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handy tip for replacing harmonic balancer. 

 

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 Post subject: handy tip for replacing harmonic balancer.
Posted: Fri Jul 20, 2007 11:42 pm 
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not sure how many people know this already, but i thought i would post it for anyone who doesn't know. i noticed the other day that my HB was coming adrift, ripping my serpentine belt in the process. so i thought i would replace it. i tried getting it off with a rattle gun and socket, but my compressor isn't big enough (i assume). So i took it to the local mechanic to do. i dropped in while he was doing it and saw how he had locked up the crank. he used an old serpentine belt and wrapped it around the front of (i think) the k frame and then around the harmonic balancer. then he just turned the bolt on the crank till it locked up. Kind of like the strap type oil filter tool works. Seemed simple and very effective. So there it is easy peasy.
also this meant he didn't have to remove my radiator to get the rattle gun in, saving me 12 litres of coolant too.

 

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Posted: Fri Jul 20, 2007 11:59 pm 
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sounds a bit fidely. i determine which way the motor turns, for eg. i removed my h/b yesterday and my motor turns in a clockwise direction (thats if i stand infront of the car facing the motor). i got a 1/2" breaker bar + the appropriate SINGLE HEX socket and put it on the right hand side of the balancer, removed the eng fuse (to prevent the motor from starting) and cranked it for 1-2 seconds. this cracks the bolt and allows it to be removed with a ratchet. If you are going to do it this way be absolutly certain that breaker bar is on the correct side of the balancer or you risk shearing the head of the bolt :? but done right it works every time.

 

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Last edited by nannas_ed on Sat Jul 21, 2007 12:10 am, edited 1 time in total.

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Posted: Sat Jul 21, 2007 12:06 am 
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both good ideas but i cant really visualise the first one....second is a great idea

 

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Posted: Sat Jul 21, 2007 12:58 am 
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it took me a minute to figure out how and why the belt was on. but it did seem very efficient.

 

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Posted: Sat Jul 21, 2007 1:00 am 
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pugsley wrote:
it took me a minute to figure out how and why the belt was on. but it did seem very efficient.


im not saying its the wrong way to do it, just to me it seems a little fidely is all. but hey if you feel comfortable doing it that way then go for it.

 

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 Post subject: That will stuff your balancer rubber
Posted: Sun Jul 22, 2007 8:11 pm 
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That is a good way to stuff your harmonic balancer!

You have a belt around the outside of the balncer locking it. You then have a spanner on the bolt on the middle of the crank. The force is all being transmitted from the outer ring to the inner ring of the harmonic balancer via the damping rubber.

I'd be checking to see if my TDC mark on the pulley aligns properly after knowing someone did that.
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Posted: Sun Jul 22, 2007 10:22 pm 
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i got mine off by useing the air con belt and squeezing the middle with some vice grips..

 

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Posted: Sun Jul 22, 2007 10:32 pm 
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After you get it off. Has anyone had any problems getting the damn thing back on..
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Posted: Sun Jul 22, 2007 10:36 pm 
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oh s**t yeah,,i had to send the ea to a mechanic,,he spent 15 mins linishing it before it would go back on,,no one knew why it wouldn't..

 

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Posted: Sun Jul 22, 2007 11:49 pm 
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here a tip: careful of the the threads in the crank, i had a puller damage the thread and took me 2 hours to get the thread restarted, the lawn was toolbox by the time i was finished, i used to throw em over the back fence but it was getting costly.
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Posted: Mon Jul 23, 2007 1:45 am 
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^

ive heard you undo the bolt on the front partly and then use the puller against the bolt so you dont damage the thread.

i might be doing mine this week as my crank pulley seal is leaking.

 

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Posted: Mon Jul 23, 2007 2:20 am 
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Breaker bar and the starter motor trick works 99% of the time, unless you get one that's extremely tight.
To fit i usually use a block of timber against it and smack it on, that way you don't damage it, you can also try using the bolt to get it back on.
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Posted: Mon Jul 23, 2007 9:24 am 
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To take it off, remove the centre bolt all the way. There will be a big washer on it, take that off and screw the bolt all the way back in and then use the puller. The balancer will pull off over the bolt when there is no washer on it.
Its important to screw the bolt all the way in otherwise you will damage the thread.
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Posted: Mon Jul 23, 2007 10:50 am 
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i have used the belt trick heaps. haven't rooted a balancer yet. maindrama at times is to get something solid to hold the end of the belt against.

 

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