Re: [ihc] Brakes, power steering

[David Bongo <dbongo@xxxxxxxxxxxxx>]

First, thanks for the verification that I tested the system properly. 
That was a major concern of mine.  With all my transmission problems on
the Cherokee (4th Tranny installed at around 30K miles) I tend to get
just a little paranoid at times.

I'll have to inspect the booster as best I can tomorrow.  My normal
mechanic is on vacation for almost a week and a half.  The other
mechanic there actually called me at home for directions on how to open
the hood, so I try to stick with the guy who, you know, knows how to pop
open the hood.  Still, I'm sure he can replace the booster if
necessary.  (There are certain things I won't do, and major brake work
is among them.  Brakes are, like, really important for normal people. 
But for me, with about 500 stops/day, they're vital.  I can't afford to
have a problem there.)

I'll also try and find out what setup I actually do have in there.  That
should make it a lot easier to get parts.  Hopefully I can reach the PO
tomorrow, even with Thanksgiving right around the corner.

Thanks,
Dave

"T.R.E.Jr." wrote:
> 
> ---Couldn't find anything through AC-Delco. I don't know if it would work,
> but have you asked about a master cylinder for the `74 Scout II with front
> drums? That would give you equal capacity reservoirs and maybe even a
> combination valve.
> 
> -T.R.E.Jr.
> -`73 Scout II (StoneThrower)
> -`51 Farmall H (Heinz)
> -`49 IH fridge (presently unnamed and in need of a compressor)
> -`49 Plymouth Special Deluxe 4-door Sedan (Papapalooza)
> 
> ----- Original Message -----
> From: "T.R.E.Jr." <T_R_E_Jr@domain.elided>
> To: "David Bongo" <dbongo@domain.elided>; "IHC Digest"
> <ihc-digest@domain.elided>
> Sent: Sunday, November 23, 2003 7:46 PM
> Subject: Re: [ihc] Brakes, power steering
> 
> > ---I would say it was the booster myself. Sounds like you performed the
> test
> > correctly, though it has been a while since I did it myself. The first
> thing
> > you do is get the air out of the system. Pump the brakes with the motor
> > running and release the pedal. Shut the motor down and press the brake
> once,
> > release, press again, release, press a third time and hold. Each time you
> > pressed the brake pedal, its height should have become greater. Now start
> > the motor with your foot still holding the pedal, it should sink 1" to 2"
> > but no more than 2". A new brake system should sink no more than 1" to
> > 1-1/4". My guess is that you have a collapsing line, a leak in the
> system...
> > maybe even in the master cylinder itself between the two pistons. I don't
> > see a proportioning valve being needed seeing as how you have dual disc,
> but
> > you would need the emergency cut off and brake warning switch.
> >
> > ---Cardone brake booster is $78.79 (#5473150) and the Master Cylinder is
> > $24.79 (#102693) for the `94 Mustang. Don't know if that will work for the
> > Scout, but I can't remember what year Cadillac had the rear disc. That
> would
> > be the new cheap-o plastic reservoir (not including the reservoir with the
> > master cylinder) and the reservoir I can't find a part number for, would
> > have to be from a junk yard or ... I will try a cross reference on the
> > master cylinder to other vehicles on AC-Delco's site.
> >
> > ---Master Cylinder for a `79 Lincoln Versailles is $16.80 (Cardone
> #101604)
> > and the booster is $152.70 (Cardone #527078)
> >
> > ---Thank you,
> > -T.R.E.Jr.
> > -`73 Scout II (StoneThrower)
> > -`51 Farmall H (Heinz)
> > -`49 IH fridge (presently unnamed and in need of a compressor)
> > -`49 Plymouth Special Deluxe 4-door Sedan (Papapalooza)
> >
> > ----- Original Message -----
> > From: "David Bongo" <dbongo@domain.elided>
> > To: "IHC Digest" <ihc-digest@domain.elided>
> > Sent: Sunday, November 23, 2003 6:11 PM
> > Subject: [ihc] Brakes, power steering
> >
> >
> > > I've got questions about the brakes and power steering on my Scout.
> > > It's a '74 RHD with a 258 engine and 727 tranny.  I use (or abuse) it
> > > delivering mail.
> > >

[cut]

> > >
> > > Second, the brakes.  I have the TSM rear disc brake conversion (with the
> > > Caddie calipers) and the PO told me that he changed the master cylinder
> > > out for a dual-disc model, and I believe that the booster is integral to
> > > the unit.  Anyways, the brakes have felt a bit funny of late, so I tried
> > > to remember the testing procedure.  I pumped the brakes while the truck
> > > was off, and never really got the stiff pedal I expected - I just kept
> > > getting the "normal" resistance I expected.  When I turned the truck on,
> > > the pedal didn't really go down any.  As I recall, this is indicitive of
> > > a bad booster or a vaccuum leak.  The truck stops just fine, and with
> > > minimal effort on my part (believe me, I'd know if it required massive
> > > additional force to stop it).  I can't diagnose a vacuum leak (don't
> > > know how, probably don't have the tools) but I can probably get my
> > > mechanic to do it for free.  If that checks out OK and the booster is
> > > bad, where do I go?
> > >
> > > Would a non-power system be viable (less to go wrong, but more effort to
> > > stop)?  Am I running a non-power system now?
> > >
> > > Or should I be considering going to hydra-boost, if the cylinder is bad?
> > >
> > > Or just chalk it up to bad luck and use the same basic setup again?
> > >
> > > Thanks,
> > >
> > > Dave