Left and Right Timing Chain Covers

Left and Right Timing Chain Covers

Special tools, testers and auxiliary items required

• Hand drill with plastic brush attachment

• Protective goggles

• Sealant, refer to the Parts Catalog

Removing

• During installation, all cable ties must be installed at the same location.

- Remove the rear engine cover - 2 - upward.






- Remove the affected secondary air injection combination valve. Refer to => [ Secondary Air Injection Left Combination Valve ] Secondary Air Injection Left Combination Valve and for the => [ Secondary Air Injection Right Combination Valve ] Secondary Air Injection Right Combination Valve.

Left Timing Chain Cover

- Remove the bolts - 1 - and move the bracket together with the wiring harnesses to the side.






• Ignore - 2 and 3 -.

- Remove the bolts - 1 through 8 - and the bracket - arrows A and B -.






- Carefully remove the left timing chain cover from the bond.

Right Timing Chain Cover

- Disconnect the connectors and free up the wires.






4 For Heated Oxygen Sensor (HOS) (G39)
5 For Oxygen Sensor (OS) after Three Way Catalytic Converter (TWC) (G130)

• Ignore - 1, 2 and 3 -.

- Remove the bolts - 3 - and move the bracket together with the wiring harnesses to the side.






• Ignore - 1 and 2 -.

- Free up the wiring harness on the right timing chain guard.

- Remove the bolts - 1 through 8 - and the bracket - arrows A and B -.






- Carefully remove the right cover for the timing chain from the bond.

Installing

Tightening specifications:

• => [ Left Timing Chain Cover, Tightening Specifications and Sequence ] Timing Chain Covers Overview

• => [ Right Timing Chain Cover, Tightening Specifications and Sequence ] Timing Chain Covers Overview

• Replace bolts which have been tightened to an additional torque.

• Replace O-rings.

- Remove any old sealant from the surfaces.

Risk of contaminating lubricating system.

• Cover open parts of engine.

Risk of eye injury.

• Wear protective goggles.

- Remove the sealant residue on the covers for the timing chain, cylinder block and cylinder head, for example using a rotating plastic brush.






- Clean any oil or grease off the sealing surfaces.

• Note the expiration date of the sealing compound.

- Cut the tube nozzle at the front marking (nozzle diameter approximately 2 mm).






The lubrication system could be plugged with excess sealant.

• Do not apply sealant bead thicker than indicated.

- Apply the sealant bead - arrow - to the clean sealing surfaces on the left timing chain cover as shown in the illustration.






• Thickness of sealant bead: 2.5 mm.

• Covers for timing chain must be installed within 5 minutes after applying sealant.

- Position the left timing chain cover and tighten the bolts. Refer to => [ Left Timing Chain Cover, Tightening Specifications and Sequence ] Timing Chain Covers Overview.






- Position the right timing chain cover and tighten the bolts. Refer to => [ Right Timing Chain Cover, Tightening Specifications and Sequence ] Timing Chain Covers Overview.






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

- Install the secondary air injection combination valve. Refer to => [ Secondary Air Injection Left Combination Valve ] Secondary Air Injection Left Combination Valve, => [ Secondary Air Injection Right Combination Valve ] Secondary Air Injection Right Combination Valve.