Motorized headlight cleaners are available in a non-separable design. Therefore, they cannot be repaired and, in case of failure, must be replaced with new ones.
The headlight washer pump with electric motor is the same as that of the windshield washer.
The scheme of inclusion of cleaners and a headlight washer is shown in fig. 7-36. They are switched on only when the headlights are on with the right lever of the three-lever switch 7, i.e. simultaneously with the windshield wiper being turned on. In this case, voltage is applied to the winding of the auxiliary relay 3. It works, and if the contact «30» relay energized by outdoor light switch (i.e. headlights on), then through the closed relay contacts voltage is supplied to the headlight cleaners 1 and to the headlight washer motor 2.
Pic. 7-36. Scheme of switching on cleaners and headlight washer:
1 - headlight cleaners; 2 - headlight washer motor; 3 - relay for turning on cleaners and headlight washer; 4 - additional fuse box; 5 - headlight switch; 6 - outdoor lighting switch; 7 - windshield washer switch, as well as cleaners and headlight washer; 8 - fuse block; 9 - ignition switch.
At the headlight cleaner, the number of double strokes of the gearmotor shaft at a torque load of 0.49 Nm (0.05 kgf·m), supply voltage 12 V and ambient temperature (25±10) °С should be 45-60 min-1, and the current consumption is not more than 1.5 A.