Retrobike Forum Index

It is currently Wed Dec 07, 2016 9:40 am

* Login   * Register * Search  * FAQ



Post new topic Reply to topic  [ 5 posts ] 
Author Message
PostPosted: Wed Sep 05, 2012 6:48 pm 
Retro Guru
Retro Guru
User avatar

Joined: Sat Jan 19, 2008 11:16 pm
Posts: 3711
Location: #2058
Anyone out there had this problem also?
My front brake pads (Hayes 9's) aren't retracting and I was wondering how easy it is to replace the pistons, rebuild and bleed it.
Any advice, please???


Top
 Profile  
 
 Post subject:
PostPosted: Wed Sep 05, 2012 7:19 pm 
Retro Guru
User avatar

Joined: Mon Feb 14, 2011 8:25 pm
Posts: 506
Location: worksop
i had this prob with some tektro aurigas and avid juicy 5s. i got some silicone grease and pumped the brake lever so the pistons were nearly out of the caliper and put a generous amount on the sides of the pistons (wiping off excess). then work the pistons back in and out a few times and bleed them, and hey presto no more sticky pistons :D


Top
 Profile  
 
 Post subject:
PostPosted: Wed Sep 05, 2012 7:22 pm 
Gold Trader / rb Rider / Special
Gold Trader / rb Rider / Special
User avatar

Joined: Mon Aug 31, 2009 12:26 am
Posts: 16165
Location: Rurally close.
They are quite well known for it. They can be done as dbraxis suggests.


Top
 Profile  
 
 Post subject:
PostPosted: Wed Sep 05, 2012 8:25 pm 
Retro Guru
User avatar

Joined: Fri Jan 12, 2007 1:32 pm
Posts: 1953
Location: Staffordshire
The 9's are really east to service (I like Hayes brakes, unlike most peple who seem to hate them).

I'd suggest removing the pistons to see if they are scored from ingress of dirt etc and replace them and the piston seals if they are. The kits don't cost too much. If the pistons are in good condition lube the pistons with DOT fluid. I wouldn't put silicon grease on them as I'm not sure how the DOT fluid will affect it (for example the Stockers are famous for sticky levers and there is a special grease needed to resist the corrosive nature of the DOT fluid).

Getting the pistons out should be a doddle - remove the caliper from the mount, take the pads out and squeeze the lever. Once the pistons are mostly out, split the caliper and pull them out. Just getting the pistons to poke out will gove you enough room to lube them with DOT fluid.


Top
 Profile  
 
 Post subject:
PostPosted: Wed Sep 05, 2012 11:32 pm 
Retro Guru
Retro Guru
User avatar

Joined: Sat Jan 19, 2008 11:16 pm
Posts: 3711
Location: #2058
Cheers Fellas.
I'll try the greasing/DOTting first as it seems the easiest to do.
If I don't get any joy with that I'll strip it down.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 5 posts ] 

All times are UTC [ DST ]


Who is online

Users browsing this forum: No registered users and 8 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

About Us

Follow Retrobike

Other cool stuff

All content © 2005-2015 Retrobike unless otherwise stated.
Cookies Policy.
bikedeals - the best bike deals in one place
FatCOGS - Fat Chance Owner's Group

Powered by phpBB® Forum Software © phpBB Group