As my 84 300SD has 183K miles, I'm to the point were I want to tackle the timing chain. It seems like it is recommended that the timing chain tensioner and upper chain guide also be replaced at the same time. **************.com sells a kit with the aforementioned parts for about $134, which seems reasonable.

Thomaspin's wonderful site covers the basics of replacing a timing chain (albeit a different engine), but does not go into how to address the timing chain tensioner and upper chain guide.

http://www.pindelski.com/cars/W126/W107_timing_chain/W107_timing_chain.html

Once I have the valve cover off, will how to address the timing chain tensioner and upper chain guide be obvious or do I have to tear down more of the engine to access these pieces? Is replacing my engine's timing chain as straightforward of a process described on Thomaspin's site?

Thanks everyone...

__________________
~shell
As of 2/2010:
2001 CLK55 0o\=*=/o0
13.6 @ 106mph
10K mi
1984 300SD
260K mi and going and going...
97 S600
46K miles
1991 Sentra SE-R (extremely dorked with)
www.se-r.net