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#978401 - 07/20/13 12:10 PM How to remove crankshaft pulley?
LXXXIV SS Offline
Member

Registered: 09/07/11
Posts: 971
Loc: Lower Peninsula, Michigan
Trying to get the crankshaft pulley off my stock 84 SS for cleaning and painting. I loosened up the three outer screws that hold the pulley to the damper, but the pulley doesn't want to break loose of the damper. Is there something I'm missing, like maybe the pulley is keyed to the damper or something? Or is it just rust or something sticking it to the damper?

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#978402 - 07/20/13 12:18 PM Re: How to remove crankshaft pulley? [Re: LXXXIV SS]
BadSS Offline
10+ Year
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Registered: 05/30/00
Posts: 1256
Loc: Pearl, MS, 39208
No disrespect intended,,, but did you remove the crankshaft bolt as well? If so,, there's a lip that recesses into the dampener that can rust to it. Spray some WD40 and let it sit for a while then take a small rubber mallet or a block of wood (piece of 2x4) and tap around the edge of the pulley until it breaks loose - that usually works for me.

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#978405 - 07/20/13 12:26 PM Re: How to remove crankshaft pulley? [Re: BadSS]
LXXXIV SS Offline
Member

Registered: 09/07/11
Posts: 971
Loc: Lower Peninsula, Michigan
Originally Posted By: BadSS
No disrespect intended,,, but did you remove the crankshaft bolt as well? If so,, there's a lip that recesses into the dampener that can rust to it. Spray some WD40 and let it sit for a while then take a small rubber mallet or a block of wood (piece of 2x4) and tap around the edge of the pulley until it breaks loose - that usually works for me.


No disrespect taken! smile

All I did was remove the three outer screws. I didn't touch the center bolt that holds the damper to the crank.

Am I suppose to remove the center bolt holding the damper onto the crankshaft too?

All I want is to remove the pulley for painting.

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#978406 - 07/20/13 12:29 PM Re: How to remove crankshaft pulley? [Re: LXXXIV SS]
86ttop Offline
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Registered: 12/23/99
Posts: 10198
Loc: Colonial Beach, Va
IIRC, the pulley is held by the center dampner bolt.
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#978407 - 07/20/13 12:31 PM Re: How to remove crankshaft pulley? [Re: 86ttop]
LXXXIV SS Offline
Member

Registered: 09/07/11
Posts: 971
Loc: Lower Peninsula, Michigan
Originally Posted By: 86ttop
IIRC, the pulley is held by the center dampner bolt.


Crap, that means I'll have to remove the center bolt then, just to get the belt pulley off. I think that's a little out of my league.

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#978408 - 07/20/13 12:55 PM Re: How to remove crankshaft pulley? [Re: LXXXIV SS]
406monte Offline
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Registered: 11/27/06
Posts: 3744
Loc: Hubert, NC
It's not out of your league. Not difficult at all. Just take the bolt out and pull the pulley. Then when you go to re-install just put on some red locktite and torque it to 65 foot pounds, and your done. Nothing to it at all really. The dampner doesn't even get touched. HTH
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#978410 - 07/20/13 01:00 PM Re: How to remove crankshaft pulley? [Re: LXXXIV SS]
LXXXIV SS Offline
Member

Registered: 09/07/11
Posts: 971
Loc: Lower Peninsula, Michigan
Hmmmm, I think I can do that. I have the red loctite and torque wrenches.

Thanks for all the help guys, I really appreciate it.

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#978411 - 07/20/13 01:00 PM Re: How to remove crankshaft pulley? [Re: LXXXIV SS]
BadSS Offline
10+ Year
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Registered: 05/30/00
Posts: 1256
Loc: Pearl, MS, 39208
What he said! That dampener is "press fit" on the crank snout - Just like taking out and putting back in any other bolt,, as long as you have a torque wrench.

edit,,, I type too slow - lol


Edited by BadSS (07/20/13 01:01 PM)

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#978413 - 07/20/13 01:10 PM Re: How to remove crankshaft pulley? [Re: LXXXIV SS]
LXXXIV SS Offline
Member

Registered: 09/07/11
Posts: 971
Loc: Lower Peninsula, Michigan
That's what I love about this forum. I can stop, take a few minutes away from the job and ask questions here, and get all the info I need... or I can be out there in the garage with a 4' pry bar turning my pulley into a pretzel as I try to lever it off.

