• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

Front caliper slider boot/sleeve

Brendan W

Brendan W

Forum Sage
Past Site Supporter
What is the purpose of the rubber sleeve ( called boot on parts lists ) on the lower slider pin of the front calipers and how much should the calipers rock when you grab them?
I think someone used mineral grease here and the sleeve has swollen and pinches a little going back in.
 
I ripped one by pinching it while tear down inspection.
I need to replace as it keeps the grime off the pin and that leaves the action nice and smooth with the application and release of the brakes.
Helps keep them from corrosion also I would guess.
The pins are what keeps the two halves of the assembly from separating.
The part that is bolted to the forks is behind.
The main body that holds the piston and fluid is what you see and bleed in the front.
The fronts are locked into the "behind" part with the threads of the pins.
The fronts motion is kept straight (out and in) with the smooth part of the pins.
They also keep the front part of the assembly from turning.
The piston pushes on the one pad and the front part of the assembly is pulled away from the back part of assembly with this motion.
The back part of the assembly keeps it in line and centered on the disk.


The calipers shouldn't rock at all with the stock assembly.

Both the upper and lower have a boot.

Make sure there are no cracks anywhere that would cause the rocking motion.

Make sure the threads on everything are good.
I would pull all the bolts out and put them back in proper place without the assembly and check if the problem is with bolts, holes, or threads that bolts go into.

Make sure the front assembly's holes for the pins are not oval.

I think it has been two years I have not had the boot on.
Thank you for reminding me as it is the lower pin and not noticed easily.
Things are drier over here.
 
You must log in or register to reply here.
Back
Top