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 31 051 Replacing timing chain (N54, N54T)
Special tools required:
Necessary preliminary tasks
- Remove FAN COWL .
- Remove CYLINDER HEAD COVER .
- Remove all spark plugs.
- Remove CHAIN TENSIONER .
- Remove CRANKSHAFT SEAL at front.
- Remove BELT TENSIONER .
- Remove VIBRATION DAMPER .
- Remove INTAKE AND EXHAUST ADJUSTERS .
Remove fastener (1) in direction of arrow.
Installation note:
Install fastener (1) with bore facing outwards.
Secure engine in TDC firing position of cylinder no. 1 with special tool 11 0 300 .
Mark flywheel and transmission housing with a line (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.