 2100 on the pump. I hooked up the Chisel plow to move it and the hydraulics are jumpy. Steering is jumpy also. I'll see if I can put together a gauge and check pressure at the remote. Thanks

2255 hydraulic pump squeal

Oliverfarm

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bison

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Cas

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Oliverfarm

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