Frustrating Weekend

Ken H. · May 22, 2021

Last weekend was supposed to be our "Pandemic Coming-Out" -- our first GMC
excursion since Oct. 2019. A Sunshine Statesmen+Dixielanders rally at
Jekyll Island, GA, postponed last year, promised to be a great chance to
see a few old GMC friends.

We left before 9AM on Thursday and had an uneventful 32 mile ride to
Cordele, GA, where I had to TRY to use the brakes for the first time. In
the abandoned parking lot where I had to pull off, I finally found the
problem: I have a diamond-plate aluminum scoop under the front bumper with
an expanded AL grille in its front. Behind that, in front of the
radiator, is a long power steering fluid cooler, which I installed with the
Hydroboost. The inlet hose to that cooler had come off. It probably took
me an hour to cut the AL grille and bend it back so I could reattach the
hose.

Driving circles in the parking lot to bleed the PS pump, which I'd refilled
from the adjacent Walmart, I found that the brakes and steering worked, but
every call for boost resulted in a scream from the pump. We decided
to return home and replace the pump with one I rebuilt several years ago.
The drive home was uneventful except for the screams.

At home, I spent the rest of Thursday and an hour Friday replacing the
pump. BUT, when I powered it up for the first time, that "repaired" hose
blew off again and dumped PS fluid everywhere. So, I visited every (4)
parts store in town to find replacement hose. Finally, about 10 AM, we
began our dream trip again.

About 30 miles toward Cordele, I again lost brake and steeing boost. Sure
'nuff, that hose blew off again. So, we returned home again, for good,
aborting the trip.

Over the weekend, I located and repaired the problem. The short version of
the story is that between the cooler and the PS reservoir, I'd installed a
filter. I've no idea who recommended it, nor where I got it, but it's a
high quality aluminum cylinder with a big circlip to allow diassembly for
cleaning. I'd never cleaned it and was shocked to find only a tiny (3/8"
dia.) SS screen for media! It was completely clogged with a little
accumulation of tiny debris. The photos here show the device, the screen,
its contents, and the much larger AZ replacement suggested by Bob Stone:
https://photos.app.goo.gl/sFEBxEFwdjqLApMK6

IF you have a filter, be sure to keep it clean. Like any dynamic hydraulic
system, a blockage even in the low pressure downstream section (should be

LarryW · May 22, 2021

Interesting post Ken. I am interested in your evaluation of the Hydroboost install. Did it give you the extra braking power that you expected? What PS
pump did you use on your Cadillac engine? Other install issues?
Thanks Ken.
--
Larry
78 Royale w/500 Caddy
Menomonie, WI.

Matt Colie · May 22, 2021

Ken,

It is unfortunate that you did not get to your intended destination, but sometimes that is for the best.

At least you are at home and safe and have identified the issue. I will take that over trouble on the road any day.

Matt
--
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit

Ken H. · May 22, 2021

Larry,

I've never been able to get the 2200+psi brake line pressures some enjoy,
but then I didn't do all the changes Bob Stone recommends either. I merely
installed the Hydroboost with the OEM PS pump and I don't even remember
which MC. The front brakes are those that come with Manny's 1-Ton and the
rears those he provides with the Reaction Arms -- but without the parking
function. I've got to find out what all those calipers are for a system
capacities article we're working on. I have a dash gauge for front brake
line pressures (using a 1500 psi sender a the MC). It shows that for an
average stop, I apply 3-400 psi. For a hard stop I may reach 800 psi; a
panic stop, nearly all I can apply with both feet, reaches about 1300 psi
-- and will slide a rear tire on asphalt.

I just did a test drive of the repaired system. That filter has been
stiffening up my power steering for a long time. The coach steers much
easier now. The pump has a slight whine after its 30 mile dry run, but
seems OK otherwise. The brakes work just as before (they're not plumbed
through the cooler or the filter). I may still have a small leak
somewhere, or may have redistributed un-reachable PS fluid -- I'll try to
find out later -- it's noon and I'm about "done" for today.

Give Lucy a hug from me!

