Crankshaft Overview
Crankshaft Overview
• Before removing the crankshaft, prepare for appropriate storage, so that the sensor wheel => [ (Item 4) Sensor Wheel ] does not make contact or become damaged.
• The engine is to be secured to the engine and transmission holder (VAS 6095) when performing assembly work.
• On vehicles with a Direct Shift Gearbox (DSG(R)) , a needle bearing must be installed in the rear of the crankshaft.
1 Bolt
• 65 Nm + 90° (1/4) additional turn.
• Always replace.
• Fully threaded.
• Only tighten to 65 Nm to measure the radial play. Do not tighten to the additional torque.
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 Screw
• 10 Nm + 90° (1/4) additional turn.
• Always replace.
4 Sensor Wheel
• For the engine speed sensor.
• Replace the sensor wheel every time the screws are loosened.
• Only possible to install in one position - Bores are offset.
• Removing and installing, refer to => [ Sensor Wheel ] Service and Repair.
5 Crankshaft
• Axial play new: 0.07 to 0.23 mm wear limit: 0.30 mm.
• Check radial clearance using Plastigage 0.017 to 0.037 mm wear limit: 0.07 mm.
• Do not rotate the crankshaft when measuring the radial play.
• Crankshaft dimensions, refer to => [ Crankshaft Dimensions ] [1][2]Crankshaft, Engine.
• Removing and installing the needle bearing. Refer to => [ Crankshaft Needle Bearings ] Service and Repair.
6 Thrust Washers
• For bearing 3.
7 Bearing Shell, for the Cylinder Block
• With a lubricating groove.
• Identification for replacement part ordering, refer to => [ Upper Crankshaft Bearing Identification ] Service and Repair.
• Do not interchange used bearing shells (mark them).
8 Sprocket
• For the oil pump drive.
9 Bearing Shell, for the Bearing Cap
• Without a lubricating groove.
• Do not interchange used bearing shells (mark them).