MK5 Golf GTI

All Things Mk5 => Modifications & Technical Area => Technical Workshop => Topic started by: Andy on September 23, 2017, 02:23:38 pm

Title: that could be the problem
Post by: Andy on September 23, 2017, 02:23:38 pm

the brake has been squealing for a while so thought I would take a look...turns out the piston is seized as the dust cover is missing

(https://s26.postimg.org/h2i0vgtuh/20170923_122632.jpg) (https://postimg.org/image/uw6dkimfp/)

Title: Re: that could be the problem
Post by: AJP on September 23, 2017, 05:10:59 pm

Quote from: Andy on September 23, 2017, 02:23:38 pm

the brake has been squealing for a while so thought I would take a look...turns out the piston is seized as the dust cover is missing

(https://s26.postimg.org/h2i0vgtuh/20170923_122632.jpg) (https://postimg.org/image/uw6dkimfp/)

The squealing - is it when you're coming on and off the pedal, and goes away with heavier braking? If so, that's what's happening with one of my mk7 PP calipers. I've had a suspicion for a while that one was very slightly 'grabbing', like it's a slow piston or something.

Are you tackling it yourself or sending the calipers of for rebuild/refurb? If so, let me know who you use and how you get on

Title: Re: that could be the problem
Post by: Andy on September 23, 2017, 06:23:09 pm

it's squealing when you are slowing down at junctions etc...I have ordered a caliper through work and think it costs £60 through work and hopefully sort it next week

Title: Re: that could be the problem
Post by: AJP on September 23, 2017, 06:28:07 pm

Quote from: Andy on September 23, 2017, 06:23:09 pm

it's squealing when you are slowing down at junctions etc...I have ordered a caliper through work and think it costs £60 through work and hopefully sort it next week

That's not a bad price. Wonder what a new mk7 PP caliper would be...

Title: Re: that could be the problem
Post by: Andy on September 27, 2017, 11:36:32 pm

(https://s26.postimg.org/xggpalnw9/20170926_133616.jpg) (https://postimg.org/image/ix9k96ur9/)

Title: Re: that could be the problem
Post by: pudding on October 04, 2017, 09:18:46 am

One of my calipers is making the same noise also.  Standard 312s.  Sticking/seized piston makes sense as I've noticed the pedal feel is quite variable. Sometimes very strong, sometimes not so strong.

Title: Re: that could be the problem
Post by: lukemk5gti on October 04, 2017, 09:53:32 am

@oisinc (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=4391)

This sound like your problem too?