Ken H.

> Interesting post Ken. I am interested in your evaluation of the Hydroboost
> install. Did it give you the extra braking power that you expected? What PS
> pump did you use on your Cadillac engine? Other install issues?
> Thanks Ken.
> --
> Larry
> 78 Royale w/500 Caddy
> Menomonie, WI.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>

sgltrac · May 22, 2021

OG GM power steering pumps like ours don’t seem to mind being run dry.
Unlike many newer
European ones which will burn up immediately once they lose fluid.

Sully
Bellevue wa.
On Sat, May 22, 2021 at 8:54 AM Ken Henderson
wrote:

> Larry,
>
> I've never been able to get the 2200+psi brake line pressures some enjoy,
> but then I didn't do all the changes Bob Stone recommends either. I merely
> installed the Hydroboost with the OEM PS pump and I don't even remember
> which MC. The front brakes are those that come with Manny's 1-Ton and the
> rears those he provides with the Reaction Arms -- but without the parking
> function. I've got to find out what all those calipers are for a system
> capacities article we're working on. I have a dash gauge for front brake
> line pressures (using a 1500 psi sender a the MC). It shows that for an
> average stop, I apply 3-400 psi. For a hard stop I may reach 800 psi; a
> panic stop, nearly all I can apply with both feet, reaches about 1300 psi
> -- and will slide a rear tire on asphalt.
>
> I just did a test drive of the repaired system. That filter has been
> stiffening up my power steering for a long time. The coach steers much
> easier now. The pump has a slight whine after its 30 mile dry run, but
> seems OK otherwise. The brakes work just as before (they're not plumbed
> through the cooler or the filter). I may still have a small leak
> somewhere, or may have redistributed un-reachable PS fluid -- I'll try to
> find out later -- it's noon and I'm about "done" for today.

>
> Give Lucy a hug from me!
>
> Ken H.
>
>

>
> > Interesting post Ken. I am interested in your evaluation of the
> Hydroboost
> > install. Did it give you the extra braking power that you expected? What
> PS
> > pump did you use on your Cadillac engine? Other install issues?
> > Thanks Ken.
> > --
> > Larry
> > 78 Royale w/500 Caddy
> > Menomonie, WI.
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> >
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>

Ken H. · May 22, 2021

Yeah, I've run them dry before without trouble. Their construction, with
just a rotor containing centrifugally-extended SS "blades" as the
functional components means that if there's a little residual lubricant
available, they should do OK. I'm not sure where the whine comes from, but
a lot of them do it even if never abused.

Ken H.

> OG GM power steering pumps like ours don’t seem to mind being run dry.
> Unlike many newer
> European ones which will burn up immediately once they lose fluid.
>
> Sully
> Bellevue wa.
> On Sat, May 22, 2021 at 8:54 AM Ken Henderson

>
> > Larry,
> >
> > I've never been able to get the 2200+psi brake line pressures some enjoy,
> > but then I didn't do all the changes Bob Stone recommends either. I
> merely
> > installed the Hydroboost with the OEM PS pump and I don't even remember
> > which MC. The front brakes are those that come with Manny's 1-Ton and
> the
> > rears those he provides with the Reaction Arms -- but without the parking
> > function. I've got to find out what all those calipers are for a system
> > capacities article we're working on. I have a dash gauge for front brake
> > line pressures (using a 1500 psi sender a the MC). It shows that for an
> > average stop, I apply 3-400 psi. For a hard stop I may reach 800 psi; a
> > panic stop, nearly all I can apply with both feet, reaches about 1300 psi
> > -- and will slide a rear tire on asphalt.
> >
> > I just did a test drive of the repaired system. That filter has been
> > stiffening up my power steering for a long time. The coach steers much
> > easier now. The pump has a slight whine after its 30 mile dry run, but
> > seems OK otherwise. The brakes work just as before (they're not plumbed
> > through the cooler or the filter). I may still have a small leak
> > somewhere, or may have redistributed un-reachable PS fluid -- I'll try to
> > find out later -- it's noon and I'm about "done" for today.

