To remove the
Timing Belt upper covers, you should first remove both the inner and outer covers. Around the base of the control valve, clean the area to avoid dirt or debris entering the valve ports before removal. Disconnect the wiring connector of the control valve, and then undo the four bolts for installing the valve to remove the valve, being prepared for some oil spillage. Recover the gasket from the cylinder head surface as this new one will be needed for refitting and be sure to keep any contaminated oil or dirt out of the valve block or engine ports during this process. For refitting, clean the gasket surfaces of both engine and valve and fit a new gasket. Reconnect the valve and adjust the four mounting bolts evenly to the specified torque and then reconnect the wiring plug to the valve. Check the engine oil level and top it up if necessary, and if desired run the engine before refitting the timing belt covers to check for any signs of oil leaks in order to ensure that loose clothing is kept clear of the timing belt and sprockets. Finally, reinstall the timing belt covers.