Originally Posted by amx1397
are you saying you can shift your other cars without using the clutch or that you never have shifted while moving without a clutch,,
I am trying to help you find the problem,, if you can shift with the motor off,without use of the clutch but not when the eng is running running is this correct. to me it is in the shifter,slave,system not the presure plate or clutch disk. can you put the car in first or second and start the motor,,
@BoilerUpXFire:
My XF is a 2004 naturally aspirated with the 6-speed manual. I am the second owner and have owned it since 2006. I have 100,000 miles on it.
I am fairly certain none of the clutch parts have been changed since it rolled off the floor sometime in 2003-2004. Hence, a need for a new pressure plate and disc is not surprising.
As far as my driving style, I consider it fairly conservative. I had to replace the stock Michelins (all around) twice already, and was not happy gutting my wallet to do it. Hence, I do not do any burnouts or anything like that. But, it is my daily driver, and I drive 60 freeway miles roundtrip on the weekdays.
So, the wear and tear is based on daily commuting, with the expected traffic in the Los Angeles area.
@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.
@amx1397:
I am saying, while the cars/motorcycles are OFF, you can easily shift into any gear without using the clutch pedal. This is very normal. I have even done this in the XF as well, before it broke.
-- If it was the shifter, it would not shift at all, whether the car was on or off
-- I do not see the proper reasoning why it would be the clutch master/slave cylinder. It either will leak(have no fluid) and be too soft or it will "vapor lock" and not get fluid and be stiff. Doubt it is "vapor locked", as it is integrated and draws the fluid from the brake reservoir, the brakes are functioning fine and fluid in the reservoir looks good too.