> >
> > Give Lucy a hug from me!
> >
> > Ken H.
> >
> >

> >
> > > Interesting post Ken. I am interested in your evaluation of the
> > Hydroboost
> > > install. Did it give you the extra braking power that you expected?
> What
> > PS
> > > pump did you use on your Cadillac engine? Other install issues?
> > > Thanks Ken.
> > > --
> > > Larry
> > > 78 Royale w/500 Caddy
> > > Menomonie, WI.
> > > _______________________________________________
> > > GMCnet mailing list
> > > Unsubscribe or Change List Options:
> > >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> >
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>

sgltrac · May 22, 2021

Probably a little air still suspended in the fluid. I bet after a couple
starts and stops with sitting in between and it goes away.

Sully
Bellevue wa

On Sat, May 22, 2021 at 1:14 PM Ken Henderson
wrote:

> Yeah, I've run them dry before without trouble. Their construction, with
> just a rotor containing centrifugally-extended SS "blades" as the
> functional components means that if there's a little residual lubricant
> available, they should do OK. I'm not sure where the whine comes from, but
> a lot of them do it even if never abused.
>
> Ken H.
>
>

>
> > OG GM power steering pumps like ours don’t seem to mind being run dry.
> > Unlike many newer
> > European ones which will burn up immediately once they lose fluid.
> >
> > Sully
> > Bellevue wa.
> > On Sat, May 22, 2021 at 8:54 AM Ken Henderson

> >
> > > Larry,
> > >
> > > I've never been able to get the 2200+psi brake line pressures some
> enjoy,
> > > but then I didn't do all the changes Bob Stone recommends either. I
> > merely
> > > installed the Hydroboost with the OEM PS pump and I don't even remember
> > > which MC. The front brakes are those that come with Manny's 1-Ton and
> > the
> > > rears those he provides with the Reaction Arms -- but without the
> parking
> > > function. I've got to find out what all those calipers are for a
> system
> > > capacities article we're working on. I have a dash gauge for front
> brake
> > > line pressures (using a 1500 psi sender a the MC). It shows that for
> an
> > > average stop, I apply 3-400 psi. For a hard stop I may reach 800 psi;
> a
> > > panic stop, nearly all I can apply with both feet, reaches about 1300
> psi
> > > -- and will slide a rear tire on asphalt.
> > >
> > > I just did a test drive of the repaired system. That filter has been
> > > stiffening up my power steering for a long time. The coach steers much
> > > easier now. The pump has a slight whine after its 30 mile dry run, but
> > > seems OK otherwise. The brakes work just as before (they're not
> plumbed
> > > through the cooler or the filter). I may still have a small leak
> > > somewhere, or may have redistributed un-reachable PS fluid -- I'll try
> to
> > > find out later -- it's noon and I'm about "done" for today.

> > >
> > > Give Lucy a hug from me!
> > >
> > > Ken H.
> > >
> > >

> > >
> > > > Interesting post Ken. I am interested in your evaluation of the
> > > Hydroboost
> > > > install. Did it give you the extra braking power that you expected?
> > What
> > > PS
> > > > pump did you use on your Cadillac engine? Other install issues?
> > > > Thanks Ken.
> > > > --
> > > > Larry
> > > > 78 Royale w/500 Caddy
> > > > Menomonie, WI.
> > > > _______________________________________________
> > > > GMCnet mailing list
> > > > Unsubscribe or Change List Options:
> > > >
> > > _______________________________________________
> > > GMCnet mailing list
> > > Unsubscribe or Change List Options:
> > >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> >
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>

Ken H. · May 22, 2021

I hope -- but with my single-ear hearing, it don't much matter!

Ken H.

