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Can anyone explain to me how to put the pulley on the power steering pump. I understand I can't pound it on or press it on. There is no center threaded hole to jack it on. It is for a 68 427. Thanks for any help! Doug
Go to Autozone or Auto Parts store and rent a puller/intaller. Most have a dual thread abore that screws into the pump pulley shaft and comes with a bearing pusher.
Pushing on the shaft with a press or hammer is a no,no.
There are two basic systems for the pump pulley and pump driveshaft to assemble together.
The first system was used up to 1975. It consisted of a male 9/16-18 UNF thread on the pump driveshaft, a nut, and a 1/8 x 1/2 woodruff key. There was a keyway in both the driveshaft and the pulley hub. Unless the driveshaft and pulley are rusted together. The two parts should seperate fairly easily when you remove the nut on the driveshaft.
A new design driveshaft and pulley system was introduced in 1975. The pulley hub is an interference fit to the pump driveshaft. You must use the correct design pulley with the new pump driveshaft. They will not interchange with the old design.
If you look at the end of the 1975+ pump driveshaft you will see some splines and then deeper inside the driveshaft you should see female 3/8-16 UNC threads. Those threads are used by the special tools that are used to press the pulley onto the driveshaft and also to remove the pulley from the driveshaft. Special tools are required so that you don't destroy the power steering pump by pressing (or pulling) the pulley directly on the driveshaft.
So male thread on the pump driveshaft (from dirt until 1974).
Femal thread on the pump driveshaft (from 1975 until today).
That tool shown above is for 1975+ pumps and pulleys. It probably won't be needed by your system unless somebody installed a later (1975+) pump and pulley in your 1968.
Jim
Last edited by Jim Shea; May 16, 2011 at 07:48 AM.
Thanks Jim. I appreciate the response. I am doing a body off restoration and as I move forward with the project I sure that I will have many more questions.
So I have a new pump and a new pulley and they appear to be the pre 1974 model spoken of here. What tool can I use to seat the new pulley on the pump if the tools shown won't work?
Mine has the male thread sticking out, not the female threads.
It should just slide on. Line up the keyway and push it on (do not hammer, maybe light tap with a rubber mallet but that's all).
You can use the nut to draw it in but these were not press fit. If it's super tight, remove the key and polish the shaft area slightly, check it and the bore of the pulley for burrs.
Mooser
Not sure for the 68 but the later BB with P/S had a cast iron pulley, it'll crack if your not carefull. Do not clamp in a vise or hit the rim in any way, shape or form.
Thank you Mooser. Mine is way too tight and won't go on at all so I have some work to do but I certainly appreciate your help.
I'm all over this now.
Best regards,
David