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05-21-2017, 08:28 PM | #1 |
Registered User
Join Date: May 2014
Location: Louisiana
Posts: 28
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78 Silverado-- PS squeal
The truck has not had much use over the last several years, but I decided to put it back on the road.The power steering has had a terrible squeal for too long, and has a small leak at the shaft on the steering gear. It squealed for about 10 to 20 seconds from a cold start. It squealed sometimes when steering and badly again at hard left and hard right.
I replaced the PS pump and took a lot of time to bleed the system. That did not eliminate the cold start issue so I removed the alternator belt and found I had a bad bearing in the alternator, so I replaced that. Sometimes I still get a short squeal from a cold start. Is that small leak allowing air to enter the system and causing the squeal? Do I need to replace the PS gear or maybe just the seal? |
05-22-2017, 06:58 AM | #2 |
Registered User
Join Date: Aug 2012
Location: Oklahoma City, OK
Posts: 2,611
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Re: 78 Silverado-- PS squeal
My first though was belt squeal from old or worn belts.
If you can get a helper to start the truck while you listen, you might get lucky and find the culprit. |
05-22-2017, 08:08 AM | #3 |
Watch out for your cornhole !
Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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Re: 78 Silverado-- PS squeal
Check belt alignment and put a properly tensioned new belt on it. It sounds like the old PS belt is glazed.
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I'm on the Instagram- @Gearhead_Kevin |
05-22-2017, 09:41 AM | #4 |
Registered User
Join Date: Jul 2016
Location: Brandon,MS
Posts: 489
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Re: 78 Silverado-- PS squeal
Agree. Belt may be the problem.
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05-23-2017, 10:10 PM | #5 |
Registered User
Join Date: May 2014
Location: Louisiana
Posts: 28
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Re: 78 Silverado-- PS squeal
Thanks to all that replied.
I replaced the PS and the ALT belt. No squeal at all now for the full range of steering. |
05-24-2017, 09:12 AM | #6 |
Registered User
Join Date: Jul 2016
Location: Brandon,MS
Posts: 489
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Re: 78 Silverado-- PS squeal
Good deal!
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