Timing chain cover gasket replacement on 4.4

[Spanker]

It might be a bit more work.....but worth the extra piece of mind. Should change the timing chain guides.

[X5only]

Originally Posted by Spanker

It might be a bit more work.....but worth the extra piece of mind. Should change the timing chain guides.

Are you referring to parts 10 and 7, 7 and 10 in the parts diagram?
RealOEM.com * BMW E53 X5 4.4i Timing gear, timing chain, cyl. 1-4

RealOEM.com * BMW E53 X5 4.4i Timing gear, timing chain, cyl. 5-8

I'm getting ready to do both the timing covers (oil leaking) as well and already bought the necessary parts but not the guides you're mentioning (car is at 112K miles). What typically goes wrong with them? Symptoms?

[X5only]

Confirming what Spanker pointed out- apparently the guides are not known to be an issue on the 4.4 with N62 engines (years 2004+) but for M62TU and M62 engines definitely a good PM to do while doing the timing covers.
http://www.xoutpost.com/bmw-sav-foru...ain-guide.html