Brake calipers ???

DWRAT · #1 (**permalink**) 01-17-2010, 10:17 PM

Why do I have 4 bleed screws on each brake caliper?
What a pain in the but to bleed the system but it is done and now my rears appear to be working.
Dan

mickmate · #2 (**permalink**) 01-17-2010, 10:20 PM

Top and bottom, inner and outer. That's so they can be mounted left or right and you have a bleeder at the top where you need it.

DWRAT · #3 (**permalink**) 01-17-2010, 10:29 PM

So does that mean I only needed to bleed the 2 top screws?

RICK LAKE · #4 (**permalink**) 01-18-2010, 04:02 AM

DWRAT Dan the calipers are universal that they can mount on the right or left side of the car. Just do the tops on all and you will be ok. If you have a plastic or rubber hammer, tap on the calipers 5-7 times each. This is to help get all the air out of the calipers before you start driving. After you do a drive and get back bleed the system one more time and watch to see no air bubbles in the fluid.

Rick L.

Car Nut · #5 (**permalink**) 01-18-2010, 05:51 AM

Quote:

Originally Posted by DWRAT

Why do I have 4 bleed screws on each brake caliper?
What a pain in the but to bleed the system but it is done and now my rears appear to be working.
Dan

I suspect that you have four to allow the calipers to be mounted in different locations either in front or back of the wheel center line. That said, air goes to the top of the piston bore and the upper bleed screws should be used (because that is where the air is).