Crankshaft Overview

Fig 1: Identifying Assembly Overview: Crankshaft

Courtesy of VOLKSWAGEN UNITED STATES, INC.

1. Cylinder Block 
   • If the cylinder block is being replaced, then the bearing shells must be allocated again. Refer to CRANKSHAFT BEARING SHELL, ALLOCATING .
2. Bearing Shell, for the Cylinder Block 
   • With a lubricating groove.
   • Do not interchange used bearing shells (mark them).
   • Crankshaft bearing shell, allocating. Refer to CRANKSHAFT BEARING SHELL, ALLOCATING .
3. Crankshaft 
   • After removal, place it in such a way it does not rest on the sensor wheel -item 8- and damage it
   • If the crankshaft is being replaced, then the bearing shells must be allocated to the bearing cap. Refer to CRANKSHAFT BEARING SHELL, ALLOCATING .
   • Axial clearance measuring, refer to CRANKSHAFT AXIAL PLAY, MEASURING .
   • Radial clearance measuring, refer to CRANKSHAFT RADIAL PLAY, MEASURING .
   • Do not rotate the crankshaft when measuring the radial play.
   • Crankshaft dimensions, refer to CRANKSHAFT DIMENSIONS .
   • Removing and installing, refer to SENSOR WHEEL .
4. Bearing Shell 
   • Without a lubricating groove.
   • Do not interchange used bearing shells (mark them).
   • Crankshaft bearing shell, allocating. Refer to CRANKSHAFT BEARING SHELL, ALLOCATING .
5. Bolt 
   • Always replace.
   • Observe the tightening sequence, refer to Fig 2.
6. Bearing Cap 
   • Bearing cap 1: Belt pulley side.
   • Retaining tabs on the bearing shells and cylinder block/bearing caps must align above one another.
7. Screw 
   • 10 Nm + an additional 90° (1/4) turn.
   • Always replace.
   • Replace the sensor wheel every time the bolts are loosened. Refer to SENSOR WHEEL .
8. Sensor Wheel 
   • For the engine speed sensor -G28-.
   • Only possible to install in one position - Bores are offset.
   • Replace the sensor wheel every time the bolts -item 7- are loosened.
   • Removing and installing, refer to SENSOR WHEEL .
9. Thrust washers 
   • For bearing 3.
10. Bolt 
    • Always replace.
    • Observe the tightening sequence, refer to Fig 2.

Fig 2: Identifying Crankshaft Bearing Cap, Installing

Courtesy of VOLKSWAGEN UNITED STATES, INC.

-- Tighten the crankshaft bearing cap bolts in sequence -1 through 5- :

1. Tighten the bolts -1 through 10- and the -arrows- by hand.
2. Tighten the bolts -1 through 10- to 65 Nm.
3. Tighten the bolts -1 through 10- an additional 90° (1/4) turn using a ratchet.
4. Tighten the bolts -arrows- to 20 Nm.
5. Tighten the bolts -arrows- an additional 90° (1/4) turn using a ratchet.