The braking system is the basis for the safety of any car, and the Nissan Almera is no exception. The condition of the rear brake pads directly affects stopping efficiency, fuel consumption and wear of other suspension components. Many sedan owners ignore replacing them until a grinding noise appears, which is a serious mistake that can lead to overheating of the drum and costly repairs.
The procedure for servicing the rear brakes on this model has its own characteristics, especially if we are talking about the drum type brakes, which are often found on basic trim levels. Even with disc brakes at the rear, the principle of operation of the mechanisms requires attention and accuracy. A properly performed replacement will extend the life of your car and provide confidence on the road.
Signs of wear and diagnosis of rear brakes
You can determine the need for replacement not only by mileage, but also by indirect signs. The main indicator is a change in the car's behavior when braking. If you feel vibration on the pedal or steering wheel, or hear a specific grinding noise, it means that the friction layer has already completely worn out.
Often owners Nissan Almera notice that the car begins to pull to the side when you sharply press the pedal. This may indicate uneven pad wear or a seized caliper piston. You should not put off visiting the service or doing the work yourself, as ignoring the problem can lead to damage to the brake disc or drum.
A visual inspection also provides a lot of information. By removing the wheel, you can evaluate the thickness of the friction lining. If it is less than 2-3 millimeters, replacement becomes critical. Also, look for oil stains or traces of brake fluid on the inside of the wheel.
- 🚨 A grinding noise when braking is a sign of complete metal-to-metal wear
- 🚗 Pulling the car to the side indicates an imbalance in the braking force
- 🔧 Vibration of the brake pedal indicates disc deformation or uneven wear
⚠️ Attention: If you hear a metallic grinding sound, operating the vehicle is prohibited until the problem is resolved. This can lead to brake disc failure and loss of control at high speed.
Necessary tools and selection of spare parts
For quality work, you will need a standard set of tools, but some specific keys will significantly speed up the process. Be sure to prepare a jack and reliable stands, as working under the machine with jacks alone is dangerous. Also, don't forget to use a torque wrench to properly tighten the bolts.
When choosing spare parts, it is important to understand the difference between original parts and high-quality analogues. For Nissan Almera brands like TRW, ATE or Brembo, which provide an excellent balance of price and quality. Original parts Nissan (OEM) are also good, but are more expensive and are often sold only in combination with other elements.
In addition to the pads, it is recommended to immediately check the condition of the caliper guides and boots. If they are worn out, replacing the pads alone will not solve the problem, and the brakes will begin to overheat after just a few thousand kilometers. Also check the brake fluid level in the expansion tank.
- 🛠️ Set of socket heads from 10 to 19 mm and wrenches
- 🧴 A can of brake cleaner and silicone grease for the guides
- 🔨 Hammer and screwdriver for removing springs and stoppers (for drum brakes)
- Original Nissan
- TRW/ATE
- Brembo
- Budget analogues
Preparatory work and safety
Before starting work, you must ensure the safety of yourself and your vehicle. Drive the car onto a level surface and apply the handbrake. If you are changing the pads on only one side, place a block under the front wheels to prevent them from rolling.
Remove the wheel and clean the assembly from dirt and dust. Use brake cleaner to wash away dust that may enter your lungs during operation. Allow the assembly to cool if you have recently driven, as overheated components may cause burns.
When unscrewing the fittings or working with the caliper, be extremely careful. Do not allow brake fluid to come into contact with the paintwork of the body, as it will corrode the paint.
⚠️ Attention: Work only with safety glasses and gloves. Brake dust is toxic, and cleaning chemicals can damage the skin and mucous membranes.
Replacement procedure for drum brakes
On many versions Nissan Almera The rear brakes are made in the form of a drum mechanism. This is a reliable design, but it requires more careful disassembly. First you need to remove the brake drum, which may be very tight due to corrosion or wear.
Unscrew the drum guide pins and carefully remove it. If the drum cannot be removed, you can try lightly tapping it with a hammer through a wooden spacer or using special pullers. Do not use excessive force to avoid damaging the threads or the disc itself.
After removing the drum, you will see a mechanism with springs and spacer bars. Carefully remove the springs using special hooks or pliers. Remember the order in which they are installed or take a photo so as not to be confused during assembly. Remove the old pads and compare them with the new ones.
☑️ Preparing drum brakes
Installing new pads is done in the reverse order. Pay special attention to the spacer bar and the gap adjuster. Make sure the adjustment mechanism operates freely and is not jammed. Before installing the drum, check that the new pads are free of burrs and protrude smoothly.
- 🔩 Remove the drum guide pins
- 🔨 Carefully remove the drum without using excessive force
- 🔧 Disconnect the springs and spacer bar, remembering the order
- 🔄 Install new pads and adjust the gap
Common mistakes when disassembling the drum
When removing the drum, the threads of the guide pins often break due to rust. Before unscrewing, be sure to treat them with WD-40 and let them sit for 10-15 minutes. Also be careful with the springs - they can bounce off and get lost in the suspension, so wear glasses and keep the springs under control.
