We have a gas International 444 tractor. We just replaced the filter under the steering wheel and the suction screen filter under the seat. What is happening is that after about 15mins the hydraulic oil gets so hot that the steering goes out and you could litteraly fry an egg on the metal hard lines coming to and from the pump. Anyone have an idea of what is going on? Is there a valve or something stuck that would heat up the hydraulic oil that much? We do have a rear and front set ( under the right foot rest) set of auxillary hookups. We currently are only using the rear for a round baler. Thanks for any info.