Camshaft Timing Chains

Camshaft Timing Chains

Special tools, testers and auxiliary items required

• Locking Pin (T40071)

Removing

• The transmission is removed.

- Remove timing chain lower cover. Refer to => [ Lower Timing Chain Cover ] Lower Timing Chain Cover.

- Remove the affected camshaft timing chain from camshafts. Refer to => [ Camshaft Timing Chains, Removing from Camshafts ] Camshaft Timing Chains, Removing From Camshafts.






If the running direction is reversed on a used camshaft timing chain, it could be destroyed.

• Paint arrows to mark the left and right camshaft timing chain running direction so they can be installed again. Do not mark the camshaft timing chain with a punch, notch or something similar.

- Remove the (T40071) and the left camshaft timing chain.

- Remove the bolts - 1 and 2 - and the right chain tensioner.






- Press the timing mechanism chain tensioner guide rail in the direction of the - arrow - and secure the chain tensioner using a (T40071).






- Remove the drive chain sprocket mounting pin bolt - 1 -.

- Remove the drive chain sprocket and remove the right camshaft timing chain.

Installing

• For the correct tightening specifications, refer to => [ Camshaft Timing Chains Overview ] Camshaft Timing Chains Overview.

• If the tensioning element was removed from the chain tensioner, note installation position: Hole in housing floor faces toward chain tensioner, piston faces toward tensioning rail.

• Replace bolts that are tightened to the specification.

Risk of damaging valves and piston crowns.

• If camshafts are rotated, crankshaft may not rest with any piston at TDC.

- Install the left camshaft timing chain on the drive chain sprocket according to marking that was made earlier when it was removed and guide it upward toward the cylinder head.






- Press the guide rail for the left camshaft timing chain tensioner down and secure the chain tensioner using a (T40071).

- Install the right camshaft timing chain on the drive chain sprocket according to marking that was made earlier when it was removed and guide it upward toward the cylinder head.






- Install the drive chain sprocket. Refer to => [ Installation Location of the Mounting Pins for the Right Camshaft Timing Chain Drive Sprocket ] Timing Mechanism Drive Chain Overview.

- Tighten the drive chain sprocket mounting pin bolt - 1 -.

- Remove the (T40071).

• Ignore - arrow -.

- Install the chain tensioner on the right cylinder head.






- Fasten bolts - 1 and 2 -.

Install in reverse order of removal paying attention to the following:

- Position the camshaft timing chain on the camshafts => [ Installing ] Camshaft Timing Chains, Removing From Camshafts.

- Install the timing chain lower cover. Refer to => [ Lower Timing Chain Cover ] Lower Timing Chain Cover.