Operation Nissan Almera Classic Over time, it inevitably leads to wear and tear of components responsible for traffic safety. The rear brake system, which is a drum structure, requires regular attention, since this is where friction products accumulate and corrosion of metal elements occurs. Ignoring the symptoms of a malfunction can lead to reduced braking efficiency or jamming of the mechanism, which poses a direct threat to the lives of the driver and passengers.
If you notice squeaks, the steering wheel wobbles when you press the pedal, or uneven wear of the brake pads, it is necessary to urgently carry out diagnostics. In most cases, the problem is solved by replacing rear brake repair kit, which includes all the necessary springs, brackets and guides. High-quality repairs can return your car to factory braking characteristics and extend the life of expensive brake drums and discs.
Design features of the Almera Classic drum system
Rear axle Nissan Almera Classic equipped with drum brakes, which, despite their apparent simplicity, have a number of unique engineering solutions. The basis of the mechanism is a cast iron drum, inside of which there are two brake pads with asbestos-containing or ceramic friction lining. The operation of the node is controlled master brake cylinder, transmitting pressure through the hydraulic system, and an auxiliary handbrake mechanism.
A special feature of this model is the presence of a self-regulating device that compensates for the wear of the friction linings as they wear out. This mechanism often causes problems as it can rust or jam if not regularly maintained. Understanding the working principle brake drive necessary for correct diagnosis and subsequent assembly of the unit to avoid distortions and uneven fit of the pads.
Why is replacing a repair kit inevitable during repairs?
Many car owners make the mistake of replacing only the brake pads, leaving the old set of springs and retainers. Over time, metal fittings lose their elasticity, become corroded and change geometry. Return springs stretch, which leads to poor removal of the pads from the drum and their constant friction, causing overheating and rapid wear.
The repair kit includes not only springs, but also a spacer bar, stops, wedges and guide pins. These parts are subject to extreme temperatures and mechanical stress. If you find that the pads are knocking or the braking distance has increased, check the condition fixing brackets. Their deformation often leads to the block not being centered in the drum, causing a characteristic hum when moving.
⚠️ Attention: The use of old springs from the repair kit, even if they are visually intact, is strictly prohibited. Metal fatigue is not visible to the eye, but it guarantees rapid re-stretching and failure of the brake system in the near future.
Manufacturer's choice: original or high-quality analogue
The spare parts market offers a huge selection of options, from cheap Chinese kits to expensive European brands. For Nissan Almera Classic It is critical to choose a kit where the metal has an anti-corrosion coating and the springs are made of high-strength steel. Original Nissan are often prohibitively expensive and may not be available in stock, so many experts recommend proven alternatives.
It is worth paying attention to brands specializing in brake systems, such as TRW, ATE, Remsa or Textar. These manufacturers guarantee exact dimensions and compliance with the technical specifications laid down by the car's designers. Savings at this stage may result in the need to re-disassemble the unit after a couple of thousand kilometers.
- TRW — German quality, excellent spring geometry and reliable clamps.
- Remsa is a Spanish brand that offers excellent value for money for Japanese cars.
- ATE - premium segment, ensures maximum smooth operation of the brakes.
- Racks - a budget option, but requires careful checking when purchasing to ensure that it is not defective.
- Original Nissan
- Premium brands (ATE, TRW)
- Middle segment (Remsa, Textar)
- Budget analogues
Preparatory stage and necessary tools
Before starting work, it is necessary to ensure safety and prepare the workplace. The car must be installed on a flat surface, preferably on an overpass or inspection hole, since access to the rear wheels from below is difficult. Be sure to apply the handbrake and block the front wheels with wheel chocks to prevent the machine from moving.
To carry out high-quality repairs, you will need a set of specialized tools. Without it, the procedure may be delayed or lead to damage to parts. Make sure you have a jack, trestle stands, a set of wrenches and sockets, and spring removal pliers.
- Spring removal pliers - a mandatory tool for the safe dismantling of elastic elements.
- Copper grease — necessary for processing guide pins and metal-to-metal contact points.
- Brake fluid — for topping up the tank if it is necessary to pump the system.
- Metal brush — to clean the seats from dirt and rust before installing a new kit.
☑️ Preparing to replace brakes
Step-by-step instructions for replacing the repair kit
The replacement process begins with removing the wheel and brake drum. If the drum cannot be removed by hand, use a puller or gently tap the inside of the disc with a hammer through a wooden spacer. After removing the drum, you will have access to the inside of the mechanism, where all the elements are located brake system.
