Overview - Crankshaft

Fig 1: Crankshaft Assembly Overview

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

1. Cylinder Block
2. Bearing Shell for Cylinder Block
   • With lubricating groove
   • Lubricate
   • Do not interchange used bearing shells (mark)
   • Crankshaft bearing shells identification (classification), refer to MAIN BEARING SHELLS ALLOCATION .
3. Crankshaft
   • After removal, lay aside so that sensor wheel -item  8, is not rested on and becomes damaged
   • If the crankshaft is being replaced, then the bearing shells must be allocated to the bearing cover, 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 crankshaft when measuring radial play
   • Crankshaft Dimensions, refer to CRANKSHAFT DIMENSIONS .
4. Bearing Shell for Bearing Cap
   • Without lubricating groove
   • Lubricate
   • Do not interchange used bearing shells (mark)
   • Crankshaft bearing shells identification (classification), refer to MAIN BEARING SHELLS ALLOCATION .
5. Bolt
   • Replace after removing
   • Tightening sequence, refer to Fig 2
6. Bearing Cap
   • Bearing cap 1: Belt pulley side
   • Retaining tabs of bearing shells and cylinder block/bearing caps must lie above one another
7. Bolt
   • 10 Nm + 90°
   • Replace after removing
   • Replace sensor wheel every time bolts are loosened, refer to SENSOR WHEEL .
8. Sensor Wheel
   • For Engine Speed Sensor -G28-
   • Only possible to install in one position - Bores are offset
   • Replace sensor wheel every time bolts are loosened
   • Removing and installing, refer to SENSOR WHEEL .
9. Thrust Washers
   • For bearing 3
   • Lubricate
10. Bolt
    • Replace after removing
    • Tightening sequence, refer to Fig 2

Fig 2: Crankshaft Tightening Sequence

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Tighten the crankshaft bolts in five stages, and in the sequence -1- through -10- and -arrows A- as follows.