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Cant get crankshaft pulley bolt off!

 
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lokizan
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PostPosted: Fri Jun 08, 2012 7:25 pm    Post subject:  Cant get crankshaft pulley bolt off! Reply with quote

02 3.8

Im trying to change my crankshaft position sensor but i cant get the crankshaft bolt off. Im using 1/2 impact, albeit a cheap one and im wondering if i just need to use one with more torque, its rated at 250ft/lbs, didnt think the bolt was on that tight. Tried smacking the bolt with a large hammer and cant quite find anything to hold the crankshaft so i can use a breaker and cheater bar on it. Tried the starter method and that didnt budge the bolt. Any suggestion on how to get it off?
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98ss
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2002 Chevrolet Impala
2011 Chevrolet Silverado


PostPosted: Fri Jun 08, 2012 10:02 pm    Post subject:   Reply with quote

Try increasing the line pressure to the impact. It will make a difference if the air line is 3/8 or 1/2 as well as the fittings on the line. Sometimes you can try a little heat on the bolt, but usually a good impact does the trick. If you can spring for a new impact, a good one is a ingersol rand 2131 which is the same as the craftsman professional model.

I had one on a 22re motor that my 2135 ti max wouldn't take off till it was cherry red, but it also had 379k miles on it.
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lokizan
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PostPosted: Fri Jun 08, 2012 11:26 pm    Post subject:   Reply with quote

I blew my gun increasing the pressure to 100psi! LOL like i said it was a very cheap model so i wasnt suprised. Im thinking about renting an electric impact tomorrow, im not even sure a more powerful pneumatic impact will work since my compressor can only operate @ 90psi 4.0cfm max. I have read online how guys are swearing by the starter method, i may give that another try tomorrow, i just dont want to destroy my starter or possibly mess up the flywheel
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98ss
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Location: Ann Arbor

2002 Chevrolet Impala
2011 Chevrolet Silverado


PostPosted: Sat Jun 09, 2012 12:54 pm    Post subject:   Reply with quote

Wow, 100 psi shouldn't break the hammers in the impact, hb special? There is a video of some guys who put a breaker bar and a socket on the bolt and tried to start the car. Broke the bolt loose. Seems like a bad idea.
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lokizan
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PostPosted: Sat Jun 09, 2012 6:35 pm    Post subject:   Reply with quote

Got the bolt off! I soaked it with pb blaster and waited overnight and the next day used the starter method and it came right off no problem!
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