Re: Power Steering Pump

["T.R.E. Jr." <T_R_E_Jr@xxxxxxxxxxx>]

---Been watching this and think it is about time I add my $0.02. There are 
two different types of power steering pumps used on the Scout II that I know 
of. More is different than the pressure they produce. However much pressure 
the pump produces, it should never exceed 1200psi. Anyhow, the most obvious 
difference in the two types is that one has two bearings on the shaft and 
the other has one. The one with the two bearings is the older style and has 
a bearing by the pulley and a bearing by the back of the pump to support the 
rear of the shaft. The newer style looks like the basic GM power steering 
pump used on the `78 Impala, Caprice, etc. w/350. I have been told that the 
327 Chitvies from `64-`69 have the pump that is more rounded in shape 
whereas the one that is most likely on your Scout is more tear drop in 
shape. The one with the two bearings (the older style AFAIK like on the 327) 
can handle put out more pressure. This is the one with the rounded body. We 
used one as the hydraulic pump of a snow plow that my friend's father had in 
his `64 Scout. I replaced two brand new power steering pumps for him before 
we installed the older styled one. The older styled one lasted three years 
of some of the worst Northern Michigan snowstorms without so much as 
squealing once. The only reason tests didn't continue is, the Scout was 
parked and never looked at again after the death of his son.

---I will try to find more info on the pumps and where to find them. The 
rounded style requires an adapter for the pump end of the high pressure 
line... unless someone knows of a line that will work. Other than that the 
pumps are a bolt on replacement as long as the studs are in the same 
location as on your pump.

---I have on of the round-bodied pumps in my shed, today I just might have 
time to get into the shed and take inventory, check for window regulators, 
motor mount brackets and list what is for sale in parts. Anything else?

---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: "Urvig, Chad A" <chad.urvig@domain.elided>
To: <scoutxx@domain.elided>
Cc: <ihc-digest@domain.elided>
Sent: Wednesday, July 02, 2003 9:34 AM
Subject: RE: Power Steering Pump


> I'll check into a pump for hydraboost brakes to prevent feedback
> problems. Would a GM pump bolt up on my engine or will have to fabricate
> brackets?  I'd rather not have too...
>
> I think the source of my overheating problems is that my steering sector
> is probably going bad and my front locker didn't help (there's
> definitely binding when it's locked in).
>
> > Date: Tue, 1 Jul 2003 18:41:03 -0500
> > From: "ScoutXX" <scoutxx@domain.elided>
> > Subject: Power Steering Pump
> >
> > Allan, Not so.  :)
> >
> > 1st, PS pumps are not the same. One quick look at a part
> > number/spec book will tell you that. They have different
> > output pressures for different applications for one thing.
> >
> > Next, you can't just run any pump if you are going
> > hydroboost. The HB PSP has an extra fitting on the case for
> > the return line. Some guys just try to splice into the PS box
> > return line, but about half of them get feedback in the
> > steering when they hit the brakes.
> >
> > An additional cooler is a good idea, but isn't going to fix
> > your problem. Lots of guys run 33's and larger without
> > coolers and don't burn up pumps. I ran 35's on a daily driver
> > full size Chevy PU for 8 years with the factory pump. If you
> > do add a cooler just make sure it mounted where it gets some
> > air flow or use a dedicated fan.
> >
> > So anyway, there's an easy fix for your problem. Just pickup
> > a Cadillac pump. These are set up to let you turn the tires
> > on a heavy (5500lb) vehicle with one finger.
> >
> > If you still aren't satisfied with the steering effort just
> > remove the pressure valve from the back of the pump and shim
> > the spring with a very thin washer. This will boost your
> > pressure big time. Be warned - make sure you have good hoses.
> > You don't want to have a fire.
> >
> > Just to be safe I would also recommend jacking up the axle
> > and making sure nothing is binding. Ball joints, etc.
> >
> > Darrel