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Post by idol on Jan 16, 2006 19:58:09 GMT -5
Hi guys, I am trying to remove the crankshaft pulley from a 1993, 3.2L (v-6) Izuzu Trooper. It has an automatic transmission. I have attached a lock jig to hold the pulley tight and i have soaked the nut with PB Blaster to try to loosen it. But to no avail!
My question is this! Is the bolt that is attaching the pulley a standard right hand thread or is it a "left hand thread"?
I am aware that auto manufacturers have slowly drifted away from using the left hand thread on crankshaft pulleys, but is it possible this engine has one???
Does anyone know, your help would be greatly appreciated. Thanks Idol
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Post by DanD on Jan 16, 2006 21:42:39 GMT -5
I’m at home right now but I’ll have a look tomorrow to see if there is anything that Mitchell has to say about this. I think you’re right that it’s likely right hand thread on the bolt but you never know until you’ve done one before.
Some of the Asian imports use an unbelievable amount of torque on the crank pulley bolts and you may just have to find the right size of wrench.
If you don’t hear back from me; bump this back to the top of the forum.
Dan.
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Post by idol on Jan 17, 2006 5:51:09 GMT -5
Thanks DanD,
As you said, the Asain imports do tend to have the Crankshaft bolt really tight, but on this Izuzu, it is amazingly tight. Thanks for looking into this for me, I'll check back. george(Idol)
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Post by DanD on Jan 17, 2006 7:38:19 GMT -5
No it doesn’t say anything about the crank bolt being left hand thread, usually they do in a side note.
The torque spec on the bolt is 123 foot-pounds, so it’ll take a bit of force to get it moving.
Just for comparison sake the wheel nut torque for this Trooper is 80 to 94 foot-pounds.
Get a bigger wrench. LOL
Dan.
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Post by idol on Jan 17, 2006 17:08:19 GMT -5
Thanks for the research DanD. I will go back at it. I'm not so sure I can get a much bigger wrench on it. But to give you an idea of how tight this nut is, and why I thought I'd ask my mechanic colleagues for help......I first used an 125psi air impact wrench with a 1/2 drive. That tool didn't even phase the bolt, so then i used a 1/2-drive breaker and that did nothing but turn the engine, next I got out my "big guns" , I have a set of sockets with 3/4-drive and the breaker handle is 2-feet , and of course I had to install a crank pully lock jig...Still no luck, so before I logged in to ask for others help I added an extension to the breaker and ......Nothing! Of course now you can see why I'm a bit nervous, and confused......but I'm heading back to it right now. Thanks for the torque value, no I'm know what I'm working against.... I'll let you know what happens.........George(Idol02)
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