Crankshaft: Service and Repair

Crankshaft, removing and installing
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
^ To measure radial clearance, tighten to 65 Nm but not further
3. Bearing cap
^ Bearing cap 1 - Belt pulley end
^ Bearing cap 3 with recesses for thrust washers
^ Bearing shell retaining lugs in cylinder block and bearing caps must align
4. Bearing shell 3
^ For bearing cap without oil groove.
^ For cylinder block with oil groove.
5. Thrust washer
^ For bearing cap 3
^ Note securing arrangement
^ Replace if damaged
7. 10 Nm + 1/4 turn (90°) further
^ Replace
8. Dowel pin
9. Crankshaft
^ Axial clearance, new: 0.07 ... 0.17 mm; wear limit 0.37 mm
^ Check radial clearance with Plastigage, new-0.03 ... 0.08 mm; wear limit-0.17 mm
^ Do not rotate crankshaft when checking radial clearance
10. Thrust washer
^ For cylinder block, bearing 3





Checking dowel pin projection out of crankshaft
Special tools, testers and auxiliary items required
- Depth gauge





Work sequence
- Use depth gauge to check projection - a - of dowel pin with sender wheel - 1 - removed.
1. Sender wheel
2. Securing bolt





3. Projection of dowel pin - 3 - out of crankshaft a = 2.5 ...3.0 mm

Removing and installing sender wheel
- Replace sender wheel - 2 - each time bolts - 1 - are loosened. Tightening torque- 10 Nm + 90° 1/4 turn) further

Note: The second time the bolts are tightened, the contact point of the countersunk head, in the sender wheel, is deformed sufficiently to allow the bolt head to seat arrows - on the crankshaft - 3 -, thus allowing the sender wheel to remain loose under the bolts.