Adjustment device for a motor vehicle headlamp

The adjusting device (9) has a threaded spindle (10) rotated through a bevel gear (11,12) using an operating wheel (13) located outside of the housing. The threaded spindle is in engagement with a spindle nut (19), whose movement is transferred to an adjusting head (20) acting on the pivotable lighting unit. A rocker arm (30) is pivoted around a pivoting axis (s), which is in the driving connection with the spindle nut through a hinge connection (28,29). The rocker arm is supported by the stub shafts (31) in two opposite slots (32) of an inner casing section (I).