Intake and exhaust camshafts (Range Rover 3)

Contents: Removal ⇩ Installation ⇩

Before disconnecting the battery, make sure that all precautions specified for this procedure have been followed.

GENERAL INFORMATION, Precautions when working with electrical equipment.

Removal

1. Disconnect the negative cable from the battery.

2. Remove the valve cover with gasket.

TD6 ENGINE, REPAIR WORK, Valve cover gasket.

3. Remove the exhaust gas recirculation (EGR) heat exchanger.

EMISSION CONTROL SYSTEMS - Td6, REPAIR WORK, Exhaust Gas Recirculation (EGR) Cooler.

4. Remove the accessory drive belt.

ENGINE STARTING AND BATTERY CHARGING SYSTEM, REPAIR WORK, Attachment drive belt - Td6 engine.

5. Remove the vacuum pump.

BRAKE SYSTEM, REPAIR WORK, Vacuum pump -Td6.

6. Unscrew the chain tensioner plug from the front cover.

7. Unscrew the plug of the hole of the crankshaft TDC lock.

8. Using the LRT-12-212 tool installed on the crankshaft pulley, turn the crankshaft in the direction of normal rotation until the piston of the first cylinder is at TDC on the compression stroke.

9. To fix the crankshaft in the TDC position of the first cylinder, install the LRT-12-108 device.

CAUTION: Do not rotate the engine against the normal direction of rotation.

10. Rotate the exhaust camshaft with a hex wrench until the chain tensioner is fully compressed.

11. Secure the cocked tensioner with the LRT-12-172 tool.

12. Remove the two bolts and the oil feed guide plate. Discard the gasket.

13. Holding the camshafts by the hexagons, unscrew the bolts securing both sprockets.

14. To avoid damaging the valves when rotating the camshafts, remove the LRT-12-108 tool and turn the crankshaft approximately 45° in the direction opposite to normal rotation.

15. Unscrew and dispose of the sprocket mounting bolts, remove the sprockets from the camshafts.

16. Note how the camshaft bearing caps are marked. The intake camshaft is marked with the letter "E" and the caps are marked "E1" through "E7" starting from the sprocket when looking at the engine from the exhaust side. The exhaust camshaft is marked with the letter "A" and the caps are marked "A1" through "A7" starting from the sprocket when looking at the engine from the exhaust side.

17. Sequentially and evenly loosen and unscrew the 14 camshaft bearing cap mounting bolts.

18. Remove the camshaft bearing caps.

19. Remove the camshaft.

Installation

1. Wipe the camshaft, journal beds and bearing caps.

2. Lubricate the camshaft, its bearings and covers.

3. Place the camshaft in the cylinder head in a position approximately corresponding to TDC at the start of the working stroke of the first cylinder.

4. Install the bearing caps in their places, screw in the mounting bolts and tighten them evenly and consistently to a torque of 10 N·m.

5. Install the sprockets on the camshafts and tighten them with new bolts until the sprockets can rotate freely without end runout.

6. Wipe the oil feed guide plate and the mating surface.

7. Install a new gasket on the oil feed guide bar.

8. Install the bar in place and tighten it with bolts. Tightening torque 10 Nm.

9. Rotate the crankshaft in the normal direction of rotation to install the LRT-12-108 tool and lock the shaft at TDC on the compression stroke.

CAUTION: Do not rotate the engine against the normal direction of rotation.

10. While holding the exhaust camshaft with an Allen key, tighten the sprocket mounting bolt and turn the exhaust camshaft in the normal direction of rotation to fully compress the chain tensioner.

11. Remove the LRT-12-172 tool from the tensioner.

12. Loosen the exhaust camshaft sprocket mounting bolt enough to allow it to rotate freely without end runout.

13. Wipe the tensioner window plug and plug socket.

14. Replace the plug and tighten it. Tightening torque 30 Nm.

15. Install the LRT-12-174 tool on the cylinder head.

16. Using the LRT-12-173 tool, set the intake camshaft to the correct position and tighten the LRT-12-174 tool mounting bolt.

17. Holding the intake camshaft with a hex key and using a torque sector, tighten the intake camshaft sprocket mounting bolt to 20 Nm and turn it another 35°.

18. Loosen the LRT-12-174 tool mounting bolt and remove the LRT-12-173 tool from the intake camshaft.

19. Using the LRT-12-173 tool, set the exhaust camshaft to the correct position and tighten the LRT-12-174 tool mounting bolt.

20. Holding the exhaust camshaft with a hex key and using a torque sector, tighten the exhaust camshaft sprocket mounting bolt to 20 Nm and turn it another 35°.

21. Remove fixtures LRT-12-174 and LRT-12-173.

22. Remove tool LRT-12-108 to release the crankshaft.

23. Using the LRT-12-212 tool installed on the crankshaft pulley, rotate the crankshaft two turns in the direction of normal rotation until the piston of the first cylinder is at TDC on the compression stroke.

24. To fix the crankshaft in the TDC position of the first cylinder, install the LRT-12-108 device.

CAUTION: Do not rotate the engine against the normal direction of rotation.

25. Install the LRT-12-173 tool onto the intake camshaft.

26. If the intake camshaft is in the correct position, the bearing surfaces of the LRT-12-173 tool will touch the valve cover recess plane on both sides.

27. Remove the LRT-12-173 tool from the intake camshaft and install it on the exhaust camshaft.

28. If the exhaust camshaft is in the correct position, the bearing surfaces of the LRT-12-173 tool will touch the valve cover recess plane on both sides.

29. If necessary, the valve timing adjustment should be repeated.

30. Remove fixtures LRT-12-174 and LRT-12-108.

31. Screw in the plug of the crankshaft TDC locking hole.

32. Install the vacuum pump.