Originally Posted by 2quick88
@onehundred80:
The XF's clutch hydraulic master/slave cylinders are integrated into the brake reservoir. This is how it gets it's fluid.
I checked that the reservoir is still full. This shows it is still drawing fluid for itself.
I went along the system in the engine bay and inside by the pedals and did not observe any leaks. Hence, there is no air in the hydraulic system either.
Under normal circumstances when everything is functioning correctly with the clutch, disconnecting the master cylinder from the pedal, would make it even harder to push by hand. So, this may actually give the incorrect impression that there is something wrong with the master cylinder, when there is not. Let alone when there is problem with binding. Not sure what this type of test would prove, in regards to the master cylinder? The only thing that can be expected is a very loose pedal. If that is very tight, then that would be the cause, which I am very doubtful it is.
None the less, I will give it a try, but I am not expecting much from this type of test.
The two cylinders use the brake fluid reservoir as a source for fluid they are not integrated into the brake system as such.
I was only trying to point out that the clutch has some free play before pressure is exerted on the release bearing and wondered if this free play was still evident. You say not so I then wondered if the pedal assembly was in itself jammed somehow.With those miles on the car then anything is possible I suppose and the whole clutch has seized up somehow.
I always look for the simple things first as they are often the cheapest to fix. There is no point in stripping a clutch and finding it was something entirely different.
Good luck and let us know the outcome, I have a six speed and I am interested in this problem.