Thank God for the Internet and this forum.... smile

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#978419 - 07/20/13 02:14 PM Re: How to remove crankshaft pulley? [Re: LXXXIV SS]
upflying Offline
10+ Year
Member

Registered: 03/07/00
Posts: 4193
Loc: Reno, NV
Use a harmonic balancer puller and not a pry bar to remove the press fit dampner.
Be careful, the threads on the crank snout are soft and easy to strip.
9:30 on this video
http://www.youtube.com/watch?v=LZO1fWVxN4c


Edited by upflying (07/20/13 02:20 PM)
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#978424 - 07/20/13 03:48 PM Re: How to remove crankshaft pulley? [Re: LXXXIV SS]
Richie Cat Offline
Member

Registered: 05/03/09
Posts: 1335
Loc: Lake Ronkonkoma, N.Y.
Originally Posted By: LXXXIV SS
Trying to get the crankshaft pulley off my stock 84 SS for cleaning and painting. Or is it just rust or something sticking it to the damper?






Those 3 bolts hold the pulley onto the damper. It is stuck, hit it lightly with a soft hammer. It will come off. The center bolt only is for the harmonic balancer.
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#978428 - 07/20/13 04:18 PM Re: How to remove crankshaft pulley? [Re: Richie Cat]
LXXXIV SS Offline
Member

Registered: 09/07/11
Posts: 971
Loc: Lower Peninsula, Michigan
Originally Posted By: Richie Cat
Those 3 bolts hold the pulley onto the damper. It is stuck, hit it lightly with a soft hammer. It will come off. The center bolt only is for the harmonic balancer.


Hi Richie,

That's what I thought at first, but according to the other guys, I'll need to pull the center bolt too.

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#978433 - 07/20/13 07:29 PM Re: How to remove crankshaft pulley? [Re: upflying]
BadSS Offline
10+ Year
Member

Registered: 05/30/00
Posts: 1256
Loc: Pearl, MS, 39208
Originally Posted By: upflying


You can see for yourself that you have to remove the center bolt to get the pulley off - 9:30 as posted

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#978435 - 07/20/13 08:22 PM Re: How to remove crankshaft pulley? [Re: BadSS]
LXXXIV SS Offline
Member

Registered: 09/07/11
Posts: 971
Loc: Lower Peninsula, Michigan
Originally Posted By: BadSS
Originally Posted By: upflying


You can see for yourself that you have to remove the center bolt to get the pulley off - 9:30 as posted


Yep, you're right. Plus when I looked at mine closely there was a big fat washer that the damper center screw holds tight against the crankshaft pulley (just like in the video). Like you guys said, that center screw has to come out to release the washer.

Now for my update.

I took my torque wrench to that center screw and measured how much torque it took to rotate the motor. It takes 49.5 foot pounds of torque to spin the motor. The problem is I will need 65 foot pounds of torque (and red loctite) to secure the center bolt back into the crank snout when I'm done painting up the crankshaft pulley.

This means that the motor will start turning as soon as I hit 49.5 foot pounds, and I'll never get to the needed 65 foot pounds unless I lock down the motor somehow. I was thinking maybe I could jack the car up and remove the dust cover from the transmission and wedge a fat screwdriver into the flywheel to stop it from turning. This would allow me to go up front and take the center bolt down to the 65 foot pounds I need.

That's when I got scared and chickened out. So I hand-cleaned the crankshaft pulley with toothbrushes, brake cleaner, and clothes lines (to reach into the grooves), then scuffed it up and painted it while it was still installed in the car.

Thanks for all the help, the center bolt needs to come out for sure, and I learned quite a lot today thanks to everyone.


