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Power Steering Pumps! [message #279176] Fri, 05 June 2015 22:29 Go to next message
Jon payne is currently offline  Jon payne   United States
Messages: 495
Registered: May 2008
Karma: 1
Senior Member
Guys,

Having the worst luck with Power steering pumps (I'll make a separate post about that later)

Regarding the recent posts on this subject, I have seen a lot of good info but no solid conclusions. I read the manual on how the pump works and have a good idea how the pressure/flow is controlled. That got me thinking of all the different applications, the pump itself is most likely the same from one application to the next. Primary differences between applications are the flow control valve, spring and fitting and of course the reservoir. So depending on the application these parts will vary, but the actual pump is the same. Agree?

So if my assumption is correct, and if I get a pump for a 76 Toronado, for example, and changed over the flow control valve, spring, fitting from the original pump, and if need be the reservoir, it should work just fine. Correct?

Jon



Jon Payne
76 Palm Beach
Westfield,IN
Re: Power Steering Pumps! [message #279177 is a reply to message #279176] Fri, 05 June 2015 22:45 Go to previous messageGo to next message
Bob de Kruyff   United States
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
Senior Member
Jon Payne wrote on Fri, 05 June 2015 21:29
Guys,

Having the worst luck with Power steering pumps (I'll make a separate post about that later)

Regarding the recent posts on this subject, I have seen a lot of good info but no solid conclusions. I read the manual on how the pump works and have a good idea how the pressure/flow is controlled. That got me thinking of all the different applications, the pump itself is most likely the same from one application to the next. Primary differences between applications are the flow control valve, spring and fitting and of course the reservoir. So depending on the application these parts will vary, but the actual pump is the same. Agree?

So if my assumption is correct, and if I get a pump for a 76 Toronado, for example, and changed over the flow control valve, spring, fitting from the original pump, and if need be the reservoir, it should work just fine. Correct?

Jon


I think you are mostly correct. There are differences in overall capacities, but for the timeframe of our coaches the pumps were very similar.


Bob de Kruyff
78 Eleganza
Chandler, AZ
Re: Power Steering Pumps! [message #279182 is a reply to message #279176] Fri, 05 June 2015 23:45 Go to previous messageGo to next message
John Heslinga   Canada
Messages: 632
Registered: February 2011
Location: Edmonton, Alberta, Canada
Karma: 4
Senior Member
Jon

You are right the basic pump has many applications. The pressure and flow may or may not be different. But if you do transfer the old pressure and flow controls that same pump should perform the same as your original..

IF!! The original problmm was not the flow / pressure control parts


John and Cathie Heslinga 1974 Canyonlands 260 455, Manny tranny and 1 ton, 3:70 LS, Red Seal Journeyman, DTE, BEd. MEd. Edmonton, Alberta
Re: [GMCnet] Power Steering Pumps! [message #279206 is a reply to message #279176] Sat, 06 June 2015 10:36 Go to previous message
powerjon is currently offline  powerjon   United States
Messages: 2446
Registered: January 2004
Karma: 5
Senior Member
Jon,
I posted this a few days ago on pumps that are available that will work.

"The PS pump itself fits a number of GM vehicles, but the oil tank are different depending on engine size, style and optional AC. You can purchase the pumps sans tank and change the tank off the old pump or take your in to match what you have on the GMC. These listed below appear to have the correct tank, but you need to check.

The GMCMIPI list the following pumps and you have to be careful as some of the pumps supplied by some parts suppliers come with metric high press threads and some come with SAE threads. This is important!

These are SAE fittings for the pressure side for direct use, and these can be crossed to others.

Fenco# SP16044
Napa NSP 817427F”

You do not need to make any alterations to the pumps, install them as they come out of the box. You just have to remove and reinstall the pulley.

JR Wright
78 Buskirk Stretch
75 Avion
Michigan

> On Jun 5, 2015, at 11:29 PM, Jon Payne wrote:
>
> Guys,
>
> Having the worst luck with Power steering pumps (I'll make a separate post about that later)
>
> Regarding the recent posts on this subject, I have seen a lot of good info but no solid conclusions. I read the manual on how the pump works and have
> a good idea how the pressure/flow is controlled. That got me thinking of all the different applications, the pump itself is most likely the same from
> one application to the next. Primary differences between applications are the flow control valve, spring and fitting and of course the reservoir. So
> depending on the application these parts will vary, but the actual pump is the same. Agree?
>
> So if my assumption is correct, and if I get a pump for a 76 Toronado, for example, and changed over the flow control valve, spring, fitting from the
> original pump, and if need be the reservoir, it should work just fine. Correct?
>
> Jon
>
>
> --
> Jon Payne
> 76 Palm Beach
> Westfield,IN
> _______________________________________________
> GMCnet mailing list
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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