dot4 in when mineral oil needed

[etpm]

I change to mineral oil but the brakes are still warm.The problem is i didn't find the seal.

Warm brakes sounds like they are dragging. Get the front wheel off of the ground and see if they turn easily. If they don't then try adjusting the brakes.
Eric

 

[ppea]

The wheels can be turn by the hand.It cannot be adjusted,it's a wet disc brakes.Can an incorect oil to be cause for heat? I don't know if it's corect oil in front axle.

 

[etpm]

The wheels can be turn by the hand.It cannot be adjusted,it's a wet disc brakes.Can an incorect oil to be cause for heat? I don't know if it's corect oil in front axle.

I apologize for not reading your original post again before making my post. I don't know anything about wet brakes but do know a bit about wet clutches and oil viscosity and heat. When a thick oil is forced to move, for example when it is stirred by brake discs, it will heat up more that if a thin oil is subjected to the same forces. So if the wrong oil is used in your brakes, if the oil is too thick, it could indeed get hot. Also, I know that different oils act differently when subjected to shear forces, such as would be encountered in a disc braking system. So the wrong oil could indeed run hotter than the correct oil.
Eric

 

[etpm]

I looked online for your tractor, the one you have listed in your profile, and the only tractor I could find was a two wheel tractor. This makes me think you are asking about a different tractor because you mention front wheels. Furthermore, looking at the specs for the tractor in you profile, there is no oil listed for the brakes. What tractor are you needing help with? I bet if you told us all there is a pretty good chance that someone with knowledge would be able to help. This site is a great resource.
Eric

 

[TractorTech]

Your tractor is a Case 1056xl?

 

[ppea]

I have a grillo ,case 1056xl and now i buy an valpadana 6575 isr-rev,what is it about.I the manual it says to use utto(Universal Tractor Transmission Oil)GL4 because it's ok to use when require a combined hydraulic, transmission, and final drive fluid with wet brake and power take-off performance.In the tractor i don't know what type of oil is in the front axle.It's only get hot when i run top speed after 1 km because the drive axle spin very fast .Today a wheel on the front almost block for a few second.The wheels i can rotate by hand if i lift the front of the tractor.

 

[TractorTech]

The seals on the front brake actuator discs are probably swollen from the Dot 3 fluid and may start working again after flushing with mineral oil, but not likely. The actuator disc should be located in the front hub. I don't know what axle a Valpadana 6575 uses, but I have attached a picture of a front hub from a Fiat/New Holland hub from a TN95A. The actuator disc is #5. The inner seal is #6, outer seal #7.

If you could post some pictures of the front axle and hub, it would help. Valpadana is part of Landini, so a Landini dealer may be able to help with parts.

 

[ppea]

i remove the seal and this is the cause.i find only the biger seal to buy.I think to put an o ring to replace the small one.

 

[ptsg]

Try an hydraulic shop. Maybe that have a one of those teflon piston seals that may work in your application.

 

[ppea]

Very small chances.