Main Bearing Shells Allocation

Allocation of the Crankshaft Bearing Shells for the Cylinder Block

Fig 1: Allocation of the Crankshaft Bearing Shells for the Cylinder Block

Courtesy of AUDI OF AMERICA, LLC

• Bearing shells with the correct thickness are allocated to the cylinder block in the factory. The colored dots on the sides of the bearing shell mark the bearing shell thickness.
• The allocation of the bearing shells to the cylinder block is indicated by a letter for each bearing shell on the right side of the cylinder block as shown.

Allocation of Crankshaft Bearing Shells for Bearing Cap 

Fig 2: Allocation of Crankshaft Bearing Shells for Bearing Cap

Courtesy of AUDI OF AMERICA, LLC

• Bearing shells with correct thickness are allocated to bearing cap at factory. The colored dots on the sides of the bearing shell mark the bearing shell thickness.
• The allocation of bearing shells to bearing caps is identified by a letter on the rear crankshaft flange, as shown.
• The letter series begins with crankshaft bearing "1" (belt pulley side) and ends with crankshaft bearing "4" (transmission side).