> Probably a little air still suspended in the fluid. I bet after a couple
> starts and stops with sitting in between and it goes away.
>
> Sully
> Bellevue wa
>
> On Sat, May 22, 2021 at 1:14 PM Ken Henderson

>
> > Yeah, I've run them dry before without trouble. Their construction, with
> > just a rotor containing centrifugally-extended SS "blades" as the
> > functional components means that if there's a little residual lubricant
> > available, they should do OK. I'm not sure where the whine comes from,
> but
> > a lot of them do it even if never abused.
> >
> > Ken H.
> >
> >

> >
> > > OG GM power steering pumps like ours don’t seem to mind being run dry.
> > > Unlike many newer
> > > European ones which will burn up immediately once they lose fluid.
> > >
> > > Sully
> > > Bellevue wa.
> > > On Sat, May 22, 2021 at 8:54 AM Ken Henderson

> > >
> > > > Larry,
> > > >
> > > > I've never been able to get the 2200+psi brake line pressures some
> > enjoy,
> > > > but then I didn't do all the changes Bob Stone recommends either. I
> > > merely
> > > > installed the Hydroboost with the OEM PS pump and I don't even
> remember
> > > > which MC. The front brakes are those that come with Manny's 1-Ton
> and
> > > the
> > > > rears those he provides with the Reaction Arms -- but without the
> > parking
> > > > function. I've got to find out what all those calipers are for a
> > system
> > > > capacities article we're working on. I have a dash gauge for front
> > brake
> > > > line pressures (using a 1500 psi sender a the MC). It shows that for
> > an
> > > > average stop, I apply 3-400 psi. For a hard stop I may reach 800
> psi;
> > a
> > > > panic stop, nearly all I can apply with both feet, reaches about 1300
> > psi
> > > > -- and will slide a rear tire on asphalt.
> > > >
> > > > I just did a test drive of the repaired system. That filter has been
> > > > stiffening up my power steering for a long time. The coach steers
> much
> > > > easier now. The pump has a slight whine after its 30 mile dry run,
> but
> > > > seems OK otherwise. The brakes work just as before (they're not
> > plumbed
> > > > through the cooler or the filter). I may still have a small leak
> > > > somewhere, or may have redistributed un-reachable PS fluid -- I'll
> try
> > to
> > > > find out later -- it's noon and I'm about "done" for today.

> > > >
> > > > Give Lucy a hug from me!
> > > >
> > > > Ken H.
> > > >
> > > >

> > > >
> > > > > Interesting post Ken. I am interested in your evaluation of the
> > > > Hydroboost
> > > > > install. Did it give you the extra braking power that you expected?
> > > What
> > > > PS
> > > > > pump did you use on your Cadillac engine? Other install issues?
> > > > > Thanks Ken.
> > > > > --
> > > > > Larry
> > > > > 78 Royale w/500 Caddy
> > > > > Menomonie, WI.
> > > > > _______________________________________________
> > > > > GMCnet mailing list
> > > > > Unsubscribe or Change List Options:
> > > > >
> > > > _______________________________________________
> > > > GMCnet mailing list
> > > > Unsubscribe or Change List Options:
> > > >
> > > _______________________________________________
> > > GMCnet mailing list
> > > Unsubscribe or Change List Options:
> > >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> >
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>

Tom Katzenberger · May 22, 2021

Ken,

I am very happy to hear you and yours are all OK and the coach is un-harmed. Thank you for the details.

I am involved in installing the Applied Phase II Disc brake system with Dave Lanzi's sensitized booster and the P-80 Master Cylinder. Your information
is helpful.

Do you still recommend the filter?

Tom K.
--
Tom & Oki Katzenberger,
Kingsville, Maryland,
1977 23' Birchaven, 455 C.I.D.

dave king · May 22, 2021

En H., what happened toyou with thepower steering filter is what I call the
Law of Unintended Consequences. Some call it Murphys Law. Glad it sort of worked out.
Sounds something like Ken Burton's adventure with the horse trailer tires.
77 degree F in Toronto right now 6:30PM SATURDAY.
--
DAVE KING
lurker, wannabe
Toronto, Ontario, Canada

Ken H. · May 22, 2021

Tom,

Yes, despite my poor choice of a filter, I do recommend using one because
of the debris that one caught in just a few years of use. But NOT a tiny
one like I had; the Auto Zone 70702 as recommended by Bob Stone looks to be
a good choice; there may be cheaper ones that work just as well. Of
course, that recommendation assumes that you've removed or gutted the
screen filter at the outlet of the hydraulic wiper motor (the brass
nipple). If you haven't done anything with that one, you should at least
back-flush it with a good solvent. You may find an improvement in the
power steering.

