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Old 02-04-2005, 08:48 PM   #1 (permalink)
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hydroboost pump change

I have an 82 burb with hyrdoboost and my pump had been squeeling for a while now so I replaced it with a junkyard pump.. Well that one worked fine and first and now its squeeling when I turn. Is there possibly another prob or is this pump toast too? and do I need to bleed lines and do something special since I have changed pumps?
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Old 02-05-2005, 07:12 AM   #2 (permalink)
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what did you use for fluid?
if it was trans fluid then you will need to remove it and use GM power steering fluid. it has better non foaming agent and will prevent squeeling & howling.
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Old 02-05-2005, 08:07 AM   #3 (permalink)
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I used a cheap no name power steering fluid. I'll drain it out and try the GM stuff. Thanks!
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Old 02-05-2005, 08:28 AM   #4 (permalink)
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one more thing, don't forget to dump the Hydroboosters acumulator. with the engine OFF, pump the brake pedel about 10 times, that way you will get any hidden oil out.
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Old 02-07-2005, 09:35 AM   #5 (permalink)
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Are you sure it's not simply the belt squealing? On my hydroboot setup I have to go retighten the belt a couple of times a year.
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Old 02-07-2005, 01:17 PM   #6 (permalink)
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Worn/loose belt is a common cause, but another little known problem is worn out pulleys. No they don't last forever!
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Old 02-07-2005, 05:26 PM   #7 (permalink)
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I'm pretty sure its not the belt as when its squeeling the wheel is very hard to turn.. I was able to get the belt nice and tight when I changed pumps but it still seems to squeel when I turn in parking lots and tight places like that.
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Old 02-07-2005, 10:39 PM   #8 (permalink)
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Try spraying a little belt dressing on it - you'll find out if the belt is the culprit...also when the belt sqeals it is hard to turn.....
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