[W126 Coupe] the brake thing again

[Dick Spellman]

Gary,

You allowed a lot of air into the system with the caliper dis
assembly.  Hopefully the o-rings to the caliper halves will not leak
once you buttoned things up.

You need a pressure bleeder at this point to restore fluid from the
master cylinder down to each of the brake lines.  I'd go ahead and
replace the caps on the reservoir.  Order from MB dealer.

Then fill the pressure bleeder with a liter or two of fresh brake
fluid pump it up to 30 lbs pressure.  Then go to pass. rear and open
the valve and wait for a strong stream of fresh fluid that will follow
the dark old stuff and any trapped air.  Once clear and steady, close
the valve.  Check your pressure bleeder pressure gauge is back to 30
(pump it up if it ran down) and go to driver rear.  Same process.
Then pass front and last driver front.  The abs needs to see 26+lbs
pressure to allow free flow of the new brake fluid using the pressure
bleeder.

As for the uneven rotor wear.  The guides need to be spiffed up with a
wire brush and even dressed (if you are careful to avoid the piston
rubber boots) with a fine file. Check the pins are clean and that may
or may not resolve a caliper acting to only one side.  Worse case you
need a caliper replacement if a rotor side looks dull or rusted after
1000 miles or so where the pad is not being pressed up against the
rotor as it should.

Good luck,

Dick

On Wed, Nov 12, 2008 at 7:18 PM, Gary <garysalas at yahoo.com> wrote:

> i probably need calipers....the car has 218 k and are probably the same

> ones.  the pads where worn unevenly.  primarily the inner pad was further

> down than the outer and the left front pads weren't worn down as much as the

> right wheel.

>

> does this help any...

>

> any advise/suggestions    thanks guys

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