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Exhaust valve, Z19DTH

Exhaust valve, Z19DTH

To remove


1. Remove the cylinder head. See Cylinder head in situ, Z19DTH

2. Remove the camshaft housing from the cylinder head.

3. Place the cylinder head in a vice.

4. Remove the hydraulic valve tappets.

5. Remove the thermostat with gasket.

6. Remove the coolant pump with gasket.

7. Remove the valve cone using a magnet.

8. Remove the upper valve shim, valve spring and extra valve shim (exhaust valve only).

9. Remove the valve seal with the assembled lower valve shim.

10. Remove the valve.

11. Repeat the procedure for the other valves.


To fit


1. Clean the sealing surface from gasket residue.

2. Check that the valves show no signs of damage or that they can stick.

3. Fit the valves in their seats.

4. Fit the valve seals using the tool 83 94 157 Pliers, valve guide seal

5. Fit the lower shims (exhaust valve only).

6. Fit the valve springs and the upper shims.

7. Fit the valve cone using the tool EN-46117 Fitting tool .

Fit the coolant pump with gasket.

Tightening torque 20 Nm (15 lbf ft).

8. Fit the thermostat housing with gasket.

Tightening torque 8 Nm (6 lbf ft)

9. Fit the hydraulic valve tappets.

10. Place the cylinder head in a vice.

11. Fit the camshaft housing.

12. Fit the cylinder head. See Cylinder head in situ, Z19DTH