[TheForge] Krause/Nazel type air hammer

[Larry and Pat Brown]

Jeff.
The brake parts are still made the same way, its just that they don't want 
to sell rebuild kits from most stores. Some stores will still order them 
for you, but the counter person must be old enough to know what you are 
talking about. I think I was asleep when I wrote that post, but my body 
didn't know it, my response didn't make any sense to me this morning
L Brown

At 05:54 AM 12/8/2002 -0500, you wrote:
>Larry;
>
>    If this is true, then replacing the cups would not "rebuild" the
>cylinder.  I have rebuilt many that were only dripping a little
>without even honing the cylinder by simply cleaning and replacing the
>cups.  Also, if it's the piston fit alone that holds the pressure then
>honing the cylinder would trash that fit and it would not work with
>the same piston.  I only honed when the cylinder was scarred enough to
>damage the cups and have done rebuilds on irreplaceable cylinders that
>provided braking, but still dripped a little and would bleed off if
>you kept your foot on it long enough.
>     It's the cups and the directional fit that hold the pressure, put
>the cups in backwards and it won't brake and won't return to position
>when you let off of the pedal.   Over hone it and you are done too,
>the fit won't hold pressure.  There is barely enough room to stuff
>that cup into the bore along with the piston.
>
>        We may be talking of very different vintage brake parts here,
>I went from rebuilding out of necessity because that is how it was
>done to buying rebuilt cylinders because it was cheaper than spending
>my time.  I've not had but one cylinder fail since I was much younger
>and I just had that one replaced by my mechanic,  this was after I
>could no longer lean over a fender for any length of time.  Those days
>are coming to an end, I've been rebuilt too...
>
>    You are absolutely right about the end caps and such, they are to
>keep dirt out, but not the seals on the piston.  Again... your
>experience may well be "modern" compared to mine. I have rebuilt
>cylinders as recently as 15 years ago in this manner, but they were
>from "antique" cars.
>
>    However,  the heat issue is definitely a factor, pliable parts
>aren't going to hold up to heat at all.
>
>    Jeff   ><>
>
>
>
> > The pressure is held in the brake cylinders by the little pistons,
>the
> > rubber parts are to keep out the dust.
> > L Brown
> >