Replacing crankshaft (S63T2) (X5 M)

Special tools required: 

• 00 2 010
• 00 9 120
• 11 4 350
• 11 6 251
• 11 6 252
• 13 5 020

Attention! 

Weight of crankshaft is approx. 20 kg.

Risk of injury  from sharp edge of housing.

Necessary preliminary work 

• Remove ENGINE .
• Mount engine on ASSEMBLY STAND  .
• Remove RIGHT CYLINDER HEAD  and LEFT CYLINDER HEAD .
• Remove HUB FOR VIBRATION DAMPER .
• Take off OIL PUMP .
• Remove the UPPER SECTION OF THE OIL SUMP .
• Remove LOWER GEAR CASE COVER .
• Remove PISTONS .
• Remove FLYWHEEL .
• Remove RADIAL SHAFT SEAL IN LOWER GEAR CASE COVER  and CRANKSHAFT SEAL ON THE TRANSMISSION SIDE) .
• Remove TIMING CHAINS .

All numbers must be read from the cylinder bank (1 to 4) (see arrows).

Courtesy of BMW OF NORTH AMERICA, INC.

Main bearing caps (1 to 5) opposite the output end on the timing chain drive.

Courtesy of BMW OF NORTH AMERICA, INC.

Release main bearing taper screw mounting (1).

Release oil pump spacer bolt (2) (N630 1).

Courtesy of BMW OF NORTH AMERICA, INC.

Release all threaded support sleeves (1).

Courtesy of BMW OF NORTH AMERICA, INC.

Release collar bolts (M8) in sequence 10 to 1.

Courtesy of BMW OF NORTH AMERICA, INC.

Release collar bolts (M11) in sequence 10 to 1.

Remove main bearing caps 1 to 5.

Attention! 

Remove crankshaft with a 2nd person, weight approx. 25 kg.

Lift out crankshaft and set down safely (secure against turning).

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw for oil nozzle (1).

Tightening torque: 11 11 7AZ .

Illustration: N63.

Courtesy of BMW OF NORTH AMERICA, INC.

Observe fastening on oil nozzle.

Illustration: N63.

Courtesy of BMW OF NORTH AMERICA, INC.

Replace CRANKSHAFT MAIN BEARING SHELLS .

All numbers must be read from the cylinder bank (1 to 4) (see arrows).

Courtesy of BMW OF NORTH AMERICA, INC.

Main bearing caps (1) is opposite the output end on the timing chain drive.

Turn back all threaded support sleeves hand-tight.

Attention! 

Install crankshaft with a 2nd person, weight approx. 25 kg.

Install crankshaft.

Fit bearing caps (1 to 5).

Set down bearing caps positioned from 1 to 5.

Insert all collar bolts (M11) hand-tight.

Insert collar bolts (M11) in sequence (1 to 10).

Check angle tightening.

Courtesy of BMW OF NORTH AMERICA, INC.

Secure collar bolt (1) with special tool 00 9 120.

Tightening torque 11 11 1AZ .

Courtesy of BMW OF NORTH AMERICA, INC.

Insert all collar bolts (M8) hand-tight.

Secure collar bolts (M8) in sequence (1 to 10).

Courtesy of BMW OF NORTH AMERICA, INC.

Check angle tightening.

Courtesy of BMW OF NORTH AMERICA, INC.

Secure collar bolt (1) with special tool 00 9 120.

Tightening torque: 11 11 2AZ .

Courtesy of BMW OF NORTH AMERICA, INC.

Secure all threaded support sleeves (1) with special tool 11 4 350.

Tightening torque: 11 11 3AZ .

Courtesy of BMW OF NORTH AMERICA, INC.

Secure main bearing taper screw mounting (1).

Tightening torque: 11 11 4AZ .

Courtesy of BMW OF NORTH AMERICA, INC.

Check CRANKSHAFT COEFFICIENT OF FRICTION  .

Determine crankshaft breakaway torque with special tool 00 2 010.

Rotate crankshaft at central bolt using special tool 00 2 010.

If the breakaway torque is too high, it will be necessary to correct the BEARING CLEARANCE .

Courtesy of BMW OF NORTH AMERICA, INC.

Secure special tool 11 6 252 to crankcase with magnetic base.

Slide crankshaft in the direction of the arrow forwards as far as it will go.

Set special tool 11 6 251 to zero.

Slide crankshaft (1) in the direction of the arrow towards rear and determine value.

Check SIDE CLEARANCE  .

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.