[V8] well lets beat this brake acumulator to death again

Wed Mar 16 11:05:16 EST 2005

Well - in light of this, I will re-post my filter idea:

I got a generic 3/8" inline automatic transmission filter - designed to go in
the cooling line, and installed it in the rack return line of my power steering
system. I did this after my original pump started to leak. It has been there for
a few years now, and I have replaced it once (as routine maintenance).

I have also switched over to "Chevron RYKON Premium 32" hydraulic oil and
because I have 5 gallons of the stuff, I have been flushing the system out
periodically. I just did it a few days ago, and the fluid now comes out pretty
clear where before it was black, and the screen in the tank had a rubbery sludge
on it before where now it is clean.

Since doing this I had the "pump to rack line" hose go bad, but no seals are
leaking anywhere. The car has about 140K on it.

On the RYKON oil, I have not really had it in there long enough to know for sure
about the long term effects, but I went through a pretty cold winter with it and
I had no issues at all. The only thing I have noticed may have nothing to do
with the oil and in fact be the reason some of you do not like the Servo Tronic
racks.
The issue is sometimes during high speed (for me) cornering I can feel what
appears to be the assist level fluctuating during the corner. It is a little
un-nerving because it feels like the assist comes on strong and the wheel gets
real light. I don't normally drive that hard so I may have just never noticed
before.
Has anyone else noticed this rack behaviour?

Dave

Quoting Charles Wurts <cwurts12 at mindspring.com>:

> You are jogging my memory.  I was faced with a nearly trashed front
> seal a few weeks ago.....  The favorite local techs took care of it for
> me in shortish order.  I was initially told that the first replacement
> pump was bad, so another one had to be ordered.....
>
> Later, in a casual conversation with my favorite local guys, they
> admitted that the "junk floating around in the system" had in fact
> clogged and compromised the new pump.  They only realized it while
> doing the second replacement.  So it sounds like the first replacement
> pump was probably good, but was severely slowed by the junk.  FWIW.
>
> Charlie
>
>
> On Mar 15, 2005, at 10:44 AM, dsaad at icehouse.net wrote:
>
> > WAG O THE DAY:
> >
> > I can't quite imagine how the brake section could fail completly - but
> > as I
> > recall, this is a plunger type pump - so maybe one of the poppet
> > valves under
> > the X caps is stuck open? If this is true then either some junk is
> > floating
> > around in the system and got stuck in the valve or the valve just
> > failed.
> > Neither seems likely to me but the thing to do is pull the pump and
> > tear it
> > down. What you find there will dictate the next step.
> >
> > If a line is plugged, it would have to be a serious plug. I think this
> > pump
> > makes around 3000 to 5000 PSI.
> >
> > What about the brake servo? How does that work?
> >
> >
> > Dave
> >
> >
> > Quoting R Broberg <rbroberg at wi.rr.com>:
> >
> >> My recollection is that the pump provides two separate services. One
> >> higher
> >> pressure than the other, for brakes and steering.  Presumably, one
> >> can fail
> >> without the other.
> >> Roland
> >>
> >> Roland Broberg
> >> Broberg Engineering-BECO
> >> Delafield. Wisconsin USA
> >> ----- Original Message -----
> >> From: "Kneale Brownson" <knotnook at traverse.com>
> >> To: <readytow at earthlink.net>; <v8 at audifans.com>
> >> Sent: Monday, March 14, 2005 4:25 AM
> >> Subject: Re: [V8] well lets beat this brake acumulator to death again
> >>
> >>
> >>> Sounds like either the pump's internal plumbing or the hose to the
> >>> accumulator is plugged somehow.  You might check the banjo bolt for
> >>> the
> >>> bomb hose to see if it has a screen plugged.
> >>>
> >>> At 07:09 PM 3/13/2005 -0800, kevin kyzar wrote:
> >>>> to all who answered, thank you. in respones to your questions, the
> >>>> power
> >>>> steering works fine, the vehicle had been idled w/o the belt
> >>>> installed.
> >> but
> >>>> the belt is now installed.  i pulled the "X" plugs on the front of
> >>>> the
> >> pump
> >>>> and verified the eccentrics in the pump are moving.  but still
> >>>> nothing on
> >>>> the brakes.  and with the belt installed, and the motor idling, no
> >>>> fluid
> >>>> from the pump to the bomb.  I'm stumped!
> >>>
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> >>>
> >>
> >>
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> >
> >
> >
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>