Timing chain replacement: Ford Mondeo01 3.0 Duratec-ST (MEBA)

🧭 Before you start

Fits: platform codes ST220, (3.0, DURATEC-ST, V6)

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

Don't miss

• Never turn the engine in the direction opposite to that of normal operation
• The cover must be fitted within 6 minutes of applying the sealant

🔧 Engine codes this applies to

📋 Procedure

Preparation and removal

1. Never turn the engine in the direction opposite to that of normal operation
2. Always use new gaskets
3. Cylinder head cover
4. Apply alignment marks to the timing chain links
5. Disconnect the brake servo vacuum hose from the inlet manifold

6. Remove the brackets
7. Lock the tensioner
8. Remove the upper inlet manifold
9. Oil sump
10. Disconnect the positive crankcase breather hoses from the valve cover
11. Apply alignment marks to the timing chain links
12. Remove the ignition coil
13. Right-hand bank:
14. Align the coloured chain link with the marks on the gearwheels
15. Disconnect the oxygen sensor connection
16. Compress the tensioner
17. Unlock the tensioner
18. Lock the tensioner
19. Remove the bolts from the engine wiring bracket
20. Removal sequence:
21. Count the number of timing chain links between the timing marks
22. Turn the engine 120° anti-clockwise
23. Check the timing marks
24. Remove the crankshaft pulley centre bolt
25. Drain the engine oil
26. Remove the exhaust pipe bracket(s)
27. Remove the bolts shown
28. In the order shown
29. Remove the lower splash guard
30. Remove the drive belt
31. Remove the cover
32. Use the special tool
33. Use the special tools
34. Remove the alternator
35. Remove the alternator air cooling duct
36. Remove the camshaft pulley(s)
37. Loosen the bolt
38. 1 turn
39. Disconnect the power steering pump lines
40. Unclip the wiring
41. Remove the expansion tank
42. Use a trolley jack to support the engine
43. Remove the engine mounting bracket
44. Use an Allen key
45. Remove the power steering pump line supports
46. Remove the power steering pump
47. Disconnect the power steering line
48. Remove the crankshaft pulley centre bolt
49. Use a special tool to hold the crankshaft pulley
50. Remove the crankshaft pulley
51. Use the special tools
52. Remove the crankshaft position sensor
53. Remove the camshaft position sensor(s)
54. Remove the crankshaft position sensor plate
55. Note: Mark the position
56. Right-hand bank:
57. Remove the chain tensioner
58. Remove the chain guide(s)
59. Remove the timing chain
60. Turn the crankshaft clockwise as shown
61. Left-hand bank:
62. Remove the chain guide(s)
63. Remove the timing chain

Installation and checks

64. Refit the crankshaft gearwheel
65. Fit the chain tensioner
66. Refit the crankshaft pulley bolt
67. Fit the chain guide
68. Refit the chain tensioner rail(s)
69. Fit the chain tensioner
70. Unlock the tensioners
71. Refit the crankshaft position sensor plate
72. Apply sealant as indicated
73. Refit the drain plug
74. In the order shown
75. Refit the camshaft position sensor
76. Renew the O-rings
77. Refit the crankshaft pulley
78. Stage 1:
79. Stage 2:
80. Stage 4:
81. Refit the power steering pump pulley
82. Remove the jack
83. Refit the coolant expansion tank
84. Renew the O-ring
85. Refit the air duct
86. Refit the alternator
87. Tighten the bolts
88. In the order shown
89. Refit the tie rod end nut
90. Refit the cover
91. Refit the drive belt
92. If the marks are misaligned, rotate the engine 1 turn
93. Apply sealant as indicated
94. Refit the exhaust pipe
95. Use new nut(s)
96. Right-hand bank:
97. Refit the cylinder head cover
98. Renew the gasket
99. Apply sealant as indicated
100. Note: The cover must be fitted within 6 minutes of applying the sealant
101. In the order shown
102. Reconnect the positive crankcase breather hoses to the valve cover
103. Refit the bracket
104. Refit the wiring loom to the cylinder head
105. Refit the spark plug cables
106. Refit the bracket
107. Left-hand bank:
108. Refit the cylinder head cover
109. Renew the gasket
110. Apply sealant as indicated
111. Note: The cover must be fitted within 6 minutes of applying the sealant
112. In the order shown
113. Refit the wiring loom to the cylinder head
114. Reconnect the oxygen sensor
115. Reconnect the positive crankcase breather hoses to the valve cover
116. Refit the spark plug cables
117. Refit the bracket
118. Refit the ignition coil(s)
119. Reconnect the ignition coil wiring
120. Refit the bracket
121. Refit the upper inlet manifold
122. Renew the gaskets
123. In the order shown
124. Reconnect the inlet manifold vacuum hoses
125. Refit the brackets
126. Reconnect the accelerator cable
127. Refit the air hose
128. Refit the solenoid valve(s)
129. Reconnect the crankcase breather hose
130. Reconnect the brake servo vacuum hose
131. Reconnect the throttle position sensor connector
132. Reconnect the idle air control connector
133. Refit the engine cover
134. Refit the engine lower cover
135. Refit the wheel arch cover lining
136. Refit the front right wheel
137. Refill the engine oil
138. Reconnect the battery earth cable

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