Removal
Timing Chain, Sprockets, and/or Tensioner Replacement^ Tools Required
- J 38122-A Crankshaft Pulley Holder
- J 43405 Engine Support Fixture Adaptor
- J 44811 Accessory Belt Tensioner Unloader
- SA9105E 3-Bar Engine Support Fixture
- SA9127E Gage Bar Set
- J 39914 Serpentine Belt Tension Unloader
- J 45027 Tensioner Tool
Removal Procedure
1. Disconnect the negative battery cable.
2. Disconnect the Intake Air Temperature (IAT) sensor connector.
3. Loosen the clamp at the air cleaner assembly.
4. Remove the push pin attachment from the outlet resonator/duct assembly to the support bracket.
5. Loosen the clamp at the throttle body assembly.
6. Disconnect the PCV fresh air vent hose at the cam cover.
7. Remove the outlet resonator/duct assembly.
8. Remove the air cleaner assembly hold-down bolt.
9. Remove the air cleaner assembly.
10. Remove the ignition module bolts.
11. Remove the ignition module assembly.
12. Disconnect the de-gas hose at the clamp at the cylinder head and unclip from the fuel rail. Position away from the cam cover assembly.
13. Disconnect the ground strap at the rear of the cam cover assembly.
14. Relieve the fuel system pressure.
15. Disconnect the after the pressure has been relieved.
16. Disconnect the fuel rail bracket and bolt at the rear of the cam cover.
17. While supporting the fuel rail assembly with an open end wrench, loosen the transfer line fitting at the fuel rail.
18. Position the fuel line away from the cam cover assembly.
19. Remove the cam cover assembly bolts.
20. Remove the cam cover assembly.
Important: To rotate the camshaft, use a 24 mm open-end wrench on the camshaft flats. Camshaft should be rotated in a clockwise direction only, facing camshaft sprockets from the passenger side of the vehicle.
21. Locate the No. 1 piston to approximately 60° before top dead center (diamond shaped hole on intake camshaft sprocket at 12 o'clock position). Remove the spark plugs. This will ease the rotation effort.
22. Remove the upper timing chain guide.
Important: The timing chain tensioner must be removed to unload the chain tension before the timing chain is removed. If it is removed, the timing chain may bind and be difficult to remove.
23. Remove the timing chain tensioner.
24. Remove the fixed timing chain guide access plug.
25. Using a magnetic socket, remove the upper fixed guide bolt.
26. Install the set up for SUV application.
27. Remove the right-hand engine mount-to-bracket bolts.
28. Remove the right-hand mount assembly nuts.
29. Remove the right-hand engine mount assembly.
30. Remove the right-hand mount bracket.
31. Remove the right-hand engine mount bracket.
32. Raise the vehicle on a hoist.
33. Remove the right wheel and splash shield.
Important: Do not rest the engine assembly on the oil pan plug outside of the oil pan near the crankshaft or an oil leak may result.
34. Install the block of wood (1x2x4) between the oil pan and the cradle.
35. Install the J 44811.
36. Remove the accessory drive belt.
37. Remove the tensioner bolt. To remove the bolt, an access hole has been provided through the inner and outer engine rail.
38. Remove the tensioner assembly.
39. Install the J 38122-A.
Important: The crankshaft balancer pulley bolt head and washer assembly prevents oil leakage at the center of the pulley. Do not damage the sealing surfaces. If the pulley cannot be removed by pulling with the hand, use a three-jaw puller.
40. Remove the crankshaft balancer pulley bolt and pulley.
Discard the pulley bolt.
Important: To avoid damage to the front cover assembly, do not pry against the cover.
41. Remove the front cover assembly bolts.
42. Remove the lower water pump assembly bolt.
43. Remove the front cover assembly and gasket.
44. Remove the adjustable guide bolt.
45. Remove the lower fixed guide bolt.
46. Remove the fixed guide.
47. Use a 24 mm wrench to hold the camshaft assembly while removing the exhaust sprocket bolt. Discard the bolt.
48. Remove the exhaust sprocket.
49. Remove the adjustable guide through the top of the cylinder head.
50. Use a 24 mm wrench to hold the camshaft assembly while removing the intake sprocket bolt. Discard the bolt.
51. Remove the intake sprocket.
52. Remove the timing chain assembly through the top of the cylinder head.
53. Remove the timing chain drive sprocket from the crankshaft.
54. Remove the timing chain oiler nozzle and bolt.
55. Clean the oil nozzle orifice on the block to remove any debris.
Important: Replace the timing chain guides if the wear exceeds 1.12 mm (0.045 inch).
56. Inspect the timing chain guide for wear.
57. Inspect the timing chain and the sprockets for signs of excessive wear, chipping, or seizure to links on the chain.