bmw Workshop Repair Guides

BMW Workshop Service and Repair Manuals

1 RA Replacing Crankshaft - Crankshaft Removed (M50)|Page 351 > < 1 RA Replacing Crankshaft - Crankshaft Removed (M50)|Page 349
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Install crankshaft.

Place Plastigage (TYPE PG-1) - source of supply: Cartool - on
crankshaft wiped clean of oil and tighten bearing covers as
specified,

refer to Technical Data

Do not turn crankshaft.

Remove bearing covers and read bearing clearance,

refer to Technical Data,

according to width of the flattened Plastigage with help of the
supplied scale.

Install new bearing shells, bearing shells of different machined
size or bearing shells with a different colour code to correct
bearing play.

Overview of colour code/shaft diameter/bearing-shell thickness,
refer to Technical Data

Triple-classification colour codes:

Ge Yellow

Gn Green

Ws White

1. 

Crankshaft

2. 

Bearing play

3. 

Bearing-shell thickness

4. 

Journal diameter

Replacing conrod bearing shells:

Red or blue conrod bearing shells are installed as standard
depending on the paint mark on the connecting rod for a relevant
crankshaft grinding size.

Install only red bearing shells of the relevant grinding size for
replacement crankshafts.

RA  Replacing crankshaft - crankshaft removed (M50)

BMW AG - TIS

21.01.2013  06:48

Issue status (12/2007) Valid only until next DVD is issued

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1 RA Replacing Crankshaft - Crankshaft Removed (M50)|Page 351 > < 1 RA Replacing Crankshaft - Crankshaft Removed (M50)|Page 349