Hey Guys, I just finished replacing the clutch on my 94.5 with a luk conversion kit. I replaced the dual mass flywheel with a conventional one. Well I decided to replace the hydraulics while I was there because of wear issues. I replaced everything and cannot get any pressure at all. How the heck do you bleed these things. Thanks in advance Mikeski

 

The easy way is to pre-bleed the slave cylinder with the tube attached (out of the truck of course), then bleed the master cylinder (in the truck), then install the slave cylinder and tube as a unit.

 

I had a 94.5 truck that I replaced the clutch and slave cylinder on and boy was it a pain. I have done tons of mechanic work and pride myself on being competent and doing quality work. That being said, bleeding that slave cylinder had me licked. I fooled around with it for day and a half, swaped it with an additional new one thinking it was defective, and still couldn't get it. Finally i said the heck with it and sent it to Ford to let them work on it. 7 days later i went back and they had the back end of the truck 4 feet off the ground doing god knows what to get the air out of the system. Long story short, Ford's books show the job should take 3 hours, it took them a whole lot longer than that to do it because the system doesnt actually have a good way to bleed it. They only charged me the book rate on the work so they treated me fair. My advice would be to send it to your local dealer and let them fool with it. You swapped the clutch out already so the expensive work is done, all that they should have is a few hours of work and if you get someone that has done it already, they should know all the little tricks to making it work. The risk in doing it yourself is that if you get 95% of the air out, that last 5 % might prevent your clutch from fullly dissengaging and you will wear out your tranny.

 

I know what you mean. I have done more complex work than this successfully and this is causing so much grief. If anyone has a more detailed procedure on bleeding this system, I would love to see it. Thanks for all the help. Mike

 

Have you guys ever replace the clutch master cylinder on a ford gasser truck? I know I'm going to be doing a diesel soon and was wondering if there was a difference, I don't want to get in over my head (as usual). I've done a couple gassers with out the trouble you guys have mentioned. Didn't mean to your thread. Thanks

 

My brother And I ran across this problem. What worked for us was pumping the peddle at a very rapped rate until it go better and better. Of course this was after the bench top bleed and installation.

 

the way i did mine was install the slave. fill reservoir, crack bleed screw, have wife push pedal until solid stream, refill reservoir, push pedal lots. works like a champ. done this lots on this truck and my 62 chevy.

 

It's been awhile. Let me see. I had a slave blow out on me first. Bought a new one and installed it. Couldn't get the clutch to release but there was no air in the system. Found out later, Ford changed the master cylinder AND slave design and the two have to be changed as a pair on my 95 psd. The new slave had a strap on it to limit travel. I bled it on the bench, holding the slave higher than the master cylinder. Installed it and the first time I stepped on the clutch, that broke the shipping strap and the clutch worked just fine.

 

Old thread but I need help,,,,,,,,,, heres the deal I have two PSD with ZF's and have done several clutch and slave cylinders in the 11 years that Ive owned these trucks bleeding the clutch was never an issue until now the differance is that there is no bleeder on the slave like the previous units had , Ive been on this two days and getting no where any Ideas so far I have a little pressure but not enough to work the clutc

 

Hello,

Don't know if this will help.
When I have run into broken or rusted bleed screws I have been able to bleed them by loosing and tightening the brake line itself. It will depend where the line is mounted in the cyl. I hope I made sense.

Is that supposed to be bench bled first?

JOe

 

Well in the past I never bench bled a clutch master so maybe I need to back track and since there is no bleeder on this slave I took the line off at the slave while still in the truck and ran the line into a container of brake fluid and bled the master and the line on the truck then hook up to the slave and tried to bleed some more to no avail, however I am getting a very slight air bubble stream at the resvoir so maybe getting there just really really sloooooooooowwwwwww

 

I never bled one without a bleeder.
How did you try to bleed after hooking the line back up? I'm not clear on that.

If you didn't already. Have someone pump up and hold the pedal down, and while down crack the line fitting at the slave cyl.
If the line is at a high point it should work.
If not pull it and bench bleed it. Did it come with instructions on bleeding?

Joe

 

Yeah no bleeder on the slave is friggin stupid I should have known since its a cheapo Auto Zone unit ....... anyway I bled the master and the line straight in to brake fluid it blew air and sucked in pure brake fluid so that leaves me to think the slave is air bound and with no bleeder its a long hard row to get the air out......

 

See my previous post on the issue. The lack of a bleeder has nothing to do with the source of your parts. OEM ford ones are the same way. The only way to do this effectively is to bench bleed the complete assy(master, line, slave). Problem is when you do this, there is NO way to effectively reinstall the equipment once it is put together due to clearance issues.

I would think possibly if one were to drop the tranny crossmember you could lower the rear of the transmission enough to get the clearance needed to slide the slave down with the line already attached.

If your not willing to do that, my advice is to send it to a stealership and get a price BEFORE you send it in and hold em to it. I do everything myself engine rebuilds, the works, and that is the only thing that ever had me licked.

 

Got to dis agree I have two trucks and they both have and had a bleeder on the slave AZ parts suck, take it to a dealer thats the worst advice I ever heard ,,,,,,,,,,, I 'll search out a better part with a bleeder they are out there I hve one on the 97 F-250 and had one on the 95 cheap is cheap and AZ is the Kings Palace of cheap crap parts...