Crankshaft Overview

Fig 1: Identifying Crankshaft Assembly Overview

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

1. Bolt 
   • 40 Nm + 90° (1/4) additional turn.
   • Always replace.
   • Fully threaded.
   • Tighten to 40 Nm (but not any further) to measure the radial play in the crankshaft.
2. Bearing Cap 
   • Bearing cap 1: Belt pulley side.
   • Retaining tabs on the bearing shells and cylinder block/bearing caps must align above one another.
3. Bearing Shell, for the Bearing Cap 
   • Without a lubricating groove.
   • Do not interchange used bearing shells (mark them).
4. Crankshaft 
   • Axial play new: 0.07 - 0.21 mm.

     Wear limit: 0.30 mm

   • Measure radial clearance using Plastigage.

     New: 0.023 - 0.043 mm wear limit: 0.07 mm

   • Do not rotate the crankshaft when measuring the radial play.
   • Crankshaft dimensions, refer to CRANKSHAFT DIMENSIONS .
   • Lock the crankshaft, refer to CRANKSHAFT, LOCKING .
5. Thrust Washers 
   • For bearing 3.
   • The side lubricating grooves face outward.
6. Bearing Shell, for the Cylinder Block 
   • With a lubricating groove.
   • Identification for replacement part ordering, refer to Fig 2.
   • Do not interchange used bearing shells (mark them).
7. Cylinder Block 

Fig 2: Identification Of Top Crankshaft Bearing Shells

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

From the factory, the upper bearing shells are allocated to the cylinder block with the correct thickness. Colored dots serve to identify the bearing thicknesses.

The letters marked on the lower sealing surface of the cylinder block identify which bearing thickness must be installed in which location.

G - Yellow

B - Blue

W - White