Land Rover Defender: Valves

REMOVAL AND INSTALLATION

SPECIAL TOOL(S)

303-252

Compressor, Valve Spring

GENERAL EQUIPMENT

PART(S)

REMOVAL

WARNINGS:

• If the vehicle has been powered down, do not power up the vehicle until all the bonding points have been tested.
• It is the responsibility of the Electric Vehicle Senior Authorised Person (EVSAP) to make sure they comply with any local legislation for work on High Voltages (HV).
• The approved Personal Protection Equipment (PPE) must be worn where indicated within this procedure and not removed unless indicated within a step. All items of PPE must be checked for signs of damage before each use, if damaged, replacement PPE must be obtained before doing this procedure.

NOTES:

• All Permit To Work (PTW) documents must be kept for a minimum of 5 years.
• 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.

WARNING: Jaguar Land Rover (JLR) Electric Vehicle Competent Person (EVCP) trained technicians only.

This procedure involves work on components associated with the High Voltage (HV) system. Only technicians qualified to Electric Vehicle Competent Person (EVCP) level or higher are allowed to do this procedure. It is mandated that all technicians involved with the steps in this procedure have read and understood the Electric Vehicle (EV) Safety Rules.

2. Raise and support the vehicle on a suitable 2 post lift.

3.

Power Down the High Voltage (HV) system. Only technicians qualified to EVAP level are allowed to perform this procedure. It is mandated that all technicians involved with the steps in this procedure have read and understood the Electric Vehicle Safety Rules.

4. Remove the cylinder head.

5.

Position the special tools as illustrated.

Special Tool(s): 303-252

6.

Tighten the special tool until the valve spring retaining collets can be removed.

7. Remove the special tool.

8.

Remove the valve spring and cap.

9.

Remove and inspect the valve.

10.

Remove and discard the valve stem seal.

11. Repeat the removal procedure for the remaining valves.

INSTALLATION

1.

1. Apply a small amount of fine grinding paste to the face of the valve.
2. Install the valve into the cylinder head valve guide.
3. Using a suitable tool, lap in the valve until a continuous mark is visible on both the valve and the valve seat.
4. Remove the valve and clean off all the grinding paste from the valve and the valve seat.

2. Install a new valve stem seal.

3. Lubricate the valve stem with clean engine oil.

4. Install the valve into the cylinder head valve guide.

5. Install the valve spring and cap.

6. Using the special tool, install the valve spring retaining collets.

7. Repeat the installation procedure for the remaining valves.

8. Install the cylinder head.

9.

Power Up the High Voltage (HV) system. Only technicians qualified to EVAP level are allowed to perform this procedure. It is mandated that all technicians involved with the steps in this procedure have read and understood the Electric Vehicle Safety Rules.

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