Hi, just recently experiencing some nasty steering problems with my centaur. It's operating in a very cold environment (Norway), I started to get trouble with steering for a few weeks ago when it just didn't work at start. (I have hydrostat system). After running the motor for 5min in idle, it was ok. Than it didn't work anymore. After I heated it up at night in my garage (not isolated) with heaters and so on. It again worked fine for a while.

But since last week the steering is totally a mess, it still only works when not driving. to the left normal, to right very slow. But today it was just the otherway around! when not steering the Argo it can just suddenly start to spin. sometimes i got some of the steering back, while driving for like a few seconds, and than gone again. As i said in 0 speed it works for a bit .

Anyway, changed oil, level is being checked every day. Filter is shifted out. No traces of metal pieces in the old oil.

What could this be?

-moisture in the transmission?
-transmission failure?
-hydrostat pump is not operating properly?
Anyone experienced the same?

I hope someone is familiar with this problem