The ignition module shall be removed to ensure access to the casing. Then, release the retainer, disconnect the sensor wiring of the distribution shaft position, the oil emergency pressure, the coolant temperature sensor. With the valve cover removed, remove the wire holder on the latch. The next step is to disconnect the crankcase ventilation hose. It is also necessary to remove the cooling-liquid pipe to the throttle, without forgetting the anchorage point on the rear of the engine. In addition, the coolant hose must be removed from the lid of the HBCD.
You are now ready to unwind the hinges of the top of the cylinder head cover. The lining is removed, the cover surface and the block head are cleared, new gaskets are placed and the assembly is reassembled in the reverse order.