Removing & Replacing Alfa 159 Rear Brake Discs - Page 2 - Alfa Romeo Forum
You are currently unregistered, register for more features.    
Thread Tools Search this Thread
Status: Back in the Alfa Fold again
AO Member
SanRemo78's Avatar
Join Date: Nov 2009
Location: United Kingdom
County: Lancashire
Posts: 575
I mean that the lump of steel that slides within the calliper, acting on the back of the brake pads, called the piston, literally falls out and has to be put back in. I'm guessing you'd spot that but there is another possibility. These pistons get covered in crap and/or corrode if the rubber dust shields are missing/split. If you fail to clean them up before winding them back in and the damaged surface contacts the piston seal, scoring it, then the calliper will leak fluid slowly under pressure. Can be restored with new seals and pistons usually.
SanRemo78 is offline  
Sponsored Links
Status: -
AO Silver Member
Join Date: Apr 2008
Location: New Zealand
County: -
Posts: 2,239
For the lack of 'responsiveness' issue, did you carefully clean the disc and pad friction surfaces with brake cleaner after installation? And did you follow the break in procedure for the pads? Should be detailed in the instruction sheet in the box, but usually you need to brake hard from something like 70km/h down to 10 km/h 10 times in quick succession, without ever actually stopping.
sprint_veloce is offline  
Status: Still engineering
AO Silver Member
Old Engineer's Avatar
Join Date: Mar 2003
Location: Esher
County: Surrey
Posts: 1,927
Images: 12
Fluid leaking!! Get it down to a dealer. There should be absolutely no fluid showing. If possible get it delivered on a low loader to prevent any brake failure.
Old Engineer is online now  
Status: Extra miaow
AO Member
Malheus's Avatar
Join Date: Apr 2011
Location: Sweden
County: Norrbotten
Posts: 775
Images: 5
Originally Posted by jasondainter View Post
Thanks for info. Can you elaborate what you mean by the piston dropping out?

Ill certainly take it to a garage if a) the problem persists and b) its not something I can easily fix but keen to get to the bottom of the issue first.
Where are you located..?
Malheus is offline  

Go Back   Alfa Romeo Forum > Supported Alfa Romeo Models > Technical & Vehicle Assistance > Alfa 159, Brera & 946 Spider

159 , alfa , brake , discs , rear , removing , replacing

Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

For the best viewing experience please update your browser to Google Chrome