Timing Chain: Service and Repair

Timing Chain
This is a "Trustmark Authoring Standards (TAS) Repair Procedure"
- TAS style procedures can be identified by steps that have no accompanying step text and the magenta color of the electrical connectors and fasteners such as nuts, bolts, clamps or clips.
- TAS removal and installation procedures use a sequence of color illustrations to indicate the order to be followed when removing/disassembling or installing/assembling a component.
- Many of the TAS procedures will have the installation information within the removal steps.
- The TAS color illustrations use a variety of symbols to indicate important details of the procedures. It is important to understand these symbols in order to properly used the TAS procedures.
Refer to How to Use TAS Procedures and TAS Symbol Glossary at Vehicle | Description and Operation for additional information on these TAS procedures.
For additional information, refer to How to Use TAS Procedures How to Use TAS Procedures

Removal

CAUTION: Extreme cleanliness must be exercised when handling these components.

NOTE:
Make sure the timing chain free length is on the tensioner run of the chain before releasing the tensioner locking device.

WARNING: Make sure to support the vehicle with axle stands.
1 Raise and support the vehicle.
2 Remove the cover and disconnect the battery ground cable.
For additional information, refer to Specifications Specifications
3 Remove the crankshaft front oil seal.
For additional information, refer to Engine Front Seal Engine Front Seal
4 Remove the RH engine mount.
For additional information, refer to Engine Mount RH Engine Mount RH
5 Remove the timing cover.
For additional information, refer to Timing Cover Service and Repair




6 Position and lock the crankshaft.
Special Service Tool




Locking Tool, Crankshaft, 303-1219




To depress the chain tensioner piston and lock it in position with a 2mm, or less, diameter pin.
Apply an even pressure in a counter clockwise direction.
Lift the piston ratchet clip.
Install a pin with 2mm, or less, diameter.





CAUTION: Mark the components to aid installation.

CAUTION: Extreme cleanliness must be exercised when handling this component.
7 Remove the timing chain tensioner.




8 Remove and discard the camshaft bore plugs.




9 Install the camshaft alignment special tool.
Special Service Tool




Locking Tool, Camshaft, 303-1223

10 Using the special tool, lock the camshaft drive sprockets.
Special Service Tool




Locking Tool, Camshaft Tool, 303-1225

Special Service Tool




Locking Tool, Camshaft Tool, 303-1226

11 Remove and discard the 2 camshaft sprockets bolts





12 Remove the sprockets and the chain.

Installation
1 Install the chain and the sprockets.

CAUTION: Do not tighten the camshaft sprocket bolts at this stage.

CAUTION: Make sure that new bolts are installed.
2 Install the sprocket retaining Torx bolts to the camshafts.

CAUTION: Make sure that the area around the component is clean and free of foreign material.

CAUTION: Extreme cleanliness must be exercised when handling these components.
3 Install the timing chain tensioner.
Torque to: 10 Nm
4 Release the chain tensioner
5 Using the special tool, lock the camshaft drive sprockets.
Special Service Tool




Locking Tool, Camshaft Tool, 303-1225

Special Service Tool




Locking Tool, Camshaft Tool, 303-1226
6 Tighten the exhaust camshaft drive sprocket.
Step 1: 75 Nm

Step 2: 90 degree
7 Tighten the inlet camshaft drive sprocket.
Torque to: 110 Nm
8 Remove the camshaft alignment special tool.

CAUTION: Make sure that the area around the component is clean and free of foreign material.

CAUTION: The plugs must be installed dry.
9 Install new camshaft bore plugs.

10 Remove the crankshaft locking tool.

11 Install the crankshaft front oil seal.
For additional information, refer to Engine Front Seal Engine Front Seal

12 Install the timing cover.
For additional information, refer to Timing Cover Service and Repair

13 Install the RH engine mount.
For additional information, refer to Engine Mount RH Engine Mount RH

14 Connect the battery ground cable and install the cover.
For additional information, refer to Specifications Specifications