E 450 V8-6.0L DSL Turbo VIN P (2004)
4. Using the special tools, drive the inner pinion bearing cup into the axle housing.
Setting pinion depth
5. CAUTION: Whenever the cups are removed, new differential pinion bearings must be installed.
NOTE: If a feeler gauge of the specification shown in the illustration can be inserted between a cup and the bottom of its bore at any point around
the cup, the cup is not correctly seated.
Make sure the cups are correctly seated in their bores.