He’s got SIS so he has access to the schematics.
Try this then. Get into SIS and look for the “System Operation” document relating to the functioning of the brake and hydraulic fan system. Once you can understand how the system is supposed to work it will help you tremendously in diagnosing WHY it’s not working as it is supposed to.
Thank, ive found the hydraulic diagram and ive seen a few things i need to check. I will keep you posted.
You really need to find the document that describes how the system operates so that you can understand it first. Once you understand how the system is SUPPOSED to work this could give you some valuable clues on what might be going wrong.
You are right and I actually found them. However as you can see from attached image its saying oil goes from pilot to implement and then accumulator valve. But on my machine pilot outlet in teed with one side going to implement and one going to brake accumulator valve. Is it normal to see differences like this?
I see that as basically two ways of saying the same thing. From a hydraulic perspective it doesn't really matter if the tee is right next to the pilot pump or mounted on the implement valve, the end result is the same.
The fan is working fine now. The bucket actions are good. I have 500 psi at the implement block and 500 psi at the steering pilot valve input but still no steering. I will check the steering pilot valve output Monday. Am I right in saying that my brake and steering issue are not related if my pilot pump is okay?
I will upload the schematic tomorrow, thanks for all your help.
Not knowing what the spec is for the pilot pressure it's hard to say one way or the other. What is the pressure supposed to be.?
Its 500 psi
In that case what you have on your machine is correct as per specification.
A quick look at the schematic shows that the brake and steering systems share no common lines, therefore I would say you are correct. You need to find the test & adjust procedures for the steering system and start to work through those.
I recall that there used to be a fitting somewhere on the fan system that had a built-in screen which, if it got partially plugged, would reduce fan speed. This may have been on a different model but without access to the Parts Manual it's impossible for me to confirm.