11 24 571 Replace All Connecting Rod Bearings (N63O1)

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Special Tools Required:

00 2 590 .
00 9 120 .

IMPORTANT: Note GRINDING STAGES On Crankshaft.

Necessary Preliminary Tasks:

Remove All PISTONS .

Install New Connecting Rod Bearing Shells.

Install One Blue Bearing Shell (1) and One Red Bearing Shell (2) In Each Connecting Rod.

Graphic Shows Engine N63.

Fig 1: Identifying Blue Bearing Shell and Red Bearing Shell

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Installation Note:

The Bearing Shells On The Connecting Rod Are Coded.

Connecting Rod Bearing Cap (1): The Red Bearing Shell Is Engaged and The Fastening Notches Are On The Left and Right Sides of The Bearing Shell (See Arrows In Illustration).

Connecting Rod (2): The Blue Bearing Shell Is Fitted and The Fastening Notches Are One Side of The Bearing Shell (See Arrows In Illustration).

Fig 2: Identifying Correct Fitting of Bearing Shells

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IMPORTANT: New Connecting Rods Must Be Vacuum Cleaned Prior To Installation.
Do Not Use Compressed Air To Blow Off Cracked Areas.

Use A Commercially Available Vacuum Cleaner (2) To Vacuum Clean Cracked Areas (1).

Fig 3: Cleaning Cracked Areas Using Vacuum Cleaner

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Check Connecting-Rod Bearing Play.

Piston In BDC Position.

Fit Special Tool 00 2 590 (Plastigage Type Pg 1) To Oil-Free Crankshaft.

Fit Bearing Caps So That Matching Numbers Match Up.

Fig 4: Fitting Special Tool 00 2 590 (Plastigage Type Pg 1) To Oil-Free Crankshaft

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IMPORTANT: Do Not Turn Connecting Rod and Crankshaft (2).

Use Connecting Rod Bolts (1) To Check Connecting-Rod Bearing Play.

Secure Connecting Rod Bolts (1) with Special Tool 00 9 120 .

Tightening torque 11 24 1AZ .

Note The Pairing Letters (3).

Fig 5: Identifying Crankshaft, Connecting Rod Bolts, and Pairing Letters

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Remove Bearing Cap and Read Off Radial Clearance At Width of Crushed Plastigage with Assistance of Measuring Scale.

CONNECTING-ROD BEARING PLAY .

Remove Plastigage.
Lubricate Crankshaft and Bearing Shells.
Install New Connecting Rod Bolts.

Fig 6: Measuring Radial Clearance
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Secure Connecting Rod Bolts with Special Tool 00 9 120 .

Tightening torque 11 24 1AZ .

Graphic Shows Engine N63.

Fig 7: Tightening Connecting Rod Bolts Using Special Tool 00 9 120

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Assemble Engine.