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11 21 531 Replacing all crankshaft main bearings (N16)

WARNING: This page is about a different car, the 2016 MINI Cooper Paceman, 2015 MINI Cooper Paceman, 2014 MINI Cooper Paceman, and 2013 MINI Cooper. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required: 

IMPORTANT: Modified assignment of bearing positions.
Bearing position (1) is at the output end (clutch end)
Determine main bearing colors; the designations on the crankcase and crankshaft are always required and can only determined using the table.
A different bearing classification is necessary at bearing seat 5 on account of the central bolt on the timing chain drive.

Necessary preliminary tasks: 

Installation note: 

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: Identifying Bearing Shell With/Without Lubricant Groove
G04751107Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Modified assignment of bearing positions.
Bearing position (1) is at the output end (clutch end)

Bearings (1 to 5).

Bearing (2) is a guide bearing.

Fig 2: Identifying Bearings
G04796207Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Clean sealing surfaces.
Do not  clean sealing surfaces with a metal-cutting tool.

Clean sealing surfaces with special tool 11 4 470 .

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

If necessary, attach with engine oil to crankcase.

Fig 3: Identifying Guide Rings
G04789742Courtesy of BMW OF NORTH AMERICA, INC.

Bearing classification on crankcase upper and lower sections: 

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

Refer to the table 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 4: Identifying Bearing Classification On Crankcase Upper Half
G04796210Courtesy of BMW OF NORTH AMERICA, INC.

Bearing classification on crankcase upper and lower sections: 

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

Refer to the table 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 5: Identifying Bearing Classification Letters
G04796211Courtesy of BMW OF NORTH AMERICA, INC.

Example:  Crankshaft/crankcase.

Bearing (1):

Letter P  on the crankshaft and letter T  on the crankcase correspond to bearing color codes for the crankcase Or  = orange with lubricating groove.

Letter P  on the crankshaft and letter T  on the crankcase correspond to bearing color codes for the crankcase lower section (bedplate) Ge  = yellow without lubricating groove.

Bearing (2):

Letter K  on the crankshaft and letter Q  on the crankcase correspond to bearing color codes for the crankcase Or  = orange with lubricating groove.

Letter K  on the crankshaft and letter Q  on the crankcase correspond to bearing color codes for the crankcase lower section (bedplate) Or  = orange without lubricating groove.

Bearing (3):

Letter I  on the crankshaft and letter Q  on the crankcase correspond to bearing color codes for the crankcase Or  = orange with lubricating groove.

Letter I  on the crankshaft and letter Q  on the crankcase correspond to bearing color codes for the crankcase lower section (bedplate) Or  = orange without lubricating groove.

Bearing (4):

Letter N  on the crankshaft and letter R  on the crankcase correspond to bearing color codes for the crankcase Ge  = yellow without lubricating groove.

Letter N  on the crankshaft and letter R  on the crankcase correspond to bearing color codes for the crankcase lower section (bedplate) Ge  = yellow without lubricating groove.

Attention: See extra table. 

Bearing (5):

Letter N  on the crankshaft and letter R  on the crankcase correspond to bearing color codes for the crankcase Ge  = yellow with lubricating groove.

Letter N  on the crankshaft and letter R  on the crankcase correspond to bearing color codes for the crankcase lower section (bedplate) Gr  = green without lubricating groove.

Crankshaft bearing colors, bearing positions 1-4 

Sw = Black.

Gr = Green.

Ge = Yellow.

Or = Orange.

Br = Brown.

Table overview of bearing classification: Upper section, bearings 1 - 4
Crankshaft
Bearings 1-4 A  B  C  D  E  G  H  I  K  M  N  P  q  R  S  T  U 
Crankcase A  Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw
B  Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw
C  Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw
D  Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw
E  Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr
G  Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr
H  Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr
I  Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr
K  Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr
M  Or Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr
N  Or Or Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr
P  Or Or Or Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr
q  Br Or Or Or Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge
R  Br Br Or Or Or Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge
S  Br Br Br Or Or Or Or Or Or Or Or Ge Ge Ge Ge Ge Ge
T  Br Br Br Br Or Or Or Or Or Or Or Or Ge Ge Ge Ge Ge
U  Br Br Br Br Br Or Or Or Or Or Or Or Or Ge Ge Ge Ge
X  Br Br Br Br Br Br Or Or Or Or Or Or Or Or Ge Ge Ge
Y  Br Br Br Br Br Br Br Or Or Or Or Or Or Or Or Ge Ge
Z-Series  Br Br Br Br Br Br Br Br Or Or Or Or Or Or Or Or Ge
Table overview of bearing classification: Lower section, bearings 1 - 4
Crankshaft
Bearings 1-4 A  B  C  D  E  G  H  I  K  M  N  P  q  R  S  T  U 
Crankcase A  Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw Sw
B  Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw
C  Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw
D  Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw
E  Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw
G  Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw
H  Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw
I  Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw
K  Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr
M  Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr
N  Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr
P  Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr
q  Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr
R  Or Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr
S  Or Or Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr
T  Or Or Or Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr
U  Br Or Or Or Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge
X  Br Br Or Or Or Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge
Y  Br Br Br Or Or Or Or Or Or Or Or Ge Ge Ge Ge Ge Ge
Z-Series  Br Br Br Br Or Or Or Or Or Or Or Or Ge Ge Ge Ge Ge

Crankshaft bearing colors, bearing position 5: 

Sw = Black.

Gr = Green.

Ge = Yellow.

Or = Orange.

Br = Brown (only in crankcase upper section).

Table overview of bearing classification: Upper section, bearing 5
Crankshaft
Bearing 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 Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw Sw Sw
B  Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw Sw
C  Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw
D  Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw
E  Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw
G  Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw
H  Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw
I  Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw
K  Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw
M  Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr
N  Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr
P  Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr
q  Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr
R  Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr
S  Or Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr
T  Or Or Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr
U  Or Or Or Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr
X  Br Or Or Or Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge
Y  Br Br Or Or Or Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge
Z-Series  Br Br Br Or Or Or Or Or Or Or Or Ge Ge Ge Ge Ge Ge
Table overview of bearing classification: Lower section, bearing 5
Crankshaft
Bearing 5 A  B  C  D  E  G  H  I  K  M  N  P  q  R  S  T  U 
Crankcase A  Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw Sw Sw Sw Sw Sw Sw
B  Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw Sw Sw Sw Sw Sw
C  Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw Sw Sw Sw Sw
D  Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw Sw Sw Sw
E  Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw Sw Sw
G  Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw Sw
H  Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw Sw
I  Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw Sw
K  Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw Sw
M  Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw Sw
N  Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw Sw
P  Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw Sw
q  Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr Sw
R  Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr Gr
S  Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr Gr
T  Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr Gr
U  Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr Gr
X  Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr Gr
Y  Or Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr Gr
Z-Series  Or Or Or Or Or Or Or Ge Ge Ge Ge Ge Ge Ge Ge Gr Gr

Install CRANKCASE LOWER SECTION .

Assemble engine.

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