Note: The camshafts can be turned without the risk of valve-piston collision when the crankshaft is set to a position 30° before TDC of the piston of the first cylinder.
Note: The timing chain can be replaced without disassembling the engine. Using the tools listed below, the new chain can be connected to the old one, threaded around the sprockets and calked.
Attention! If assembled incorrectly, the valves may collide with the piston crowns!
General information
Timing drive components installation details
1 - Timing marks for bringing the engine to the TDC position of the end of the compression stroke of the first cylinder; 2 - Rods with a diameter of 4 mm for fixing camshafts; 3 - When installing the chain, make sure that the camshaft adjuster tabs are in the "retard" position.; 4 - The camshaft can be locked from turning using a key; 5 - Tightening of the exhaust camshaft sprocket bolts (5) should be done with a force of 22 Nm (type A - TORX T30) or 20 Nm + 90° (type B - TORX T40); 6 - Tensioner plug; 7 - Plunger; 8 - Tensioner housing; 9 - Pin with spring
To perform the procedures for removing and installing timing drive components, you will need the following special tools:
- Camshaft Locking Pin (4mm) x4 - No.111589031500;
- Camshaft Key - No.104589010100;
- Crankshaft key - No.001589650900;
- Flywheel/Drive Disc Locking Tool - #602589004000;
- Timing chain link kit - No.602589024000;
- Timing chain link puller (item 1) - No.602589023300;
- Timing chain link puller (item 2) - No.602589056300;
- Timing chain link puller (item 3) - No.602589056301;
- Timing Chain Link Installation Tool - No.000589584300;
- Set of stamp holders for installing timing chain links - No.103589016300;
- Toolbox - No.602589009800;
- Viscous coupling pulley holder - No.120589020100.
Please note the following points:
- Unless otherwise stated, rotate the engine in the normal direction only;
- Observe the specified tightening forces for fasteners;
- If equipped, do not forget to mark the installation position of the CKP sensor before removal;
- Do not turn the crankshaft by the camshaft sprockets or other timing drive sprockets;
- Do not turn the crankshaft or camshafts with the timing chain removed.
Servicing Timing Drive Components
1. Disconnect the negative cable from the battery.
2. To make it easier to turn the engine, remove all spark plugs.
3. Bring the crankshaft to the TDC position of the piston of the first cylinder (1).
4. Insert the locking rods (2) with a diameter of 4 mm into the camshafts.
5. When installing the chain, ensure that the camshaft adjuster tabs (3) are in the "retard" position.
Caution! If assembled incorrectly, the valves may collide with the piston crowns! 6. The camshaft can be blocked from turning using the key (4).
7. Tightening of the bolts of the exhaust camshaft sprockets (5) should be done with a force of 22 Nm (type A - TORX T30) or 20 Nm + 90° (type B - TORX T40).
Note: During repair work, type A bolts should be replaced with disposable type B bolts.
Note: The bolts securing the intake camshaft adjuster and the exhaust camshaft sprocket are disposable and must be replaced without fail.
8. Before starting repair procedures, loosen the tensioner plug (6) one full turn.
9. With the engine position 30° after TDC of the piston of the first cylinder, remove the tensioner assembly (see section Timing chain tensioner).
10. After completing the necessary repairs, install the tensioner.
11. Remove the tensioner spring plug (6).
12. Push the plunger (7) into the tensioner housing (8) in the direction indicated by the arrow.
13. Install the tensioner housing and tighten it to 80 Nm.
14. Install the plunger (7) into the body (8).
15. Install the remaining components (6) and (9) and tighten the plug to 40 Nm.
16. Do not forget to lubricate the crankshaft pulley center bolt and its washer(s) before installation.