A complete guide to servicing Nissan Almera rear brakes

Rear brakes on Nissan Almera often become the object of close attention of car owners, especially taking into account the design features of this model. Unlike the front wheels, where load and wear occur constantly, the rear axle on the G15 and N16 series sedans operates in a more gentle mode, but this is what often leads to problems during long-term use. Many drivers forget about the need for regular diagnostics, which ultimately results in jamming of mechanisms or corrosion of guides.

Understanding the working principle brake caliper and disk system avoids costly repairs in the future. If you notice a squeaking sound, a beating pedal, or uneven tire wear on the rear wheels, this is a signal for immediate action. Ignoring these signs can lead to complete failure. brake discs or even a fire due to overheating of a jammed mechanism.

Design features of the rear brake system

Rear brake system Nissan Almera (especially in the G15 body) has its own unique features that distinguish it from its competitors. Here we apply the classic disc brake system, but with an important nuance: a drum mechanism for the hand brake (parking brake) is often built inside the rear caliper hub. This solution saves space and simplifies the design, but it also creates additional difficulties during maintenance.

You need to understand that this hybrid of disc and drum elements requires a special approach to adjustment. Corrosion of caliper guide pins is a common problem as they are exposed to moisture and chemicals that enter the narrow space between the disc and the hub. Corrosion of guides often results in the pads not moving away from the disc, causing constant overheating and rapid wear.

It is also important to note that on some versions Nissan Almera calipers with a floating caliper are installed, where one or two pistons work in pairs. Part compatibility must be taken into account when replacing parts, as manufacturers may change component suppliers depending on the year of manufacture and region.

Diagnostics and symptoms of malfunction

How can you tell if something is wrong with your brakes? Symptoms can range from a subtle squeaking sound to a distinct burning smell. If you feel that the car is pulling to the side when braking, this is a sure sign that brake caliper on one side is not working properly. The piston or guide pin may be jammed.

Knocking or squeaking when coasting also requires immediate attention. This often means that the pad wear has reached a critical point and the metal base has begun to rub against the disc. In some cases, squeaking is caused by incorrect installation of anti-squeak plates or lack of lubrication on the guides.

⚠️ Attention: If you feel a pulsation in the pedal or steering wheel when braking, this may indicate that brake disc has runout or deformation. Continuing operation in this mode is dangerous, as it sharply reduces braking efficiency.

You should also not ignore visual signs. Inspect the wheels through the spokes: If you see a thick layer of black brake dust on one wheel and a clean condition on the other, this is a clear sign of a stuck caliper.

Selection of quality spare parts

The auto parts market is full of offers, but not all of them are suitable for your Nissan Almera. Original (Nissan Genuine Parts) is always a safe, but often expensive option. However, for critical nodes such as brake pads, overpayment is often justified by durability and stability of operation.

If your budget is limited, you can consider high-quality analogues from trusted brands, such as Brembo, TRW, ATE or Textar. The main rule: avoid cheap nonames that may not withstand thermal conditions or have incorrect friction layer geometry. Friction layer in cheap pads it can quickly collapse, leaving the metal unprotected.

When purchasing discs, pay attention to the presence of perforations or ventilation. To the rear wheels Nissan Almera Solid discs are often installed, since the load on them is lower than on the front ones. However, for sporty riding or frequent trips to the mountains, it is better to consider ventilated options if they are available for your modification.

Step-by-step instructions for replacing pads

Replacing rear brake pads with Nissan Almera - a task that can be done in a garage, but requires care and special tools. You will need a jack, a wheel wrench, a set of sockets, a wrench to open the caliper piston and, preferably, grease for the guides.

The first step is to securely secure the car. Remove the wheel and unscrew the two bolts securing the caliper bracket to the steering knuckle. Be careful: the bracket is heavy, it is better to hang it on a wire so as not to damage the brake hose.

After removing the bracket you will see the old pads. Remove them and clean the seats from dirt and rust. Be sure to check the condition of the guide pins: if they are jammed, they need to be removed, cleaned and lubricated with special silicone grease.

The hardest part is returning the piston to its original position. Unlike front calipers, rear pistons are often threaded. You can’t just press them in, you need to rotate them and push at the same time. Use special tool or a device for compressing the pistons. If you try to force it in, you may break the handbrake mechanism inside.

⚠️ Attention: Before compressing the piston, be sure to open the brake fluid reservoir cap and check the level. When the piston is pressed in, the fluid will be forced back into the reservoir, and if it is overfilled, it may spill out.

