Discs

Rippedabs123

I have been out on the trails today and like half way through my ride my disc brake stopped working, it has no power at all and the lever comes back to the bar.
The brake is a tektro auriga comp hydralic disc brake, front.
Amy ideas as what to do?

97th choice

Could just need bled, could be a seal gone. Tektro's are fairly easy to do so If a bleed doesn't work you might need a replacement hose kit.

Rippedabs123

97th choice wrote:

Could just need bled, could be a seal gone. Tektro's are fairly easy to do so If a bleed doesn't work you might need a replacement hose kit.

RESOLVED!!
I topped up the fluid reservoir with car brake and clutch fluid as it was practically empty!
It is great now and I burped them a bit afterwards to get the air out and they are great but would love to upgrade to some nice shimanos'.

The Rookie

GET IT OUT - NOW!

Tektro use mineral oil, DOT will kill the seals.....you'll need to flush it with mineral and refill and rebleed.

http://www.tektro.com/_english/01_produ ... rt=1&fid=1

Rippedabs123

The Beginner wrote:

GET IT OUT - NOW!

Tektro use mineral oil, DOT will kill the seals.....you'll need to flush it with mineral and refill and rebleed.

http://www.tektro.com/_english/01_produ ... rt=1&fid=1

Oh ru sure it will?

cooldad

Did you follow his link, or you reckon he just posts random links for fun?

The Rookie

DOT will rot through conventional seals, only viton is OK with it, no need for expensive Viton if you are using mineral oil...so yes, sure....

stubs

Rippedabs123 wrote:

I topped up the fluid reservoir with car brake and clutch fluid as it was practically empty!

Oooh epic fail

97th choice

Did you see, and ignore, the words "mineral oil" on your reservoirs by any chance?

bennett_346

Oh dear...

Maybe flush it through with some isopropanol first so no fluid lingers on the seals and rots them over time.

Rippedabs123

Can I use vegetable oil?

The Rookie

I would just chuck them in the bin now - that or throw yourself off a cliff so you don't risk hurting someone else when your brakes fail.....

Go buy some mineral oil, Citroen Hydraulic fluid is the same stuff, dirt cheap, empty what you have now and squirt lots through to flush it, and do it fast, like yesterday - theose seals are already dying....you'll need the right bleed set up to do it, can't recall what Tektro use as it's ages since I had to touch my sons.

And next time, read and check first act later!

Rippedabs123

Sorry if i seemed rude in this forum, im sorry bout all the hassle aswell.
I have taken the bike down to the local bike shop and they will bleed it, flush it through and refill it with MINERAL OIL so i hope it will be ok!
I emptied the resovior and the DOT was just sat on the top so its all gone now and hopefully it didnt get into everything much.
Sorry!!!

stubs

Its okay you arent the first to do it and wont be the last

The best lessons are the most expensive and or embarrassing

The Rookie

No probs, it's your bike and your money......but when people try and help, it's worth listening!

Rippedabs123

Yer sorry!
But do you think the damage would already have been done?

The Rookie

Who knows, some DOT must have got to the seals or adding it would have made no difference, depends on how cheapskate Tektro are with the seals as to how long they will survive exposure - you'll know within a week, if they are OK after that you probably got away with it!

Rippedabs123

OK thank you
If it has already got on the seals do i need to get the seals replaced or what do i do?

stubs

Might be worth sending an email to the importers and asking them for an opinion. They might also have a service kit with the seals which your bikeshop could order and fit.

Rippedabs123

Ok, man from the bike shop just rang me, the brake is fine and sorted out