Timing chain replacement: Suzuki Grand Vitara 2.5 (H25A)

🧭 Before you start

Fits: platform codes 2.5, V6

• Timing position: the crankshaft or camshaft is set and locked during this job
• Renewed: o-ring left cylinder head

Don't miss

• Always renew the timing chain
• Never turn the engine in the direction opposite to that of normal operation

🔧 Engine codes this applies to

📐 24 workshop diagrams for H25A

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

📋 Procedure

Preparation and removal

1. Unless otherwise advised by the manufacturer, the following procedures are recommended:
2. Always renew the timing chain
3. Camshaft housing
4. Never turn the engine in the direction opposite to that of normal operation
5. Note: Avoid bending, torsion or traction

6. Remove the air filter and the air inlet hose
7. Disconnect the accelerator cable from the throttle body
8. Oil strainer
9. Disconnect the inlet manifold hoses
10. Exhaust manifold
11. Remove the inlet manifold
12. Propeller shaft/differential
13. Remove the valve covers
14. Remove the coolant pump pulley
15. Remove the radiator
16. Remove the thermostat housing
17. Remove the ancillary drive belt
18. Remove both front wheels
19. Disconnect the tie rods
20. Remove:
21. Steering rack:
22. Disconnect the propeller shaft from the differential
23. Remove the drive shafts from the differential
24. Remove the front differential
25. Remove:
26. Split sump:
27. Remove the oil separator
28. Use a special tool to lock the crankshaft
29. Remove the crankshaft pulley centre bolt
30. Remove the crankshaft pulley
31. Use the special tools
32. Remove the crankshaft position sensor
33. Remove the timing chain cover
34. Left cylinder head:
35. Align the camshaft timing marks
36. Remove the upper chain tensioner
37. Remove the camshaft gearwheels
38. Remove the timing chain
39. Right cylinder head:
40. Remove the upper timing chain guide
41. Remove the lower timing chain guide
42. Remove the timing chain tensioner adjuster
43. Remove the idler pulley
44. Remove the timing chain
45. Remove the idler pulley
46. Remove:
47. Idler shaft
48. Remove the chain tensioner
49. Remove the inlet camshaft gearwheel
50. Remove the crankshaft gearwheel
51. Remove the chain guide(s)
52. Remove the camshaft bearing caps

Installation and checks

53. Tighten the camshaft bearing caps
54. Fit the timing chains
55. Align the timing marks
56. Renew the O-ring
57. Left cylinder head:
58. Apply sealant as indicated
59. Refit the valve cover
60. Apply sealant as indicated
61. In the reverse order to that shown
62. Remove the timing chain tensioner adjuster
63. Remove the camshafts together with the timing chain

Other SUZUKI procedures

• Suzuki Liana, Jimny No VVT M13A/M16A timing chain replacement
• Suzuki Liana Chain
• Suzuki Grand Vitara 1.6 M16A timing chain replacement
• Suzuki Grand Vitara 2.0 J20A timing chain replacement
• Suzuki Wagon R 1.3 M13A timing chain replacement
• Suzuki Ignis, New Ignis, VVT M13A timing chain replacement
• Suzuki Swift 1.2 DDiS D13A/Z13DT timing chain replacement
• Suzuki SX4 VVT 1.6 M16A timing chain replacement
• Suzuki SX4 no VVT 1.5 M15A timing chain replacement
• Wagon R (M13/G13/Z13DT) clutch