Timing chain replacement: Peugeot 4007 2.4 (4B12)

🧭 Before you start

• Opens: engine oil
• Timing position: the crankshaft or camshaft is set and locked during this job
• Renewed: timing chain

Don't miss

• Always renew the timing chain
• If the timing chain is to be re-used, mark the running direction before removal
• Never turn the engine in the direction opposite to that of normal operation
• Use the special tool to counterhold
• Align the orange plate(s) on the timing chain with the mark on the camshaft(s) gearwheel

🔧 Engine codes this applies to

📋 Procedure

Preparation and removal

1. Hooks:
2. Timing chain cover bolts
3. Always renew the timing chain
4. If the timing chain is to be re-used, mark the running direction before removal
5. Never turn the engine in the direction opposite to that of normal operation

6. Note: Avoid bending, torsion or traction
7. Disconnect the positive crankcase breather hoses from the valve cover
8. Remove the coolant reservoir
9. Remove the bolts shown
10. Disconnect the feed line from the power steering pump
11. Disconnect the power steering hose
12. Crankshaft pulley
13. Coolant pump pulley
14. Engine oil drain plug
15. Raise the vehicle until the wheels are suspended
16. Remove the front underbody cover
17. Remove the right-hand splash guard
18. Check that cylinder 1 is still at TDC
19. Check the timing marks
20. Unscrew the coolant pump pulley bolts
21. Remove the ancillary drive belt
22. Remove the crankshaft pulley
23. Use the special tool to counterhold
24. Drain the engine oil
25. Remove the air-conditioning compressor bolts
26. Remove the air-conditioning compressor bracket
27. Remove the oil sump
28. Use a special tool to cut the sealant
29. Disconnect the alternator electrical connections
30. Remove the alternator mounting bolts
31. Remove the belt tensioner
32. Fit the engine hanger
33. Remove the bolts from the engine/gearbox support
34. Remove the engine mounting bracket
35. Remove the bolts from the timing chain cover

Installation and checks

36. Fit the timing chain
37. Align the orange plate(s) on the timing chain with the mark on the camshaft(s) gearwheel
38. Align the crankshaft timing marks
39. Fit the chain tensioner
40. Remove the screwdriver
41. Fit the chain guide
42. Refit the timing chain upper guide rail
43. Remove the Allen key
44. Fit the crankshaft pulley
45. Note: Finger-tight only
46. Turn the crankshaft clockwise to align the timing marks
47. Check that cylinder 1 is still at TDC
48. Apply sealant as indicated
49. Refit the timing chain cover
50. Within 3 minutes
51. Tighten the timing cover bolt(s)
52. Engage the sealing ring in the timing cover
53. Fit the engine supports
54. Fit the ancillary drive belt tensioner
55. Ancillary drive belt guide:
56. Refit the alternator
57. Refit the coolant pump pulley
58. Renew the crankshaft oil seal
59. Fit the crankshaft pulley
60. Apply sealant as indicated
61. Refit the oil sump
62. Within 3 minutes
63. Refit the bolts
64. Refit the air-conditioning compressor bracket
65. Refit the air-conditioning compressor
66. Fit the ancillary drive belt
67. Tighten the crankshaft pulley centre bolt
68. Use the special tool to counterhold
69. Fit the coolant pump pulley bolts
70. Renew the seal
71. Tighten the bleed screw
72. Apply sealant as indicated
73. Refit the valve cover
74. Pre-tighten the bolt(s)
75. Tighten the bolts
76. Refit the oil filler tube
77. Reconnect the battery

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