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Application of Crankshaft Bearing Shells for Cylinder Block Audi A4 B6

Mechanical 3 illustrations ~201 words

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

Scheme 175

Scheme 175: Application of crankshaft bearing shells for cylinder block

Note. The arrow points to the belt pulley side.

Application of bearing shells to cylinder block is marked by a letter beside the respective bearing.

Letter at Cylinder blockColor of bearing
GYellow
BBlue
SBlack

CRANKSHAFT MAIN BEARING COLOR CHART: CYLINDER BLOCK

Scheme 176

Scheme 176: Application Of Crankshaft Bearing Shells For Bearing Caps

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

Application of bearing shells to crankshaft is marked with a letter sequence at the crankshaft flank. The first digit, `1" (arrow) identifies the color coding for bearing 1.

Letter to crankshaftColor of bearing
GYellow
BBlue
SBlack

CRANKSHAFT MAIN BEARING COLOR CHART: BEARING CAP

Scheme 177

Scheme 177: Installing Crankshaft Bearing Cap
  1. Replace bolts A and nuts -1- to -8-.
  2. Inserting alignment bushings into cylinder block
  3. Tighten bearing cap nuts or bolts in the following sequence: Screw in bolts -A- hand tight. Tighten nuts -1- to -8- to 35 Nm. Tighten nuts -1- to -8- 90° (1/4 turn) further using rigid wrench. tighten bolts -A- to 20 Nm. Tighten bolts -A- 90° (1/4 turn) further using rigid wrench.