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Display Mesage #94230


Caliper leaks?
Written by ascterransin on 6/18/2010 at 01:29 pm

The front brake calipers can leak at the piston seals due to age and wear from
gunk build up on the brake pistons.

The rebuild is pretty simple (I'm setting myself up, I know) and unless you have
really unusual wear it's just replacing the piston seals and cleaning the
pistons & holes (non-technical terms loosely being used here).

I'm writing this moments before leaving for work so I didn't look up the part
number for the seals or check if there is a rebuild kit that would also include
slide boots, pins, a new dust cap or anything else besides just the seals. All I
replaced was the seals and I replaced them when I changed my brake pads at 75k
miles.

Here's a couple of photos of the brake caliper opened up an halfway cleaned.
http://www.flickr.com/photos/13012571@N07/4711164169/in/set-72157604541787768/

Steve Johnsen
Manassas Park, VA
'94 PC800 "Baiku"

--- In ipcrc@yahoogroups.com, "pc800dork" <dokiedo@...> wrote:
>
> Where would be the most likely place for a caliper to leak?
>
> What does a rebuild involve and what are the part number(s) for a rebuild kit?
>

Message Thread for message #94230

pc800dork
6/18/2010, 01:44 am
Caliper leaks?
Where would be the most likely place for a caliper to leak? What does a rebuild involve and what are the part number(s) for a rebuild kit?

    ascterransin
    6/18/2010, 01:29 pm
    Caliper leaks?
    The front brake calipers can leak at the piston seals due to age and wear from gunk build up on the brake pistons. The rebuild is pretty simple (I'm setting myself up, I know) and unless you have really unusual wear it's just replacing th

    pgboyd
    6/18/2010, 02:43 pm
    Caliper leaks?
    My calipers had a buildup of old fluid on them and it turned out to be leaking from the brake lines. I replaced the lines and haven't seen any new leakage yet. Phil Northern VA --- In

      pc800dork
      6/19/2010, 04:07 am
      Caliper leaks?
      Is it possible to get a leak from the anti-dive unit on the left fork? If so... is it possible to change the o-ring on it without losing too much fork oil? --- In

        ascterransin
        6/19/2010, 04:45 am
        Caliper leaks?
        Yes, a couple of people have had the anti-dive seal deteriorate and start leaking. I haven't opened mine up but I would guess it would be messy and you'd lose a lot of fork oil trying to replace it on the spot. It's not that hard to change th

          pc800dork
          6/19/2010, 03:25 pm
          Caliper leaks?
          >It's not that hard to change the fork oil and seals while you're at >it. Yeah - I know. I just did the fork seals about 2 weeks ago... That's why I need to fix it without removing the fork and hopefully too much oil.