Windshield cleaning system on a car Nissan Almera Classic is a critical safety element, especially in the harsh Russian winter. When wipers stop doing their job, the driver often blames the rubber blades, forgetting about the mechanical part of the drive. In most cases, the problem lies precisely in trapezoid wipers, which wears out over time, loses play or jams due to corrosion.
Ignoring a malfunction of the windshield wiper drive can lead to failure of the electric motor, which will significantly increase the cost of repairs. Nissan Almera Classic It has a fairly simple design of the engine compartment, which makes diagnostics and repairs accessible even to novice car enthusiasts. However, in order to avoid mistakes, it is necessary to clearly understand the principle of operation of the mechanism and the sequence of actions.
In this article we will look in detail at how to identify the fault, dismantle the old mechanism and install a new unit. We will also discuss the nuances of choosing spare parts and common mistakes that craftsmen make during assembly. The right approach to replacing trapezoid will allow you to save significant money and return your car to its former functionality.
Reasons for failure of the windshield wiper mechanism
The main reason for trapezium failure is Nissan Almera Classic is the natural wear of bushings and joints. Over time, the plastic bushings in which the levers rotate wear out and turn into dust. This leads to critical backlash, due to which the trajectory of the brushes is disrupted. Instead of moving smoothly in an arc, the wipers begin to jerk, jump on the glass, or stop in abnormal positions.
The second factor that often destroys the mechanism is the ingress of moisture and dirt into the motor mounting area. In conditions of frequent rains and the use of reagents on the roads, the metal rusts and the lubricant is washed out. If you hear an extraneous creaking or crackling sound when the wipers operate, this is a sure sign that corrosion has already hit the moving joints. In such cases, trying to simply lubricate the assembly often gives only a temporary effect.
It is also worth noting that the electric motor is overloaded. When the brushes freeze to the glass or are contaminated with ice, the motor tries to overcome the resistance, which leads to overheating and deformation of the gears inside the gearbox. Motor overheating is often an effect rather than a cause, but it is what causes the levers to jam. The most common cause of complete system failure on Nissan Almera Classic is jamming of the bushings in the lower part of the trapezoid due to lack of lubrication and abrasive dust.
β οΈ Attention: Do not try to forcefully turn the wiper arms if the motor is not working. This can lead to the plastic gears inside the gearbox breaking off, which will require replacing the entire motor assembly, not just the trapezoid.
Diagnosis of the malfunction and necessary tools
Before proceeding with dismantling, you need to make sure that the problem is really in the mechanical part and not in the electrical part. Turn on the ignition and activate the wiper mode. If you hear the hum of the motor running, but the levers do not move or move jerkily, then the problem is mechanical drive. If the motor is silent, the fuse may have blown or the electric motor itself may be faulty.
For high-quality repairs, you will need a standard set of tools that most car owners have. However, taking into account the specifics Nissan Almera Classic, it is better to have specialized devices on hand. You will need: a set of sockets (including 10 and 12 mm sizes), a flat-head screwdriver to remove the plugs, a 10-mm wrench to remove the lever nuts, and WD-40 for treating soured bolts.
- π§ 10 mm and 12 mm socket for removing fasteners
- π¨ Hammer (preferably with a rubber striker) for knocking out bushings
- 𧴠Lubricant for hinges (lithol or specialized silicone grease)
- π¦ Flashlight for inspecting hard-to-reach places under the hood
The play is checked manually. Open the hood and try to swing the wiper arms from side to side. If the play exceeds 2-3 millimeters, or the levers dangle too freely, trapezoid replacement inevitable. Also pay attention to the condition of the plastic bushings on the axles; if they crumble, they cannot be restored.
- The wipers jerk and squeak
- The motor is humming, but the levers are standing
- Wipers stop in the middle
- The wipers are too slow
Step-by-step instructions for dismantling the unit
You should begin work by removing the plastic covers under the windshield wipers, which protect the mechanism from dirt and water. These covers are attached with plastic clips and sometimes with screws. Carefully pry them up with a flathead screwdriver and remove them to gain access to the arm nuts. Be careful not to scratch the hood or fender paintwork with the tool.
Next, you need to remove the wiper arms themselves. They are attached to the motor shaft splines with a nut. Unscrew the nut, but do not remove the lever immediately. Mark the splines with a marker or chisel so that when assembling, install the lever in correct position. If this is not done, the wipers may stop in the wrong area or hit each other. After making the mark, remove the lever with a sharp but controlled upward movement.
β οΈ Attention: If the lever is too tight, do not hit it directly with a hammer. Use a lever puller or gently rock it, after generously treating the joint with penetrating lubricant.
After removing the levers, unscrew the bolts securing the trapezium itself to the car body. Usually there are three or four. After removing the bolts, you will need to disconnect the electric motor connector and carefully remove the entire assembly from the engine compartment. B Nissan Almera Classic Space is limited, so it is better to remove the trapezoid together with the motor, so as not to damage the wiring.
βοΈ Dismantling the trapezoid
Selection of spare parts and design features
When selecting a new trapezoid for Nissan Almera Classic It is important to understand the difference between original spare parts and analogues. The original, as a rule, has higher quality bushings and precise lever geometry, but costs significantly more. Alternative options from trusted brands may be quite acceptable if you are willing to replace the bushings yourself if necessary. Pay attention to the package: sometimes the trapeze is sold complete with a motor, and sometimes separately.
