Adjusting of valves ( Type 1 ) z Adjusting of valves ( Type 2 ) Adjusting of the valve overlapping on cylinder is done as follow. DL06 Diesel Engine Technical Information 38 Cylinder no. Valve adjusting 1 2 3 4 5 6 Exhaust Intake Exhaust Intake Exhaust Intake Exhaust Intake Exhaust Intake Exhaust Intake #1 cylinder top dead center (#6 cylinder valve overlap) ● ● ● Add 180° rotation ◎ ◎ ◎ Add 180° rotation ○ ○ ○ Add 180° rotation ◈ ◈ ◈ When each cylinder is valve overlap (Firing cylinder no. order) 1 5 3 6 2 4 Valve adjusting cylinder No 6 2 4 1 5 3