PRE-RELEASE
Valve clearance check and adjustment, Z19DT
| Valve clearance check and adjustment, Z19DT |
| 1. |
Remove the upper engine cover.
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| 2. |
Unplug the connector from the mass air flow sensor.
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| 3. |
Remove the hose from the mass air flow sensor and the intake manifold.
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| 4. |
Remove the air cleaner casing.
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| 5. |
Detach the vacuum pipe from the camshaft cover.
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| 6. |
Detach the crankcase ventilation hoses from the camshaft cover.
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| 7. |
Remove the camshaft cover.
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| 8. |
Turn over the engine using a ratchet spanner on the crankshaft and check the valve clearance when the camshaft lobe is pointing up (180° from the valve stem) using a feeler gauge.
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| 9. |
Measure and note the valve clearance of all valves in the same way.
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| 10. |
The valve clearance must be adjusted if outside tolerances.
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| 11. |
Adjust the valve clearance by changing the valve adjusting washers to the right thickness.
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| 12. |
Make sure the camshaft lobe is pointing up (180° from the valve stem) and use
32 025 035 Valve compressor
to carefully press down the valve tappet.
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| 13. |
Secure the valve tappet using
32 025 036 Valve fixing tool
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| 14. |
Remove the valve adjusting washer with two small screwdrivers. Measure with a micrometer or read off the thickness of the washer (the bottom of the washers are marked).
Example: Valve clearance is 0.1 mm too small, fit washer that is 0.1 mm thinner. Valve clearance is 0.1 mm too large, fit washer that is 0.1 mm thicker. 
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| 15. |
Fit new washers with right thickness, turn the washer with the marking on the bottom, press down carefully with the valve compressor and remove the special tool.
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| 16. |
Turn over the engine so that the camshaft revolves a whole turn and check that the valve clearance is correct.
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| 17. |
Fit the camshaft cover with a new gasket.
Tightening torque 9 Nm (7 lbf ft). 
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| 18. |
Fit the crankcase ventilation hoses with clips to the camshaft cover.
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| 19. |
Fit the vacuum pipe.
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| 20. |
Fit the air filter housing.
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| 21. |
Fit the hose to the mass air flow sensor and the intake manifold.
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| 22. |
Plug in the connector to the mass air flow sensor.
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| 23. |
Fit the upper engine cover.
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