Removal and Replacement

Valve Springs









Removal

NOTICE: During engine repair procedures, cleanliness is extremely important. Any foreign material, including any material created while cleaning gasket surfaces, that enters the oil passages, coolant passages or the oil pan can cause engine failure.

1. With the vehicle in NEUTRAL, position it on a hoist.

2. Remove the camshafts. For additional information, refer to Camshafts Removal and Replacement.

3. Remove the ignition coil.

4. Remove the 2 bolts and the LH engine lift eye.





5. NOTE: If the camshafts and valve tappets are to be reused, mark the location of the valve tappets to make sure they are assembled in their original positions.

NOTE: The number on the valve tappets only reflects the digits that follow the decimal. For example, a tappet with the number 0.650 has the thickness of 3.650 mm.

Remove and inspect the valve tappets.





6. NOTICE: Only use hand tools when removing or installing the spark plugs, or damage can occur to the cylinder head or spark plug.

NOTE: Use compressed air to remove any foreign material in the spark plug well before removing the spark plugs.
Remove the 4 spark plugs.


7. NOTICE: Use compressed air at 7 to 10 bars (100-150 psi). Do not disconnect the compressed air from the cylinder until the valve spring, valve spring retainer and valve collet is installed. Any loss of air pressure will allow the valve to fall into the cylinder.

Connect the compressed air supply to the No. 1 cylinder.


8. NOTE: Place all parts in order to one side.
Apply compressed air to the cylinder and remove the valve spring.

- Using the Valve Spring Compressors, compress the valve spring and remove the valve collet, using some multi-purpose grease and a small screwdriver.

- Remove the valve spring retainer and the valve spring.






9. Repeat the appropriate removal steps for all of the other cylinders.

Installation

1. NOTE: Check the seating of the valve collet.
Using the Valve Spring Compressors, install the valve spring.

- Insert the valve spring and the valve spring retainer.

- Compress the valve spring and install the valve collet using some multi-purpose grease and a small screwdriver.






2. Disconnect the compressed air supply.

3. Repeat the appropriate installation steps for all of the other cylinders.

4. NOTICE: Only use hand tools when removing or installing the spark plugs, or damage can occur to the cylinder head or spark plug.

Install the 4 spark plugs.
- Tighten to 15 Nm (133 lb-in).


5. Coat the valve tappets with clean engine oil and install them in the cylinder head in their original position.





6. Install the camshafts. For additional information, refer to Camshafts Removal and Replacement.

7. Install the LH engine lift eye and the 2 bolts.
- Tighten to 19 Nm (168 lb-in).






8. Install the ignition coil.