Replacing all crankshaft main bearing shells (S63T2) (X5 M)

Special tools required:

00 2 590
00 9 120
11 6 251
11 6 252

CAUTION: Danger of injury from sharp edge of housing.

CAUTION: New bearing shell classification.

The letters on the crankcase and crankshaft denote the bearing shell classification for the relevant bearing position from 1 to 5 (main bearing cap).

The letters from the crankcase and crankshaft are required to determine the bearing shell colors.

The first letter on the left applies to the first bearing position at the front on the timing chain drive.

The bearing seat (3) is designed as guide bearing.

Necessary preliminary work

Remove CRANKSHAFT .

NOTE: Main bearing caps 1 to 5 are marked with punched numbers.

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CAUTION: New bearing shell classification.

The letters on the crankcase denote the bearing shell classification for the relevant bearing position from 1 to 5 on the crankcase.

The first letter on the left applies to the first bearing position at the front on the timing chain drive.

Color assignment on crankshaft 1 to 5

Number (3) is a guide bearing.

The letters on the crankshaft denote the bearing shell classification for the relevant bearing position from 1 to 5 in the main bearing cap.

The first letter on the left applies to the first bearing position at the front on the timing chain drive.

Color assignment on crankshaft 1 to 5

Number (3) is a guide bearing.

Courtesy of BMW OF NORTH AMERICA, INC.

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CAUTION: Bearing position 1, 2, _, 4 and 5
The letters from the crankcase and crankshaft are required to determine the bearing shell colors

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COLOR OF THRUST BEARING SHELLS 3

Crankcase	A	B	C	D	E	G	H	I	K	M	N	P	Q	R	S	T	U	W	X	Z
	Yellow	Yellow	Yellow	Yellow	Yellow	Yellow	Yellow	Green	Green	Green	Green	Green	Green	Green	Violet	Violet	Violet	Violet	Violet	Violet

Crankshaft bearing cap	A	B	C	D	E	G	H	I	K	M	N	P	Q	R	S	T	U	W	X	Z
Crankshaft bearing cap	Yellow	Yellow	Yellow	Yellow	Yellow	Yellow	Yellow	Green	Green	Green	Green	Green	Green	Green	Violet	Violet	Violet	Violet	Violet	Violet

Color table of bearing shells 1, 2, _, 4 and 5:

Crankcase
Crankshaft		A	B	C	D	E	G	H	I	K	M	N	P	Q	R	S	T	U	W	X	Z
	Z	1 0	1 0	1 0	1 0	1 0	1 0	1 0	1 1	1 1	1 1	1 1	1 1	1 1	1 1	2 1	2 1	2 1	2 1	2 1	2 1
	X	1 0	1 0	1 0	1 0	1 0	1 0	1 0	1 1	1 1	1 1	1 1	1 1	1 1	1 1	2 1	2 1	2 1	2 1	2 1	2 1
	W	1 0	1 0	1 0	1 0	1 0	1 0	1 0	1 1	1 1	1 1	1 1	1 1	1 1	1 1	2 1	2 1	2 1	2 1	2 1	2 1
	U	1 0	1 0	1 0	1 0	1 0	1 0	1 0	1 1	1 1	1 1	1 1	1 1	1 1	1 1	2 1	2 1	2 1	2 1	2 1	2 1
	T	1 0	1 0	1 0	1 0	1 0	1 0	1 0	1 1	1 1	1 1	1 1	1 1	1 1	1 1	2 1	2 1	2 1	2 1	2 1	2 1
	S	1 0	1 0	1 0	1 0	1 0	1 0	1 0	1 1	1 1	1 1	1 1	1 1	1 1	1 1	2 1	2 1	2 1	2 1	2 1	2 1
	R	0 0	0 0	0 0	0 0	0 0	0 0	0 0	0 1	0 1	0 1	0 1	0 1	0 1	0 1	1 1	1 1	1 1	1 1	1 1	1 1
	Q	0 0	0 0	0 0	0 0	0 0	0 0	0 0	0 1	0 1	0 1	0 1	0 1	0 1	0 1	1 1	1 1	1 1	1 1	1 1	1 1
	P	0 0	0 0	0 0	0 0	0 0	0 0	0 0	0 1	0 1	0 1	0 1	0 1	0 1	0 1	1 1	1 1	1 1	1 1	1 1	1 1
	N	0 0	0 0	0 0	0 0	0 0	0 0	0 0	0 1	0 1	0 1	0 1	0 1	0 1	0 1	1 1	1 1	1 1	1 1	1 1	1 1
	M	0 0	0 0	0 0	0 0	0 0	0 0	0 0	0 1	0 1	0 1	0 1	0 1	0 1	0 1	1 1	1 1	1 1	1 1	1 1	1 1
	K	0 0	0 0	0 0	0 0	0 0	0 0	0 0	0 1	0 1	0 1	0 1	0 1	0 1	0 1	1 1	1 1	1 1	1 1	1 1	1 1
	I	0 0	0 0	0 0	0 0	0 0	0 0	0 0	0 1	0 1	0 1	0 1	0 1	0 1	0 1	1 1	1 1	1 1	1 1	1 1	1 1
	H	3 3	3 3	3 3	3 3	3 3	3 3	3 3	0 0	0 0	0 0	0 0	0 0	0 0	0 0	1 0	1 0	1 0	1 0	1 0	1 0
	G	3 3	3 3	3 3	3 3	3 3	3 3	3 3	0 0	0 0	0 0	0 0	0 0	0 0	0 0	1 0	1 0	1 0	1 0	1 0	1 0
	E	3 3	3 3	3 3	3 3	3 3	3 3	3 3	0 0	0 0	0 0	0 0	0 0	0 0	0 0	1 0	1 0	1 0	1 0	1 0	1 0
	D	3 3	3 3	3 3	3 3	3 3	3 3	3 3	0 0	0 0	0 0	0 0	0 0	0 0	0 0	1 0	1 0	1 0	1 0	1 0	1 0
	C	3 3	3 3	3 3	3 3	3 3	3 3	3 3	0 0	0 0	0 0	0 0	0 0	0 0	0 0	1 0	1 0	1 0	1 0	1 0	1 0
	B	3 3	3 3	3 3	3 3	3 3	3 3	3 3	0 0	0 0	0 0	0 0	0 0	0 0	0 0	1 0	1 0	1 0	1 0	1 0	1 0
	A	3 3	3 3	3 3	3 3	3 3	3 3	3 3	0 0	0 0	0 0	0 0	0 0	0 0	0 0	1 0	1 0	1 0	1 0	1 0	1 0

