Exactly which GM power steering pump

[Peterb]

Will fit in a 97 disco, I am in need of a new PSP for my disco, and i found that in the mid 80's there are about 4 different pumps used on a chevy s10,
Can someone please let me know exactly which one i will need!
I have a serp belt if you need to know!
Thank you!
cannot drive truck now, It is like steering a rock.
Peter B

 

[post]

Napa part# NSP 20874, I'm about to install this exact one come monday.

edit: here's the thread

http://www.discoweb.org/forums/showthread.php?t=34946&highlight=chevy+power+steering

 

[Peterb]

I bought the 20874, and it does not come with the pully mount, Just a shaft, What do i do now,
Also the return line faces the pass side, not down, Will this present an issue????
Peter.

 

[alex]

you can remove the pulley from the stock mount. The hose issue can be worked around too, but it is much easier to have a new high pressure hose made. Just get a 16mm to 6an and 14mm to 6an power steering adapter and have a hose made at a hydraulics shop for $20 and you'll be all set.

The low pressure side is easy to fix.

 

[Peterb]

How do i remove the stock 3 bolt flange from the stock pump, The new one doesn't have any pully mount, I tried to pul it off with a 3 arm puller, No dice, I even tried heat, The new one has a smooth shaft, so i dont think it's threaded on there, Please, any more imput??!!!
Peter.

 

[alex]

You can pull it off. You need a big puller and lots of heat. Then just press it on the new one with a bolt and a spacer like you would any pulley.

 

[robertf]

stock pressure line works fine, the return line was a problem on my 95 since it is at a different angle than the stock one. The hose was kinked between the timing cover. I used a compression fitting and an elbow to make it work.

96 and up NAS probably won't have any issues since they are distributorless and I think they have a thinner timing chain cover.

 

[alex]

stock pressure line works fine,

It didn't in my case. It could be made to fit, but I had to put a loop in it. Much better fit with a custom hose.

 

[post]

stock pressure line works fine, the return line was a problem on my 95 since it is at a different angle than the stock one. The hose was kinked between the timing cover. I used a compression fitting and an elbow to make it work.

96 and up NAS probably won't have any issues since they are distributorless and I think they have a thinner timing chain cover.

yeah, the return line was the only one I had to get a new one for, the old one was too short. there's a small kink in it but nothing serious.
besides that everyting worked out good.

 

[F-N Nuts]

does anyone know the GM part # for the pump that will fit? it is easyer to get to a gm dealer then napa.

 

[Peterb]

Pump is now on, new hoses and new power steering box, But occasionally acts like no power steering, but 2 minutes later working fine, remover steering damper, still same issues!!! Replaced all these parts due to serious leaks, at stop, it would flow 1 pint in less than 30 seconds, so i replaced lines, But box still leaked, then pump went, Now new pump,,, And YES i did bleed it through the bleeded on top of box!
Now i an confused and frustrated!
What now?????????
Peter.