How to torque crankshaft pulley bolt with no air? -s : | platizazvonok.ru
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post #1 of 27 (permalink) Old 09-26-2017, 08:02 PM Thread Starter
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How to torque crankshaft pulley bolt with no air?

How do you torque down the crankshaft pulley bolt on an automatic transmission 2009 Elantra without using an impact gun? I could hit it with the impact, but I want it to be correctly torqued within range. Any specific methods or special tools to use? None of the local auto parts stores had anything to rent for this application. Thanks.
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post #2 of 27 (permalink) Old 09-26-2017, 10:18 PM
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I have looked at youtube videos on how to do a timing belt change
And they all gloss over how to tighten up the crankshaft bolt.
Many do it with an impact wrench. Luckily it is easy enough to buy an electrical powered one.
Harbor Freight has one for under one hundred dollars.
And there are a couple that are brand named cordless that produce enough torque sold by
Amazon, Lowes, Homedepot, etc.
Auto Parts Store will sell you an impact wrench.
Some have enough power but most do not.
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post #3 of 27 (permalink) Old 09-26-2017, 10:25 PM
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I spank them for years with my 3/8 Ingersoll Rand and short 7/8" 6pt impact socket with no issues

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post #4 of 27 (permalink) Old 09-26-2017, 10:35 PM Thread Starter
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Originally Posted by sbr711 View Post
I spank them for years with my 3/8 Ingersoll Rand and short 7/8" 6pt impact socket with no issues
Do you use any Locktite?

I was thinking about hitting it with the impact gun and Locktite. That is a last resort if i can't figure out how to manually torque it down.
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post #5 of 27 (permalink) Old 09-26-2017, 10:37 PM Thread Starter
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Originally Posted by avisitor View Post
I have looked at youtube videos on how to do a timing belt change
And they all gloss over how to tighten up the crankshaft bolt.
Many do it with an impact wrench. Luckily it is easy enough to buy an electrical powered one.
Harbor Freight has one for under one hundred dollars.
And there are a couple that are brand named cordless that produce enough torque sold by
Amazon, Lowes, Homedepot, etc.
Auto Parts Store will sell you an impact wrench.
Some have enough power but most do not.
I do have an impact wrench but prefer not to use it if I can figure out how to torque down the crankshaft pulley bolt manually.

I ran across two methods that seem doable.

One involves threading heavy gauge wire through the harmonic balancer spoke holes numerous times and securing it to part of the frame.

A method that sounds better is picking up a $10 Harbor Freight locking chain clamp and using the old timing belt wrapped around the harmonic balancer (about 6") to keep it in place while torquing down the bolt. Or maybe picking up a strap wrench (Home Depot maybe) that can accommodate a 6" diameter pulley. Maybe also use a 2-3' cheater bar on the strap/chain wrench.
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post #6 of 27 (permalink) Old 09-27-2017, 10:16 AM
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I torqued it. I would avoid impact to not damage the crankshaft and to be able to remove the bolt at some later time...

My trick is as follows.
I do not see your engine bay, so it may differ a bit.

Get a C-clamp and clamp it on the serpentine belt. Pick A/C or alternator. Older versions had PS pump up high what made it even easier.
Do not tighten it too much. Just enough to get some tension.

Then proceed to torquing the bolt. Belt will not slip and the clamp will make sure the belt will not go over the pulley you locked in onto. Some tricks, that I did not like much, were to put a screwdriver or some "stick" into a pulley and lock it against something. That would translate the torque into the small area of contact plus possibly bending the pulley.
Belt trick will not cause any damage and the torque transfer from the tightening process will not be large stress on the pulley due to spread of the forces on the belt.
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post #7 of 27 (permalink) Old 09-27-2017, 10:31 AM
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On some crank pulleys I've use a pipe chain wrench, but when I did a 2007 elantra I used a wedge of wood between the frame and pulley, when the pulley turned it tightened against the wedge and I got sufficient torque on the bolt.

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post #8 of 27 (permalink) Old 09-27-2017, 11:49 AM
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The SBRs of the world who do this work every day, gain confidence over time using air tools, and I'm sure their results are very solid. But as a DIYer who does this stuff very infrequently, I don't like the idea of using anything other than a torque wrench for something as important as a crank bolt. And it's apparent that you're trying to follow that same path as well.

Some vehicles have a port located somewhere on the tranny case, which gets opened and provides the access for the flywheel to be pinned. Is it possible that Hyundai built one of those into this vehicle?

I've always been puzzled that the other automakers didn't adopt the highly effective built-in hex insert that Honda uses, which allows the harmonic balancer to be locked into place with inexpensive hand tools. On my daughter's Civic, I used a breaker bar to remove the crank bolt, and a torque wrench to put it back on to the exact book torque spec. Simple, fast, and no guesswork for a DIYer like me. I liked this Honda setup so much that I ported it to do Chevy crank bolts. A bit of a PITA to fab the setup, but worked just as well once that was done. I don't know if something like this would even be possible with the Hyundai harmonic balancer, but I'm mentioning it just in case you want to investigate further.
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post #9 of 27 (permalink) Old 09-27-2017, 12:34 PM
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Quote:
Originally Posted by kiaguy1 View Post
The SBRs of the world who do this work every day, gain confidence over time using air tools, and I'm sure their results are very solid. But as a DIYer who does this stuff very infrequently, I don't like the idea of using anything other than a torque wrench for something as important as a crank bolt. And it's apparent that you're trying to follow that same path as well.

Some vehicles have a port located somewhere on the tranny case, which gets opened and provides the access for the flywheel to be pinned. Is it possible that Hyundai built one of those into this vehicle?

I've always been puzzled that the other automakers didn't adopt the highly effective built-in hex insert that Honda uses, which allows the harmonic balancer to be locked into place with inexpensive hand tools. On my daughter's Civic, I used a breaker bar to remove the crank bolt, and a torque wrench to put it back on to the exact book torque spec. Simple, fast, and no guesswork for a DIYer like me. I liked this Honda setup so much that I ported it to do Chevy crank bolts. A bit of a PITA to fab the setup, but worked just as well once that was done. I don't know if something like this would even be possible with the Hyundai harmonic balancer, but I'm mentioning it just in case you want to investigate further.
I'd have no problems using an air tool if I had one, it's just a d**b a** crank bolt and you have to make sure it gets sufficient tight that it won't work loose from the vibrations in that area. Trying to hit the exact torque spec- IMO unecessary. When you start torqing stuff 120 lbs and over things get on pretty tight and secure.

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post #10 of 27 (permalink) Old 09-27-2017, 12:59 PM
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Originally Posted by dtech View Post
I'd have no problems using an air tool if I had one, it's just a d**b a** crank bolt and you have to make sure it gets sufficient tight that it won't work loose from the vibrations in that area. Trying to hit the exact torque spec- IMO unecessary. When you start torqing stuff 120 lbs and over things get on pretty tight and secure.
It is not just a bolt.
If you tighten it too much, which is easy with air tools, it may snap when car gets hot and cold again.
Also, all the waves you send through the shaft into the pistons via connecting rods, will do some other damage.
Just how many wheels fell off due to too high torque on the lug nuts?

There is a lot of explanation, more or less scientific, to read why air tools should be avoided when working on engine.
Suspension, chassis, and other pieces - you are OK. But not the engine and especially this bolt.
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