Quote:
Originally Posted by X5M-ISH
Generally when everything is pulled and your standing there looking at the timing chain(s), cams, VANOS units and all that, you go nuts with zip ties to secure the timing chain(s) in place after you’ve locked the crank at proper TDC. This may involve manually turning the crank until you can get the pin in the hole and verify the entire system is TDC. For everything else like the VANOS, cam gears and cams you scribe the metal on non-wear surfaces. Use your smart phone to take smart pictures of you being smart with all your zip ties and scribes and back it up with a few notes on paper.
There is really no rush during these steps so being as thorough as possible allows you to reference your material when you are ready for reassembly. Because parts are under tension and/or pressure they can rotate when you least espect it or by accidentally bumping the wrong thing or accidentally partially disassembling the wrong thing. Your thoroughly done tear down to secure the timing system will mitigate problems.
This is not to fault the OP, but to say that as a home mechanic, anything is possible. I’ve accidentally installed piston rings upside down on 1 of 8 pistons requiring a complete tear down and reassembly. All because of the way I grabbed the parts and layed them on my bench. I did it one time differently and failed to verify before installation. Good times. Strive to lock/scribe everything you can in place and just take your time.
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Amen to that! I really thought I had it nailed the first time and stubbornly continued to try and trouble shoot around it... Learned that lesson for sure but it took me completely exhausting every other possibility first.
You can bet I will lock everything in place this time and once I think I’m finished - I’ll check it again just to be sure
Will keep you guys posted!
06-08-2019, 01:56 PM
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