[s-cars] High pressure hydraulic line, part II

[Kirby Smith]

Igor:

The o-ring data, as best one can easily measure a soft o-ring without
special tools, are as follows. I used vernier calipers.  Note that the
o-rings are red, and I presume silicone.  They do seem a bit soft to be
Viton.  They are a bit brighter red than US industry used to use for
silicone.

O-ring OD = 16.5 mm
O-ring ID = 11.5 mm
O-ring section diameter = 2.5 mm

retaining cavity dimensions (more difficult to measure)
center OD = 12.0 mm
outer ID = 17.5 mm
well depth = 2 mm

A Parker o-ring catalog should show  a ring very close to these
dimensions and provide retention cavity dimensions that agree
approximately with the numbers above.  I have forgotten whether o-rings
are like bearings and sold in metric sizes, or in English unit sizes. 
If the latter you will have to convert.

kirby


Igor Kessel wrote:
> 
> Kirby Smith wrote:
> 
> > Igor:
> >
> > As I also recall from the mental archivers, without the restrictor some
> > users found significant pulsing noises.  The restrictor can be cleaned
> > when the hose is rebuilt.  I have a sectioned hose in my garage.  It is
> > a small porous orifice.  Probably clogged with hose lining, if in fact
> > it is materially clogged.  Also the bolts at each end (different part
> > numbers) have a screen that needs to be cleaned.
> >
> > However, the real reason for slow repressurization is really that the
> > pressure has bled off and the bomb capacity is large.  Either the bomb
> > check valve is bad, or the valve in the master brake assembly is bad.
> >
> 
> Kirby,
> can you do me a fovour? I am about tpo place an order with McMaster for
> some Viton O-rings. Since you have the hose laying in your garage, can
> you measure the size of the O-rings for that restrictor? I assume the
> hose has some kind of a screw-on connector in the middle, twhere the
> restrictor sits. I'd like to try either claning or completely removing
> the restrictor. Thank you very much!
> 
> --
> Igor Kessel
> two turbo quattros