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Crank Shaft Tming Gear Bolt

 
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PostPosted: Thu Feb 17, 2000 11:18 pm    Post subject: Reply with quote

From: Roland
Email: michely@home.com
Date: 18 Feb 2000
Time: 00:18:24

Hi again,
can anyone tell me if the bolt which holds the
lower timing gear to the crank shaft has regular
or reverse threads (ie turn counter-clockwise or clock wise to remove). After fighting with it for a couple of hours (no, its not rounded of YET)
I figured I should ask someone else. I am open to any suggestions which may help in removing it.

PS: The engine is still in the car but i need to replace the crankshaft seal & oilpan gasket.

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PostPosted: Fri Feb 18, 2000 6:11 am    Post subject: Reply with quote

From: Webmeister
Email: webmeister@924.org
Date: 18 Feb 2000
Time: 07:11:51

Ah yes. Know it well. We have a comment on the 'LJ 931 Project' about this very thing. Need to put it in the Tech Section. We also wondered at one point if it was reverse threads. It's not.

All years are identical. And this sucker is TIGHT. Standard threads, just needs an industrial strength impact wrench to loosen; or a decent breaker bar and someone to hold the brakes for you. It is a 24mm bolt head; I always use a 15/16 as it is a better fit. The replacement torque is 180 ft-lbs / 25 m-kg.

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PostPosted: Fri Feb 18, 2000 7:34 am    Post subject: Reply with quote

From: Vaughan Scott
Email: vscott39@hotmail.com
Date: 18 Feb 2000
Time: 08:34:05

I've actually had better luck having someone hold the flywheel tight at the other end (w/ a screwdriver through the flywheel inspection/timing hole, but a flywheel lock at the starter hole would be much better) and using the most incredibly long breaker bar on it.
The reason for this is most impact wrenches (excluding the industrial-strength ones) have a breakaway torque (max torque output) below the torque needed to break the bolt loose.

Good luck!

Vaughan

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PostPosted: Fri Feb 18, 2000 9:13 pm    Post subject: Reply with quote

From: Roland
Email: michely@home.com
Date: 18 Feb 2000
Time: 22:13:44

Thanks for your help guys. I locked the crankshaft through the inspection hole in the bellhousing, went out and got myself a 6 foot piece of steel tubing, and using a 15/16 six-sided socket, a breaker bar and a 6 foot extension was able to break the bolt loose in minutes - boy was it tight. (after having wrestled with this bolt every day this week)
Thanx again,
Roland


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