Tektro Auriga Pro - Issues!

king_jeffers

Following up a previous post - I have a problem with my tektro auriga pro pistons on the rear, one of the pistons fails to extend and the other fails to retract. Before I bleed the system tonight I was wondering, is it worth trying to dismantle the calliper and lubricate the pistons? I've never done this before and I'm a bit worried they might be tricky to put them back together. Has anyone done this before?

With regard the piston issue so far to try and resolve I have;
- let a small amount of fluid out, no change except lack of pressure now.
- tried (over) pumping the brake, one of the pistons popped out! :oops:

I first noticed the problem when riding home, the recently replaced pads where causing the bike to judder when applying the brake. Changing the calliper location failed to resolve and when I looked at the pads they appeared to be worrying close to each other - had to force open to slot the disc in... help!

davenice

If you think one of the pistons is stuck, as you suggest, this is how I improved it (I was too scared to take the caliper apart!)

I've got a set of Auriga Comps and had a similar problem - one of the pistons was completely wedged. I removed it from the bike, took the pads off, and tried holding the moving piston in and squeezing the lever. That didn't work at all!

In the end I used a pair of clamps to hold the moving piston still and squeezed the lever quite hard. The stuck piston pushed out and i rubbed some brake fluid around it as a lubricant. It's not completely ideal now (probably need to repeat the procedure!) but it's loads better.

It took me a while to work out how to use the clamps, but in the end I balanced an allen key on top of the piston, held another one on the back of the caliper, and tightened a clamp at each end of the keys, which held the piston back.

Dave