Toyota 13050-38010 Gear Assy, Camshaft Timing

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Remove the No. 1 timing chain while ensuring not to rotate the crankshaft.

Look for visible oil leakage and test the pushrod for movement.

Verify that the timing marks on the camshaft timing gear assemblies and the marks on the camshaft timing sprockets are aligned with their corresponding marks on top of the front camshaft bearing caps.

Double-check the alignment of the camshaft and crankshaft timing marks.

1. Disconnect the cable from the negative terminal of the battery. 2. Drain the engine oil and coolant. 3. Remove the battery. 4. Remove the engine cover. 5. Remove the air filter housing. 6. Remove the radiator and the cooling fan. 7. Remove the serpentine drive belt. 8. Remove the upper intake manifold. 9. Remove the ignition coils and the valve covers. 10. Remove the Variable Valve Timing (VVT) sensor. 11. Remove the dipstick and dipstick tube. 12. Disconnect the electrical connector from the power steering pressure switch and detach the power steering pump. 13. Remove the alternator. 14. Detach the air conditioning compressor. 15. Unbolt the drive belt tensioner. 16. Remove the idler pulley bolts and the two idler pulleys. 17. Remove the crankshaft pulley. 18. Remove the four bolts from the front of the upper oil pan. 19. Remove the two oil cooler hoses. 20. Disconnect the two radiator hoses from the water inlet. 21. Disconnect all five water bypass hoses. 22. Remove the water inlet and discard the old 0-ring and gasket. 23. Remove the timing chain cover and keep track of the bolt locations. 24. Bring the piston in the No. 1 cylinder to TDC on its compression stroke. 25. Turn the stopper plate on the No. 1 tensioner clockwise and push in the tensioner plunger. 26. Remove the chain tensioner slipper. 27. Unscrew the idler sprocket shaft and remove the idler shaft, sprocket, and collar. 28. Remove the two chain vibration dampers. 29. Remove the No. 1 timing chain. Caution: Do not rotate the crankshaft while the No. 1 timing chain is removed. 30. Remove the crankshaft timing chain sprocket. 31. Compress chain tensioner No. 2 and lock it in the retracted position. 32. Unscrew the two bolts that secure the camshaft timing sprockets to the camshafts and remove them as an assembly. 33. Remove chain tensioner No. 2 and store it with the other components. 34. Repeat the process for the No. 3 timing chain and tensioner.

Push in the plunger and insert a drill or punch to lock it in the retracted position.