Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
11 21 500 Replacing crankshaft (N54, N54T)
Aluminum screws/bolts are permitted with and without
color coding (blue).
For reliable identification:
Aluminum screws/bolts are not magnetic.
Jointing torque and angle of rotation must be observed without fail (risk of damage).
Necessary preliminary tasks:
- Remove ENGINE
- Mount engine on ASSEMBLY STAND
- Remove VIBRATION DAMPER
- Remove OIL SUMP
- Remove OIL PUMP
- Remove TRIANGULAR DRIVE for oil pump
- Remove TIMING CHAIN MODULE
- Remove CYLINDER HEAD .
- Remove FLYWHEEL
- Removing all PISTONS
Release screws (1).
Tightening torque 11 13 5AZ .
Installation note:
Replace aluminum screws.
Remove oil deflector (2).
Release screws (1).
Tightening torque 11 11 2AZ .
Unfasten screws (2).
Tightening torque 11 11 3AZ .
Installation note:
Replace aluminum screws.
Release screws (1).
Tightening torque 11 11 4AZ .
Unfasten screws (2).
Tightening torque 11 11 2AZ .
Installation note:
Replace aluminum screws.
Release steel screws (1 to 14) from outside inwards.
Tightening torque 11 11 1AZ .
Release screws (1).
Tightening torque 11 11 3AZ .
Installation note:
Replace aluminum screws.
Remove crankshaft lower section in upward direction.
Remove both crankshaft seals (1).
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.