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Old 04-28-2010, 08:07 AM   #11
the_doc735
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Quote:
Originally Posted by sailor View Post
Posted via FF MobileJust covering all bases w/reverse thread question... (would turn out) Why NOT use impact? Normal tool when you can get at it with one... Reversing directions with an impact helps remove stuck bolts - Same as with wrench but more so as impact gets a better "hit" when you catch it`s mechanism just right - back & forth gets you that extra impact ...
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To loosen the crankshaft pulley bolt you have to turn it counter clockwise. I just recently did this when I changed my timing belt. I used an impact on mine and it took it right off of there without any issues.
...So, I won't "shear the head off the bolt" then? AND back to the original question: HOW MUCH TORQUE DO I NEED FOR THIS OPERATION? Is a 450Nm wrench sufficient for the job in hand?

cheers! ~ many thanx!
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Old 04-28-2010, 10:41 AM   #12
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To loosen the crankshaft pulley bolt you have to turn it counter clockwise. I just recently did this when I changed my timing belt. I used an impact on mine and it took it right off of there without any issues.
what was the torque on your 'impact' ???
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Old 04-28-2010, 10:49 AM   #13
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I bought the 450 Nm 'impact' for 120 from machine mart shop and the guy said it would take that bolt right out - no problem at all !!

I went at it for 20 minutes backward/forward; backward/forward .... AND IT STILL REFUSED TO MOVE!!! ~ complete waste of money from the NO RETURNS MACHINE MART SHOP!!!

This bolt is becoming very expensive to remove. Well if I lay out another 300 I can get an 'impact' with 1000Nm !!! But that's far too expensive for me.

the impact is a clarke: http://www.clarkeinternational.com/pages/clarke-home. Some say crap?

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Old 04-28-2010, 12:18 PM   #14
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450 NM is 332 ft-lbs. I'm betting your crankshaft bolt torque is less than 100ft-lbs. Mine is 88 ft-lbs.

Strap wrench worked for me to hold the pulley while I removed/installed the bolt. Who knows what kind of torque is on it now (450 NM back and forth).

Methods heard used in the past but wouldn't endorse either:

- Extension/breaker bar on a wrench against the ground - then bump the starter. (ouch!).

- same as above but save the starter and bump/rock the car.

- same as above but, - parked on a hill?
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Old 04-28-2010, 01:08 PM   #15
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Posted via FF MobileI`ve heard those suggestions too... can`t vouch for them from experience...The hiil versionsounds like it would solve ALL your problems..... If your Machine Mart is like our Harbor Freight - cheap import junk mostly.... My experience from others buying their electric impacts is that most wouldn`t budge a wheel lug much less a stuck bolt...ratings quite optomistic.... The breaker & bump sounds best if you have a MTX - Luck!
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Old 04-28-2010, 01:35 PM   #16
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Posted via FF MobileI`ve heard those suggestions too... can`t vouch for them from experience...The hiil versionsounds like it would solve ALL your problems..... If your Machine Mart is like our Harbor Freight - cheap import junk mostly.... My experience from others buying their electric impacts is that most wouldn`t budge a wheel lug much less a stuck bolt...ratings quite optomistic.... The breaker & bump sounds best if you have a MTX - Luck!
mtx?
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Old 04-28-2010, 01:58 PM   #17
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more thoughts:

http://www.locostbuilders.co.uk/view...tion=printable

http://www.tegger.com/hondafaq/cranktool/index.html
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Old 04-28-2010, 02:11 PM   #18
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MTX= Standard/Manual Transmission
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Old 04-29-2010, 01:41 AM   #19
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Is the car still drivable? If so take it to a garage and ask them to loosen the bolt for you and then tighten it back up enough to get you home!! I havnt had much luck with electric impacts for high torque bolts. My Ingersol 1/2" impact is rated at over 750 ft lbs. That`ll get r done. One way or another..
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Old 04-29-2010, 02:09 AM   #20
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As for the torque behind it, I have no idea. It's just an old impact gun that my dad has. I will ask him tomorrow what the torque setting is on his impact gun if he even remembers lol. I have also removed these bolts from other cars using two people, one person to hold the pulley and another person with a short 6 point socket and breaker bar with an extention on the breaker bar. Just had to use short tugs at it to loosen the bolt up but it came out fine in the others as well.
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