Some mechanics tend to overpack the bearings, the factory manual states an amount something like 1.5 oz (in Grams) this can be estimated. Otherwise it expands and comes out and gets all messy like you see.

__________________
'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!