The windshield wiper kit consists of a gearmotor (electric motor with gearbox), levers and brushes
The movement of the brushes is parallel.
The electric motor of the cleaner is excited by permanent magnets, three-brush, with two rotation speeds.
To protect the electric motor from overloads when the brushes freeze to the glass or there is high resistance to their movement, a thermobimetallic fuse is installed in the wiper.
To supply washer fluid to the windshield, two washer nozzles are installed on the hood.
The liquid is supplied to them by an electric pump through an elastic tube from the windshield washer reservoir mounted on the right mudguard in the engine compartment.
The pump is installed on the wall of the tank.
You can check the serviceability of the electric windshield washer pump by applying 12 V voltage to its terminals directly from the battery.
The faulty pump must be replaced.
Closed contacts at switch positions and turning on electrical equipment:
Right switch lever position – Closed contact terminals* - Switched electrical equipment
- 1 - 53e—53 - Windshield wiper off
- 2** - 53е—53; 53a - j - Short-term operation of the windshield wiper
- 3 - 53e—53; 53a - j - Intermittent operation of the windshield wiper
- 4** - 53a—53 - 1st speed windshield wiper
- 5 - 53a—53b - 2nd speed windshield wiper
- 6 - 53ah—W - Windshield washer.
- 7 - 53ah—53H - Reserve
- 8** - 53ah—WH; 53аh - 53Н - Reserve
* Pin designations are marked on the switch body.
** Unfixed position.
Possible malfunctions of the windshield wiper
- Cause of malfunction
Remedy
The wiper motor does not work
The bimetallic fuse does not trip and the fuse in the mounting block does not blow:
- The power wires of the gearmotor are damaged, the tips of the wires in the connecting blocks are oxidized
Check the wires, replace damaged ones. Clean the tips
- The wiper switch is damaged
Replace the wiper switch in the steering column switch
- Stuck motor brushes, severe contamination or burning of the commutator
Check, eliminate stuck brushes or replace damaged parts; clean the collector
- Broken wire in the armature winding of the electric motor
Replace the armature or gear motor
The wiper motor does not work
the bimetallic fuse trips, or the fuse in the mounting block blows:
- The levers of the wiper mechanism are deformed and touch body parts
Check, straighten the arms or replace the windshield wiper
- The brushes are frozen to the glass
Separate the brushes from the glass, avoiding damage to the rubber band
- A foreign object has entered the wiper mechanism
Check, remove item
- Short circuit in the armature winding of the electric motor
Replace the gear motor or motor armature
The wiper motor does not work intermittently:
- The wiper switch is damaged
Replace the wiper switch in the steering column switch
- Wiper relay damaged
Replace the relay
The wiper motor does not stop intermittently:
- Wiper relay damaged
Replace the wiper relay
- Poor contact of the limit switch contact petals to the gear motor gear
Fold the contact tabs of the limit switch
- Contamination of the limit switch contacts in the gear motor
Clean the switch contacts
The electric motor of the cleaner works, the brushes do not move:
- Broken gear motor gear teeth
Replace the gear
- Weak fastening of the crank on the axis of the gear motor gear
Check and tighten the crank nut, placing it in its final position