Camshaft Timing Chain

Camshaft Timing Chain

Special tools, testers and auxiliary items required

• Locking Pin (T10060 A)

• Counter Hold Tool (T10355)

• Assembly Tool (T10352) and 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 using the (T10352) or (T10352/1) in direction of - arrow - depending on the version.






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






- Rotate the vibration damper using the (T10355) into the "TDC" position - arrow -.






• 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 the - arrow - and secure it with a (T40011).






- Remove the oil pump chain tensioner - 1 -.

- Remove the oil pump chain tensioner.

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

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

• The following procedure must be performed in one step. A second technician is needed.

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

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

- Check the crankshaft TDC position.






- Mount the timing chain on the exhaust camshaft.






- Mount the timing chain on the crankshaft.

- Turn the intake camshaft using the wrench in the direction of the - arrow - and mount the timing chain.

- Install the timing chain tensioning rail 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 bearing bracket bolts - arrows -. Refer to => [ Camshaft Timing Chain Overview ] Camshaft Timing Chain Overview.

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

Further installation is performed in reverse order of removal, noting the following:

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

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

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

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

- Adjust the subframe mount. Refer to => [ Subframe Mount, Adjusting ] Adjustments.