Ken H.

> Ken,
>
> I am very happy to hear you and yours are all OK and the coach is
> un-harmed. Thank you for the details.
>
> I am involved in installing the Applied Phase II Disc brake system with
> Dave Lanzi's sensitized booster and the P-80 Master Cylinder. Your
> information
> is helpful.
>
> Do you still recommend the filter?
>
> Tom K.
> --
> Tom & Oki Katzenberger,
> Kingsville, Maryland,
> 1977 23' Birchaven, 455 C.I.D.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>

john r. lebetski · May 22, 2021

Ken I saw Bob last week and he has lots of new data on MC volume reserve capacities. There is some, but minimal reserve on an all stock coach. As
long as there is some reserve even a couple CCs, all is well. Go bigger on the front and or rear slave cylinders and you can run out of MC capacity,
at which time pressure rise flatlines. This may be why no 2200 for you. He hopes to present findings this fall.
On the bright side—- you now have very clean PS fluid, and you have reminded me to clean the factory pipe filter so double win.

--
John Lebetski
Woodstock, IL
77 Eleganza II

Ken H. · May 22, 2021

Doing just a little research with a Google search for "3/8" power steering
filter", I found a lot of options, including an Edelman 70700 which looks,
and by specification seems, to be identical to the Duralast 70702, at 1/2
the price, even with added shipping cost:
https://www.newegg.com/p/N82E16889212577?item=N82E16889212577&source=region&nm_mc=knc-googleadwords-pc&cm_mmc=knc-googleadwords-pc-_-pla-_-power+steering+pumps%2c+hoses%2c+kits%2c+switches%2c+connectors-_-N82E16889212577&gclid=Cj0KCQjw16KFBhCgARIsALB0g8LGi1tkNZnRphRNuHTcPvrP64h9cMbhLpF37cfKi1KazNs7I79GAG0aAh7HEALw_wcB&gclsrc=aw.ds
or
bit.ly/3c5lM1p

However, one should review the 1Star ratings on Amazon -- 15% is a lot of
bad reports.

Also, I found, much to my surprise, that my old, tiny SS screen, was a Cardone
20-0038F. It has only 7 ratings, all 5Star, which is absurd, based on my
experience with its tiny debris capacity. There appear to be two design
variations, but with the same size.

You pays your bucks & takes your chances.

Ken H.

On Sat, May 22, 2021 at 7:25 PM Ken Henderson
wrote:

> Tom,
>
> Yes, despite my poor choice of a filter, I do recommend using one because
> of the debris that one caught in just a few years of use. But NOT a tiny
> one like I had; the Auto Zone 70702 as recommended by Bob Stone looks to be
> a good choice; there may be cheaper ones that work just as well. Of
> course, that recommendation assumes that you've removed or gutted the
> screen filter at the outlet of the hydraulic wiper motor (the brass
> nipple). If you haven't done anything with that one, you should at least
> back-flush it with a good solvent. You may find an improvement in the
> power steering.
>
> Ken H.
>
>

>
>> Ken,
>>
>> I am very happy to hear you and yours are all OK and the coach is
>> un-harmed. Thank you for the details.
>>
>> I am involved in installing the Applied Phase II Disc brake system with
>> Dave Lanzi's sensitized booster and the P-80 Master Cylinder. Your
>> information
>> is helpful.
>>
>> Do you still recommend the filter?
>>
>> Tom K.
>> --
>> Tom & Oki Katzenberger,
>> Kingsville, Maryland,
>> 1977 23' Birchaven, 455 C.I.D.
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>>
>

Ken H. · May 22, 2021

John,

I'm more than fully aware of Bob S's information: I'm working with him and
JR Wright toward informing the community of the limitations you're
referring to -- when we finish collecting all the data and formatting it.
Just yesterday sent a spreadsheet to them showing calculations of volumes
for all known calipers and MC's. I've got to dig into and include wheel
cylinders. Any verifiable dimensional information you have on cylinders,
calipers, or MC's, preferably with associated applications, will be
appreciated now by me and eventually by the whole GMC community (if not
wider).

