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 28 020 Replace Alternator Drive Belt Tensioner (N54)
Special tools required:
- 11 3 340
Necessary preliminary tasks:
- Remove drive belt.
Remove special tool 11 3 340. See 11 3 340 LOCKING PIN (2)
Release screw on belt tensioner.
Tightening torque, see 11 28 1AZ in ENGINE -- TORQUE SPECIFICATIONS -- TWIN TURBO
Assemble engine.
NO RELATED
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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.