"Save my bacon" on p/s pump rebuild?

Discussion in 'Suspension, Steering and Chassis' started by Bill Crowell, Sep 12, 2017.

  1. Bill Crowell

    Bill Crowell Well-Known Member

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    I am trying to learn how to rebuild the Saginaw model .94 power steering pump. On the one I reassembled today, I have about 1/8" of end play on the pump shaft. It doesn't seem like it had this much end play before, but I could be wrong. Is this too much end play? If so, can you kindly suggest what I might have done wrong in reassembling it?

    No parts were left over.

    Thanks very much.
     
  2. pishta

    pishta It's a gift....

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    can you correct it with the press on pulley?
     
  3. Bill Crowell

    Bill Crowell Well-Known Member

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    The pulley is now pressed on so that the end of the pump shaft is flush with the pulley. Should I try to press the pulley on further, so that the end of the pump shaft will be somewhat proud of the pulley?
     
  4. Faster74

    Faster74 Banned

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    i have a 74 duster, with saginaw pump and the end of the shaft does stick thru the pulley about 1/8 inch, and if you look behind the pulley it should be flush against a stop on the shaft,
     
  5. RedFish

    RedFish Well-Known Member

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    I aint awake and coffeed up yet but I know there's a plate and a spring pushing everything forward. The veins aren't pinched but there shouldn't be a lot of space for fluid to pass their square ends either. I would say .02 shaft travel is normal but I don't know exactly what is acceptable. An eighth inch sure doesn't sound right. If there was that much travel, the groove worn by the shaft seal would be wide too. Maybe a long pin got in a shallow hole, or isn't in a hole? Honestly... A whole pot of coffee wouldn't help me help you ( Not enough recent experience ). I would need to go take a pump a apart and try to recreate a similar condition.
     
  6. pishta

    pishta It's a gift....

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    Faster74 that may be the answer. press it on more.....Put a .02 feeler gauge back there and them press it on for Redfish's spec.
     
  7. Bill Crowell

    Bill Crowell Well-Known Member

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    Pishta, Faster74 and Redfish, thank you very much for your help.

    I was able to press the pulley on farther by using a big washer that would go over the end of the pump shaft. I wasn't aware that you had to do that. Now I know. "Live and don't learn", that's my motto!

    I pressed it on until it spins freely but there is no discernible end play. I hope that will be OK, but do you think I should pull it off a tiny bit to try to get that .02" that Redfish is calling for? I'm thinking it will probably loosen up a bit in use anyway.

    It will be a minor miracle if the pump works and doesn't leak after I've had my greasy mitts on it, but I'll be dipped if I can't learn to do a better job than the rebuild outfits do these days!

    Would you guys like a follow-up report after the moment of truth?
     
  8. RedFish

    RedFish Well-Known Member

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    The ".02" wasn't meant to be a setup specification for any and every pump. Good luck with it.