1 - 20 Nm + turn an additional 1/4 turn (90°), replace; 2 - Rocker arm support, with rocker arms; 3 - Lock nut, 30 Nm; 4 - Set screw, when installing a new pump-injector unit and if signs of wear appear, replace it, lubricate the contact surface with the ball joint of the pump-injector unit with grease -G 000 100-; 5 - Ball joint, replace; 6 - Pump-injector unit, check the wear of the ball joint and, if necessary, replace it, lubricate the contact surface with the adjusting screw with grease -G 000 100-; 7 - O-ring seal, replace; 8 - O-ring; 9 - O-ring seal, replace; 10 - Heat-insulating sealing ring, replace; 11 - Retaining ring; 12 - Cylinder head; 13 - Tension cracker; 14 -12 Nm + turn an additional 3/4 turn (270°), replace