Features of working with disc brakes
If your car has disc brakes, the process will be easier, but will require attention to the condition of the caliper piston. First you need to unscrew the caliper mounting bolts and remove it, hanging it on a wire so as not to damage the brake hose.
Before installing new, thicker pads, it is necessary to push the caliper piston back into the cylinder. To do this, use a special adjustable clamp or pry bar, resting against the old block. The pressure in the system will create resistance, so proceed smoothly.
Check the caliper guides for play and lubricate them with special silicone grease. Try not to use regular oil or Litol, as they can destroy the rubber boots and cause the mechanism to jam. Install new pads and return the caliper to its place.
It is important to ensure that all bolts are tightened to the correct torque. Excessive tightening can break the thread, and insufficient tightening will lead to vibrations and spontaneous unscrewing. Use a torque wrench and refer to the manufacturer's recommendations.
Before recessing the caliper piston, be sure to open the brake fluid reservoir cap. If the reservoir is full, some of the liquid may spill out during the reverse stroke of the piston, staining the body and parts.
Checking and running in after replacement
After completing the work, do not rush to go onto a busy highway. First, press the brake pedal several times until it becomes hard. This is necessary to ensure that the caliper pistons are in the correct position and the pads are pressed against the disc or drum.
For the first 200-300 kilometers after replacement, you should follow a gentle regime. Avoid sudden braking and extreme loads. This is necessary so that the friction material of the pads rubs against the surface of the brake disc, ensuring maximum efficiency.
After break-in, it is recommended to re-check the tightness of the wheel bolts and the condition of the brake system. Make sure there are no extraneous noises, vibrations or burning odors. If everything is in order, you can return to your normal driving style.
Proper break-in of new pads is critical to their longevity and braking performance. Neglecting this step can lead to overheating and warping of the disks in the future.
| Parameter | Value for Nissan Almera | Recommendation |
|---|---|---|
| Pad material | Ceramics or semi-metal | Ceramic for comfort, semi-metal for reliability |
| Wear thickness | Less than 2-3 mm | Immediate replacement is required |
| Wheel bolt tightening torque | 105-110 Nm | Use a torque wrench |
| Brake fluid type | DOT 4 | Replace every 2 years |
| Service life | 40-60 thousand km | Depends on driving style and operating conditions |
⚠️ Attention: Never mix different types of brake fluid. This can lead to a chemical reaction, sludge formation and complete failure of the brake system.
Common mistakes and how to avoid them
Many car owners make the same mistake - installing new pads on worn out discs. This results in the new friction lining not being able to adhere tightly to the surface, and the braking distance increases. Always check the condition of the discs for deep grooves or wear.
Another common problem is improper lubrication of the guides. Using unsuitable lubricants will cause them to swell and jam. This causes constant wheel braking, overheating and rapid wear of the pads. Use only special high-temperature lubricants.
Ignoring springs and retainers can also lead to problems. Old springs lose their elasticity and do not provide a tight fit to the pads, which causes vibration and noise. With each replacement, it is recommended to install new springs and retainers, if they are included in the kit.
- 🚫 Don’t skimp on the quality of guide lubricant
- 🔍 Always check the condition of the discs before installing new pads
- 🛡️ Change springs and clamps along with pads
Why do new pads squeak?
Squeaking in new pads can be caused by several reasons: lack of lubrication on the back of the pad or on the metal base, vibration plates that were not installed, or poor quality material of the pad itself. In most cases, applying a special anti-noise paste to the back and lubricating the contacts helps.
Frequently asked questions (FAQ)
How long does it take to replace rear pads?
On average, it takes an experienced technician from 40 minutes to 1.5 hours to replace the rear pads. If you are doing this for the first time, budget 2-3 hours, as it will take time to study the design, find tools and carefully disassemble.
Is it possible to change the pads on only one side?
It is strictly not recommended to change the pads on only one wheel. This will lead to uneven braking and the vehicle pulling to the side during an emergency stop. Always change pads in pairs on the same axis.
Do I need to change the brake disc along with the pads?
Disc replacement is required only if it is severely worn, has deep grooves or is deformed. If the disc has minimal wear and a smooth surface, simply replacing the pads is enough. Check the disc thickness according to the manual.
How often should you check the condition of your rear pads?
It is recommended to check the condition of the rear brakes at every maintenance (every 10-15 thousand km) or when the first signs of wear appear. This is especially important for drum brakes, as they are more difficult to inspect without disassembly.
What to do if the pads wear out quickly?
Rapid wear can be caused by a seized caliper piston, improper installation, poor quality parts, or aggressive driving style. Check the mechanism for jams and ensure the quality of the installed spare parts.