Overview - Crankshaft

WARNING: This page is about a different car, the 2016 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

For assembly work, secure the engine on the Engine And Transmission Holder :VAS6095 . Refer to ENGINE, SECURING ON ENGINE AND TRANSMISSION HOLDER .

Fig 1: Crankshaft Exploded View

Courtesy of AUDI OF AMERICA, LLC

Crankshaft
- Axial play, measuring. Refer to CRANKSHAFT, MEASURING AXIAL CLEARANCE .
- Radial play, measuring. Refer to CRANKSHAFT, MEASURING RADIAL CLEARANCE .
- Crankshaft dimensions. Refer to CRANKSHAFT DIMENSIONS .
Alignment Sleeve
- Quantity: 4
- Insert in cylinder block
Guide Frame
Bolt
- Tightening specification and sequence. Refer to appropriate service information. .
- Always replace
- Use old bolts to measure radial play.
Thrust Washer
- Only at 3rd crankshaft bearing
- Installed position: the oil grooves face outward.
- Pay attention to the locating point
Bearing Shell
- Replace any worn bearing shells
- For guide frame without lubricating groove
- Insert new bearing shells for guide frame with proper color marking. Refer to
Alignment Pin
- Make sure the crankshaft fits correctly
Thrust Washer
- Only at 3rd crankshaft bearing
- Installed position: the oil grooves face outward.
Bearing Shell
- For cylinder block with oil groove
- Replace any worn bearing shells
- Insert new bearing shells for cylinder block with proper color marking.

Courtesy of AUDI OF AMERICA, LLC

NOTE:

Replace the bolts that were tightened with an additional turn.

-- Install both dowel sleeves into the cylinder block.

-- Tighten the bolts in three steps and in the sequence shown:

Step	Bolts	Tightening Specification/Additional Turn
1.	-1 to 16-	30 Nm
2.	-1 to 16-	50 Nm
3.	-1 to 16-	180° additional turn

Courtesy of AUDI OF AMERICA, LLC

Bearing shells with the correct thickness are allocated to the cylinder block in the factory. Colored dots on bearing shells serve for identifying bearing shell thickness.

-Arrow- : belt pulley side.

Allocation of bearing shells to cylinder block is identified with a letter by each bearing.

Letter on Cylinder Block	Color of Bearing
R	=	Red
G	=	Yellow
B	=	Blue

Courtesy of AUDI OF AMERICA, LLC

Bearing shells with the correct thickness are allocated to the guide frame in the factory. Colored dots on sides of bearing shells serve for identifying bearing shell thickness.

Allocation of bearing shells to guide frame is marked on flywheel flange of crankshaft by a row of letters. The first letter of the row of letters represents bearing "1", the second letter is for bearing "2", etc.

Letter on Crankshaft	Color of Bearing
R	=	Red
G	=	Yellow
B	=	Blue

Courtesy of AUDI OF AMERICA, LLC

-- Check if alignment bushings -1 through 4- are inserted at each of the locations in the guide frame as shown in the illustration.

-Arrow- : belt pulley side.