On ZIL-5301 cars and buses manufactured before 01.09.01, an electric motor 351.5205 and a washer mod. 11.5208 with an electronic control unit mod. BUS 1.92.3761, located in the cabin under the instrument panel on the left side of the driver next to the hood release handle, were installed to drive the windshield wiper.
The unit is equipped with a push-button switch with a position lock to disable the automatic control mode without disrupting the operation of the windshield wiper and washer.
The LED indicator located on its body signals the switchover of the unit to the automated control mode.
The unit has a handle 6, turning it clockwise increases, and counterclockwise decreases the pause in the movement of the windshield wiper.
When the windscreen washer motor is turned on, the unit doses the supply of washer fluid when the wipers move up.
The windscreen wiper and washer are controlled using a combination switch.
The intermittent mode is switched on and the duration of the pauses in the windscreen wiper operation is changed using the right handle of the switch.
The duration of the pauses that can be set is 5, 10, 15 and 20 seconds.
To turn on the intermittent mode, the handle must be moved to position "III". In this case, the minimum pause duration is automatically set to 5 s.
It should be borne in mind that after each movement of the handle to the "III" position, the brushes immediately perform one cleaning cycle, and then - after a pause.
In order to increase the pause duration, it is necessary to briefly, for no more than 2 s, move the handle to the (0) position during the pause, and you can do this several times in a row to obtain the required pause value.
To reset the set pause, you need to move the handle to the "0" position for more than 2 s.
The handle should be switched from the "0" or "III" positions when the brushes have completely stopped in their original position.
If the handle is moved from the "0" or "III" position to a non-fixed position, after releasing it, the brushes will make four strokes and return to their original position.
On cars manufactured after 01.09.01 the electronic control unit PRP2.MS-92.3762 for windshield wiper operation can be installed. This unit is installed on all buses.
In this case, the intermittent mode can be switched on and the duration of the windshield wiper pauses can be changed only by the right handle of the combination switch on the steering column.
The duration of the pauses that the driver can set at his discretion ranges from 3 to 18 sec.
To switch on the intermittent mode, the handle must be moved to the "III" position. In this case, the maximum pause duration is automatically set - 18 sec.
It should be borne in mind that after each movement of the handle to the "III" position, the brushes immediately perform one cleaning cycle, and then - after a pause.
Obtaining a pause of any duration in the range from 3 to 18 sec is performed as follows:
- 1. Move the lever to position "III" (the brushes will immediately perform one cleaning cycle).
- 2. As the glass gets dirty, it is necessary to move the lever to position (for no more than 2 seconds) and immediately return it to position "III" (the brushes will immediately perform one cleaning cycle), and the control unit will remember the time of the between these two brush inclusions and will continue to reproduce it automatically.
- 3. To further reduce the pause, repeat operation 2.
- 4. The duration of pauses is increased after canceling the set pause mode.
To cancel the set pause mode, move the handle to one of the positions "0", "I" or "II" for more than 2 s, and then set the desired pause by performing the operations according to p.p. 1, 2.
The handle should be switched from positions (0) or (III) only when the brushes have completely stopped in their initial position.
When mode "I" is turned on, the windshield wiper operates without pause at low cleaning speed, in mode (II) - at high speed.
When briefly (less than 2 sec) switched on to the non-fixed position "IV", in any current position of the lever, the windshield wiper is switched on for five cycles of the brushes.
In the first two cycles, the windshield is automatically watered with two doses of liquid.
When the lever is held in the non-fixed position "IV" for a long time (more than 2 sec), the dosed watering of the glass occurs automatically with each upward movement of the brushes.