Overview - Crankshaft

Fig 1: Crankshaft Assembly Exploded View

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

1. Cylinder Block
2. Cylinder Block Bearing Shell
   • With oil groove
   • Lubricate
   • Do not interchange used bearing shells (mark them)
   • Crankshaft bearing shells identification (classification). Refer to MAIN BEARING SHELLS ALLOCATION .
3. Crankshaft
   • After removing, set it aside so that the sensor wheel  OVERVIEW - CRANKSHAFT is not rested on and becomes damaged
   • If the crankshaft is being replaced, then the bearing shells must be reallocated to the bearing cap. Refer to MAIN BEARING SHELLS ALLOCATION .
   • Axial Clearance. Refer to CRANKSHAFT, MEASURING AXIAL CLEARANCE 
   • Radial Clearance. Refer to CRANKSHAFT, MEASURING RADIAL CLEARANCE .
   • Do not turn the crankshaft when measuring radial clearance
   • Crankshaft dimensions. Refer to CRANKSHAFT DIMENSIONS .
4. Bearing Shell for Bearing Cap
   • Without oil groove
   • Lubricate
   • Do not interchange used bearing shells (mark them)
   • Crankshaft bearing shells identification (classification). Refer to MAIN BEARING SHELLS ALLOCATION .
5. Bolt
   • Replace
   • Tightening sequence. Refer to Fig 2.
6. Bearing Cap
   • Bearing cap 1: belt pulley side
   • Retaining tabs for cylinder block/bearing cap bearing shells must lie above one another
7. Bolt
   • 10 Nm + 90° additional turn
   • Replace
   • Replace the sensor wheel every time the bolts are loosened. Refer to SENSOR WHEEL, REMOVING AND INSTALLING .
8. Sensor Wheel
   • For the Engine Speed Sensor -G28-
   • It is possible to install in one position only, the holes are offset.
   • Replace the sensor wheel every time the bolts are loosened
   • Removing and Installing. Refer to SENSOR WHEEL, REMOVING AND INSTALLING .
9. Thrust Washers
   • For bearing 3
   • Lubricate
10. Bolt
    • Replace
    • Tightening sequence. Refer to Fig 2.

Crankshaft - Tightening Sequence

Fig 2: Bearing Caps Tightening Sequence

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Install the bolts -1 through 10- and -arrows A- hand-tight.

-- Pretighten the bolts -1 through 10- to 65 Nm.

-- Continue tightening the bolts -1 through 10- using a rigid wrench by 90°.

-- Tighten the bolts -arrows A- to 20 Nm.

-- Turn the bolts -arrows A- an additional 90° using a torque wrench.