Land Rover Defender: Continuous Variable Valve Lift

REMOVAL AND INSTALLATION

SPECIAL TOOL(S)

JLR-303-1639

CVVL brake unit reset tool

JLR-303-1647

CVVL Locating Pins

GENERAL EQUIPMENT

PART(S)

REMOVAL

CAUTION: Before disconnecting any components, make sure the area is clean and free from foreign material. When disconnected all openings must be sealed.

NOTE:

• This procedure contains some variation in the illustrations depending on the vehicle specification, but the essential information is always correct.
• This procedure contains illustrations showing certain components removed to provide extra clarity.

1. Disconnect the startup battery ground cable.

2. Remove the fuel injectors.

3.

Loosen, but do not fully remove the 4 bolts.

4.

Remove the 2 bolts.

5.

Install the special tools as illustrated.

Special Tool(s): JLR-303-1647

6.

WARNING: Be prepared to collect escaping fluid.

CAUTION:

• Make sure the CVVL solenoids do not support the weight of the CVVL assembly.
• Do not invert the Continuous Variable Valve Lift (CVVL) assembly. Failure to follow this instruction may result in damage to the CVVL assembly.

• Remove the 8 bolts in the illustrated sequence.
• Remove the Continuous Variable Valve Lift (CVVL) assembly.
• If the CVVL assembly is being replaced under warranty, make sure that an engine oil sample is taken and the data sheet is completed and sent back with the returned CVVL assembly.

7.

NOTE:

• This step is only required if the CVVL is removed for access, and not being replaced with a new CVVL assembly.
• Do not disassemble further if the component is removed for access only.
• Components shown inverted for clarity.

Remove and discard the gasket.

8.

CAUTION: Take extra care when handling the component.

NOTE: This step is only required if the CVVL is removed for access, and not being replaced with a new CVVL assembly.

Use the special tool to reset the 8 CVVL brakes.

Special Tool(s): JLR-303-1639

INSTALLATION

1.

CAUTION: Make sure the CVVL assembly is not inverted.

NOTE: Components shown inverted for clarity.

Install a new gasket.

Renew Part: Continuous Variable Valve Lift (CVVL) Assembly Gasket Quantity: 1.

2.

CAUTION: Make sure that the mating surfaces are clean and free from debris and foreign material.

• Inspect the Continuous Variable Valve Lift (CVVL) brake units and make sure they are in the reset position.
• Install the Continuous Variable Valve Lift (CVVL) assembly.
• Install, but do not fully tighten the 8 bolts.

3.

Tighten the 2 bolts in the illustrated sequence until contact between the bolt head and the CVVL assembly has been made, and then further tighten the 2 bolts 2 full revolutions.

4.

Tighten the 2 bolts in the illustrated sequence.

Torque: 6Nm

5.

Remove the special tools.

Special Tool(s): JLR-303-1647

6.

Install, but do not fully tighten the 2 bolts.

7.

Tighten the 10 bolts in the illustrated sequence.

Torque: 12Nm

8. Install the fuel injectors.

9. Connect the startup battery ground cable.

10. Use the approved Jaguar Land Rover diagnostic equipment to complete the CVVL software calibration.

General Equipment: Jaguar Land Rover approved diagnostic equipment

11.

Disconnect the electrical connector from the fuel injector wiring harness.

12.

• Crank the engine for a 10 seconds.
• Allow the starter motor to cool for 5 seconds.
• Repeat this step 4 times until suitable oil pressure is obtained within the CVVL assembly to allow the vehicle to start.

13. Connect the electrical connector to the fuel injector wiring harness.

14. Use the approved Jaguar Land Rover (JLR) diagnostic equipment to read and clear any Diagnostic Trouble Codes (DTCs).

General Equipment: Jaguar Land Rover approved diagnostic equipment

15.

CAUTION: Failure to follow this instruction may result in damage to the vehicle.

Run the engine at idle for 1 minute to allow the correct oil pressure to be obtained within the CVVL assembly.

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