Camshaft Timing Chain

Camshaft Timing Chain

Special tools, testers and auxiliary items required

• Locking Tool (T40098)

• Counter Hold Tool (T10355)

• Assembly Tool (T10352/1)

• Locking Pin (T40011)

Removing

- Remove timing chain upper cover. Refer to => [ Upper Timing Chain Cover ] Upper Timing Chain Cover.




The control valve has a left thread.

- Remove the control valve in direction of - arrow - using the (T10352/1).






- Remove the bolts - arrows - and remove the bearing bracket.






- Turn the vibration damper to "TDC" - arrow - using the (T10355).






• The notch on the vibration damper must line up with the arrow marking on the timing chain lower cover.

• The markings - 1 - on the camshafts must point upward.

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

- Press the oil pump chain tensioner in the direction of - arrow - and secure it with a (T40011).






- Remove the oil pump chain tensioner - 1 -.

- Lift the chain tensioner locking wedge by inserting a scriber or a suitable screwdriver into the hole in the chain tensioner in direction - arrow 1 -.






- Press the timing chain tensioning rail in the direction of - arrow 2 - and secure it with the (T40011).

- Remove the camshaft timing chain from the cylinder head.

• The intake camshaft switches in the engine direction of rotation.

- Remove the timing chain tensioning rail - 2 -.






- Remove the guide rail for the camshaft timing chain - 1 -.

- Remove the timing chain.

Installing

• Tightening specifications, refer to => [ Camshaft Timing Chain Overview ] Camshaft Timing Chain Overview.

• The following must be performed in one sequence. A second technician is required for this.

• The painted links of the camshaft timing chain must be positioned on the markings on the chain sprockets.

• Hold the wrench tight until the tensioning rail is installed.

- Mount the camshaft timing chain on the exhaust camshaft.

- Mount the camshaft timing chain on the crankshaft.

- Turn the intake camshaft in direction of - arrow - with the wrench and install the camshaft timing chain.






- Install the tensioning rail for the camshaft timing chain and tighten the bolt - 2 -.






- Install the camshaft timing chain guide rail and tighten the bolts - 1 -.

- Mount the bearing bracket and the bolts - arrows - hand-tight.






- Remove the (T40011).

- Tighten the bolts - arrows -. Refer to => [ Camshaft Timing Chain Overview ] Camshaft Timing Chain Overview.

- Install the control valve => [ (Item 6) Control Valve ] Camshaft Timing Chain Overview.

The rest of the assembly is basically a reverse of the disassembling sequence. When doing this note the following:

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

- Install timing chain upper cover. Refer to => [ Upper Timing Chain Cover ] Upper Timing Chain Cover.

- Install the ribbed belt tensioner. Refer to => [ Ribbed Belt Tensioner ] Service and Repair.

- Install the ribbed belt. Refer to => [ Ribbed Belt ] Ribbed Belt.