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Help-trouble pulling 400 damper bolt. #288602
04/14/09 09:00 PM
04/14/09 09:00 PM
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polkat Offline OP
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I'm trying to loosen the front crank (damper) bolt, but with the engine and tranny still in the car (actually truck) the engine just spins when I turn the breaker bar, which of course will happen. I know there is a tool for this (bolts to the center of the damper), but I can't afford it right now and have no shop to make one. Someone told me to stuff one of the cylinders with rope to lock the engine, but I'm a bit skeptic about that. What have you folks tried? Thanks!

Re: Help-trouble pulling 400 damper bolt. [Re: polkat] #288603
04/14/09 09:03 PM
04/14/09 09:03 PM
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Garden Grove, CA
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An impact gun is the easy way to go....
If you don't have one, then the rope in the cylinder is a way to go. Just run a piston about 1/2 - 3/4 of the way and feed a bunch of small rope into the spark plug hole and slowly turn the engine until it compresses the rope and stops. Then loosen. Do it with both valves closed so you don't worry about hurting them.

Re: Help-trouble pulling 400 damper bolt. [Re: polkat] #288604
04/14/09 09:04 PM
04/14/09 09:04 PM
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Kirkland, Washington
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Quote:

I'm trying to loosen the front crank (damper) bolt, but with the engine and tranny still in the car (actually truck) the engine just spins when I turn the breaker bar, which of course will happen. I know there is a tool for this (bolts to the center of the damper), but I can't afford it right now and have no shop to make one. Someone told me to stuff one of the cylinders with rope to lock the engine, but I'm a bit skeptic about that. What have you folks tried? Thanks!




You dont have an impact? This will work: position a breaker bar against the drivers side of the k-frame....hold it steady and firm, while an assitant bumps the starter. Yes its scary. Yes it works. Done it. Remove the fan first!

Re: Help-trouble pulling 400 damper bolt. [Re: Pacnorthcuda] #288605
04/14/09 09:38 PM
04/14/09 09:38 PM
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polkat Offline OP
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I tried the breaker bar against the frame and bumping the starter. The socket just kept jumping off the bolt head. Yes, it's a good 1-1/4" socket but the weight of it and the bar causes it to lean toward the ground (the bolt head might also be a bit worn) and because I live in a rural area without mechanical skilled friends...well, no help there.

So the rope idea actually works? I figured that both valves should be closed (considering the engine will try to rotate backwards as I pull the breaker bar. Any idea on what kind of rope to use? Wouldn't want to leave cut off rope pieces in the cylinder.

Re: Help-trouble pulling 400 damper bolt. [Re: polkat] #288606
04/14/09 09:47 PM
04/14/09 09:47 PM
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Garden Grove, CA
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A buddy of mine used cloths line once I think (I have an impact, so only heard from friends who did it..)
Just leave the rope hanging out a foot or two so you don't lose it down the cylinder

(thinking back...another friend used nylon rope from memory.. )

Re: Help-trouble pulling 400 damper bolt. [Re: polkat] #288607
04/14/09 09:51 PM
04/14/09 09:51 PM
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So Cal
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Don't need to think too much into it, as long as the rope is small enough to fit in the hole and strong enough no to break when you pull it out.


Allen Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first. Life was a little easier when I was just a wrench.
Re: Help-trouble pulling 400 damper bolt. [Re: HealthServices] #288608
04/14/09 09:54 PM
04/14/09 09:54 PM
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Upper Midwest
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Very easy to put a couple of the pulley bolts back in most of the way and put a bar between a couple of them and use as a break to hold the crank while breaking the damper bolt loose.

Re: Help-trouble pulling 400 damper bolt. [Re: MoparforLife] #288609
04/14/09 10:02 PM
04/14/09 10:02 PM
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Moparforlife, I thought of that too, but this is a 400 so the bolt holes are recessed inside the front surface of the inner dampher surface, In other words the pully bolt heads don't stick out far enough to get a bar on them. I could of course use longer bolts, but the longer the bolts the bigger the chance of bending them. Still, I guess it's worth trying with longer bolts. Might try the rope trick first.

Another weird thing about this 400 is that it only has 5 pully bolts! There's not even a hole in the damper for a sixth bolt. Anyone ever seen this?

Re: Help-trouble pulling 400 damper bolt. [Re: polkat] #288610
04/14/09 10:23 PM
04/14/09 10:23 PM
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Charlotte, NC
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I'm guessing that this has an auto trans so pull the front dust shield on the trans and get a friend to stop the flex plate with the pry bar or if you can't get help jam the pry bar in there to stop the crank.

Re: Help-trouble pulling 400 damper bolt. [Re: 446acuda] #288611
04/14/09 10:47 PM
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Thanks! Didn't think of that.

Re: Help-trouble pulling 400 damper bolt. [Re: 446acuda] #288612
04/14/09 10:52 PM
04/14/09 10:52 PM
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Carstairs, Alberta, Canada
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Quote:

I'm guessing that this has an auto trans so pull the front dust shield on the trans and get a friend to stop the flex plate with the pry bar or if you can't get help jam the pry bar in there to stop the crank.





Pry bar beteen block, and the teeth on the converter, or on the head of a converter bolt.
Should work.

In all hoesty, I always use an impact wrench.

