Crankshaft, Removing and Installing

Crankshaft, removing and installing

Notes:
^ Before removing crankshaft, provide suitable support to ensure that sensor wheel (6) is not damaged.
^ When working on engine, secure it to engine stand using engine bracket VW 540, Refer to Engine, Service and Repair

1. Bearing shells 1, 2, 4 and 5
^ For bearing cap without oil groove
^ For cylinder block with oil groove
^ Do not interchange used bearing shells (mark)
2. 65 Nm + 1/4 turn (90°) further
^ Replace
^ When measuring radial clearance of crankshaft, tighten to 65 Nm but do not turn further
3. Bearing caps
^ Bearing cap 1: pulley end
^ Bearing shell retaining lugs of cylinder block/bearing cap must be on same side
4. Bearing shell 3 (top)
^ For bearing cap without oil groove
^ For cylinder block with oil groove
^ Do not interchange used bearing shells (mark)
5. Thrust washers
^ For bearing cap, bearing 3
^ Note fixing arrangement
6. Sensor wheel
^ For engine speed sensor -G28
^ Can only be installed in one position -holes are off-set
^ Always replace sensor wheel if bolts have been removed
^ Removing and installing 13-62
7. 10 Nm + 1/4 turn (90°) further
^ Replace
^ Always replace sensor wheel if bolts have been removed
8. Pilot needle bearing
^ Pulling out and driving in, Refer to Pilot Needle Bearing, Extracting and Driving In Crankshaft
9. Crankshaft
^ Axial clearance, new: 0.07 - 0.23 mm Wear limit: 0.30 mm
^ Check radial clearance with Plastigage
^ New: 0.02 - 0.04 mm
^ Wear limit: 0.15 mm
^ Do not rotate crankshaft when checking radial clearance
^ Crankshaft dimensions, Refer to Crankshaft, Engine, Specifications
10. Bearing shell 3 (bottom)
^ For bearing cap without oil groove
^ For cylinder block with oil groove
^ Do not interchange used bearing shells (mark)
11. Chain sprocket
^ Drive for oil pump
^ Replacing, Refer to Oil Pump, Engine, Service and Repair






Fig. 1 Removing and installing sensor wheel
^ Always replace sensor wheel -2- if bolts -1- have been removed.

Notes:
^ If the securing bolts are tightened a second time, seats for countersunk bolt heads in sensor wheel will be distorted to such an extent that bolt heads will come into direct contact with crankshaft -3- -arrows- and sensor wheel will only fit loosely under bolts.
^ It is only possible to install sensor wheel in one position, mounting holes are offset.





Tightening torque
1) Replace bolts
2) 90° is a quarter turn





Fig. 2 Identification of top crankshaft bearing
^ Top crankshaft bearing shells are graded at factory and identified on cylinder block as shown in illustration.