01-02-2022, 08:09 AM | #1 |
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S55 Crankshaft/Flywheel Locking Pin Location (need help!)
I'm in the middle of doing a crank hub job on my M2 Competition (I'll do a write up once this is all done), and my engine does not have the hole to insert the flywheel locking pin to lock the crank at TDC. I have looked everywhere and every source (none from official service info, though) I find says it should be near the bell housing under/behind the J-pipe. I have found photos and videos of the pin in place. My engine just has blank aluminum in that spot. I have spent about 3 hours poking around my engine, to no avail. Is there another way to time the crank? I am using a friend of a friend's shop, so I really need to get this done and out of his way.
My car is a 2020 with M6 transmission. I am very perplexed there is no hole for the pin. Please let me know if you've heard of this before! |
01-02-2022, 03:03 PM | #2 |
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I've heard in some cases the transmission must be dropped in order for the flywheel securing tool to be used.
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01-02-2022, 03:48 PM | #3 | |
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Quote:
I purchased the 1 day BMW TIS subscription and found this: Last edited by Bass_Masterson; 01-02-2022 at 04:02 PM.. |
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01-02-2022, 03:52 PM | #4 | |
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Also ISTA is a really helpful tool, you should look into getting that. If I have some time I will try to screen shot the instructions for you, but no promises because I am a bit preoccupied at the moment.
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01-02-2022, 03:54 PM | #5 |
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Here's the image of the locking tool:
This is the thread I got it from, so it might help https://f80.bimmerpost.com/forums/sh....php?t=1561598
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01-02-2022, 04:08 PM | #6 | |
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Please see my above edited post. I will have to take a closer look but I don't recall seeing that plastic plug. No one ever mentioned it while describing this service. Last edited by Bass_Masterson; 01-02-2022 at 04:21 PM.. |
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01-02-2022, 04:11 PM | #7 | |
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So I am going to assume you are referring to the TDC guide pin:
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01-03-2022, 09:51 AM | #9 |
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01-03-2022, 04:31 PM | #10 |
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Nope, that was simple. Just removed spark plug #1 and inserted a clean, smooth rod into the spark plug hole, then turned engine until the rod moved up then briefly stopped before moving back down. Only issue I had was finding (or rather knowing to feel for) that plastic plug to remove for the index pin.
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04-12-2022, 05:46 PM | #11 |
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this picture saved my life couldn't even find it in BMW TIS, got it done! thank youuuuuu
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01-22-2023, 11:13 PM | #12 |
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Where is this located exactly? I can’t tell where this is. I can see the flywheel teeth from underneath the car, if I follow the casing for the flywheel in the direction of the driver side of the car (left), how far up is this whole and image? 90 degrees up roughly? 50? 100? Just trying to gauge a frame of reference for locating the hole, as I can’t tell what I’m seeing in that picture.
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