Re: Help-trouble pulling 400 damper bolt. [Re: 446acuda] #288613
04/14/09 11:20 PM
04/14/09 11:20 PM
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Mass
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Quote:

I'm guessing that this has an auto trans so pull the front dust shield on the trans and get a friend to stop the flex plate with the pry bar or if you can't get help jam the pry bar in there to stop the crank.







I usually wedge in a peice of oak or other hard wood for the flyweel, or converter teeth to sink into, this way I don't bust teeth or a casting with a pry bar

Re: Help-trouble pulling 400 damper bolt. [Re: Pacnorthcuda] #288614
04/14/09 11:28 PM
04/14/09 11:28 PM
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Mass
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This will work: position a breaker bar against the drivers side of the k-frame....hold it steady and firm, while an assitant bumps the starter. Yes its scary. Yes it works. Done it. Remove the fan first!









.....all I can think is, if this goes wrong?....man!, it's gonna HURT!

5165152-greg1.jpg (26 downloads)
Re: Help-trouble pulling 400 damper bolt. [Re: DAYCLONA] #288615
04/14/09 11:31 PM
04/14/09 11:31 PM
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So Cal
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Make sure to use jack stands and have a jack underneath to catch the car if the car falls off.

One time in band camp…

Well as a kid my friends and I had a hard time once and while attempting to pull loose a bolt, we inadvertently pulled the car off the jack stand!


Luckily the jack caught the car and no one got hurt.



Allen Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first. Life was a little easier when I was just a wrench.
Re: Help-trouble pulling 400 damper bolt. [Re: DAYCLONA] #288616
04/14/09 11:34 PM
04/14/09 11:34 PM
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So Cal
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Quote:

This will work: position a breaker bar against the drivers side of the k-frame....hold it steady and firm, while an assitant bumps the starter. Yes its scary. Yes it works. Done it. Remove the fan first!










.....all I can think is, if this goes wrong?....man!, it's gonna HURT!






When we were young and did not have air tools this is how we always did it.


Cannot do it on a Honda though they turn the other way.


Allen Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first. Life was a little easier when I was just a wrench.
Re: Help-trouble pulling 400 damper bolt. [Re: polkat] #288617
04/15/09 01:07 AM
04/15/09 01:07 AM
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Oregon
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Why not just use the damper holding tool that lots of people sell? I'm always amazed when this topic comes up and nobody seems to even know about the tool. Mancini Racing has it as MRE712330.

Re: Help-trouble pulling 400 damper bolt. [Re: AndyF] #288618
04/15/09 01:10 AM
04/15/09 01:10 AM
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A gulag near you.
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Quote:

Why not just use the damper holding tool that lots of people sell? I'm always amazed when this topic comes up and nobody seems to even know about the tool. Mancini Racing has it as MRE712330.




That would require spending money , I don't think it's an option

Re: Help-trouble pulling 400 damper bolt. [Re: polkat] #288619
04/15/09 01:47 AM
04/15/09 01:47 AM
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Chilliwack B.C. Canada
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Years ago my Dad taught me an old farmer's trick when you don't have an impact. Put a long wrench on the bolt and hit the other end with a hammer. The sharp taps have the same effect as an impact. It always works for me when theres no air around.

Sheldon

Re: Help-trouble pulling 400 damper bolt. [Re: RUNCHARGER] #288620
04/15/09 05:41 PM
04/15/09 05:41 PM
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Well, I finally got it loose! I put an 8 grade bolt into one of the pully bolt holes and cut a length of 1" square hardwood which fit from the passenger frame rail to the bolt. It bent the hard bolt but oddly didn't hurt the wood. Anyway, it's out.

Now, I can get the damper pulled! Stripped the threads on my old puller! I'll get another one but, what's a good soaking fluid in the mean time?
Thanks for all the replys!

Re: Help-trouble pulling 400 damper bolt. [Re: polkat] #288621
04/15/09 05:59 PM
04/15/09 05:59 PM
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All you need is a cheap steering wheel puller to pull the damper. now that you have the damper bolt loose, take it out and take the washer off it. Now put it back and thread it into the crankshaft and use the head of the bolt as a base for the puller foot. put 2 bolts into the damper to hold the puller 'wings' and turn the center bolt against the head of the crank bolt. The damper will clear the bolt head without the washer on it. It really don't take much of a puller to pull the damper. Make sure to put the crank bolt back in or the foot of the puller may booger up the crankshaft threads.

Re: Help-trouble pulling 400 damper bolt. [Re: polkat] #288622
04/15/09 07:35 PM
04/15/09 07:35 PM
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So Cal
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  • Go to one of the parts places you buy your parts from, some loan tools out for free.
  • rent one
  • buy a good one
  • buy a cheapie from Harbor freight


  • Allen Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first. Life was a little easier when I was just a wrench.
    Re: Help-trouble pulling 400 damper bolt. [Re: HealthServices] #288623
    04/15/09 07:55 PM
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    polkat Offline OP
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    Yes, I know all this. I am using my own real damper puller with the crank bolt head as a pushing surface, just as was mentioned. Damper won't budge. Some fear that the wrench will break (or the puller!) before the puller finally yanks it off. That's why I was asking about possible stuff to soak it with and let it sit a while. I've tried a spray penetrating fluid that so far hasn't helped.

    Re: Help-trouble pulling 400 damper bolt. [Re: polkat] #288624
    04/15/09 08:05 PM
    04/15/09 08:05 PM
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    Can you get at the puller main bolt to give a good hard rap with a BFH to jar it while it has alot of tension on the damper.

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