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Old 02-05-2007, 12:22 AM   #1
shad0wslay3r
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1987 Chevy Spectrum Harmonic Balancer/Crankshaft Dampener..

Story is, headgasket went out, blah blah blah have it back together, go to crank it over.. timing is off.. whatever, hasnt been running in 7 years i expect that, adjust everything, go to put timing belt back on, snaps. Sort of expected that looks like it has never been changed at 160,000 miles.

And it all comes down to the harmonic balancer, I CANT GET IT OFF!

I've considered left hand thread, ive heated it up, i've gone in reverse and forward for about 5 minutes with the impact trying to break it loose but it just won't budge.. Chilton's way of doing it is: "Remove the dampener to remove the timing belt". Is it just really stuck on there, or am I missing something?

Any tips would be GREATLY appreciated.. its -10 degrees outside and the less time i spend in the garage (which only gets to about 30, due to not being insulated) is more time to be not freezing my nads off.

Thanks in advance,
Garrett
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Old 02-05-2007, 01:51 AM   #2
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Besides impact Gun the only other way i have seen it done is first just crank the engine over and make sure you know which way it spins, usually clockwise, so you find a good impact socket and a long bar and you wedge it on a part of the frame where it cannot come off, everyone stands a good distance away and you crank the engine over just enough to turn the motor over once, you only have to crank for a millisecond, SOMETHING WILL GIVE wheather it breaks your socket, the bolt or the Johnson bar or the starter, it has worked 4 outa 4 times for me soo far but i gurantee nothing and can promise you will get injured if you dont do this right, meanin be nowhere near it except the guy cranking the car over, whos inside the car
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Old 02-05-2007, 02:21 AM   #3
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Use the longest breaker bar you can find, and then add a piece of long hollow pole to it, this way you are able to apply alot more pressure/leverage to the bolt in question. It does depend on just how much spare space you have available though!
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Old 02-05-2007, 03:55 AM   #4
shad0wslay3r
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Well, I'd rather not try shoving stuff in and trying to stop it from turning over, lol.

I'll take the hood off and get my new breaker bar on it.. and put my nice 7 foot lead pipe on the end.. i'll see how that goes, lol
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Old 02-06-2007, 12:45 AM   #5
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Quote:
Originally Posted by shad0wslay3r
Well, I'd rather not try shoving stuff in and trying to stop it from turning over, lol.

I'll take the hood off and get my new breaker bar on it.. and put my nice 7 foot lead pipe on the end.. i'll see how that goes, lol
Yes, if you have enough room, a 7-foot pipe sounds great, lol
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Old 02-06-2007, 01:36 AM   #6
shad0wslay3r
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Well .. I tried the breaker bar and putting it under the frame, no luck. Starter doesnt have enough torque. I thought the battery was low, but charger says its fully charged. I can bust it loose with the breaker bar, I just can't figure out how to keep the actual gear from moving while turning the wrench
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Old 02-06-2007, 07:09 PM   #7
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any other ideas
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Old 02-06-2007, 08:00 PM   #8
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1. Your car does not now nor has it ever had a harmonic balancer. Never. It has a crankshaft pulley. The terminology is not interchangable.

2. The crank pulley bolt is torqued at the factory to 147 N.m which is equivilent to 108.5 lb/ft. Additionally it has thread locker applied. The bolt will loosen easily with a decent impact wrench. Your 7-foot long cheater bar is useless unless you have some way to safely lock the flywheel. Even then, you might twist the crank. Air is the only safe way.
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Old 02-07-2007, 03:37 AM   #9
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I'm using my matco impact... I heated the whole thing up because I am assuming that they use red threadlocker..
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Old 02-07-2007, 03:45 AM   #10
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Quote:
Originally Posted by shad0wslay3r
I'm using my matco impact... I heated the whole thing up because I am assuming that they use red threadlocker..
Good idea. Get it nice and hot so you can melt the crank seal and take the heat treat out of the crank. Awesome. Matco is a short name for "almost as expensive as Snap-On but only a little better than Campbell Hausfeld". If you're not turning it, you don't have the gun, hose or pressure. Maybe all three.
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Old 02-07-2007, 04:15 AM   #11
shad0wslay3r
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Well maybe it is just my ignorance but how else do you loosen red thread locker with a 3/4 drive impact wrench and a 5 hp air compressor.... constant 110 psi
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Old 02-07-2007, 05:07 AM   #12
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I can tell you that whenever I am confronted with a screw that has thread sealer, I give it's head a sharp rap with a hammer ... the hammer varying from a few oz ballpeen for turbocharger screws to 5lb gympie/lump/bolster for crank pulley/damper/balancer screws. Just don't get carried away, because there are thrust bearings in that there crankcase.

Heating sealer can cause it to harden even more.

Rattlegun with adequate torque and air pressure is the way to go.
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Old 02-07-2007, 06:47 PM   #13
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I'll give it a few more smacks with the hammer, think an impact hammer would be a little too much?
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