C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Timing chain crank sprocket install

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Old Jul 13, 2017 | 10:37 AM
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Default Timing chain crank sprocket install

I'm assuming it's recommended to replace the crank sprocket when installing a new timing chain...A three jaw puller looks like it should work to remove the crank sprocket, but how about installing?

The FSM shows what looks like a piece of pipe and a hammer to install, but can this be done in the car?
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Old Jul 13, 2017 | 05:01 PM
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I just did mine. It can be done in the car but it is a little tricky. Take your time and tap gently. It will slowly go on. There are presses out there to put them on with but there was no room for the one I had. Getting the harmonic balancer back on is much harder then the crank sprocket
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Old Jul 13, 2017 | 05:35 PM
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Default timeing chain

Not a bad job in all, but be sure to have a harmonic balancer installer
on hand. you can rent one from the parts store.
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Old Jul 13, 2017 | 10:07 PM
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Originally Posted by slow-vette
I just did mine. It can be done in the car but it is a little tricky. Take your time and tap gently. It will slowly go on. There are presses out there to put them on with but there was no room for the one I had. Getting the harmonic balancer back on is much harder then the crank sprocket

Originally Posted by vettespecial
Not a bad job in all, but be sure to have a harmonic balancer installer
on hand. you can rent one from the parts store.
Thanks. What did you guys use to pound the sprocket on??

Harmonic balancer or crank hub? The HB is simply bolted to the crank hub, not a big deal if I'm understanding correctly
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Old Jul 13, 2017 | 10:19 PM
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I did this 2 weeks ago, I pulled with a 3 jaw puller ,no prob, then I lubed the crank, heates my pully to 350 degrees.Using a leather glove I slipped it on and tapped with a cresent wrench(rounded side) side to side and it went all the way easily.
Good luck


Last edited by xrav22; Jul 13, 2017 at 10:21 PM.
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Old Jul 14, 2017 | 09:58 AM
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Make sure you line up the arrows.
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