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#978454 - 07/21/13 07:31 AM Re: How to remove crankshaft pulley? [Re: LXXXIV SS]
SKIDMARK Offline
Member

Registered: 10/12/09
Posts: 1018
Loc: New Bern NC
You can use a strap wrench around the pulley ( with the belt off).Then tighten the bolt to the proper torque.
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#978458 - 07/21/13 10:12 AM Re: How to remove crankshaft pulley? [Re: LXXXIV SS]
LXXXIV SS Offline
Member

Registered: 09/07/11
Posts: 971
Loc: Lower Peninsula, Michigan
I watched the rest of the videos in that series. I have a big question here. At 7:30 of this video, he shows how to install the crankshaft pulley, then explains that all 4 bolts get torqued to 20 foot pounds???

Somehow, this doesn't make sense to me. Look at the 7:30 mark.

http://www.youtube.com/watch?v=mvJNMN-oP68

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#978466 - 07/21/13 12:31 PM Re: How to remove crankshaft pulley? [Re: Richie Cat]
Richie Cat Offline
Member

Registered: 05/03/09
Posts: 1335
Loc: Lake Ronkonkoma, N.Y.

Those 3 bolts hold the pulley onto the damper. It is stuck, hit it lightly with a soft hammer. It will come off. The center bolt only is for the harmonic balancer. [/quote]
I stand corrected, my mistake. Looked at the video.
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#978467 - 07/21/13 12:47 PM Re: How to remove crankshaft pulley? [Re: Richie Cat]
LXXXIV SS Offline
Member

Registered: 09/07/11
Posts: 971
Loc: Lower Peninsula, Michigan
Originally Posted By: Richie Cat


I stand corrected, my mistake. Looked at the video.


Hey Richie, we're all human. What puzzles me now is that in the next video where he puts it all back together, at the 7:30 mark he is only torquing all four bolts down to 20 foot pounds. Check it out.... http://www.youtube.com/watch?v=mvJNMN-oP68 at the 7:30 mark.

Heck, it takes 49.5 foot pounds just to use the center bolt to turn the crank over on a motor. Why is he using only 20 foot pounds of torque???

I wish I knew more about engine building, but I don't.

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#978493 - 07/21/13 09:09 PM Re: How to remove crankshaft pulley? [Re: LXXXIV SS]
BadSS Offline
10+ Year
Member

Registered: 05/30/00
Posts: 1256
Loc: Pearl, MS, 39208
Definite editing or build error.

This is a good start to know more about building a SBC.
http://www.amazon.com/How-Rebuild-Your-Small-Block-Chevy/dp/1557880298

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#978526 - 07/22/13 01:28 PM Re: How to remove crankshaft pulley? [Re: LXXXIV SS]
Hunter79764 Offline
Member

Registered: 04/04/11
Posts: 464
Loc: Grand Prairie, Tx
Couple tips I ran across on a similar deal, only much higher torque needed. These are likely not the best method, but they have either worked for me or sound plausible enough to discuss from anybody who has tried them. As always, there's more than one way to skin a cat, your mileage may vary, and use your best judgement.

-To break the bolt loose, get a long breaker bar supported on the ground and held firmly on the bolt head, and bump the starter. It may take a couple tries, but has worked a few times for me.
-Impacts allow more torque than steady force, so hitting a breaker bar with a rubber mallet may help one that is "almost there".
-Again, impacts work better for breaking one free so if you can fit an impact gun in there, go for it. The engine will spin as well, but the pulsing will often work them loose. Many guys "torque" the balancer bolt on later engines that way (often a 240-ish ft-lb rating).
-Use an old serpentine belt and large locking pliers to make a strap wrench around the harmonic balancer for a backup.
-Stand a 2x4 on it's end under the flexplate so that when you attempt to rotate the engine, the teeth sink into the wood and try to lift the vehicle. Slant-cutting the end may help.
-Pull a spark plug and rotate the engine to the bottom of the compression stroke on that cylinder. Feed some clothes line into the chamber and rotate until the rope is smashed into the head (with valves closed). Haven't tried that one, but seems like it would work for most torque settings, but trying to tighten to 300 ft-lbs with all of the force one one piston/rod/head location might be asking for trouble.
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#978531 - 07/22/13 02:12 PM Re: How to remove crankshaft pulley? [Re: Hunter79764]
LXXXIV SS Offline
Member

Registered: 09/07/11
Posts: 971
Loc: Lower Peninsula, Michigan
Thanks for the tips, Hunter. I'll keep them in mind.

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