I hope to make it easy to evaluate any combination of components vs MC
capacity.

Ken H.

On Sat, May 22, 2021 at 7:37 PM John R. Lebetski
wrote:

> Ken I saw Bob last week and he has lots of new data on MC volume reserve
> capacities. There is some, but minimal reserve on an all stock coach. As
> long as there is some reserve even a couple CCs, all is well. Go bigger
> on the front and or rear slave cylinders and you can run out of MC capacity,
> at which time pressure rise flatlines. This may be why no 2200 for you. He
> hopes to present findings this fall.
> On the bright side—- you now have very clean PS fluid, and you have
> reminded me to clean the factory pipe filter so double win.
>
> --
> John Lebetski
> Woodstock, IL
> 77 Eleganza II
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>

Tom Katzenberger · May 22, 2021

Thank you Ken,

Your advise is well received and I will install the filter as you stated.

Take care and I hope to see you soon,
Tom K
--
Tom & Oki Katzenberger,
Kingsville, Maryland,
1977 23' Birchaven, 455 C.I.D.

wally anderson · May 23, 2021

> Last weekend was supposed to be our "Pandemic Coming-Out" -- our first GMC
>
>
>
> Over the weekend, I located and repaired the problem. The short version of
> the story is that between the cooler and the PS reservoir, I'd installed a
> filter. I've no idea who recommended it, nor where I got it, but it's a
> high quality aluminum cylinder with a big circlip to allow diassembly for
> cleaning. I'd never cleaned it and was shocked to find only a tiny (3/8"
> dia.) SS screen for media! It was completely clogged with a little
> accumulation of tiny debris. The photos here show the device, the screen,
> its contents, and the much larger AZ replacement suggested by Bob Stone:
> https://photos.app.goo.gl/sFEBxEFwdjqLApMK6
>
> IF you have a filter, be sure to keep it clean. Like any dynamic hydraulic
> system, a blockage even in the low pressure downstream section (should be
> blockage (about 1300 psi here). Results like mine can be expected. The
> GMC can be driven easily straight ahead without boost, but the brakes are
> about 20% as effective.
>
> Maybe next time we'll make it there!
>
> Ken H.
> Americus, GA
> '76 X-Birchaven w/Cad500/Howell EFI & EBL,
> Manny Brakes & 1-Ton, Troy-Bilt APU, etc., etc., etc.
> www.gmcwipersetc.com
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:

Thanks for the heads up, I'll be swapping to the larger filter
--
Wally Anderson
Omaha NE
75 Glenbrook
Megasquirt III injection
Bob Stone hydroBOOOOST
Manny reaction arm system
Branscombe Kelsey Hayes park brake
http://wallyandsue.blogspot.com/

RJW · May 23, 2021

> Tom,
>
> Yes, despite my poor choice of a filter, I do recommend using one because
> of the debris that one caught in just a few years of use. But NOT a tiny
> one like I had; the Auto Zone 70702 as recommended by Bob Stone looks to be
> a good choice; there may be cheaper ones that work just as well. Of
> course, that recommendation assumes that you've removed or gutted the
> screen filter at the outlet of the hydraulic wiper motor (the brass
> nipple). If you haven't done anything with that one, you should at least
> back-flush it with a good solvent. You may find an improvement in the
> power steering.
>
> Ken H.

Well this opens up another can of worms for me and I suspect others. I removed my filter when I removed my hydraulic wiper motor to install your
electric wiper system. Should I be worried that I don't have a filter for power steering hydraulics? I have Lenzi's rear disk brakes so I don't have
power steering pump assisted brakes.

