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Home >> BMW >> 2021 >> X5 xDrive40i >> Repair and Diagnosis >> External Pages >> Different car >> Section 263 (Engine Oil Pan, Timing Case Cover, Crankcase Ventilation System, Crankshaft, Flywheel, & Engine Vibration Damper - Repair (G07)) >> 11 21 Crankshaft And Bearings >> 11 21 500 Replace crankshaft (X7 xDrive50i 2019-2020, X7 M50i 2020-2022) >> Installing the crankshaft

Installing the crankshaft

WARNING: This page is about a different car, the 2022 BMW X7, 2021 BMW X7, 2020 BMW X7, and 2019 BMW X7. However, it is still accessible from the selected car via links, so may be relevant.

Rotate the threaded support sleeves in reverse 

G15271891Courtesy of BMW OF NORTH AMERICA, INC.

When replacing the crankshaft bearings or crankshaft 

Replacement: Observing the classification of bearing shells 

NOTE: RISK OF DAMAGE 
Engine damage caused by incorrectly installed bearing shells and bearing brackets  .
If the bearing shells and bearing brackets are installed incorrectly, then engine damage can occur  .
  • Always install all bearing shells and bearing brackets in the same position from which they were removed.
NOTE: TECHNICAL INFORMATION 
The main bearing shells and guide bearing shells are classified by numbers.
Observe the classification of the main and guide bearing shells.
NOTE: TECHNICAL INFORMATION 
Observe the classification of the bearing shells  .
The code letters of the crankshaft and crankcase mark the classification of the bearing shell for the respective bearing position.
The letters from the crankcase and crankshaft are required to determine the bearing shell colors.
The first letter from the left applies to the first bearing position on the timing chain drive system.
Bearing seat 3 is designed as a guide bearing.
G14253173Courtesy of BMW OF NORTH AMERICA, INC.
Bearing seats
Bearing seat 1
Bearing seat 2
Bearing seat 3 (guide bearing)
Bearing seat 4
Bearing seat 5
Bearing seats
Bearing seat 1
Bearing seat 2
Bearing seat 3 (guide bearing)
Bearing seat 4
Bearing seat 5
G14240172Courtesy of BMW OF NORTH AMERICA, INC.

Check 

  Code letter on crankcase Code numbers on the crankshaft
Bearing seat 1     
Bearing seat 2     
Bearing seat 3 (guide bearing shells)     
Bearing seat 4     
Bearing seat 5     
G14253175Courtesy of BMW OF NORTH AMERICA, INC.

Result 

» Note the result in the table.

Measure

TABLE FOR BEARING SHELLS OF BEARING SHELLS N63

TIGHTENING TORQUES SPECIFICATION

Bearing cap to crankcase (ASA (ASA) collar screw)
M11x99
Replace screws.
Screw in hand-tight.
Joining torque  20 Nm
Angle of rotation  125°
TIGHTENING TORQUES SPECIFICATION

Bearing cap to crankcase (ASA collar screw 10.9)
M8X70
Replace screw.
Joining torque  10 Nm
Angle of rotation  63°
Fig 2: Main Bearing Cap Collar Screws Tightening Sequence (M8)
G14253169Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUES SPECIFICATION

Threaded support bushing
Threaded support bushing Tightening torque  6 Nm
G14253168Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUES SPECIFICATION

Angled screw connection to crankcase
M8x37 flat-head screw/spacer bolt/spacer screw Joining torque  10 Nm
Angle of rotation  45°
G14253167Courtesy of BMW OF NORTH AMERICA, INC.
TECHNICAL DATA SPECIFICATION

Crankshaft mounted
Ease of movement of the crankshaft with connecting rod and piston   0... 5 Nm
G14253184Courtesy of BMW OF NORTH AMERICA, INC.
TECHNICAL DATA SPECIFICATION

Crankshaft bearing clearance, axial
Crankshaft side clearance 0.080... 0.246 mm
G14253186Courtesy of BMW OF NORTH AMERICA, INC.

Install the tensioning rail of the timing chain for cylinder 5-8 

G14253104Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUES SPECIFICATION

Jump guard
M6x25 Tightening torque  10 Nm
TIGHTENING TORQUES SPECIFICATION

Water/oil temperature sensor
Sensor M12x1.5 Tightening torque  18 Nm
G14253105Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUES SPECIFICATION

Timing case cover on bottom crankcase
M8x45, M8x55, M8x65, M8x85 tightening torque  25 Nm
Fig 3: Timing Case Cover Screws Tightening Sequence
G14240098Courtesy of BMW OF NORTH AMERICA, INC.

Securing the screw connection 2 on the front timing case cover 

TIGHTENING TORQUES SPECIFICATION

Timing case cover on bottom crankcase
M8x45, M8x55, M8x65, M8x85 tightening torque  25 Nm
Fig 4: Front Timing Case Cover Screws Tightening Sequence
G14240097Courtesy of BMW OF NORTH AMERICA, INC.

Mounting the screw connection 3 on the front timing case cover 

TIGHTENING TORQUES SPECIFICATION

Timing case cover on bottom crankcase
M8x45, M8x55, M8x65, M8x85 tightening torque  25 Nm
Fig 5: Carrier Plate Screws Tightening Sequence
G14240096Courtesy of BMW OF NORTH AMERICA, INC.
G14253204Courtesy of BMW OF NORTH AMERICA, INC.

Installing the sealing cap with radial shaft seal (oil pan removed) 

NOTE: The description is based on an installed component.
NOTE: TECHNICAL INFORMATION 
The sealing surfaces must be free of oil, grease and cleaning agents.
G14253206Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: The description is based on an installed component.
G14253207Courtesy of BMW OF NORTH AMERICA, INC.

Engine oil 

Technically suitable engine oils for BMW Group engines 

G14253156Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work