ST1300 clutch fluid replacement

[CruisingDog]

I think that I have been misunderstanding you. I thought that we were talking about doing the job correctly. It sounds like what you mean is if someone simply connects a vacuum bleeder and pulls fluid through the system and calls it a day then yes, I agree with you, that is not bleeding the system of air and again, that is user error. A vacuum bleeder's primary function is an easy way to move a significant volume of fluid through the system. Moving fluid through the system is not bleeding it of air. I never understood why they call them bleeders in the first place. They should call them system flushers or something like that. After moving fluid through the system, whether that was done with a vacuum pump or not, bleeding the system is always required. There is no reason why that can not be done with the assistance of a vacuum bleeder if it is done properly. Using a vacuum bleeder does not relieve anyone from the responsibility of pressurizing the system. Nor does it relieve them of the responsibility of excersing the pistons. It is not a magical mystery tool. It is only a method of moving fluid, nothing more. If using it does leave more air in the system than was there before then again, that is user error and someone really screwed up because it can not manufacture air. It can only suck air in if the user allows it to.

It’s a bleeder in same same way a vein get’s blood taken out by a syringe. So the terminology is correct. What you are talking about is de-gassing the liquid. That is a different thing. When people talk about bleeding the brakes they are talking about flushing the fluids (usually due to water buildup since brake fluid is hydrophilic). De-gassing is a part of that process if done correctly.

 

[Andrew Shadow]

It’s a bleeder in same same way a vein get’s blood taken out by a syringe. So the terminology is correct. What you are talking about is de-gassing the liquid. That is a different thing. When people talk about bleeding the brakes they are talking about flushing the fluids (usually due to water buildup since brake fluid is hydrophilic). De-gassing is a part of that process if done correctly.

De-dassing- That is more precise and descriptive. I think that you would find that most mechanical shops do not consider bleeding and flushing to be the same thing. You will pay a lot more for a system flush than a simple bleed. They are two completely different procedures.

Take your car to any garage and ask them to bleed your brakes and I will be very surprised if they also flush them unless you discussed that with them first. If you also want them flushed you will most likely need to say so. Two different procedures, even in most service manuals.