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Old 27-05-19, 06:54 PM   #1
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Default Flywheel locking

When I try to lock THE flywheel with a 12 mm drill, ackording to Haynes manual, I dont get THE resultat I need.The flywheel can Still be moved back and forward a couple of centimeters.
This is not safe for loosing the crankshaft pulley Bolt.
How do I lock THE flywheel ?
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Old 27-05-19, 07:09 PM   #2
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I used some copper brake pipe, flywheel moved a few mm, then locked cam noproblem
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Old 27-05-19, 08:46 PM   #3
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You NEVER lock the flywheel with locking pins to remove crank bolt anyway!!

If its moving more than 2mm you are in the wrong hole.
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Old 27-05-19, 09:11 PM   #4
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Ok , how do You lock the crank IF You are not using lockingpins then?
In Haynes manual it is the right thing to anyway, and it should be a 12 mm for this. It would be fantastic if someone could show me the proper Hole, maybe in a picture of Link.
Thanks for all replies

Simon
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Old 27-05-19, 09:37 PM   #5
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You jam the ring gear to loosen the crank bolt NEVER EVER use a locking pin to remove a crank bolt locking pins are only for timing purposes

Haynes manuals are not official workshop manuals they are not always accurate.
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Old 27-05-19, 09:55 PM   #6
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Ok in this case It's a 12mm thick steelrod that stops the flywheel, not att the timingbeltwheel at the crank bolt, but right at the actuall flywheel
in a hole wich purpose is to stop the crank.

So maybe it Will be strong enough ,,,,

But Haynes could be wrong, and I sertenly dont succed in My effort to follow Haynes instruktion.
What is your recommendation for a tool that proper stops the crank then?
And where should it be put/mount?
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Old 27-05-19, 10:10 PM   #7
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I KNOW what a locking pin is and it is NOT designed for loosening crank bolts it is for timing set up ONLY.

I may be wrong maybe my 30+ years in the motor trade specialising in french cars i have been doing it wrong all these years !

Good luck you MIGHT be lucky and it does not damage anything but i personally would not risk it.

There are various proper ways of jaming a crank timing pin is not 1 of them.

In modern times most people will use an impact gun on the crank bolt no need to lock anything then.
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Last edited by reliable406; 27-05-19 at 10:13 PM.
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Old 28-05-19, 10:48 AM   #8
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Well I am not doubting your knowledge att all, and I am very grateful for all help I can get, I just want to be shure that You guys understand what I mean.
Since I have not an air impact Gun, just an electric One, I am not shure to be able to loosen the crankbolt with it.
Can You please give me a suggestion for the proper way , and a tool for the job, I would be grateful

Simon
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Old 28-05-19, 12:48 PM   #9
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Easiest way is a bolt or big screwdriver in ring gear but unless you have done it before you wont know how to do it google locking flywheel safely you will no doubt find a few safe options.
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Old 05-06-19, 09:32 PM   #10
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When I do this I leave the opposite wheel on the ground, put it in 5th gear, have someone in the car applying the brakes. The bolt shouldn't be that tight (50Nm or 40 ft-lbs) If it is, a light tap on the head of the bolt with a hammer can sometimes jar it enough to make it easier to take off.

To put the bolt back on, use a little light thread locking compound and do the same thing.

I agree with the other advice here, if you use a pin and it breaks (drill bits are pretty brittle, fine to keep things in position for timing belt replacement but not for tightening resistance) you'll have more grief than you ever wanted.

I've done half a dozen timing belts and a couple of crank pulley replacements (2.0 HDi, 2.1TD, 2.0 VVT petrol) so I'm no expert, just a shade tree mechanic.
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