Coolant drained. Air filter housing, heat exchanger and coolant pump with spacer (D1-13) removed.
Remove the screw (1) which holds the fuel filter bracket to the cylinder head. Unscrew the valve cover. Undo the cable (2) for the glow plugs.
Undo and remove the injector pipes (1). Undo and remove the return fuel pipe (2). IMPORTANT! Seal all openings in the fuel system with protective caps. Undo the oil supply pipe (1) by the cylinder head. Unscrew the injectors (2). IMPORTANT! Seal all openings on the injectors with protective caps. Unscrew the nuts (3) which hold the rocker arm bridge. The D1-20, D1-30 and D2-40 engines also have screws which must be undone. Carefully prise the rocker arm bridge loose. Remove the push rods (1) and valve caps (2). Mark them. Undo the cylinder head screws (3) in the opposite sequence to when they are tightened, please refer toTechnical Data. Remove the cylinder head and gasket.