Bleeding the RBV Hydraulic System

[04 EDGE]

uh what do you think happens when you take metal off the flywheel?

the slave cylinder will now have to extend 50-70 thousands of an inch more to disengage the clutch. this is why he now has to press the pedal all the way to the floor.

pretty basic stuff.

 

[fastpakr]

And you think .050-.070 is enough to have to push the pedal to the floor? Not a chance in the world. There is another problem going on here.

 

[04 EDGE]

heres a .050 one

http://www.bestvalueautoparts.com/item.wws?sku=FWS-14&itempk=62360&mfr=PIONEER INC.&weight=2


too bad he now has to do the job over again.

 

[fastpakr]

You're giving him bad advice. Yes, with an extreme cut of the flywheel that might be necessary. It is NOT his problem.

 

[04 EDGE]

And you think .050-.070 is enough to have to push the pedal to the floor? Not a chance in the world. There is another problem going on here.

yes it is. i know this from personal and professional experience.


clutch disengagement is not rocket science, there is zero tolerance for this application. there is not that much grey area involved with the engineering of these trucks.

how much space do you think there is between the clutch disk, pressure plate and the flywheel when its disengaged? not much. and there is no adjustment designed into the system.

this is also a "self bleeding" system. he has been driving the truck for a while after the repair, there is no air in the system.

 

[fastpakr]

That's funny, here after ten years of driving RBV's I had learned that they were a self adjusting system. Something strange must have changed today.

The system WILL NOT self bleed when there is air in the master. It is a common problem which is discussed here frequently, as are instructions to correct it.

 

[04 EDGE]

You're giving him bad advice. Yes, with an extreme cut of the flywheel that might be necessary. It is NOT his problem.

it may "NOT" be his problem, you have a crystal ball i assume.


how do you know this is "NOT" his problem.

i am not giving him bad advise, just trying to help with the "real world" experience i have had over the last 23 years of working on cars and trucks.

 

[04 EDGE]

That's funny, here after ten years of driving RBV's I had learned that they were a self adjusting system. Something strange must have changed today.

The system WILL NOT self bleed when there is air in the master. It is a common problem which is discussed here frequently, as are instructions to correct it.

here let me get the 'alldata" procedure on how to bleed this system.

i have NEVER had any problems with ford trucks and bleeding the clutch system that needed a procedure like is on here.

 

[fastpakr]

Good for you? Congratulations? What do you want me to say? It's a common problem. Yippee for you that you haven't experienced it yet.

How is it that you think .050-.070 of flywheel material is going to cause a problem when the depth of the clutch just increased by many times that?

 

[04 EDGE]

self bleeding, gravity bleed then pump the pedal, wait 3 minutes then pump the pedal again.

 

[fastpakr]

And if all you were trying to do was bleed the system the traditional way without getting the trapped air out of the master, that would work fine.

If there is air trapped in the master cylinder, that procedure is useless (as is the entire side discussion you've led this thread on, which is why I'm now splitting it off).

 

[04 EDGE]

well if the correct tool was used to disconnect the line from the slave cylinder then there is no way the master could get air in it. the only way it could get air in it would be if it ran dry. i have replaced to many clutches and masters, slaves. i have always bleed them like this and never had a problem.

so my profesional opinion is, "if" he had his flywheel machined then it now is to thin thus causing his low pedal and disengagement problem.

i'll go toss my ASE certs in the garbage now.

 

[fastpakr]

And you don't think the much thicker clutch disk would make up for the few thousands of an inch removed from the flywheel?

 

[Bob Ayers]

That's funny, here after ten years of driving RBV's I had learned that they were a self adjusting system. Something strange must have changed today.

The system WILL NOT self bleed when there is air in the master. It is a common problem which is discussed here frequently, as are instructions to correct it.

You are exactly right, a hydraulic clutch works on pressures, and the slave will move against the pressure plate fingers until the forces equalize, making them self-adjusting. This guy is confusing mechanical clutch linkages with hydraulic systems, but he has a history of doing this......

 

[04 EDGE]

bob dont start your crap, you know nothing about this.

and the replacement clutch disk is no thicker then a new OEM disk.

you guys need to accept the fact that i am right on this.

mr ayers, you are just starting crap, you see a heated discussion between me and someone else and you post something like that, totally out of line, you added nothing to this. haven't you been warned about this already?