New PS Pump, Badly Vibrating Belt. Bent Pulley? - Vintage Mustang Forums

 
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post #1 of 6 (permalink) Old 06-03-2017, 10:47 PM Thread Starter
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New PS Pump, Badly Vibrating Belt. Bent Pulley?

I just spent the day replacing my power steering pump and all hoses. Removed the pulley from the old pump with a PS pulley puller. Pressed it on the new one, plumbed it all up. No leaks, which I was happy about, but as soon as I took it down from the jack stands, and fired it up, the PS belt vibrates a lot, making that nasty sound as it looks like it's going to spin right off the pulleys. I tried tightening the belt, loosening the belt, tried a new belt. Nothing helps. It still vibrates like crazy. It's not drivable. The pulley doesn't appear off balance in any way, but could I have bent it when I was either removing it or pushing it back on the shaft of the new pump? Any ideas?


1968 Convertible - Deluxe Interior
Acapulco Blue, 289 4 Barrel, Auto
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post #2 of 6 (permalink) Old 06-05-2017, 10:35 PM Thread Starter
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I pulled the pulley to inspect it. Other than a small dent in the outer edge of the groove, which I straightened as best I could, it seems fine. It's definitely the original pulley with the FoMoCo stamping. So, I pressed it back on, lined it up with the main crank pulley, tightened up the pump and it still vibrates. I'll upload a video to YouTube if that will help diagnose the issue. Could it be something in the plumbing of the pump and control valve? I'm 99% I got it plumbed correctly from the pump to the control valve and the control valve to the cylinder.


1968 Convertible - Deluxe Interior
Acapulco Blue, 289 4 Barrel, Auto
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post #3 of 6 (permalink) Old 06-05-2017, 11:18 PM Thread Starter
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Here's a link to a video I uploaded tonight of the current level of vibrating.

https://youtu.be/OPYvTG9K8B4

What do you guys think?


1968 Convertible - Deluxe Interior
Acapulco Blue, 289 4 Barrel, Auto
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post #4 of 6 (permalink) Old 06-06-2017, 10:44 AM
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The only way to be sure IMO would be too to find a undamaged pulley and R/R old one. Have you tried calling Chocko Stang (Dan) 217-882-2083 or do a search for him on the forum. A lot people here use him including myself.
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post #5 of 6 (permalink) Old 06-06-2017, 11:13 AM Thread Starter
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Quote:
Originally Posted by Fastang68 View Post
The only way to be sure IMO would be too to find a undamaged pulley and R/R old one. Have you tried calling Chocko Stang (Dan) 217-882-2083 or do a search for him on the forum. A lot people here use him including myself.
Is the pulley really that precise? I don't want to waste $60-$80 on a new pulley if that's not really the issue. Is that the most likely culprit for the vibrating, though?
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post #6 of 6 (permalink) Old 06-06-2017, 11:37 AM
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Quote:
Originally Posted by graz34 View Post
Is the pulley really that precise? I don't want to waste $60-$80 on a new pulley if that's not really the issue. Is that the most likely culprit for the vibrating, though?
No I cant say a 100 percent. Try calling Dan at Chocko Stang if you don't get any advice here. But if everything else is new I would suspect that pulley.
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