Saint brakes, leaking problems

trigger118

Hi all,

I recently bought some Saint brakes (M820) online and in bits (caliper, hose and lever seperate) because it was cheaper that way basically!

I put the front together and bled it no problem.

The rear one I put together same as on the front and then tried to bleed it, I then noticed that fluid was leaking out where the hose meets the lever. I assumed that the olive hadnt deformed properly so there was a little gap for fluid to escape. I ordered a new olive and connector pin and tried that and had exactly the same problem again, other than just doing the same again with another olive I'm at a loss!

Any suggestions from anyone?
Cheers

The Rookie

Damage to either of the olive seats (in the lever or the nut) is the most likely issue, simple visual inspection.

trigger118

I cant see any damage to either, however its my first time building brakes like this so ill take them down the LBS and see if they see any damage, I'll report back after!

trigger118

well the LBS cant see anything obvious, he reckons it looks like the Olive has been twisted though which would imply damage to one of the seats, gonna try a new nut and then if that doesnt work then i guess its a warranty job on the lever.

cooldad

You get it wrong and expect a warranty?

trigger118

Sorry completely got the wrong end of what The Rookie was saying, I thought he meant damage as in manufacturing fault? Don't know what I did wrong if thats the case, like I said the front one worked fine first time and I did exactly the same thing. I'm not trying to pass blame, just trying to learn.

The Rookie

If the Olive didn't go in straight, sounds like user error.

trigger118

absolutely, not denying that, the guy at the LBS said it looks like it got caught on something and then twisted. When you guys do it do you put the olive on the hose or in the lever or what? I had it on the hose, connector pin pushed in the end of the hose and then started tightening the nut.

What would you guys recommend as the best way to do it in future judging from your experience?

cooldad

Sounds about right.

The Rookie

Olive on hose with barb in the end, push all the way into the lever and then do up the nut while keeping the hose pushed in, if it slips out the hose end can end up under the Olive which guarentees a leak.

nicklouse

also the hose does need to be cut square.

trigger118

Ok cheers for your help guys, will have another play.

nicklouse

trigger118 wrote:

Ok cheers for your help guys, will have another play.

dont play.

download and read the info on shimanos web site.

they are not difficult brakes.