LLY: Power steering pump pulley backed it self off of shaft

[Parker_]

Any ever have this happen ? Backed off threw the belt . Managed to use a puller and get in back on correct but no explanation why it happend


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[IOWA LLY]

Yeah I have actually. Had a customer show up with the exact same problem about a month ago. Found no reason why. Used the tool to push it back on the shaft and it's been fine ever since. I have no idea why it happened.

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[Ne-max]

As pumps get loose the start a slight vibration. It causes pulley to work itself out. Learned this the hard way. Mine did the same thing. After the 3rd belt I replaced it. Some guys tack weld them.

 

[c20elephant]

I had one do it on 1982 truck some 20 years ago, a friend of mine took a punch and dimpled the inside of the pulley about 4 times both sides around and never came off again.

 

[Parker_]

As pumps get loose the start a slight vibration. It causes pulley to work itself out. Learned this the hard way. Mine did the same thing. After the 3rd belt I replaced it. Some guys tack weld them.

So basically shaft on the pumps getting tired , might just need to replace pump . St 92 dollars a pump it's worth it . Costed me 2 hrs of my time today


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[c20elephant]

So basically shaft on the pumps getting tired , might just need to replace pump . St 92 dollars a pump it's worth it . Costed me 2 hrs of my time today


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The shaft on the pump is hardened steel, the pulley I would suspect to be the problem before the shaft.