Crankshaft Overview

Fig 1: Crankshaft, Assembly Overview

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

1. Bolt
   • 40 Nm + an additional 90° (1/4) turn.
   • Always replace.
   • Fully threaded.
   • Tighten to 40 Nm (but not the additional 90°) 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 with one another.
3. Bearing Shell for the Bearing Cap
   • Crankshaft bearing shell, allocating. Refer to Fig 3.
   • Without a lubricating groove.
   • Do not interchange used bearing shells (mark them).
4. Crankshaft
   • Axial play, checking. Refer to CRANKSHAFT AXIAL CLEARANCE, CHECKING .
   • Radial clearance, checking. Refer to CRANKSHAFT RADIAL CLEARANCE, CHECKING .
   • Crankshaft dimensions, refer to CRANKSHAFT DIMENSIONS .
   • Locking 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.
   • Crankshaft bearing shell, allocating. 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.

Fig 3: Allocation, Lower Bearing Shells (Bearing Cap)

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

• From the factory, the lower bearing shells are allocated to the bearing cap with the correct thickness. Colored dots on the sides of the bearing shells serve to identify bearing shell thickness.
• The allocation of the bearing shells for the bearing cap is identified by a series of letters on the vibration damper. The first letter in the row of letters represents bearing "1", the second letter is for bearing "2", etc.