Posted by Coytee on April 11, 2009 at 17:12:07 from (207.65.105.131):
Wifes cousins tractor again...I'm trying to fix several issues at once and this is the one that caused that decision to be made! (to try to fix several)
Symptom: He was cutting on mild slope couple weeks ago and steering quit (power). He shut down. 2 weeks ago we fired it up and everything worked FINE. We concluded he simply starved the pump on the hill and he was low on fluid.
He filled with hydraulic fluid and I commenced to cut one of the fields. About halfway through the field the steering became "weird". It was basically not responding as quickly as normal..as though it took another turn or so of the steering wheel to complete the turn of the front wheels. Shortly thereafter, the steering quit all together and as I went over the field to the side, the front wheels simply wobbled to the left or right, depending on the terrain. I finally ended up using the turning brakes to help guide the tractor to where I wanted it.
Parked it, fixed the PTO gasket leak, checked the hydraulic fluid and ...uhoh... it's still FULL.
Now.. (drats), as I'm typing this, I'm thinking...I SHOULD do two things... first, check the steering again which I presume won't work, but I should ALSO check the PTO.
I'd surmise if the PTO works fine then the hydraulic pump is fine and something else is killing the steering...if however, I don't have either, then what?
My first presumption is the pump might be bad. It's the original pump on this 30 year old tractor.
If I need to remove the pump, according to the diagrams I see on the caseih.com site, it appears as though this might be gear driven? I might just unbolt the attachments and unbolt it from the flange to remove it from the tractor??
Any "dangers" I should be concerned about if I intend on removing the hydraulic pump?
btw, wifes cousin said he recently checked for blockage in the hydraulic sump and there is supposedly no protection screen...so it was clear. I'm still a bit nervous about the accuracy of that statement.
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