There's a service manual available from ATSG for about $30 which gives some R and R instructions. Book is probably 5 or 6 hours to R and R.

http://www.atsg.biz/cgi-bin/shopper.cgi?preadd=action&key=EIMP83-7224TM&pricecode=&reference=/cgi-bin/shopper.cgi%3Fsearch%3Daction%26keywords%3Dmercedes%26searchstart%3D0%26template%3DTemplates/SearchResult.html%26pricecode%3D