Number crankcase	Number crankshaft	Crankcase	Crankshaft/Bearing cap
0	0	red	red
0	1	white	red
1	0	red	white
1	1	white	white
2	1	black	white
3	3	cyan blue	cyan blue

Enter code letters from crankcase and crankshaft.

Bearing seat	Code letter - crankcase	Code letter - crankshaft	Number crankcase	Number crankshaft	Color of crankcase With lubricating groove	Color of bearing shell without lubricating groove
Bearing seat 1
Bearing seat 2
Bearing seat 3
Bearing seat 4
Bearing seat 5

NOTE: Install main bearing shells (1) with lubricating groove in crankcase.
Install main bearing shells (2) without lubricating groove in the main bearing caps.

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NOTE: Main bearing cap number 3 can be identified by the surfaces (1) for the thrust washers of the thrust bearing.

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CAUTION: Both code letters are required for the determination.

The letters on the crankcase denote the bearing shell classification for the relevant bearing position from 1 to 5 in the crankcase.

The first letter on the left applies to the first bearing position at the front on the timing chain drive.

Courtesy of BMW OF NORTH AMERICA, INC.

CAUTION: Both code letters are required for the determination.

The letters on the crankshaft denote the bearing shell classification for the relevant bearing position from 1 to 5 in the bearing cap.

The first letter on the left applies to the first bearing position at the front on the timing chain drive.

Example application:

Bearing number 1:

Crankcase code letter (Q)/ crankshaft code letter (Q)

Crankcase bearing shell 2 = white Bearing cap bearing shell 1 = red

Bearing number 2:

Crankcase letter code (H)/ crankshaft letter code (G)

Crankcase bearing shell 0 = blue Bearing cap bearing shell 0 = blue

Bearing number 3 (guide bearing):

Crankcase code letter (I)/ crankshaft code letter (N)

Crankcase bearing shell 1 = green Bearing cap bearing shell 1 = green

Bearing number 4:

Crankcase letter code (H)/ crankshaft letter code (E)

Crankcase bearing shell 0 = blue Bearing cap bearing shell 0 = blue

Bearing number 5:

Crankcase letter code (K)/ crankshaft letter code (M)

Crankcase bearing shell 2 = white Bearing cap bearing shell 1 = red

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Tighten down all collar bolts (M11) of main bearing caps in sequence 1 to 5 to joining torque.

Tightening torque 11 11 1AZ. .

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Tighten down all collar bolts (M11) of main bearing caps with special tool 00 9 120 with angle of rotation.

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NOTE: Always replace main bearing bolts in main bearing caps with new main bearing bolts.
Do not wash off bolt coating.

CAUTION: Risk of cracking!

Install crankshaft.

Carefully strike back and front of crankshaft with a plastic hammer to center guide bearing (do not damage crankshaft).

Secure special tool 11 6 252 with magnetic foot on crankcase.

Position special tool 11 6 251.

Tightening specifications for main bearing:

Check side clearance.

Check guide bearing shell, crankshaft and crankcase if necessary.

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Assemble engine.