Crankshaft, Component Overview

Crankshaft, component overview

Note:
^ To perform assembly work, secure engine with Holder for V8 Engine Audi S4, allroad quattro VAS 609511-6 or Holder for V8 Engine Audi S4, allroad quattro VAS 6095/16A to Engine and Transmission Holder VAS 6095.





1 - Seals
^ Replace

2 - Seal for crankshaft - ribbed belt side

3 - Alignment bushing
^ 3 pieces
^ Insert into guide frame
^ Installed location

4 - Screws
^ For guide frame
^ Replace
^ Different bolt sizes
^ Tightening order

5 - Bolt
^ For sealing surfaces of cylinder block/guide frame
^ Different bolt lengths
^ Tightening order

6 - Bearing bracket
^ Sealant applied on cylinder block (for guide frame)
^ Tightening sequence for manifold mounting bolts

7 - Thrust washer
^ Only at 4th crankshaft bearing
^ Lubricating grooves face outward
^ Note locating point in guide frame

8 - Bearing shell
^ For guide frame without lubricating groove
^ Do not interchange used bearing shells (mark)
^ Insert new bearing shells for guide frame with proper color marking

9 - Crankshaft
^ Do not turn crankshaft when measuring radial play

10 - Thrust washer
^ Only at 4th crankshaft bearing
^ Lubricating grooves face outward

11 - Bearing shell
^ For cylinder block with oil groove
^ Do not interchange used bearing shells (mark)
^ Insert new bearing shells for cylinder block with proper color marking

12 - Gasket
^ Replace

13 - Cylinder block
^ Sealant applied on cylinder block (for guide frame)





Sealant applied on cylinder block (for guide frame)
- Clean sealing surfaces, they must be free of oil and grease.
- Apply sealant beads - arrows - on clean sealing surfaces of guide frame as shown in illustration.

^ Thickness of sealant beads: 1.5 to 2.0 mm.

- Install seals - 1 to 3 -.





Installation position of alignment bushings
- Check whether alignment bushings - arrows - are inserted at locations in guide frame as shown in the illustration.





Installing guide frame
- Replace bolts - 1 to 20 -.
- Tighten bolts for guide frame as follows:
- Tighten bolts - 1 to 10 - to 30 Nm with torque wrench.
- Tighten bolts - 11 to 20 - to 20 Nm with torque wrench.
- Tighten bolts - 1 to 10 - to 50 Nm with torque wrench.
- Tighten bolts - 11 to 20 - to 30 Nm with torque wrench.
- Tighten bolts - 1 to 10 - 90° (1/4 additional turn) using a rigid wrench.
- Tighten bolts - 11 to 20 - 90° (1/4 additional turn) using a rigid wrench.
- Tighten bolts for sealing surfaces of cylinder block/guide frame - dark hatching in the illustration - to 9 Nm in diagonal sequence.