Disassembly
Note. If the components are to be reinstalled, they must be installed in the same positions. Mark the components removed for locations.
Scheme 318
- Remove the 4 bolts and the coolant outlet. Discard the gasket.
- Remove the 2 bolts and the EGR valve. Discard the gasket.
- Remove the Cylinder Head Temperature (CHT) sensor.
- Remove the spark plugs.
- Using the Valve Spring Compressors, compress the valve springs and remove the valve collets, valve spring retainers and the valve springs.
- Inspect the components, if necessary. For additional information, refer to «ENGINE MECHANICAL SYSTEM - GENERAL INFORMATION»(/mercury/mariner/ii-2011-2011/remont/mechanical/#engine-mechanical-system-general-information) article.
- Remove the valves.
- Using the Valve Stem Oil Seal Remover and Slide Hammer, remove and discard the valve seals.
- Inspect the valves. For additional information, refer to «ENGINE MECHANICAL SYSTEM - GENERAL INFORMATION»(/mercury/mariner/ii-2011-2011/remont/mechanical/#engine-mechanical-system-general-information) article. Install new parts, as necessary.