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Removal Of Harmonic Balancer

rukus

By rukus,
in General Maintenance

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rukus Grand Master

rukus

Posted
Posted

The engine is out of the car and on an engine stand.

We've tried using an alternator belt to stop it from turning, and tried holding it with a bolt on the back of the engine to stop it from turning when we try and loosen it, but no go.

Engine is at home, and i dont have access to a strong rattle gun. What can I do?

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https://www.sau.com.au/forums/topic/125093-removal-of-harmonic-balancer/
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wrxhoon Grand Master

wrxhoon

Posted
Posted

If you still have the ring gear on its easy , all you need is a ring gear stopper tool . If you dont have one i can lend you mine ( its home made but it works . I have a rattle gun too but it may not undo it .

pnblight Mentor

pnblight

Posted
Posted
Or if the flywheel is off put 2 of the bolts back in and a pry bar between them to hold the engine from turning.

yes good method but make sure you

1/screw the bolts all the way in (to prevent thread damage)

2/keep the level as close to the back of the crank as possible (to minimise level on the bolts, to you dont damage them)

pete

Swiper the Fox Grand Master

Swiper the Fox

Posted
Posted
got it off

big breaker bar, and 2 blocks of wood shoved in next to the crank to stop it from turning..

;3

Good luck with the cam belt pulley....lots of heat and a cold chisel got ours off....split it in two...one of the most frustrating jobs ive encountered....new one required to replace it.

jetpilot Enthusiast

jetpilot

Posted
Posted

2 people required with large screw drivers plying the top.

1 person on the bottom underneath plying the the bottom part.

Like triangle formation and it will come off easily.

Since you have 3 African Americans and forces at once on the same object rather than effing around with screws and and shit like that.

*= screw driver * O *

O= harmonic balancer *

MerlinTheHapyPig Mentor

MerlinTheHapyPig

Posted
Posted

when i did my timing belt, the harmonic balancer bolt was pretty easy, but pulling it off was an absolute bitch, used a puller and a heap of crc and it came off in the end. I was worried about busting the rubber in the harmonic balancer because the puller was pulling so hard...

MerlinTheHapyPig Mentor

MerlinTheHapyPig

Posted
Posted
What sort of puller did you use?

Never use a puller that is a claw type that grips on to the edge of the balancer.

yeah, it was the claw type. i had a spare balancer from another motor, so didn't really care if i broke it. I had to pull out the radiator and aircon to get enough room, though i'd been meaning to pull out my aircon anyway, so killed 2 birds with one stone so to speak. I think i may invest in one of the pully pullers that you screw into the 2 holes on the balancer next time.

Cubes Grand Master

Cubes

Posted
Posted

Reason I say is early days I damaged a balancer using one. :unsure:

Now I only use what I think is called a steering wheel puller.

Essentially looks like the letter Y with a big bolt in the middle.

You will notice on balancers they have 2 m6 I think it was bolt holes near the center bolt, these are used to fix the puller to the balancer, you then screw the bolt that pushes against the crank essentially pushing off the balancer. If that makes sense. :yes:

sh@un Grand Master

sh@un

Posted
Posted

This is indeed one of the harder maintenance jobs by a fair way. My mechanic friend ended up taking 2 extra hours to do this job on my car when we changed the timing belt. Said he used an oxy set-up to heat the harmonic balancer lightly to make it come off the crank more easily

Craved Grand Master

Craved

Posted
Posted

wow. i have used the claw type on a few engines (rb25 - BMW 2.3L- CA18det and lancer 1.5L ) and never had anyof them "stuck" like this... maybe i just got lucky :yes:

oh, i never use the front most rim on them though, always as far back as possible on the balancer

MerlinTheHapyPig Mentor

MerlinTheHapyPig

Posted
Posted (edited)
wow. i have used the claw type on a few engines (rb25 - BMW 2.3L- CA18det and lancer 1.5L ) and never had anyof them "stuck" like this... maybe i just got lucky ;)

oh, i never use the front most rim on them though, always as far back as possible on the balancer

just be careful using the claw puller, because the skyline balancer (well rb20 don't know about other motors), has rubber between the 2nd and 3rd pulleys, so if you use a claw puller behind the largest pully, it will put stress on this rubber section and can break it.

I managed to get mine off this way without damaging it, and it was stuck on pretty hard, but i had a spare one handy so it didn't really matter if i broke it.

Correct way to do it, is to use 2 high tensile bolts in the bolt holes and the right sort of puller.

Edited by MerlinTheHapyPig

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