LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Need help pulling this crank pulley (pics)

Old Mar 11, 2006 | 11:55 AM
  #1  
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Need help pulling this crank pulley (pics)

My crank pulley doesn't look like the ones I've seen pictures of on the internet. It's not spoked, it's solid. How in the world am I supposed to pull this thing? I can't use the normal harmonic balancer puller because if I thread into it, I'd be pulling on that 3 toed thing behind the pulley and I would be pulling against myself.



Does this look normal?



The only threads to pull with are in this three toed thing behind it.



Here's the puller I have, I don't think this kind is going to work, suggestions?

Thanks for any help, this is frustrating.
Old Mar 11, 2006 | 12:55 PM
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Re: Need help pulling this crank pulley (pics)

it does look like an aftermarket pulley but the hub looks stock. the pulley should seperate from the hub though, maybe its seized on. are you trying to remove the pulley or the pulley and the hub?

if your just trying to remove the pulley you should be able to pry it off after the three bolts are removed.

if your trying to remove the hub you can insert a longer bolt (7/16" i believe) into the crank snout and use that for your hub remover tool to press against. make sure the bolt is bottomed out in the crank so you dont damage the crank threads.
Old Mar 11, 2006 | 04:49 PM
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Re: Need help pulling this crank pulley (pics)

When you say "hub" do you mean the 3 toed thing that the pulley bolts too? I just need to remove the pulley only. I got another pulley puller that goes around and grabs onto the back of the pulley, I'm going to give that a try. I need 6 hands to be able to turn it while I'm holding it up there though
Old Mar 11, 2006 | 04:52 PM
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Re: Need help pulling this crank pulley (pics)

I tapped mine off with a hammer, did you try that?
Old Mar 11, 2006 | 06:35 PM
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Re: Need help pulling this crank pulley (pics)

use a pulley puller on the cirle thing, the the bird foot looking thing on the thing underneath it
Old Mar 11, 2006 | 09:38 PM
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Re: Need help pulling this crank pulley (pics)

Looks like you should pull the crank hub as well and put a new seal in the timing cover judging by the yackity junk in that picture.
Old Mar 11, 2006 | 10:08 PM
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Re: Need help pulling this crank pulley (pics)

Originally Posted by SS RRR
Looks like you should pull the crank hub as well and put a new seal in the timing cover judging by the yackity junk in that picture.
I didnt know it was possible to just replace he timing cover seal, I thought that was part of the main seal that goes around the oil pan, am I wrong?
Old Mar 12, 2006 | 07:40 AM
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Re: Need help pulling this crank pulley (pics)

Originally Posted by Jazsun
I didnt know it was possible to just replace he timing cover seal, I thought that was part of the main seal that goes around the oil pan, am I wrong?
Yeah the front main/crank seal is extremely easy to change. Just need a flathead screwdriver and a rubber mallet to tap the new one in. Very straight forward.
The seal that goes around the bottom of the timing cover and oil pan is the oil pan gasket. That, from what I've read is a large undertaking with the engine still in the car.
Old Mar 12, 2006 | 08:30 AM
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Re: Need help pulling this crank pulley (pics)

Originally Posted by SS RRR
Looks like you should pull the crank hub as well and put a new seal in the timing cover judging by the yackity junk in that picture.
Is that a circular seal that goes right around where the crank shaft come out the front of the engine? Basicially right behind the pulley?

I got the pulley out finally. I had to use a reach-around puller and grab onto the tiny lip just in front of where the belt goes instead of grabbing behind the whole pulley. The claws just barely caught and it was a hairy experience but it finally popped off. I also let it soak in generous amounts of WD40 for about 2 hrs too.
Old Mar 12, 2006 | 10:00 AM
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Re: Need help pulling this crank pulley (pics)

Originally Posted by SS RRR
Yeah the front main/crank seal is extremely easy to change. Just need a flathead screwdriver and a rubber mallet to tap the new one in. Very straight forward.
I used an appropriately sized socket to tap in the seal. Seems like it goes in a little more evenly and less likely to damage it than a screwdriver. It's my version of GM's front cover aligner and oil seal installer J 35468 (which I'm sure we all own).
Old Mar 13, 2006 | 01:42 AM
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Re: Need help pulling this crank pulley (pics)

Originally Posted by Manco
Is that a circular seal that goes right around where the crank shaft come out the front of the engine? Basicially right behind the pulley?
yes
Old Mar 13, 2006 | 01:46 AM
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Re: Need help pulling this crank pulley (pics)

Originally Posted by Jeff95TA
I used an appropriately sized socket to tap in the seal. Seems like it goes in a little more evenly and less likely to damage it than a screwdriver.
screwdriver is used to pry out the old seal. Because the crank seal is not encased in metal and pops in with such ease a rubber mallet can be used to lightly tap the circumference of the seal until it's flush w/ the cover. But whatever works...
Old Mar 13, 2006 | 09:36 AM
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Re: Need help pulling this crank pulley (pics)

Originally Posted by SS RRR
screwdriver is used to pry out the old seal. Because the crank seal is not encased in metal and pops in with such ease a rubber mallet can be used to lightly tap the circumference of the seal until it's flush w/ the cover. But whatever works...
Gotcha. Misunderstood what you meant.
Old Mar 13, 2006 | 03:54 PM
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Re: Need help pulling this crank pulley (pics)

a lot of pullers don't work correctly on lt1's i heard. i retied using 2 differnt ones and had no luck with either of them. i borrowed the gm one from work and it pulled off in no time. they are a pain to get off especially since you can't get an impact up there
Old Mar 15, 2006 | 09:07 AM
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Re: Need help pulling this crank pulley (pics)

get one of those 3 jaw pullers

i have a UD pulley behind my stock and the stock no longer just falls off like it should. Just go up to autozone and rent one for 20 bux and just put the fingers all around the outside of the pulley and pull away. works like cake

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