Contents: Removal ⇩ Installation ⇩
Special tool
 Positioning tool 303-645 |  Camshaft Installation/Locking Tool 303-530 |  Timing Chain Tensioner Tool 303-532 |
Removal
1. Disconnect the ground cable from the battery. For more information, refer to Specification.
2. Remove the battery tray. For more information, refer to Battery Mounting Shelf (76.10.30)
3. Raise and support the vehicle.
4. Remove the engine front cover. For more information, refer to Engine Front Cover (12.65.01)
5. Remove the crankshaft position sensor (sKR sensor). For more information, refer to Crankshaft Position Sensor (CPS) (18.30.12)
6. Turn the crankshaft until the flat surfaces on the camshafts are parallel to the contact surfaces of the cylinder head.
7.
NOTE: The engine is now in the SAFE position.
Block the crankshaft.
- Install the special tool.
- Screw in the screw.
8. Remove the right camshaft variable valve timing (VCT) unit.
- Remove 3 bolts.
- Remove and discard the O-rings.
9. Install the special tool on the right-hand cylinder head. Screw in three bolts.
10. Remove the primary timing chain tensioner. Remove the two bolts.
11. Remove the primary timing chain tensioner guide. Remove the bolt.
12. Remove the primary timing chain.
13. Remove the secondary timing chain tensioner and the secondary timing chain. Remove the two remaining bolts.
14.
CAUTION: Discard the bolts as they are no longer needed.
Remove the camshaft sprockets. Remove 2 bolts.
15. Remove the special tool on the right cylinder head. Unscrew the 3 bolts.
16.
CAUTION: Loosen the camshaft bearing caps evenly and gradually.
(The original article can be found here www.LRman.ru)
NOTE: Remove the camshaft bearing caps. Note: Remember their position, direction and marking. Each cap is marked with its position (number) and direction (arrow).
Remove the camshaft bearing caps. Remove 20 bolts.
17. Remove the camshafts.
Installation
1. Check and adjust valve lifter clearances.
2. Replace the valve adjusting shims with thinner shims from those available. Apply a thin film of clean engine oil to the new valve adjusting shims.
3. Install the camshafts.
- Clean the contact surfaces of the elements.
- Lubricate the camshaft journals and cams.
5. Install the Torx head bolts to secure the sprocket to the camshafts.
6.
CAUTION: The camshaft lobes must be rotated 180 degrees from the corresponding valve lifters, otherwise the valve clearance will be incorrect.
Measure and record the valve clearances. Turn the sprockets using the Torx head bolts.
7.
CAUTION: Loosen the camshaft bearing caps evenly and gradually.
NOTE: Remove the camshaft bearing caps. Note: Remember their position, direction and marking. Each cap is marked with its position (number) and direction (arrow).
Remove the camshaft bearing caps. Remove 20 bolts.
8. Remove the camshafts.
9. Remove the valve lifters and replace them with the selected lifters.
10. Install the camshafts.
- Lubricate the camshaft journals and cams.
- Clean the contact surfaces of the elements.
12.
CAUTION: The camshaft lobes must be rotated 180 degrees from the corresponding valve lifters, otherwise the valve clearance will be incorrect.
Check that the valve clearances are adjusted correctly.
- Turn the sprockets using the Torx head bolts.
- Once the inspection is complete, remove the Torx head bolts from the camshafts.
14. Hold the piston of the left secondary timing chain tensioner. Use a metal pin with a diameter of 1 mm to hold the piston of the chain tensioner.
15. Install the secondary timing chain tensioner and chain onto the camshaft sprockets.
16.
NOTE: Lightly tighten the Torx head bolts securing the sprocket to the camshaft, the sprockets MUST move freely.
Install the secondary timing chain and sprockets onto the camshafts. Install the Torx head bolts to secure the sprocket to the camshafts.
17. Screw in the bolts securing the secondary timing chain tensioner. Tighten the bolts. (tightening torque 12 Nm).
18. Tighten the secondary timing chain. Remove the metal pin.
19. Install the primary timing chain. Make sure the slack side of the timing chain is on the tensioner side.
20. Install the primary timing chain tensioner guide. Tighten the bolts. (tightening torque 12 Nm).
21.
CAUTION: When compressing the tensioner, do not release the ratchet until the tensioner piston is fully retracted into the hole. Failure to do so will result in damage to the ratchet.
Install the primary chain tensioner.
- Using a 3mm diameter metal rod, secure the chain tensioner piston.
- Tighten the bolts (tightening torque 12 Nm).
- Remove the metal pin.
22.
CAUTION: The intake camshaft sprocket bolt MUST be tightened before the exhaust camshaft sprocket bolt. Failure to do so will result in engine damage.
CAUTION: Apply counterclockwise force to the special tool to tighten the primary timing chain on its running side.
CAUTION: Use new bolts.
Install the special tool on the exhaust camshaft sprocket.
- Intake camshaft sprocket mounting bolt (tightening torque 120 Nm).
- Exhaust camshaft sprocket mounting bolt (tightening torque 120 Nm).
23. Remove the special tool on the right cylinder head.
24. Install the right VCT control unit.
- Install new O-rings.
- Tighten the new bolts. (tightening torque 22 Nm).
26. Install the CKP sensor. For more information, refer to Crankshaft Position (CKP) Sensor (18.30.12)
27.
NOTE: Check valve clearances before installing valve covers.
Install the engine front cover. For more information, refer to Engine Front Cover (12.65.01)
28. Install the battery tray. For more information, refer to Battery Mounting Shelf (76.10.30)
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