Hey guys,

I recently purchased a McLeod twin disk setup and a new slave cylender. I saw all the stuff about the slaves being bad so when I got a new one I got one from a company called Raybestos Brakes. I even saw the post about the leaky McLeod master cylender and made sure that my arm was the same size as stock.

So now I have two problems. The first one is that I had some fluid leaking into the cockpit out of the master. I did forget to place the clip on the petal to hold the arm to the master in the exact position so I'm thinking that this might have pushed the seal at an odd angle allowing fluid past it. Since I installed the clip the fluid doesn't seem to be comming out anymore, but the dust shield seems to be inflated now so it might be collecting in there, I'm not sure how to tell.

My second problem is that when I have the clutch pushed in and I spin the rear wheels I hear a slight scraping noise comming from the clutch area. The wheels have the same resistance as when the transmission is in neutral so its just barely dragging the clutch. Is this noise to be expected? will it go away when I break in the clutch?


I also saw Neat's new post on the master spring being installed backwards. I'm contemplating taking mine apart to double check if mine is backwards too. Anybody have any tips on how to do that?? I'm not exactly sure where I should start.

Why do all of these things have to be a pain???

 

If you are not sure about the master cylinder leaking or not, I would pull it back out to verify (fluid in the boot, etc). While it is out, you could also pull it apart to check the spring position. I know the stock master cylinder has a "C" clip (retaining clip) to prevent the piston from coming out - not sure about the McLeod.

The second problem may just be the result of the leak (if there is one) or not all the air has been bled out of the system.

 

I took it out yesterday, there definately was a big leak there. The Oring that is on the piston doesn't seal at all and you can actually wiggle it in the bore, there's that much room. I overnighted my master back to McLeod and they should be sending me one out today. Hopefully the new one won't have the same problem, but I'm guessing there's a batch of them that will.

 

Unreal that these problems continue to plague our hydraulic set ups! WTF!!

Hopefully the next one will be right

 

We all do like to giggle at the Mustang. One of their "Better Ideas" is a cable-operated clutch. Maybe not such a bad idea... I recently went through replacing my '86 clutch master & slave cylinders. That was right up there with the worst job I'd ever done. My fingers are too big and my body no longer contorts like it used to. I'd rather pull the engine than try to hook up that clutch rod again!

I can't believe that McLeod put out a master with such a sloppy piston fit. They make good stuff. Obviously, someone was asleep at the wheel when your master was assembled! I'd be surprised if the new one wasn't perfect.

Good luck,

Tom

 

Did you R&R the slave to check the seal?

I got one at car quest (made by raybestos) and the seal was backwards

 

Jeff,

Thanks for the heads up, I took it apart last night and it was backwards. So now that's fixed I can take that out of the equation.

I talked to Fred at McLeod yesterday. He did pull my master apart and said that the piston was 3/4" and the bore size was 13/16". I was supprised that I didn't have a constant flow of fluid into my cabin.

So they are sending me a new one over night. It should be here on Saturday to let me get the car back on the road.

If this is what was wrong with mine I can't see it being an isolated case. If people are having some bad leaking they might want to pull the master apart and measure the piston with a caliper.

 

Glad I could help