Timing Chain: Service and Repair

Timing Chain and Sprocket Replacement

Special Tools

J 45059 Electronic Torque Angle Meter

Removal Procedure

1. Remove the engine front cover. Refer to Engine Front Cover Replacement (Service and Repair).




2. Align the timing marks on the sprockets so that they are as close as possible.




3. Remove the timing chain dampener bolt.
4. Remove the timing chain dampener.




5. Remove the camshaft sprocket bolt.




6. Remove the camshaft sprocket and the timing chain.

Important: If the sprocket does not come off easily, a light blow on the lower edge of the sprocket with a plastic mallet should dislodge the sprocket.


7. Remove the crankshaft sprocket.




8. Remove the balance shaft drive gear in order to access the camshaft thrust plate.




9. Remove the camshaft thrust plate bolts, if required.
10. Remove the camshaft thrust plate, if required.




11. Remove the balance shaft driven gear bolt, if required.
12. Remove the balance shaft driven gear, if required.
13. Clean and inspect all of the timing components for wear and damage. Refer to Camshaft Timing Chain and Sprocket Cleaning and Inspection (L26) ().
14. If the pistons have been moved in the engine, use the following procedure:

1. Turn the crankshaft so that the number one piston is at top dead center.
2. Turn the camshaft so that, with the sprocket temporarily installed, the timing mark is straight down.

Installation Procedure




1. Install the balance shaft driven gear, if required.

Notice: Refer to Fastener Notice (Fastener Notice).

2. Prevent the balance shaft from rotating and install the balance shaft driven gear bolt.

1. Tighten the balance shaft driven gear bolt to 22 N.m (16 lb ft).
2. Use the J 45059 to rotate the bolt an additional 70 degrees.




3. Install the camshaft thrust plate, if required.
4. Install the camshaft thrust plate bolts, if required.

Tighten the bolts to 15 N.m (11 lb ft).




5. Install the balance shaft drive gear.




6. Align the timing marks on the balance shaft drive gear and the balance shaft driven gear.




7. Install the crankshaft sprocket.
8. Install the timing chain and the camshaft sprocket.




9. Assemble the timing chain on the sprockets with the timing marks as close together as possible.




10. Install the camshaft sprocket bolt.

1. Tighten the camshaft sprocket bolt to 100 N.m (74 lb ft).
2. Use the J 45059 to rotate the bolt an additional 90 degrees.




11. Install the timing chain dampener.
12. Install the timing chain dampener bolt.

Tighten the bolt to 22 N.m (16 lb ft).

Important: Rotate the engine two revolutions and check the timing marks. Ensure that the marks are aligned.


13. Install the engine front cover. Refer to Engine Front Cover Replacement (Service and Repair).