My #1 guess is the item circled in black; is that an axle out of the diff?
My #2 guess is the item circled in red; that axle boot looks a bit funny, almost as if something is impinging on it.
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"Senior Luna, your sense of humor is still loco... but we love it, anyway." -rickymay ____
"Your sense of humor is still loco... 
" -MBeige ____
"Señor Luna, your sense of humor is quite järjetön" -Delibes
1982 300SD -- 211k, Texas car, tranny issues ____ 1979 240D 4-speed 234k -- turbo and tuned IP, third world taxi hot rod
2 Samuel 12:13: "
David said to Nathan, “I have sinned against the Lord.” And Nathan said to David, “The Lord also has put away your sin; you shall not die."