7.7.1. Maintenance

Service of devices of lighting and the alarm system consists in regular check of their working capacity, adjustment of head and fog lights, replacement of the failed lamps and the relay, understeering switches and a cleaner of headlights, and also in check and adjustment of a sound signal.

Prevention
Daily before departure check operability of devices of lighting and the light alarm system, eliminate the found malfunctions. Replace lamps with the darkened flasks, without waiting for their burn-out.

Regulate head headlights in the following sequence:

Fig. 295. A screen marking for adjustment of headlights: N – distance of the center of headlights from earth level; V–V – a projection of a longitudinal axis of the car; A–A, B–B – axes of the centers of headlights


1. Install completely filled and equipped car with the normal pressure of air in tires and load of a seat of the driver of 750 N (75 kgfs) on the flat horizontal platform at distance of 5 m from the screen with a special marking (fig. 295).
2. Install the handle of the hydroproofreader of headlights on dashboards in the situation corresponding to car loading with one driver.

Fig. 296. Head headlight and cleaner of headlights: 1 – the screw of adjustment of a light bunch in the vertical plane; 2 – the screw of adjustment of a light bunch in the horizontal plane; 3 – motor-reducer; 4 – the lever with a brush; 5 – protective cap; 6 – lead; 7 – adjusting pin; 8, 10, 12 – nuts; 9, 11,
13 – washers; 14 – radiator frame panel


3. Turn on passing beam of headlights and, serially closing each headlight, rotation of adjusting screws 1 and 2 (fig. 296) achieve that light-and-shade border to the left of points of E and E'
(see fig. 295) coincided with the line 1, and on the right – with lines 2 and 2' for the left and right headlights respectively. Points of a change of light-and-shade border have to coincide with points of E and E'.
If it is not possible to adjust headlights, then it is necessary to check efficiency of the hydroproofreader.
For check of efficiency of the hydroproofreader it is necessary to remove executive cylinders of the hydroproofreader from headlights and to check the working course of rods which has to be equal (10,8±0,5) mm at turn of the handle of the hydroproofreader from "zero" situation counterclockwise against the stop.
The hydroproofreader's design non-demountable and in case of damage he is replaced assembled with cylinders and tubes.
 For replacement of the hydroproofreader disconnect collars of fastening of tubes to plaits of wires. Remove the handle from the main cylinder and turn off a nut of its fastening to a scale. Disconnect executive cylinders from headlights and push them with a sealant in interior of the car. The new hydroproofreader establish upside-down.
 For replacement of lamps of near and far light in head headlights turn a headlight casing against the stop counterclockwise and remove it. Remove a block from output probes of a lamp, bring short moustaches of a spring latch out of grooves and take out a lamp. It is necessary to establish a new lamp in gloves, without concerning a lamp flask in order to avoid fatty traces from fingers. Traces on a lamp are removed alcohol. Fatty traces lead to darkening of a flask and a bystry exit of a lamp out of operation.
 For replacement of a lamp of a forward marker light in a head headlight turn a headlight casing against the stop counterclockwise and remove it. Take out a cartridge with a lamp from the rubber plug on a headlight reflector. Easily pressing a lamp, turn it counterclockwise and take out from the boss.

Fig. 297. A screen marking for adjustment of fog lights: N – distance of the center of headlights from earth level; V–V – a projection of a longitudinal axis of the car; A–A, B–B – axes of the centers of headlights


 For adjustment of fog lights weaken nuts of fastening of an arm of a headlight and, turning the headlight case in the horizontal and vertical planes, establish a headlight in situation at which the light-and-shade border coincides with the line 1 (fig. 297), and in this situation tighten nuts.
 For replacement of lamps of fog lights with rotation counterclockwise turn off a back cover of a headlight and take out a lamp. It is necessary to establish a new lamp in gloves, without concerning a lamp flask in order to avoid bystry burn-out of a lamp.
 For replacement of a lamp in the forward index of turn remove a protective rubber cover from a cover of the boss of a lamp. Turn a cover of the boss of a lamp counterclockwise and take out a cartridge with a lamp from a nest. Easily pressing a lamp, turn it counterclockwise and take out from the boss.
 For replacement of a lamp in the side index of turn remove a protective cover from the inside of a forward wing, having delayed it back; turn a cartridge on 90 ° counterclockwise and take out it with a lamp assembled.
 For replacement of lamps in a back lamp uncover the hatch of a back lamp, having unscrewed two screws of fastening. Turn a cover of the boss of a lamp which is subject to replacement, counterclockwise and take out a cartridge with a lamp from a nest. Easily pressing a lamp, turn it counterclockwise and take out from the boss.
 For replacement of lamps in a lamp of an additional signal of braking unscrew two screws of fastening of a back cover of a lamp, having undertaken a back cover; take out outside an internal part of a lamp and replace a lamp.
 For replacement of lamps in a lamp of illumination of registration plate unscrew screws of fastening of a lamp to the back door handle. Take out a lamp outside, wring out a latch, remove the lens and replace a lamp.
 For replacement of a lamp in a plafond of internal illumination of salon slightly wring out a case wall in its central part so that to release the fixing ledge on the lens, remove the lens, replace a lamp.
 For replacement of a lamp in a plafond of individual lighting remove a plafond, having hooked it from the outer side the screw-driver, and take out from it a cartridge with a lamp. Easily pressing a lamp, turn it counterclockwise and take out from the boss.
 For replacement of the lighting lamp of a ware box slightly press a lamp, turn it counterclockwise and take out from the boss.
 For replacement of a lamp in a plafond of illumination of the assembly block remove the overlay of the dashboard located under a steering column and take out a lamp.
 For replacement of a podkapotny lamp slightly press it, turn a lamp counterclockwise and take out from the boss.

