Timing Chain: Service and Repair

Timing Chain, Crankshaft Sprocket, Camshaft Position Actuator, and Solenoid Valve Replacement (L99)

Special Tools
* EN 46330 Timing Chain Tensioner Retaining Pin
* J 8433 Puller Bar
* J 41478 Crankshaft Front Oil Seal Installer
* J 41558 Crankshaft Sprocket Remover
* J 41665 Crankshaft Balancer and Sprocket Installer
* J 41816-2 Crankshaft End Protector
* J 42386-A Flywheel Holding Tool

Removal Procedure




1. Remove the oil pump. Refer to Oil Pump, Screen, and Crankshaft Oil Deflector Replacement Service and Repair.
2. Remove the starter motor. Refer to Starter Replacement Service and Repair.

Caution: Refer to Fastener Caution Fastener Caution.

Note: Ensure that the teeth of the J 42386-A mesh with the teeth of the engine flywheel.

3. Install the J 42386-A (1) and bolts. Use one M10-1.5 x 120 mm and one M10-1.5 x 45 mm bolt for proper tool operation.

Tighten the J 42386-A bolts to 50 Nm (37 lb ft).

4. Remove the camshaft position actuator. Refer to Camshaft Position Actuator Replacement Camshaft Position Actuator Replacement.




5. Remove the timing chain tension bolts (231) and tensioner (232).




6. Using the J 41816-2 (1), the J 41558 (2), bolts (3) and the J 8433 (4) in order to remove the crankshaft sprocket.




7. Remove the crankshaft sprocket (207).




8. Remove the crankshaft sprocket key, if required.

Installation Procedure




1. Install the key into the crankshaft keyway, if previously removed.




2. Tap the key (122) into the keyway until both ends of the key bottom onto the crankshaft.




3. Install the crankshaft sprocket (207) onto the front of the crankshaft. Align the crankshaft key with the crankshaft sprocket keyway.




4. Use the J 41478 (1) and the J 41665 (2) in order to install the crankshaft sprocket. Install the sprocket onto the crankshaft until fully seated against the crankshaft flange.




5. Compress the timing chain tensioner guide and install the EN 46330 .




6. Install the timing chain tensioner (232) and bolts (231).

Tighten the bolts to 25 Nm (18 lb ft).

7. Install the camshaft position actuator. Refer to Camshaft Position Actuator Replacement Camshaft Position Actuator Replacement.




8. Remove the J 42386-A (1) and bolts.
9. Install the starter motor. Refer to Starter Replacement Service and Repair.
10. Install the oil pump. Refer to Oil Pump, Screen, and Crankshaft Oil Deflector Replacement Service and Repair.