--
Richard
76 Palm Beach
SE Michigan
www.PalmBeachGMC.com

Coop Roller Cam 455, Howell TBI + EBL, 3.42 FD, Quadra Bag, Macerator, Lenzi stuff, Manny Tranny etc.

Ken H. · May 23, 2021

Richard,

Yes, we've stumbled onto something I should at least recommend in the wiper
instructions: Removing the hydraulic wiper motor removes the filter which
was included to protect the entire system. The PS pump and steering gear
box still need a filter. After still more reading of 1Star reviews on
Amazon, and some other research, I'm now more inclined toward the
steel-encased, non-cleanable versions. Their major shortcoming seems to be
rust resistance in the rust belt. They seem less likely to come apart than
their plastic-housed competition (like I'm now using).

JWIThink,

Ken H.

> > Tom,
> >
> > Yes, despite my poor choice of a filter, I do recommend using one because
> > of the debris that one caught in just a few years of use. But NOT a tiny
> > one like I had; the Auto Zone 70702 as recommended by Bob Stone looks to
> be
> > a good choice; there may be cheaper ones that work just as well. Of
> > course, that recommendation assumes that you've removed or gutted the
> > screen filter at the outlet of the hydraulic wiper motor (the brass
> > nipple). If you haven't done anything with that one, you should at least
> > back-flush it with a good solvent. You may find an improvement in the
> > power steering.
> >
> > Ken H.
>
> Well this opens up another can of worms for me and I suspect others. I
> removed my filter when I removed my hydraulic wiper motor to install your
> electric wiper system. Should I be worried that I don't have a filter for
> power steering hydraulics? I have Lenzi's rear disk brakes so I don't have
> power steering pump assisted brakes.
>
>
>
> --
> Richard
> 76 Palm Beach
> SE Michigan
> www.PalmBeachGMC.com
>
>
> Coop Roller Cam 455, Howell TBI + EBL, 3.42 FD, Quadra Bag, Macerator,
> Lenzi stuff, Manny Tranny etc.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>

RJW · May 23, 2021

> Richard,
>
> Yes, we've stumbled onto something I should at least recommend in the wiper
> instructions: Removing the hydraulic wiper motor removes the filter which
> was included to protect the entire system. The PS pump and steering gear
> box still need a filter. After still more reading of 1Star reviews on
> Amazon, and some other research, I'm now more inclined toward the
> steel-encased, non-cleanable versions. Their major shortcoming seems to be
> rust resistance in the rust belt. They seem less likely to come apart than
> their plastic-housed competition (like I'm now using).
>
> JWIThink,
>
> Ken H.

Ken,

Oh well, what's another project in getting my coach roadworthy this year? This would be a good time for me to add that filter since I am in the middle
of rebuilding (correcting what previous shops including Cinnabar and Buskrik did 23 + years ago) my front suspension and steering system. I always
wondered why my coach was hard to drive the past 23 years and now I know why.

Thanks for keeping us informed on your fun.

--
Richard
76 Palm Beach
SE Michigan
www.PalmBeachGMC.com

Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water
heaters.

mark sawyer · May 25, 2021

> Richard,
> Their major shortcoming seems to be
> rust resistance in the rust belt. They seem less likely to come apart than
> their plastic-housed competition (like I'm now using).
>
> JWIThink,
>
> Ken H.

You can always go with the Magnefine... It has a stainless case... And a 5 star rating to boot...

https://www.amazon.com/Magnefine-Magnetic-Inline-Transmission-Steering/dp/B0787KWZPS/ref=sr_1_1_sspa?dchild=1&keywords=power+steering+filter&qid=1621982275&sr=8-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUFVNVY0MVVRQUMwT0omZW5jcnlwdGVkSWQ9QTA2ODYwNjUzNllFSkFZMDc3RVQ4JmVuY3J5cHRlZEFkSWQ9QTAxODgzMDExTEtQU1k2WEI3TUhKJndpZGdldE5hbWU9c3BfYXRmJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ==
--
Mark S. '73 Painted Desert,
Manny 1 Ton Front End,
Howell Injection,
Leigh Harrison 4bag and Rear Brakes,
Fort Worth, TX

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