Power Steering Pump Pulley

[78gmcroyale]

Good Afternoon

I'm in need of a new Power Steering Pump Double Pulley. The OEM pulley is 6 1/2" diameter and all I can find is a Dorman 300-121 which is a 5 3/4"
diameter.

The pulley is pressure fit. I used the proper puller to remove it and now after purchasing 2 different new pumps the old pulley just slips right on
to the shaft with no friction at all. I bought the Dorman and the fit is tight and correct but the pulley is the wrong diameter.

Any help is appreciated.

Thanks

Ray Erspamer

 

[jim kanomata1]

Ray,
We recommend along with other GMC shops the smaller pulley, so don't be
concerned. The PS pump does not have parts that will get stressed much.

> Good Afternoon
>
> I'm in need of a new Power Steering Pump Double Pulley. The OEM pulley
> is 6 1/2" diameter and all I can find is a Dorman 300-121 which is a 5 3/4"
> diameter.
>
> The pulley is pressure fit. I used the proper puller to remove it and now
> after purchasing 2 different new pumps the old pulley just slips right on
> to the shaft with no friction at all. I bought the Dorman and the fit is
> tight and correct but the pulley is the wrong diameter.
>
> Any help is appreciated.
>
> Thanks
>
> Ray Erspamer
>
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>

--
Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.appliedgmc.com
1-800-752-7502

 

[78gmcroyale]

Perfect. Thanks Jim !

 

[Matt Colie]

Ray,

I currently have two power steering pumps on the floor of my barn. One is 6-1/2 and that one is the older nut fastened the newer that needs the
puller that locks into a grove seems to be about 6-3/8 but I was having a hard time and didn't feel like walking across the shop to get a real
measuring device. Both are very rusty. You are welcome to both or either if I can get them loose. Just let me know.

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