Install the new pads, making sure they move freely in the bracket. Return the bracket to its place, tighten the bolts to the recommended torque and install the wheel.

Maintenance and replacement of brake discs

Brake discs are the basis of safety. They need to be replaced less often than pads, but when the time comes, it needs to be done correctly. If there are deep grooves, cracks or runout on the surface of the disc, it must be replaced. Disc deformation may cause steering vibration and reduced braking performance.

To remove the disk Nissan Almera Often you will need to remove the caliper and bracket first. The disk itself is attached with one screw to the hub, which may be stuck. Use penetrating lubricant and gentle hammer blows on the inside of the disc to knock it off the hub. Do not hit the work surface!

Before installing a new disc, it must be wiped with a degreaser to remove preservation oil. Make sure the hub is also clean and level. Any gap or dirt can cause the new disc to run out during operation.

What to do if the disc has minimal wear?

If the thickness of the disk is within the acceptable minimum, but there are minor risks, you can try turning it on a machine. However, this is economically beneficial only if the disk has a thickness reserve. Otherwise, it is easier and cheaper to replace it entirely, since the machined disk heats up faster and becomes deformed.-->

⚠️ Attention

After replacing discs and pads, avoid sudden braking for the first 200-300 kilometers. This is necessary for running-in friction layer to the disc surface.

Adjusting the hand brake

Many owners Nissan Almera encounter a problem when the handbrake does not hold the car on a slope. This occurs because the handbrake mechanism was not adjusted when replacing the pads. There is a special mechanism inside the caliper that requires adjustment.

Adjustment is carried out through a hole in the caliper or by twisting the cable under the car. It is necessary to achieve a position where the lever handle rises 3-5 clicks before braking begins. Over-tightening can lead to constant braking and overheating of the rear wheels.

If simply adjusting the cable doesn't help, the mechanism inside the caliper may be worn out or stuck. In this case, you will need to disassemble the caliper and replace the springs or the parking brake mechanism itself.

Frequent maintenance errors

Newbie mistakes often lead to a new part failing within a week. The most common problem is using the wrong lubricant. Silicone grease for guides and graphite lubricant for the back of the pads are required. The use of lithol or solid oil is unacceptable, as they destroy rubber seals.

Cleaning the seats is also often forgotten. If there are old clumps of dirt or rust left on the caliper, the new pads will jam. Thorough cleaning with a wire brush is the key to long brake life.

Do not forget about the tightening torque of the bolts. Tightening too loose will lead to play and vibration, and tightening too tightly will lead to thread breakage or bracket deformation. Use a torque wrench for precise work.

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Regular cleaning and lubrication of caliper guides extends the life of the brake system by 2-3 times and prevents jamming.

Summary table of parameters and specifications

Below is a table with the main parameters of rear brake mechanisms for different generations Nissan Almera. This data will help you choose the right spare parts and understand wear rates.

Parameter	Value (mm)	Note
New disc thickness	10.0 - 12.0	Depends on year of manufacture
Minimum disc thickness	8.0 - 10.0	When reached - mandatory replacement
Pad thickness (new)	10.0 - 12.0	Excluding metal base
Minimum pad thickness	2.0	Critical wear, replacement required

It is critical to not allow pad wear below 2mm, as this can lead to caliper damage and costly repairs to the entire system.

Questions and answers (FAQ)

Why do rear brakes squeak after replacing pads?

This can be caused by several reasons: lack of lubrication on the back of the pads, lack of anti-squeak plates, or the natural breaking in of new pads to the disc. In most cases, the squeak goes away after 100-200 km.

Can only the front or only the rear brakes be replaced?

It is recommended to change only in pairs (both wheels of the same axle). Replacing only one pad will result in uneven braking and the car pulling to the side, which is dangerous at high speeds.

How often should brake fluid be changed?

The manufacturer recommends changing the brake fluid every 2 years or 40,000 km. It is hygroscopic and absorbs moisture, which lowers the boiling point and can lead to brake failure.

What to do if the caliper is stuck?

Stop using the vehicle immediately. Replace the guide pins, check the piston and cuff. Cleaning and lubrication often helps, but in severe cases the caliper assembly may need to be replaced.

Do I need to grind discs when replacing pads?

If the discs do not have deep grooves or runout, grooving is not necessary. It is enough to simply clean the surface and ensure high-quality running-in of the new pads.