Timing chain replacement: Mercedes-Benz eng. 5.0 (113.964)

🧭 Before you start

Fits: platform codes 500, 4MATIC

• Opens: fuel
• Timing position: the crankshaft or camshaft is set and locked during this job

Don't miss

• Do not turn the engine anti-clockwise
• The paint on the camshaft gearwheel and chain must be aligned
• Do not disconnect the circuit
• If the special tools do not fit

🔧 Engine codes this applies to

📐 30 workshop diagrams for 113.964

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

📋 Procedure

1. Before disconnecting the battery cable, check the audio system security code
2. Ignition coil
3. Remove the engine upper cover
4. Chain tensioner
5. Timing chain assembly links:

6. Remove the ignition coils
7. Always use new gaskets
8. Remove the spark plugs
9. Remove the camshaft gearwheel
10. Disconnect the fuel lines from the fuel rail
11. Use the special tools
12. Disconnect the vacuum hose from the valve cover
13. Installation sequence:
14. Remove the cylinder head cover
15. Right cylinder head:
16. Disconnect the vacuum hose from the valve cover
17. Remove the cylinder head cover
18. Position the crankshaft to 40° after TDC
19. Note: Do not turn the engine anti-clockwise
20. Lock the camshafts
21. Use the special tools
22. The paint on the camshaft gearwheel and chain must be aligned
23. Check the camshaft timing marks
24. Remove the drive belt
25. Stage 1:
26. Note: Do not disconnect the circuit
27. Position the crankshaft to 40° after TDC
28. Note: Do not turn the engine anti-clockwise
29. Remove the Hall sensor
30. Fit the camshaft locking tools
31. Turn the engine clockwise until the link for separating the timing chain is easily accessible
32. If the special tools do not fit
33. Right cylinder head:
34. During the removal of the camshaft gearwheel, the timing chain should remain in position
35. Remove the bolts in the reverse order to that shown
36. Use a wrench
37. Secure the chain
38. Use the special tool
39. Left cylinder head:
40. Right cylinder head:
41. Use the special tool
42. Fit the timing chain and camshaft gearwheel together
43. Tighten the camshaft gearwheels
44. Stage 1:
45. Stage 2:
46. Check the timing marks again
47. Pull the removed timing chain pins out of the chain separating tool
48. Right cylinder head:
49. Remove the locating bush from the camshaft
50. Refit the camshaft bearing bridge
51. Renew the bolt(s)
52. Tighten the bolts
53. In the order shown
54. Renew the O-ring
55. Refit the Hall sensor(s)
56. Renew the seal
57. Fit the chain tensioner
58. Refit the alternator
59. Fit the drive belt
60. Right cylinder head:

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