4.7L Engine Takedown *Lots of Big Pics
German?
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Joined: Oct 2015
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cam timing
on 4.7. have all marks lined up. remember pulling off sprocket from cam that it did rotate a little bit. now I have to move the cam some to get the sprocket back on. is this right? Just seems so weird t have to do that. even the manual says it will rotate some. why? can you help...
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Joined: Apr 2020
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That "main timing sprocket" is the idler sprocket and if your planing on re-using the engine your going to have to replace the main tensioner you broke and the timing chain guides I just did my 4.7 cost around $500 in parts with new timing chains and all gaskets ands seals took about 6 hrs you have to get both cams and crank at TDC align the chains properly on idler and crank sprocket slide it all in place without moving chains then remove cam sprockets w/out moving cams to put the chains on them aligning the dots then reinstall sprockets on cams again w/out moving cams from TDC then hand turn the crank w/wrench 2 full engine rotation and check that all sprockets are back at TDC and that's just to set the timing! It's not a job that just anyone should take on especially someone that don't even know what the parts they are removing are called!
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Joined: Apr 2020
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Make sure you get NEW chain guides. The plastic of the guide will usually shatter when trying to get tension off.