Emission - oxygen sensor control, EGR, exhaust, M110 Removal and installation of air pump 14-250 Removal and installation of air pump Federal and California version model year 1977/78/79 Removal 1 Loosen fastening screw (1) and screw out. 2 Swivel air pump inwards and remove V-belt. 3 Compress hose clamp (arrow) on contour hose with combination pliers and push approx. 2 cm to the rear. 4 Pull contour hose from air pump connection. 5 Loosen fastening screw (2) and unscrew, remove air pump in downward direction. Installation 6 For installation proceed vice versa. Note: V-belt is correctly tensioned if it will resiliently yield under energetic thumb pressure. 14.2-250/1 USA 1977/78/79 F2 Poprzedni Removal and installation of catalyst Nowsze Removal and installation of anti-backfire valve