View Single Post
  #6 (permalink)  
Old 06 Jun 2004, 10:55 pm
motsco_ _
Guest
 
Posts: n/a
Default Re: Testing a Brake Master Cylinder

alan wrote:
> CaptainKrunch wrote:
>
>> Bingo on Master Cylinder. No big deal I got mine from a local Schucks
>> on my
>> 96 Accord EX with ABS for about 80$$$.
>>
>> What happens is the piston in the master is accustomed to traveling in a
>> certain range when the pedal is pressed. When the brakes are redone and
>> bled the pedal is usually pushed to the floor repeatedly to bleed the
>> brakes. Well debris builds up on the cylinder wall of the master and
>> when
>> bleeding the piston travels over this previously unused area. This
>> scuffs
>> up or cuts the seal a bit and this is what causes your leakdown. You
>> will
>> notice it especially on a downhill stop.
>>

>
> Will it help prevent this builddup if we push the pedal all the way to
> the floor (maybe by opening one bleed valve) a few times every few
> thousand miles?



++++++++++++++++

I think Alan is inferring that the guy who bled your brakes made the
fatal (for your master cylinder / pocketbook) mistake of pushing the
pedal to the floor while bleeding the brakes, which ratched the heck out
of your seal, because it's never been down that part of the bore
before.... What can ya do ? ? ?

Find a better mechanic and get it replaced. OR fight with the existing
guy... :-(

'Curly'

Reply With Quote