11 21 500 

Attention!

Weight of crankshaft is approx. 20 kg.

Risk of injury from sharp edge of housing.

Replacing crankshaft on engine BMW N63

Installation note:

Layout of main bearing caps.
All numbers must be read from the cylinder bank (5 to 8) (see arrows).

Replacing crankshaft on engine BMW N63

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

Replacing crankshaft on engine BMW N63

Release oil pump spacer bolts (1) with special tool 13 5 020.

Replacing crankshaft on engine BMW N63

Release main bearing taper screw mounting (1).

Release oil pump spacer boltr (2).

Replacing crankshaft on engine BMW N63

Release all threaded support sleeves (1).

Replacing crankshaft on engine BMW N63

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

Replacing crankshaft on engine BMW N63

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).

Replacing crankshaft on engine BMW N63

Release screw for oil nozzle (1).

Tightening torque: 11 11 8 AZ:

Type Thread Tightening specification Torque
1AZ Bearing cap to crankcase (ASA collar screw)
N63 M11x102 Replace screws
Jointing torque 20 Nm
Torque angle 100 °
2AZ Bearing cap to crankcase (ASA collar screw 10.9)
N63 M8x70 Replace screws
Jointing torque 10 Nm
Torque angle 55 °
3AZ Threaded support sleeves
N63 Jointing torque 6 Nm
4AZ Angled screw connection to crankcase
N63 M8x37 Flanged head screw 10.9 34 Nm
5AZ Spacer bolt, oil pump
N63 M8 34 Nm
6AZ Screw plug, water drain
N63 M14x1.5 Replace seal 25 Nm
7AZ Screw plug, main oil gallery rear and in V‐space right
N63 M18x1.5 Replace seal 25 Nm
8AZ Oil nozzle to crankcase
N63 M12x1 10 Nm
9AZ Special tool to crankcase
N63 M8x35 20 Nm
10AZ Special tool to crankcase
N63 M10x35 40 Nm
10AZ Special tool 11 8 930 to special tool 00 2 300
N63 M14x35 160 Nm

 

Replacing crankshaft on engine BMW N63

Installation note:

Check oil nozzle (1) for clear passage with compressed air.

Observe fastening on oil nozzle.

Replacing crankshaft on engine BMW N63

Installation note:

Observe fastening in crankcase.

Replace crankshaft main bearing shells.

Replacing crankshaft on engine BMW N63

Installation note:

Observe arrangement of main bearing caps.

All numbers must be read from the cylinder bank (5 to 8) (see arrows).

Replacing crankshaft on engine BMW N63

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

Turn back all threaded support sleeves hand-tight.

Installation note:

Coat all bearing positions with engine oil.

Attention!

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

Install crankshaft.

Fit bearing caps (1 to 5).

Replacing crankshaft on engine BMW N63

Set down bearing caps positioned from 1 to 5.

Insert all collar bolts (M11) hand-tight.

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

Replacing crankshaft on engine BMW N63

Installation note:

For a better overview of the screw connection quality, mark the head of all collar bolts after joining with a line (1) using an oil-proof marker pen.

Check angle tightening.

Replacing crankshaft on engine BMW N63

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

Tightening torque: 11 11 1AZ.

Replacing crankshaft on engine BMW N63

Insert all collar bolts (M8) hand-tight.

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

Replacing crankshaft on engine BMW N63

Installation note:

For a better overview of the screw connection quality, mark the head of all collar bolts after joining with a line (1) using an oil-proof marker pen.

Check angle tightening.

Replacing crankshaft on engine BMW N63

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

Replacing crankshaft on engine BMW N63

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

Tightening torque: 11 11 3 AZ.

Replacing crankshaft on engine BMW N63 Secure main bearing taper screw mounting (1).

Tightening torque: 11 11 4 AZ.

Secure oil pump spacer bolts (2).

Tightening torque: 11 11 5 AZ.

Replacing crankshaft on engine BMW N63

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.

Replacing crankshaft on engine BMW N63

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

Slide crankshaft in direction of 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.

Assemble engine.

Installation note:

Modify dowel pin for flywheel.