hey, thanks for your answers,
Wayno: I think that´s the part, but the real problem is that this mechanic steeringbox, they all have this problem, and if I buy the used part, I'll be buying the same problem
datzenmike: I know what you say, in fact, I repair all the front drivetrain, all rubbers are new, and the only part left to repair is the steeringbox.
I think there is an internal problem in the steeringbox
thanks anyway