<em>Nissan Almera Classic</em>brake cylinder: do-it-yourself diagnostics, repair and replacement

Nissan Almera Classic (internal designation B10) is one of the most popular sedans on the secondary market of the CIS, but its braking system, especially master and slave cylinders, requires special attention after 150–200 thousand km. Unlike modern models with ABS and electronic assistants, everything here depends on mechanics: wear of the cuffs, corrosion of the pistons or jamming of the rod can lead to complete loss of brakes while driving - a problem that owners face after replacing brake fluid with low-quality one or ignoring scheduled maintenance.

In this article we will look at how diagnose problems yourself brake cylinders on Almera Classic (including versions with engines QG15DE And QG18DE), which original and similar spare parts are suitable for replacement, and we will give step-by-step instructions with nuances that cannot be found in the manuals. We will pay special attention typical mistakes when bleeding the system and choosing repair kits, this will save you thousands of rubles on repeated repairs.

Brake system design Nissan Almera Classic: where the cylinders are located

Brake system Almera Classic built according to the classical scheme with hydraulic drive and a vacuum booster. At its core:

• 🔧 Brake Master Cylinder (Brake Master Cylinder) — located under the hood, attached to the vacuum booster. Responsible for creating pressure in the system when you press the pedal.
• 🛑 Working cylinders (RTC) — one on each wheel (front — in calipers, rear — in drums). Convert hydraulic pressure into mechanical force that presses the pads.
• 🔄 Tubes and hoses — connect the GTZ with the RTC. On Almera Classic often suffer from corrosion, especially at the points of attachment to the body.

Model Feature: rear drum brakes (on most trim levels), where the working cylinders are hidden inside the mechanism. This complicates diagnostics - for example, a leak in the rear RTC can only be noticed when the drum is removed or by a characteristic oiling the inner surface pads In front calipers, the cylinders are more accessible, but their pistons are often sour due to lack of lubrication.

Signs of faulty brake cylinders: when is it time to go to a service center

Symptoms of problems with cylinders on Almera Classic often disguised as other faults (for example, worn pads or a faulty vacuum booster). However there is unique “bells”, which directly indicate the GTZ or RTC:

⚠️ Attention: If, after replacing the brake fluid, the pedal becomes “wobbly” and slowly falls when held, this is 100% sign of master cylinder failure. On Almera Classic this occurs due to the destruction of the internal seals or corrosion of the cylinder mirror.

• 🚗 Brake fluid leak under the pedal (GTC) or on the inside of the wheels (RTC). On Almera leak frequently rear cylinders — the liquid mixes with dirt and forms dark stains on the anthers.
• 🔴 Uneven braking: The car pulls to the side when you press the pedal. Reason - jammed piston in one of the working cylinders (usually the front one).
• 🛠️ Difficult pedal movement (presses hard or does not return). Culprit - corrosion of the GTZ rod or clogged compensation hole.
• 💧 Constantly decreasing fluid level in the tank, even without visible leaks. This means that the liquid is leaving inside cylinder (for example, through a damaged piston collar).

On Almera Classic with mileage >200 thousand km often found complex fault: both the GTZ and 1–2 working cylinders wear out at the same time. In this case more economically profitable Replacing everything at once rather than repairing it piecemeal. Price issue: the original GTZ will cost ~8–12 thousand rubles, and a complete set of working cylinders (4 pieces) will cost 5–7 thousand rubles (analogs are 30–50% cheaper).

How to check brake cylinders for Nissan Almera Classic without disassembly

You can carry out diagnostics yourself without removing the wheels or GTZ. You will need: flashlight, jack, wrench 10 and an assistant for pressing the pedal. Follow this algorithm:

Remove the brake fluid reservoir cap and check the level (should be between MIN and MAX)

Press the brake pedal 5-6 times with force and hold it - if it slowly “falls”, the turbocharger is faulty

Raise the car on a jack and turn each wheel by hand: if it locks jerkily, the cylinder on that wheel is jammed

Inspect the inside of the wheels for fluid leaks (especially the rear drums)

Check the free play of the pedal - if it is too large (>5 cm), adjustment or replacement of the turbocharger is needed -->

To check rear working cylinders on Almera Classic There is a trick: remove the drum (by unscrewing the 2 guide pins with a 10mm wrench) and press the brake pedal. If the cylinder pistons do not extend synchronously or one of them “sticks”, the part must be replaced. Also note anthers - if they are torn, dirt gets inside and the cylinder quickly fails.

What to do if the cylinder “leaks” only when you press the pedal?

This is a sign of wear and tear o-rings piston Liquid leaks past the cuffs only under pressure, but in a calm state there is no leakage. Such a cylinder can still “hold” the brakes, but it urgently needs to be replaced - Over time, the leak will become constant and the system will lose efficiency.

