BX2200 Steering - Hydraulic Training

[dannydan3]

Another in my series of hydraulic education classes.

I replaced my power steering hoses recently and now am having problems with my steering.
I think that I may have introduced some crud into the lines when I fed them though to the steering cylinder. Would contamination effect the cylinder in a serious way? After installing the new lines, I went all day working with the FEL and everyting was fine. Swapped FEL and grader box for the MMM and mowed about 3 acres, let the tractor sit for about 20 minutes and lost the steering. Moved the wheel to the left and right limits a couple of times and then I could steer again. Now back to no steering.
Fluid checks OK, and was changed as per maintenance schedule. Tractor has 914 hrs.
Any ideas?

 

[techman]

You say no steering. What happens if you turn the wheel ? Dies it spin free or is there resistance ?

paul

 

[Volfandt]

Sounds like the seals in the steering cylinder could be leaking -or- you've still got alot of air in the hydraulic system.
Theres a procedure on how to use the 3ph to bleed off the system in the owners manual. Try that 1st.
Good luck

 

[dannydan3]

It spins free - and I'll try the air bleeding procedure, hope that works.

 

[dannydan3]

I don't get it, today I mowed for about an hour and my steering was fine. Fluid was at proper level before mowing.

I would think that a hydraulic cylinder would either work or fail, or do they gradually start to fail before giving up completely?

I let the tractor idle for about 5 minutes before mowing, just to make sure that there is not any air in the system, per the manual.

 

[TobyH]

Your tph lever isn't stuck in the raise position is it? That messes up the whole hydro system.

 

[SPYDERLK]

It spins free - and I'll try the air bleeding procedure, hope that works.

Theres an o ring in the steering cyl that wears and causes just that symptom. - - When the symptom arises, try turning the steering wheel very quickly. If the wheels steer its the o ring.
larry