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11 21 531 Replacing all crankshaft main bearings (N14)

WARNING: This page is about a different car, the 2008 MINI Cooper and 2007 MINI Cooper. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required: 

IMPORTANT: Modified assignment of bearings.

Bearing (1) is at the output end (clutch end)

Determine main bearing colours; the designations on the crankcase and crankshaft are always required and can only determined using the table.

Necessary preliminary tasks: 

Installation: 

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

Bearing shell (2) without lubricant groove must be fitted in crankcase lower section (bedplate).

Fig 1: Bearing Shells With And Without Lubricant Groove
G04751107Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Modified assignment of bearings.

Bearing (1) is at the output end (clutch end)

Bearings (1 to 5).

Bearing (2) is a guide bearing.

IMPORTANT: Clean sealing surfaces.

Do not  clean sealing faces with a metal-cutting tool.

Clean sealing faces with special tool 11 4 470  only.

Fig 2: Upper Crankcase Bearing Designations
G04796207Courtesy of BMW OF NORTH AMERICA, INC.

Insert guide rings (1) in crankcase at bearing block (2) with groove facing outwards.

If necessary, attach with engine oil to crankcase.

Fig 3: Guide Rings And Installation Position
G04789742Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Modified assignment of bearings.

Bearing (1) is at the output end (clutch end)

Bearings (1 to 5).

IMPORTANT: Clean sealing surfaces.

Do not  clean sealing faces with a metal-cutting tool.

Clean sealing faces with special tool 11 4 470  only.

Fig 4: Lower Crankcase Bearing Designations
G04796209Courtesy of BMW OF NORTH AMERICA, INC.

Bearing classification on crankcase upper half: 

Bearing allocation 1-5: the designations on the crankcase and crankshaft are always required.

Refer to COLOR CODE CHART  for the color code.

Example: 

Bearing 1. Letter P

Bearing 2. Letter K

Bearing 3. Letter I

Bearing 4. Letter N

Bearing 5. Letter N

Fig 5: Bearing Identification Marks
G04796210Courtesy of BMW OF NORTH AMERICA, INC.

Bearing classification on crankcase upper half: 

Bearing allocation 1-5: the designations on the crankcase and crankshaft are always required. 

Refer to BEARING COLOR CODE CHART: UPPER HALF  for the color code.

Example: 

Bearing 1. Letter T

Bearing 2. Letter Q

Bearing 3. Letter Q

Bearing 4. Letter R

Bearing 5. Letter R

Fig 6: Bearing Color Code
G04796211Courtesy of BMW OF NORTH AMERICA, INC.
BEARING COLOR CODE CHART: UPPER HALF

Table overview of bearing classification: upper half
Identifying letter of crankshaft
Bearings 1-5 A B C D E G H I K M N P Q R S T U
Crankcase A  Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw Sw Bl Bl Bl Bl
B  Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw Sw Bl Bl Bl
C  Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw Sw Bl Bl
D  Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw Sw Bl
E  Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw Sw
G  Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw
H  Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw
I  Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw
K  Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw
M  Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw
N  Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw
P  Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw
Q  Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr
R  Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr
S  Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr
T  Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr
U  Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr
X  Or Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr
Y  Or Or Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr
Z  Or Or Or Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr

Crankshaft bearing colours:

BL= Blue.

SW= Black.

Gr= Green.

Ge Yellow.

Or Orange.

Bearing classification on crankcase lower half: 

Bearing allocation 1-5: the designations on the crankcase and crankshaft are always required.

Refer to BEARING COLOR CODE CHART: LOWER HALF  for the color code.

Example: 

Bearing 1. Letter P

Bearing 2. Letter K

Bearing 3. Letter I

Bearing 4. Letter N

Bearing 5. Letter N

Fig 7: Bearing Identification Marks
G04796210Courtesy of BMW OF NORTH AMERICA, INC.

Bearing classification on crankcase lower half: 

Bearing allocation 1-5: the designations on the crankcase and crankshaft are always required.

Refer to BEARING COLOR CODE CHART: LOWER HALF  for the color code.

Example: 

Bearing 1. Letter T

Bearing 2. Letter Q

Bearing 3. Letter Q

Bearing 4. Letter R

Bearing 5. Letter R

Fig 8: Bearing Color Code
G04796211Courtesy of BMW OF NORTH AMERICA, INC.
BEARING COLOR CODE CHART: LOWER HALF

Table overview of bearing classification: lower half
Crankshaft
Bearings 1-5 A B C D E G H I K M N P Q R S T U
Crankcase  A  Gr Sw Sw Sw Sw Sw Sw Sw Sw Bl Bl Bl Bl Bl Bl Bl Bl
B  Gr Gr Sw Sw Sw Sw Sw Sw Sw Sw Bl Bl Bl Bl Bl Bl Bl
C  Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw Sw Bl Bl Bl Bl Bl Bl
D  Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw Sw Bl Bl Bl Bl Bl
E  Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw Sw Bl Bl Bl Bl
G  Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw Sw Bl Bl Bl
H  Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw Sw Bl Bl
I  Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw Sw Bl
K  Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw Sw
M  Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw
N  Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw
P  Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw
Q  Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw
R  Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw
S  Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw
T  Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw
U  Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr
X  Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr
Y  Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr
Z  Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr

Crankshaft bearing colours:

BL= Blue.

SW= Black.

Gr= Green.

Ge Yellow.

Or Orange.

Example: Crankcase upper half: 

Combining the dots of the designations of the crankshaft and crankcase produces the following color combinations.

Bearing 1: The letters (P and T) produce in the crankcase upper half the color Ge= Yellow with lubricant groove.

Bearing 2: K and Q= Ge= Yellow.

Bearing 3: I and Q= Ge= Yellow.

Bearing 4: N and R= Gr= Green.

Bearing 5: N and R= Gr= Green.

Fig 9: Upper Crankcase Bearing Designations
G04796207Courtesy of BMW OF NORTH AMERICA, INC.

Example: Crankcase lower half: 

Combining the dots of the designations of the crankcase and crankshaft produces the following color combinations.

Bearing 1: The letters P. and T. produce in the crankcase lower half the color Gr= Green without lubricant groove.

Bearing 2: K and Q= Gr= Green.

Bearing 3: I and Q= Gr= Green.

Bearing 4: N and R= Gr= Green.

Bearing 5: N and R= Gr= Green.

Fig 10: Lower Crankcase Bearing Designations
G04796209Courtesy of BMW OF NORTH AMERICA, INC.

Check spray nozzle (2) for damage, replace if necessary.

Release screw (1).

For tightening torque refer to 11 11 8AZ  in 11 11 ENGINE BLOCK .

Remove oil spray nozzle (2).

Installation: 

Oil spray nozzle (2) is turned when screw (1) is tightened and then rests with its upper corner against crankcase.

Fig 11: Oil Spray Nozzle And Screw
G04789750Courtesy of BMW OF NORTH AMERICA, INC.

Install Crankcase Lower Section   .

Assemble engine.

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