Timing chain replacement: Toyota Avensis T27 (1AD-FTV)

🧭 Before you start

Fits: platform codes 2.0, D-4D

• Opens: engine oil
• Timing position: the crankshaft or camshaft is set and locked during this job
• Special tools named: locking pin
• Renewed: o-rings note

Don't miss

• Turn the crankshaft 90° in the direction of rotation
• Use a wrench to counterhold the camshafts

🔧 Engine codes this applies to

📐 56 workshop diagrams for 1AD-FTV

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

📋 Procedure

Preparation and removal

1. Disconnect the vacuum hose from the vacuum pump
2. Note: Avoid bending, torsion or traction
3. Timing chain cover:
4. Remove the engine support bracket
5. After applying liquid sealant:

6. Remove the throttle body
7. Remove the coolant bypass hose(s)
8. EGR system:
9. Remove the bracket
10. Remove the EGR pipe
11. Remove the EGR valve
12. Remove the dipstick
13. Remove the dipstick tube
14. Remove the injection lines
15. Remove the fuel return hose
16. Remove the fuel rail
17. Remove the inlet manifold cover
18. Remove the turbo pressure sensor
19. Remove the gas filter
20. Remove the gas filter bracket
21. Remove the engine cover brace
22. Remove the inlet manifold
23. Remove the coolant bypass hose(s)
24. Remove the oil cooler
25. Remove the coolant bypass hose(s)
26. Remove the turbocharger oil feed line
27. Remove the oil cooler bracket
28. Remove the heat shield
29. Remove the coolant bypass hose(s)
30. Remove the water inlet
31. Remove the valve
32. With diesel particulate filter:
33. Remove the fuel line bracket
34. Remove the fuel injector
35. All vehicles:
36. Remove the fuel lines from the high-pressure fuel pump
37. Remove the fuel return hoses from the injectors
38. Remove the injectors
39. Remove the vacuum hoses
40. Remove the vacuum switching valve (VSV)
41. Remove the crankcase breather hose
42. Remove the oil filler cap
43. Remove the cylinder head cover
44. Remove the lower oil sump
45. Use a special tool to cut the sealant
46. Remove the plug
47. Drain the engine oil
48. Note: Use a drain tube
49. Refit the plug
50. Remove the oil filter cover
51. Remove the oil filter cartridge
52. Remove the oil filter with bracket
53. Remove the oil strainer
54. Remove the camshaft position sensor
55. Disconnect the crankshaft position sensor
56. Remove the coolant pump
57. Turn the crankshaft to TDC for cylinder 1
58. Align the crankshaft timing marks
59. Align the camshaft timing marks
60. Apply alignment marks
61. Turn the crankshaft 90° in the direction of rotation
62. Remove the crankshaft pulley centre bolt
63. Remove the crankshaft pulley
64. Use the special tools
65. Remove the timing chain cover
66. Remove the gasket
67. Remove the O-ring(s)
68. If necessary:
69. Remove the high-pressure pump
70. Apply pressure to the tensioner
71. Lock the chain tensioner with a locking pin
72. Remove the chain tensioner
73. Remove the chain tensioner rail(s)
74. Remove the chain guide rail
75. Remove the camshaft gearwheel
76. Note: Use a wrench to counterhold the camshafts
77. Remove the timing chain
78. Remove the oil pump gearwheel
79. Remove the crankshaft gearwheel

Installation and checks

80. Fit the timing chain onto the crankshaft gearwheel
81. Align the coloured chain link with the marks on the gearwheels
82. Fit the timing chain and gearwheels together
83. Check that the position is correct as shown
84. Tighten the camshaft gearwheel
85. Note: Use a wrench to counterhold the camshafts
86. Refit the oil pump gearwheel
87. Refit the chain guide rail
88. Refit the chain tensioner rail(s)
89. Align the holes on the locking arm and automatic tensioner
90. Apply pressure to the tensioner
91. Lock the chain tensioner with a locking pin
92. Refit the chain tensioner
93. Remove the locking pin
94. Refit the high-pressure pump
95. Renew the O-ring
96. Renew the gasket
97. Renew the O-ring
98. Apply liquid sealing compound
99. Wait for 3 minutes
100. Refit the timing chain cover
101. Refit the bolts
102. Wait for 15 minutes
103. Tighten the timing cover bolt(s)
104. Check for correct fitting
105. Tighten the crankshaft pulley centre bolt
106. Use the special tools
107. Refit the coolant pump
108. Reconnect the crankshaft position sensor
109. Refit the camshaft position sensor
110. Refit the oil strainer
111. Refit the oil filter with bracket
112. Refit the oil filter cartridge
113. Refit the oil filter cover
114. Apply liquid sealing compound
115. Wait for 3 minutes
116. Refit the bolts
117. Wait for 10 minutes
118. Tighten the oil sump bolts
119. Apply sealant as indicated
120. Refit the cylinder head cover
121. Refit the crankcase breather hose
122. Refit the vacuum switching valve (VSV)
123. Refit the vacuum hoses
124. Refit the injectors
125. Refit the fuel return hoses to the injectors
126. Refit the fuel lines to the high-pressure fuel pump
127. Refit the valve
128. With diesel particulate filter:
129. Refit the fuel injector
130. Refit the fuel line bracket
131. All vehicles:
132. Refit the water inlet
133. Refit the coolant bypass hose(s)
134. Renew the O-rings
135. Note: Oil the O-ring(s)
136. Note: Do not oil the O-ring
137. Refit the oil cooler bracket
138. Refit the turbocharger oil feed line
139. Refit the coolant bypass hose(s)
140. Oil filter
141. Injector
142. Note: Do not oil the O-ring
143. Refit the oil cooler
144. Valve cover
145. Inlet manifold
146. Refit the inlet manifold
147. Refit the engine cover brace
148. Refit the gas filter bracket
149. Refit the gas filter
150. Refit the turbo pressure sensor

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