Replacing Pully on Power Steering Pump
Thread Starter
Race Director
Joined: Jul 2004
Posts: 12,706
Likes: 329
From: Scottsdale Arizona
Replacing Pully on Power Steering Pump
On another post, I wrote about replacing my harmonic damper. While going through this, I found that my power steering pump pully had a severe bend in it.
I think that I finally found the source of my belt whine.
While I have it out, I'm going to replace the seals, but I really need to remove and replace the pully. How do I get it off? It isn't bolted on and the pully appears to be a friction fit. There is also a collar in front of the pully that appears to be hammered on as well.
Any help and tips would be appreciated.
I think that I finally found the source of my belt whine.
While I have it out, I'm going to replace the seals, but I really need to remove and replace the pully. How do I get it off? It isn't bolted on and the pully appears to be a friction fit. There is also a collar in front of the pully that appears to be hammered on as well.
Any help and tips would be appreciated.
Le Mans Master
Joined: Jul 2000
Posts: 6,001
Likes: 113
From: Saginaw Michigan
Your 1981 Vette has an interference fit pulley. You need two special tools. You need a special puller to remove it and you need a special tool to draw the new pulley onto your pump shaft.
To remove the pulley, the special tool will grip the undercut on the pulley hub and react against the driveshaft to pull the pulley off the shaft.
The other special tool will screw into the internal 3/8-16 UNC threads in the end of the pump driveshaft and push the pulley onto the shaft while reacting on the shaft alone. Do NOT even think of trying to press the pulley directly onto the shaft by reacting against the pump housing! You will break parts inside the pump.
Jim Shea
To remove the pulley, the special tool will grip the undercut on the pulley hub and react against the driveshaft to pull the pulley off the shaft.
The other special tool will screw into the internal 3/8-16 UNC threads in the end of the pump driveshaft and push the pulley onto the shaft while reacting on the shaft alone. Do NOT even think of trying to press the pulley directly onto the shaft by reacting against the pump housing! You will break parts inside the pump.
Jim Shea
Race Director
Joined: Mar 2001
Posts: 11,322
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From: Living in the Hartland
Originally Posted by Fevre
Need a power steering pulley puller, if you have an autozone near you they rent/lend them out.
Safety Car
Joined: Jul 2002
Posts: 4,269
Likes: 3
From: St. Charles IL
Cruise-In 5-6-7-8-9-11-12 Veteran
A CI-6 Car Show Winner
My local NAPA store has the tools to do those. Pretty normal for them as every pump they sell needs a pulley swap. If you are friends with your local parts store you might get it done for free