There are several modifications of trapezoids for this model, depending on the year of manufacture and configuration. It is important to check compatibility using your vehicle's VIN. Incorrectly selected windshield wiper trapezoid may not fit the fastenings or have different brush stroke angles. The most popular manufacturers of analogues are brands from Japan and Korea, offering decent quality at an adequate price.
- β Original (Nissan) - high reliability, precise geometry, high price
- β Japanese analogues (NSK, KYB) - excellent value for money
- β Cheap Chinese analogues often have gaps already when unpacking
If you buy a trapezoid separately, check the condition of the gearbox gears on the old motor. If they are intact, you can move the motor to a new trapezoid, which will save your budget. When purchasing, be sure to check the presence of lubricant in the hinges of the new product. If it is not there, immediately apply a quality one waterproof composition before installation.
| Manufacturer | Part type | Approximate price | Service life |
|---|---|---|---|
| Nissan (Original) | Trapezoid assembly | from 12,000 rub. | 5-7 years |
| NSK | Analog of a trapezoid | from 6,000 rub. | 3-5 years |
| China (No-name) | Cheap analogue | from 2,500 rub. | 1-2 years |
| Korean brands | Enhanced analogue | from 4,500 rub. | 4-5 years |
How to test a motor before purchasing?|If you plan to replace an old motor, connect it directly to the battery (without a trapezoid) and see how the shaft rotates. It should rotate smoothly, without jerking or extraneous sounds. Also check the operation of the limit switches
The motor should stop in the "park" position even if you turn off the power while running.
Installation and configuration of a new mechanism
Installation of a new trapezoid begins with fitting. Insert the assembly into place, but do not tighten the mounting bolts all the way yet. This will allow you to make slight adjustments to the position of the mechanism for optimal performance. Connect the electric motor connector and turn on the wipers for one cycle to make sure that the trapezoid moves freely and does not touch body parts or wiring.
After checking the movement of the mechanism, finally tighten the trapezoid mounting bolts. The tightening torque should be moderate so as not to strip the threads in the body, but sufficient to prevent vibration. Next comes the most crucial moment - installing the levers. The previously applied marks will help you set the levers exactly to the factory position. Place the lever on the splines and tighten the nut to the torque recommended by the manufacturer.
After installing the levers, be sure to check the operation of the wipers in different modes. The brushes should lie flat on the glass and not extend beyond its boundaries. If you see the blades hitting each other or not reaching the edges of the glass, you may need to fine-tune the position of the arms. Correct adjustment guarantees long service life of the new trapezoid and effective glass cleaning.
Correct installation of the levers according to the marks is the key to ensuring that the wipers will park correctly and will not hit each other or the pillars.
Prevention and maintenance of the mechanism
In order for the new trapezoid to last as long as possible, it is necessary to regularly carry out preventive maintenance. Once a season, preferably before the start of winter, clean the mechanism from dirt and apply fresh lubricant to the hinges and bushings. Use special lubricants for plastic and rubber to avoid destruction of materials. Regular machine oil can wash away the factory lubricant and accelerate wear.
It is also important to monitor the condition of your windshield wiper blades. Dull or damaged brushes create increased resistance, forcing the motor to work in extreme mode. Replace brushes every 6-12 months. In winter, before turning on the wipers, always clear the glass of ice and snow to avoid overloading. drive motor.
- π‘οΈ Clean the trapeze from dirt and snow after every winter trip
- π‘οΈ Use winter brushes if the climate in your region is harsh
- π‘οΈ Check the integrity of the rubber seals around the motor
Don't forget about the electrical part. Periodically check the reliability of the contact in the motor power connector. Oxidation of contacts can lead to voltage surges and overheating of the electric motor. If you notice that your wipers are starting to run slower than usual, this could be a sign of contact problems or worn blades.
Before winter use, apply silicone grease to the rubber seals around the trapezoid. This will prevent the arms from freezing to the body and will make them easier to remove if necessary in the future.
FAQ: Frequently asked questions from owners
Is it possible to replace only the bushings and not the entire trapezoid?
This is technically possible if you have the experience and necessary tools to press in new bushings. However, on Nissan Almera Classic The trapezoid is often sold assembled at a reasonable price, and the work of replacing the bushings can be time-consuming and does not guarantee ideal geometry. In most cases, replacing the entire assembly is more economical.
Why doesn't the new motor work with the old trapeze?
If the trapezoid has strong play or deformed arms, it creates excess load on the motor. The new motor may trigger the protection or simply not cope with the resistance. It is also possible that the gearbox gears of the new motor are not compatible with the old trapezoid due to differences in modifications.
How often should the wiper blade be lubricated?
It is recommended to lubricate once a year, before the start of the heating season. Use special lubricants that do not destroy plastic and rubber. If you notice creaking or difficult movement, lubrication should be carried out immediately.
What should I do if the wipers do not stop at the bottom of the glass?
This means that the adjustment of the levers is incorrect or the limit switches inside the motor are faulty. First check the position of the levers relative to the marks. If the problem persists, you may need to replace the motor gearbox or the entire assembly.
Can wipers from other Nissan models be used?
No, trapezoids are for Nissan Almera Classic unique in geometry and fastenings. Using parts from other models (for example, Nissan Tiida or Sunny) is impossible without serious modification of the body and brackets, which is impractical.