BMW X5 Owners & Service Manuals

BMW X5: Connecting Rod With Bearing


Special tools required:

IMPORTANT: All crank pins are connected with the crankshaft.

Modified procedure: The colors of the connecting rod bearing shells are the same at the top and bottom.

The Blue / Red connecting rod bearing shell colors are no longer fitted in combination.

Necessary preliminary tasks:

IMPORTANT: All crankshaft crank pins are classified.

Possible classifications per connecting rod at top and bottom:

r: Red

b: Blue

Only one color may be fitted per big end bearing cap and connecting rod.

In direction of arrow from (1 to 2) crank pin (1 to 6).


Possible classification: rbbrrb

Connecting Rod With Bearing
Fig. 116: Connecting Rod Classifications

Cylinder Classification Red / Red

  1. Cylinder Classification Blue / Blue
  2. Cylinder Classification Blue / Blue
  3. Cylinder Classification Red / Red
  4. Cylinder Classification Red / Red
  5. Cylinder Classification Blue / Blue

Release conrod bolts (1).

Remove connecting rod bearing cap (2).

Connecting Rod With Bearing
Fig. 117: Conrod Bolts And Connecting Rod Bearing Cap

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

Gently release connecting rod from crankshaft.

Remove connecting rod bearing shells (1 and 2).

Install new conrod bearing shells.


Pay attention to guide lugs during installation.

IMPORTANT: All crankshaft crank pins are classified.

Connecting Rod With Bearing
Fig. 118: Connecting Rod Bearing Shells

In each case insert only one color of connecting rod bearing shell (1 and 2) for each connecting rod.

Check conrod bearing clearance.

Piston in BDC position.

To determine the connecting rod bearing play, make sure that the bearing points are clean and free from oil and grease.

Fit special tool 00 2 590 (Plastigage Type PG 1) to the oil-free crankshaft.

Fit conrod bearing cap so that pairing letters match up.

Connecting Rod With Bearing
Fig. 119: Locating Conrod Bearing Clearance

IMPORTANT: Do not distort conrods or crankshaft.

Use the old conrod bolts to check conrod clearance.

Tighten down conrod bolts with special tool 00 9 120.

Tightening torque: 11 24 1AZ.

Connecting Rod With Bearing
Fig. 120: Special Tool (00 9 120)

Unscrew conrod bearing cover. Read off conrod bearing play at width of flattened plastic thread on measurement scale.

Conrod bearing clearance.

Tightening torque: 11 24 1AZ.

Connecting Rod With Bearing
Fig. 121: Reading Conrod Bearing Play At Width Of Flattened Plastic Thread On Measurement Scale

Assemble engine.


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