Understeering switch
Consists of a connector and two switches. The left switch includes indexes of turn, switches light of headlights, right operates work of washers and cleaners of glasses and headlights. Switches are fixed in a connector by two spring latches. For replacement of the faulty switch (right or left) it is necessary to remove a facing casing of understeering switches, to squeeze latches of the switch and to take out it from a connector, previously having disconnected blocks of a plait of wires.

Fig. 9. A steering column with a steering wheel, multipurpose understeering switches and the switch of ignition (the switch of launch of the engine)


Provisions of levers of switches are shown in fig. 9, and the contacts closed at the same time in tab. 27.

Relay of inclusion of headlights

Fig. 268. Assembly block: K1 – crossing points; K2 – the screen wiper relay breaker; K3 – the relay breaker of indexes of turn; K4 – the relay of inclusion of passing beam of headlights; K5 – the relay of inclusion of driving beam of headlights; K6 – the additional (unloading) relay; K7 – the relay of inclusion of heating of back glass;
K8 – the relay of inclusion of fog lights; F1–F23 – fuses (see tab. 20)


K4, K5, K8 relays (see fig. 268) 904.3747-10, installed in the assembly block are used to inclusion of head and fog lights.
Tension of turning on of the relay at a temperature (23±5) °C no more than 8 V, resistance of a winding (85±8,5) Ohms.

Relay breaker of indexes of turn and alarm system
The relay breaker of indexes of the turn K3 (see fig. 268) 493.3747 is installed in the assembly block. It serves for creation of a faltering signal of indexes of turn both in the mode of the alarm system, and in the mode of indexes of turn. Besides, the relay allows to control serviceability of lamps of indexes of turn. So, if one of lamps of indexes of turn fuses, then the frequency of inclusion and switching off of indexes of turn increases.
Has to provide to the relay breaker a blinking of lamps of indexes of turn with a frequency (90±30) cycles in a minute at a surrounding temperature from-40 to +65 °C and tension from 10,8 to 15 Century.

Sound signal
On cars the sound signal 20.3721-01 is established.
Possible causes of defect of a sound signal: the safety lock fused, the inclusion button on a steering wheel, bad contact on a tokosjemny ring of a steering wheel or malfunction of the most sound signal does not work or jams.
For failure detection it is necessary to check reliability of connection of wires, a condition of contacts. If necessary smooth out contacts.
If in use force of sounding of a signal decreases or will worsen purity of a sound, adjust a signal turn of the adjusting screw on a back cover of a signal in this or that party before receiving a loud and pure sound. If adjustment does not yield desirable result or the signal works falteringly, sort a signal and smooth out contacts of the breaker.

Cleaner of headlights
On cars cleaners of headlights can be established.

Fig. 298. Scheme of inclusion of a cleaner and washer of headlights: 1 – motor-reducers of cleaners of headlights; 2 – relay of a faroochistitel; 3 – electric pump; 4 – understeering switch


The scheme of inclusion of a cleaner of headlights is provided on fig. 298.
The cleaner and washer of headlights join the understeering switch 4 (position of the lever VI see in tab. 27) at the turned-on light of head headlights.
In a motor compartment on a board of a front the relay 2 (see fig. 298) inclusions of a cleaner of headlights is installed. Relay 90.3747-01 type.
Tension of turning on of the relay at a temperature (23±5) °C no more than 8 V, resistance of a winding (85±8,5) Ohms.
The brush cleaner of headlights consists of two motor-reducers (right and left), two levers with brushes (right and left) and two leads.
Motor-reducers install on a car body from a motor compartment on radiator frame panels (see fig. 296). Fastening – a nut with a washer. From the outer side of the car the motor-reducer is covered with facing of a radiator.
Levers with brushes fasten on axes of leads which are established for the weekend shaft of motor-reducers.
Motor-reducers are issued in non-demountable execution and are not subject to repair.
The non-working (park) provision of brushes of a faroochistitel – lower.

Data for check of a motor-reducer of a cleaner of headlights
Rated voltage..... 12 V
Angle of rotation of an output shaft of a motor-reducer..... (45±1) °
Number of the double courses:
 at loading control moment of 0,49 N · m..... 45–60 min.-1, the consumed current no more than 1,5 And
 idling..... 50–60 min.-1, the consumed current no more than 0,6 And