Replace lower crankshaft guide bearing shells (B48) (John Cooper Works)

There must be no oil in the blind holes (risk of cracking)  .

Do not wash off screw coating.

Incorrect assembly of the bearing caps will result in damage to the crankcase.

Installation note: 

Bearing shell (1) with lubricating groove must be fitted in upper section of crankcase.

Bearing shell (2) without lubricating groove must be installed in lower part of crankcase.

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Preliminary work needed: 

• Remove OIL SUMP .

Unscrew all bolts.

Remove reinforcement (1).

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Loosen main bearing bolts 1 and 2 from main bearing cap (3).

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Remove standard main bearing shell (1) without lubricating groove from the bearing cap (see arrows).

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Insert new guide bearing shell (1) without lubricating groove in arrow direction.

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Insert thrust bearing lid (1) with a new guide bearing shell (2) precisely into the bearing cap (see arrows).

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Join main bearing cap (3).

Screw in the main bearing bolts (1 and 2).

Tightening torque: 11 11 1AZ .

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Parts:  Replace screws.

Install reinforcement (1).

Tighten down all screws.

Tightening torque: 11 41 3AZ .

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Required follow-up work: 

Assemble engine.