|
It's pretty simple, but you need a good set of hex-keys...
The rear caliphers are a little different from the front ones.
What you do to change the pads is as follows (most of the stuff I describe is at the rear of the calipher, unless noted otherwise):
Remove the wheel (obviously ;-)
Remove guide-spring on front of calipher.
Disconnect parking-brake cable (now is a good time to check them.. They tend to wear out and start to seize in the sleeve..). You can wait with this step until the calipher is released as well..
Remove (using correct hex-key) metal dust-cover from parking-brake ajdustment hole (can be stuck a bit.)
Remove the plastic dust-caps from the guide-pin covers
Use hex-key to remove guide-pins (examine for damage and clean properly, do _not_ lubricate..)
Now the calipher is separated from it's mounting, but you probably can't pull it off, because the pads have worn 'into' the disc and they won't clear the resulting edge anymore.
The pistons used in these caliphers can _not_ be pushed back like the front pistons. These use a different method..
To be able to push the piston in, turn the parking-brake adjustment screw (using a hex-key) 'outwards'. Take care not to remove it all the way..
You should now have enough clearance to get the calipher off.
Check disc for minimum required thickness!
The pads should be 2 'types'. One type has a flat rear, while the other has some sort of metal structure on it. The metal part fits in the (hollow) piston and secures it when you replace the calipher.
Make sure the rubber boots on the pistons are intact and clean.
Using the adjustment screw you can push back the piston a little more so that the new (thicker) pads will be separated enough to clear the disc.
Installation is the reverse, but don't replace the adjustment-screw dust cover yet!
After you have done both wheels, you should depress the brake pedal carefully a few times. Then use some force to 'seat' the pads properly.
After doing this turn the adjustment screw 'inwards' until you can't rotate the disc anymore. Back off 1/4 turn. Do the same on the other side.
Now pull and release the parking brake a few times and re-check the adjustment setting. Make sure the disc is firmly 'stuck' with the parking brake applied and free to rotate when released.
Some initial 'friction' sounds are normal until the pads have settled into the old wear pattern on the disc.
Now replace the adjustment screw dust-covers (some anti-seize is a good idea..) and you're done.
Check everything after you have driven for a couple of weeks. The parking brake may need some adjustment again..
Hope this helps..
Bye, Arno.
|
