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Northstar Engines and System Technical Discussion Discussion, Water Pump Drive Pulley Removal in Cadillac Engine Discussion; I am currently trying to remove the pulley on the camshaft. I rented a 3 prong pulley remover. The pulley ...
  1. #16
    JohnnyGauge is offline Cadillac Owners Member
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    Re: Water Pump Drive Pulley Removal

    I am currently trying to remove the pulley on the camshaft. I rented a 3 prong pulley remover. The pulley itself is chewed up from the water pump pulley seizing up. The prongs are slipping off the pulley. Is it safe to dremel the plastic off the inner metal portion and use the pulley remover to pull the metal portion off?


  2. #17
    Ranger's Avatar
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    Re: Water Pump Drive Pulley Removal

    OMG! DO NOT use a 3 jaw puller. Didn't you read the first 15 posts?

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    Submariner409 is offline If it won't run, chrome it
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    Re: Water Pump Drive Pulley Removal

    Quote Originally Posted by JohnnyGauge View Post
    I am currently trying to remove the pulley on the camshaft. I rented a 3 prong pulley remover. The pulley itself is chewed up from the water pump pulley seizing up. The prongs are slipping off the pulley. Is it safe to dremel the plastic off the inner metal portion and use the pulley remover to pull the metal portion off?
    This ^^^^ is an identical post to a new thread that he started - the two threads are now close together, both refer to water pump drive pulleys, and no, he didn't read the rest of the thread.

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  5. #19
    houster2002 is offline Cadillac Owners Member
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    Re: Water Pump Drive Pulley Removal

    What is so wrong with a key way and a bolt or a slotted shaft for this pulley to attached to the cam shaft someone give me 5 Min's alone with the Northstar engineers they need 32 punches in the face each!!!!!!!
    Remember when you could remove 6 or 8 bolts and change a valve cover gasket. Not to mention pulling the motor and separateing the transaxle just to drop the oil pan these guys got it comming to them. This engine is over enginered and is sicking that its an American!!!!!

    Ps The thing thats burning me up is the guy washed his car often and pressured washed his motor. This caused water to get into the top of the head and rust the little bit of steel in under the valve cover causing the pickup tube screen to clog and caused the pressure relife valve to be stuck open hence loss of oil pressure. Normally undoing the motor mounts and droping the pan would fix this or a easier valve cover removal may have prevented it. But NO!!! Drop the motor remove transaxel and a pile of parts and gaskets to boot and BTW no bolt holes in a Harminoic Ballancer WTF!!!! SO GM / Caddy nice job sell a pretty car that people want to wash and have it cause a $3,500 to $4,000 dollar repair now thats thinking PROFIT!!!! Why did we bail these guys out again please remind me!!!!!

  6. #20
    RippyPartsDept's Avatar
    RippyPartsDept is offline Cadillac Owners 10000+ Posts
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    Re: Water Pump Drive Pulley Removal

    nice rant

    1 - don't pressure wash your engine bay... i wouldn't even recommend spraying a garden hose in the engine bay ... just too risky

    2 - the northstar was introduced to the world 20 years ago in 1992 for the 1993 allante - it was a lotus 32 valve DOHC design that GM had been working with (first with the Corvette LT5 engine) ... it was and probably still is one of the most technically complex V8s GM has ever made.

    3 - luxury cars will require luxury repairs ... just because it's not worth $50,000 anymore doesn't mean the repairs will get cheaper too

    4 - would you really rather GM had stuck with the HT engines???

  7. #21
    Submariner409's Avatar
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    Re: Water Pump Drive Pulley Removal

    My, oh my !

    The water pump drive pulley pulls off and presses onto the cam snout quickly and easily using either the GM shop tools or a slightly modified P/S pump pulley puller and a metric bolt/nut/stack of greased washers.

    Too bad the OP never worked on '50s and '60s Jaguars, MGs, Austin Healeys - and don't mention Ferrari or Lamborghini.........or anything with a Lucas electrical "system".

    BTW - Welcome Aboard !!!

  8. #22
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    Re: Water Pump Drive Pulley Removal

    Yeah ive heard horror storys of that famous "Lucas Electrical System.

    Getting ready to do this Water Pump job today.
    Wish me luck... I'll probably need it

  9. #23
    jeffrsmith is offline Cadillac Owners Fanatic
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    Re: Water Pump Drive Pulley Removal

    Yes, Lucas Electrical. Just the mention brings back fond memories of my Triumph TR6.

    For the Water Pump job, just make absolute certain that the cartridge removal tool properly engages the tabs on the pump. This can be a horrendous job if you cannot get the removal tool properly engaged.

  10. #24
    Derek79 is offline Cadillac Owners Member
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    Re: Water Pump Drive Pulley Removal

    What metal tube is connected to the throttle body that is in the way of removing the drive pulley and is it safe to remove it.

    ----------

    You can also go to autozone and rent one for 43 bucks but that tube in front of the pulley that's connected to the throttle body is worrying me. Is it safe to remove?

  11. #25
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    Should start your own post but...
    The pipe is Egr tube. Use caution as not to bend or break it but yes can remove.
    skibumstevo likes this.

  12. #26
    skibumstevo is offline Cadillac Owners Member
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    Re: Water Pump Drive Pulley Removal

    Sorry to awaken a somewhat old thread, but I was wondering how the pulley can be evaluated for replacement? I intend to do the water pump in the next couple weeks...decided to throw a new tensioner on for good measure while I'm at it...but would prefer to not go as deep as the pulley unless it really needs to be changed. :/ Any advice would be appreciated!

  13. #27
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    Re: Water Pump Drive Pulley Removal

    If the large water pump drive pulley looks good with no obvious nicks or breaks - don't fix it.

    The tensioner pulley - not the entire tensioner arm assembly - can be easily replaced witha $24 pulley/bearing from either RockAuto (your make, year, model, belt drive, the 3-rib small pulley) or a NAPA store.
    Attached Images
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  14. #28
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    Re: Water Pump Drive Pulley Removal

    About the ONLY time the drive pulley gets replaced is if the tensioner pulley seizes and the belt melts the drive pulley.
    skibumstevo likes this.

  15. #29
    skibumstevo is offline Cadillac Owners Member
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    Re: Water Pump Drive Pulley Removal

    Thanks for the info...the drive pulley looks alright, but I'll inspect closely for cracks once I get all the surrounding stuff off there. And I 100% agree, normally the tensioner wouldn't need replacement, just the idler pulley...but the tensioner on there is aftermarket (from some previous repair I didn't do) and has a chunk of the metal broken off. No idea how that could have happened, but it's clearly not in good shape. Found a factory original ACDelco assembly on Amazon for $85, so just decided it would be better to return the water-works to "stock".

  16. #30
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    Re: Water Pump Drive Pulley Removal

    The original water pump belt drive tensioner entire assembly by Gates (an OEM supplier) is $40 and the AC Delco (made by several different suppliers) is $51 in RockAuto.

    The AC Delco listed for $90 is a ripoff. You may find that the several different assemblies are all made in Canada - as was my original on the STS - notice the origin of the assembly that is currently on my garage shelf.

    http://www.rockauto.com/en/catalog/c...ensioner,11659
    Attached Images

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