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Crankshaft damper won't come off!!

 
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Old 31 May 2010, 07:18 pm
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Default Crankshaft damper won't come off!!

I have an '03 PT and just starting to replace broken timing belt but the crankshaft damper will not budge.

My first attempts bent the main bolt on my trusty 20yr old three finger puller and the brass rod I used.

The next attempt I modified an hardened steel flat head punch on my mill for reasonable fit ~ nice round end with the other end with a small recess to center the replacement puller.

All looked good and well centered, all fingers secure but the dam damper would not budge!!! So lots of WD40 sprayed in and out + left overnight.

Next day still would not budge ~ checked the pin and it showed contact at the end and no binding any where else ~ the bottom of the hole in the crank shows pressure at the end that matched the pin. No other binding anywhere else ~ take the pressure off and you can hand turn the rod easily.

I upgraded to a massive 5 ton hydraulic puller and took the fingers + plates off the smaller puller so that it still pulls at the center as described in the manual.

The setup was good and secure and well centered but all I was able to do was bend a set of forged metal fingers ~ not once but twice!!!!

I have never had this problem in almost 40yrs working on cars and machinery ~ I am utterly stumped.

Any suggestions?
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Old 31 May 2010, 11:14 pm
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Default Re: Crankshaft damper won't come off!!

i used a three claw 2ton puller when u get the screw out i put a small rachet extession rod down the shaft and slowly racheted down on to the entention. makes a lot of noise like ur breaking it but it came off clean went back on just as well.Take ur time and use some kind of lub i like white lithium greese by blaster.Oh yea use a good quality extention i used craftsman life time replacement hassel free let me know if it works for u
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Old 31 May 2010, 11:22 pm
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Default Re: Crankshaft damper won't come off!!

chrystler and their special tools is the problem u need like i had posted some thing strong enough to go down into where the bolt use to be. it has to pull and push type thing involved reason i use a ratchet extention was the base of it helped keep the advancing bolt centered kragen oriley's has tools they lend out if u have one near u
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Old 01 Jun 2010, 09:32 am
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Default Re: Crankshaft damper won't come off!!

The Chrysler special tool works great for us in the shop. The problem is that it's corroded. WD-40 is not a penatrating fluid, it's a lubricant and moisture repeller. Pick up a can of PB Blaster and soak it really good over night. It should come off pretty easy after that.
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Old 01 Jun 2010, 04:47 pm
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Default Re: Crankshaft damper won't come off!!

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Old 03 Jun 2010, 09:19 am
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Default Re: Crankshaft damper won't come off!!

Quote:
Originally Posted by xwing777 View Post
Some random chart doesn't mean it's a penatrating fluid.

I say again, pick up a can of PB Blaster. I recently did an engine rebuild on an old Dakota and initially tried using WD-40 for the crank bolt. I ended up using an entire can over the course of three days.

When I cam home with a breaker bar and got it off, the threads were bone dry. If WD-40 penatrates, it sure does a lowsy job!
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Old 03 Jun 2010, 06:41 pm
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Default Re: Crankshaft damper won't come off!!

Thank you all for your very useful suggestions ~ I got it off!!

My local parts shop loaned me a very heavy duty tool designed for the job

This made short work of it and its use was free.

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Old 03 Jun 2010, 09:48 pm
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Default Re: Crankshaft damper won't come off!!

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Originally Posted by heifetz17 View Post
Some random chart doesn't mean it's a penatrating fluid.
Hmmm..I guess the manufacture doesn't know what they are making then since it comes directly from their site and not some random chart
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