Abeness <news@nada.x> sprach im news:La2dnZrs7LHwsTncRVn-hA@rcn.net:

> Confound it!! So I was all set to replace clutch master and slave cyls
> today on my 94 Civic, and hit a massive NYC pothole on the way to my
> friends' garage (level, enclosed). Shortly after the pothole I hear this
> scraping sound from my left front wheel, worse when I braked.
>
> So I get to the garage and get the wheel off to discover that the
> outside pad is worn completely down, compared with the right wheel which
> has still thick pads with tens of thousands of miles left on them.


INNER pad worn, outer pad not:
1) Caliper pins seized and caliper not floating
2) Outer pad seized on mount bracket and not floating

OUTER pad worn, inner pad not:
1) Inner pad seized on mount bracket and not floating

Brakes dragging:
1) Piston seized in caliper bore

Parking brake ineffective:
1) Aftermarket pads
2) Parking brake clevis seized and not pivoting
3) Parking brake cam shaft weather seal failed

Brakes pull to one side:
1) Sticky caliper piston on one side
2) Seized pad or caliper on one side


> The
> pothole must have knocked out the last vestiges of the pad, thereby
> causing the backing plate to score the rotor. DAMN! I don't think it's
> scored too badly to use--a bit within the outside half-inch of the
> rotation. I expect the new pads would seat OK after a few thousand
> miles. I'll sand it a tad to deglaze--180-grit OK?


50 grit is better. Sand all you want.


>
> OK, I flip the caliper up and find that the damned piston is stuck
> extended. The other side is retracted as it should be. Looks like I get
> to do my brakes now, too. Hell, may as well get my hands even dirtier...
> I'm game. Too bad my wife and I have to take the train to our
> Thanksgiving destination...
>
> Q is this: I didn't have time to deal with disconnecting the brake line
> to see if it's the hose that's frozen (it bends fine, but I guess that
> wouldn't tell me much). How should I proceed? Hose or caliper? I don't
> have the ability to spend days running back and forth between the car
> and the auto parts store, which would have to order the parts anyway, so
> I'd rather order more and return what I don't need.



You mean you can't push the piston in with a C-clamp?

Then the piston is seized in the caliper. Time for a rebuild or replacement
with remanufactured calipers. A tip here: replace the PAIR. If you don't
you'll likely find the brakes will pull to one side. Maybe try replacing
the one side, if you get pulling replace the other.

*Highly* unlikely anything's wrong with the lines. 99% of brake trouble is
with the calipers, sliders and pads.


>
> An item of note: the piston doesn't screw in on the front.


Because it has no parking brake.


> Don't know
> about the back,


On the back you have drums.



> but I can just use a C-clamp on the front. BTW, I picked
> up Bendix "OEM" pads before I thought to check if the caliper was
> stuck--these OK?


Those AREN'T "OEM". They are aftermarket "OEM style". Roll of the dice here
for you.


>
> Thanks as always for the collective wisdom here. I'd be less confident
> without you.
>


Collective wisdom can be found condensed here:
http://www.tegger.com/hondafaq/rusty...rakeintro.html


--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/