The next stage is disassembling the unit. First remove the lower spring using pliers, then remove the upper spring. Be careful as the springs are under tension and may fly out. After removing the springs, remove the spacer bar and the slack adjuster mechanism. Now you can remove the brake pads themselves by disconnecting them from the handbrake lever.
Clean all seats on the base plate of old grease and rust. Apply a thin layer of copper grease to the pad contact points and to the pins. Install the new parts in reverse order, making sure the springs are engaged correctly and not twisted. Pay special attention hand brake mechanismso that the cable moves freely and does not create unnecessary tension.
After assembly, place the drum in place and secure it. Put the wheel on and lower the car. Before starting to move, be sure to press the brake pedal several times so that the cylinder pistons reach their stroke and the pads are pressed against the drum. Test your braking performance on a safe section of the road.
What to do if the drum cannot be removed?
Often the drum sticks to the hub due to corrosion. Try applying a penetrating lubricant (such as WD-40) to the contact areas and leave for 15-20 minutes. If this does not help, use a puller or gently tap the inside of the drum with a rubber mallet, alternating blows. Never hit the outer edge as this may cause a crack.
⚠️ Attention: When assembling the handbrake mechanism, make sure that the lever on the shoe is securely latched onto the cable. If the cable becomes disengaged after assembly, the handbrake will stop working, which is unacceptable.
Typical repair mistakes and their consequences
One of the most common mistakes is incorrect installation of the spacer bar. It has different lengths on both sides, and if you mix them up, you will disrupt the operation of the self-regulator. This will result in the pads either not reaching the drum or constantly rubbing against it. It is also important to correctly orient the pads: the front and rear differ in shape and size.
Ignoring the condition of the brake cylinder can also be a problem. If the cylinder pistons do not move freely or traces of fluid leaks are visible, replacing the repair kit alone will not solve the problem. In this case it is necessary to replace brake slave cylinder entirely, since repairing the pistons is often a temporary solution.
| element | Signs of wear | Recommendation |
|---|---|---|
| Return springs | Stretched, lost elasticity | Replacement with new ones from the repair kit |
| Guide pins | Corrosion, scuffing | Cleaning and lubrication or replacement |
| Spacer bar | Deformation, thread wear | Replacement (often included) |
| Brake cylinder | Leaks, jamming | Complete replacement of the unit |
Before installing new pads, be sure to check the inside surface of the brake drum. If it has deep grooves or signs of overheating (blue tint), it must be ground or replaced, otherwise the new pads will quickly wear out.
Diagnostics and testing after installation
After completion of work, carry out a thorough inspection. Make sure that the brake pedal does not sink and has a clear stop. When driving at low speed, listen for any unusual noises or grinding sounds. If you hear a knocking noise, the springs may be installed incorrectly or the pads may have play.
Check the operation of the handbrake. The lever must rise with a certain force and hold the car on the slope. The number of clicks when lifting the lever should be within the normal range (usually from 3 to 5). If the lever lifts too easily or too tightly, the cable or mechanism inside the drum will need to be adjusted.
For the first 100-200 kilometers after replacement, avoid sudden braking. This is necessary so that the new pads get used to the drum and take its shape. Perfect fit friction linings ensure maximum braking efficiency and prevent steering wheel wobble during an emergency stop.
Regularly checking the condition of the rear brakes and timely replacement of the repair kit is the key to safety and the absence of problems with the braking system in the future.
FAQ: Frequently asked questions
How often do you need to change the rear brake repair kit?
The replacement interval depends on driving style and operating conditions. On average, springs and clamps last about 60-80 thousand kilometers, but with active driving or operation in off-road conditions, wear may occur earlier. It is recommended to check the condition of the mechanism every time the pads are replaced.
Is it possible to change the repair kit on only one side?
Strongly not recommended. Braking forces must be balanced on both axles. Replacing only one side will lead to the car skidding when braking and uneven wear of parts. Always change the repair kit in pairs on the same axis.
What should I do if my brakes squeak after replacing them?
The squeaking noise can be caused by improperly installed pads, lack of lubrication at the metal-to-metal contact points, or dirt ingress. Check that the front and rear pads are not mixed up and make sure that all friction points are lubricated with special high-temperature grease.
Do I need to bleed the brakes after replacing the repair kit?
If you have not opened the hydraulic system or unscrewed the tubes, bleeding is not required. However, if you have replaced the brake wheel cylinder, bleeding the system is required to remove air from the circuit.
How to distinguish an original repair kit from a fake?
The original has high quality packaging with clear printing and Nissan logos. Metal parts are covered with a protective layer, the springs are smooth and elastic. Counterfeits often have uneven paint, rust already in the package, and are lighter in weight due to the savings in material.