Sprinter 2500 V6-3.0L DSL Turbo VIN 45 (2007)
Crankshaft Main Bearing: Description and Operation
DESCRIPTION
The bottom of the cylinder block has provisions for mounting the main bearing caps and the oil jets. Four main bearing caps (1) made of gray cast iron
are bolted to the cylinder block. Each main bearing cap has six mounting bolts, four vertical and two horizontal. The horizontal (cross) bolts add
increased rigidity to the cylinder block.
The number three main bearing cap serves as the thrust washer (5) location.
The upper main bearings have a bi-metal construction and feature oil supply holes and center grooves for lubrication of the main journals. The lower
main bearings have tri-metal construction to provide strength where it is needed.
The upper main bearings are available in three different thicknesses and the lower bearings in five. A color coded mark on the side of the bearing is used
