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Technical Remove pulley from water pump

Discussion in 'The Hokey Ass Message Board' started by TudorTony, Jan 22, 2022.

  1. TudorTony
    Joined: Jun 2, 2013
    Posts: 227

    TudorTony
    Member
    from NJ

    I got a mid ‘60’s Olds 400 engine & replacing the water pump & don’t see bolts holing pulley on it so guessing I need a puller? Tried tapping w rubber mallet no go. Thought the long bolts holding fan on were connecting but alum spacer for fan & pulley still stuck tight to pulley & pump?
     
  2. jimmy six
    Joined: Mar 21, 2006
    Posts: 11,007

    jimmy six
    ALLIANCE MEMBER

    I’ve had to remove the backs of other GM water pump and push the pulley, seal, and shaft thru the pump rotor out the front, Then remove the pulley from the shaft by pushing the shaft thru the pulley. I am not familiar with the Olds.
    I have never been able to use a puller with one ever, even after making a split plate the bolted into the pulley. Good Luck.
     
  3. Rickybop
    Joined: May 23, 2008
    Posts: 7,881

    Rickybop
    Member
    from Michigan

    I think you've already removed the attaching bolts, and the parts are just stuck together.
    I can only suggest...
    penetrating oil
    vibration/shock
    maybe a little heat
    Don't hammer the pulley too badly.
    Unless there's something different with the Olds.
     
    squirrel likes this.
  4. squirrel
    Joined: Sep 23, 2004
    Posts: 50,951

    squirrel
    Member

    If it had bolts holding the fan on, they also held on the pulley and spacer. But the pilot on the pump shaft, might be corroded and stuck in the spacer, and the pilot nub on the spacer might be corroded and stuck in the hole in the pulley.

    I'd try soaking with penetrating oil, then support the pulley and use a hammer and drift to knock the spacer out (from the center).
     
    osage orange, clem and Rickybop like this.

  5. Ebbsspeed
    Joined: Nov 11, 2005
    Posts: 5,781

    Ebbsspeed
    ALLIANCE MEMBER

    Put some heat on the aluminum spacer, it's likely seized to the stub of the water pump shaft. Both the spacer and the pulley are held on by the long bolts, and thread into a hub pressed onto the pump shaft.
     
  6. Rickybop
    Joined: May 23, 2008
    Posts: 7,881

    Rickybop
    Member
    from Michigan

    Aluminum and steel want to glue themselves to each other.

    You might try convincing a sharp knife to go between the mating surfaces. Take care not to damage the aluminum spacer.
     
  7. oldiron 440
    Joined: Dec 12, 2018
    Posts: 2,828

    oldiron 440
    Member

    Your not trying hard enough...
    20220122_190259.jpg
     
    mgtstumpy and Desoto291Hemi like this.
  8. 2OLD2FAST
    Joined: Feb 3, 2010
    Posts: 4,001

    2OLD2FAST
    Member
    from illinois

    TWIST ,dont BEAT , generally less damaging .
     
    loudbang likes this.
  9. TudorTony
    Joined: Jun 2, 2013
    Posts: 227

    TudorTony
    Member
    from NJ

    Hi all & thx, wacked a few times w a rubber mallet & came right off.
    Question, I normally goop up the gasket surfaces w my choice of goop but the pump came off so clean including the gasket in tact w/o any kind of residual goop to remove so I’m thinking of going dry w a new gasket & just cleaning the already very clean mating surfaces as I didn’t have any leaks except around the bushing / bearing! Thoughts?
     
    osage orange likes this.
  10. squirrel
    Joined: Sep 23, 2004
    Posts: 50,951

    squirrel
    Member

    I use a sealer on water pump gaskets, but you can try it without, and see what happens.
     
    osage orange and Desoto291Hemi like this.
  11. I'd at leave cover the gasket with a little grease prior to assembly.
     
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  12. TudorTony
    Joined: Jun 2, 2013
    Posts: 227

    TudorTony
    Member
    from NJ

    I think grease sounds good. I’ve used before, sealed up nice & easy take apart w/o the hardened goop mess!
     
    osage orange likes this.

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