Auxiliary belt replacement: BMW E60, 93 N47, N57 drive (N47D20A, N47D20B, N47D20C, N47D20D, …)

🧭 Before you start

Fits: platform codes 116D, |, 118D, 120D, 123D, 316D, 318D, 320D, EFFICIENTDYNAMICS, XD, 325D, 330D, 520D, S, XDRIVE, 18D, 20D, 25D, SDRIVE, 16D

• Timing position: the crankshaft or camshaft is set and locked during this job
• Special tools named: locking pin

Don't miss

• At removal, mark the direction of rotation; when refitting ensure the drive belt rotates in the same direction

🔧 Engine codes this applies to

📋 Procedure

Preparation and removal

1. Remove the tensioner locking pin
2. Remove the noise insulation cover
3. If necessary:
4. Remove the air filter housing
5. Remove the ancillary drive belt

6. Note: At removal, mark the direction of rotation; when refitting ensure the drive belt rotates in the same direction
7. Vehicles with electronic power steering:
8. Vehicles without air conditioning:
9. Remove the idler pulley
10. Remove the bracket

Installation and checks

11. Fit the ancillary drive belt
12. All vehicles:
13. Turn the tensioner pulley clockwise to release the tension
14. Lock the tensioner; use a locking pin
15. Ancillary drive belt:
16. If necessary:
17. Refit the air filter housing
18. All vehicles:
19. Refit the noise insulation cover

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