Replacing all connecting rod bearing shells (S55 engine)

Special tools required:

IMPORTANT: Modified procedure:
All crank pins are connected with the crankshaft.

Necessary preliminary tasks:

IMPORTANT: All crankshaft crank pins are classified.
The identification (2) is located on the first crank web.

Optional classifications (2) per connecting rod

On the connecting rod and connecting rod bearing cap:

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r. Connecting rod = Yellow.

Connecting rod bearing cap = Red.

b. Connecting rod = Violet.

Connecting rod bearing cap = Blue

Example:

Possible classification: b r b b r r

Cylinder 1: Classification b

Violet (connecting rod)/Blue (connecting rod bearing cap)

Cylinder 2: Classification r

Yellow (connecting rod)/Red (connecting rod bearing cap)

Cylinder 3: Classification b

Violet (connecting rod)/Blue (connecting rod bearing cap)

Cylinder 4: Classification r

Violet (connecting rod)/Blue (connecting rod bearing cap)

Cylinder 5: Classification r

Yellow (connecting rod)/Red (connecting rod bearing cap)

Cylinder 6: Classification r

Yellow (connecting rod)/Red (connecting rod bearing cap)

Release connecting rod bolts (1).

Remove connecting rod bearing cap (2).

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IMPORTANT: Risk of damage to cylinder wall and to crankshaft.

Gently release connecting rod from crankshaft.

Remove connecting rod bearing shells (1 and 2).

Use new connecting rod bearing shells according to code letter.

Installation note:

Pay attention to guide lugs during installation.

IMPORTANT: All crankshaft crank pins are classified.

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Tighten down connecting rod bolts (1) with special tool 00 9 120.

Tightening torque 11 24 1AZ .

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Assemble engine.