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Old 01-13-2025, 09:47 AM   #1
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Originally Posted by LoneWolfGal View Post
In any case, after the lift table arrives I'm going to pull the bearing and eyeball it before I order the new one.
Just remember to lock the cams and remove the chain tensioners 'before' you remove the flange cover, and of course that dual row bearing that you will be removing will be in great condition..
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Old 01-13-2025, 10:28 AM   #2
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Just remember to lock the cams and remove the chain tensioners 'before' you remove the flange cover, and of course that dual row bearing that you will be removing will be in great condition..
Agree completely. I understand a few folks have gotten away with it without locking the cams, and I also read that 5-chain engines are less susceptible to jumping a tooth during the process, but I don't like taking chances. I borrowed LN's official toolkit, which includes the cam-locking widget. BTW, I read the tensioners can be simply loosened instead of removed. What's your thinking about that?
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Old 01-13-2025, 11:20 AM   #3
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Originally Posted by LoneWolfGal View Post
Agree completely. I understand a few folks have gotten away with it without locking the cams, and I also read that 5-chain engines are less susceptible to jumping a tooth during the process, but I don't like taking chances. I borrowed LN's official toolkit, which includes the cam-locking widget. BTW, I read the tensioners can be simply loosened instead of removed. What's your thinking about that?
If I remember rightly the tension of the chains pulls the IMS off center making the reinstallation of the flange a challenge. If you are going to change the chain tensioner pads in the heads you have to remover the tensioners, so do the IMSB at the same time. By the way, in the PET they are called chain adjusters, which is handy to not confuse them with other parts that are tensioners... but I'm a minority of one who would like to adopt the Porsche nomenclature.
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