Selection of spare parts: original vs analogues for Nissan Almera Classic

When purchasing brake cylinders for Almera Classic (B10) important to consider year of manufacture and engine type - details for versions with QG15DE And QG18DE may differ in fastenings. Below is a table with verified items:

Cylinder type	Original article	High-quality analogues	Approximate price, ₽
Brake Master Cylinder (Brake Master Cylinder)	40520-4M000 (until 2006) 40520-4M001 (after 2006)	TRW PMC 1000, ATE 03.5002-0172.2	8 000–12 000
Front working cylinder (in caliper)	40530-4M000 (left/right)	Febi 22360, Blue Print ADG02401	1 200–1 800
Rear working cylinder (drum)	40540-4M000	TRW PMC 1300, ATE 03.5003-0061.2	900–1 500
GTZ repair kit (cuffs, springs)	40528-4M000	Kagero TK-012, Nissens 42101	800–1 200

Selection tips:

• 🔍 For rear cylinders just take it metal analogues (for example, TRW) - plastic ones often burst in cold weather.
• 🛒 When purchasing GTZ, check availability bleeder plugs - some cheap analogues do not have it, and it will be impossible to bleed the system.
• 🔧 To repair the GTZ, it is better to take complete repair kit with springs and thrust washers, and not just cuffs.

Step-by-step replacement of the master brake cylinder: nuances for Almera Classic

Replacing the GTZ with Almera Classic takes ~2–3 hours and requires pumping the system. You will need:

• 🔧 Keys for 10, 12 and 14 (for tubes and fasteners).
• 🧰 A special wrench for brake pipes (or a 10mm open-end wrench with a “bite off” for stuck nuts).
• 🧴Brake fluid DOT-4 (1 liter), syringe for pumping out old fluid.
• 🧽 Rags and WD-40 for cleaning threaded connections.

Work order:

1. Pump out the brake fluid from the reservoir with a syringe.
2. Disconnect the tubes from the GTZ, having previously marked their location (for example, with tape with numbers). On Almera Classic the front and rear circuit tubes are often confused - this will lead to incorrect brake operation!
3. Unscrew the 2 nuts securing the GTZ to the vacuum booster (12mm wrench).
4. Remove the old cylinder and install a new one, after lubricating the vacuum booster rod special lubricant (For example, Liqui Moly Bremsen-Anti-Quietsch-Paste).
5. Connect the tubes, tighten the nuts without distortions (tightening torque: 15–18 Nm).
6. Add new fluid and bleed the system in order: rear right → front left → rear left → front right.

⚠️ Attention: On Almera Classic with ABS, bleeding must be carried out with a connected scanner (for example, Launch X431), otherwise air will remain in the accumulator. You can only do without a scanner on cars until 2005 without ABS.

Replacing brake wheel cylinders: front and rear

Front cylinders (in calipers) on Almera Classic change together with the caliper or separately if the piston is jammed. Algorithm:

1. Remove the wheel and unscrew the caliper (2 x 14 bolts).
2. Remove the cylinder from the guides, having first disconnected the brake hose (you will need a 10mm wrench).
3. Install the new cylinder, lubricating the piston high temperature grease (For example, Slipkote 220-R DBC).
4. Bleed the circuit.

Rear cylinders (in reels) changing is more difficult:

1. Remove the drum (you may need a puller or a hammer with a wooden spacer).
2. Disconnect the brake pipe and remove the springs securing the pads.
3. Unscrew the 2 bolts securing the cylinder (10mm wrench) and remove it.
4. Install a new cylinder and reassemble the mechanism in reverse order.
5. Adjust the gap between the pads and the drum using eccentric bolt (located on the brake mechanism shield).

On Almera Classic after replacing rear cylinders they are often forgotten adjust the handbrake. To do this:

1. Raise the parking brake lever 2-3 clicks.
2. Spin the rear wheel - it should lock with slight effort.
3. If there is no blocking, tighten the handbrake cable under the car (the 12 nut is protected).

Bleeding brakes after replacing cylinders: errors and solutions

Bleeding the brake system Almera Classic has nuances:

• 🔧 Use only new DOT-4 fluid — DOT-3 or DOT-5.1 are not suitable due to different boiling points.
• 🚗 Upgrade the contours in strict sequence: rear right → front left → rear left → front right.
• 💧 Each wheel must come out clear liquid flow without bubbles (usually requires 3-5 pedal strokes).

Typical mistakes:

• ❌ Pumping “dry” - if the liquid in the tank runs out, air will enter the system, and the process will have to start again.
• ❌ Using rusty or dirty hoses for bleeding will contaminate the new fluid.
• ❌ Leveling up without an assistant - on Almera Classic The brake pedal must be pressed smoothly, otherwise the air will not escape from the distant circuits.

What to do if the brakes won't bleed?

1. Check the tightness of all connections - even a microcrack in the tube will nullify the efforts.

2. Make sure that the new GTZ or RTC does not have a manufacturing defect (this happens with cheap analogues).

3. If air remains in the system, try pumping it “in reverse” (using a vacuum pump connected to the fitting).

FAQ: Frequently asked questions about brake cylinders Nissan Almera Classic

Can the brake master cylinder be repaired or is it just a replacement?

Repair is possible if the GTZ housing does not have cracks or severe corrosion. For this they buy repair kit (article 40528-4M000) with cuffs and springs. However, in practice, after repair, the cylinder does not last long (1–2 years), so it is better to install a new one.

Why did the brake pedal become stiff after replacing the cylinders?

This happens due to:

• Incorrect assembly (for example, the piston in the caliper is warped).
• Air getting into the vacuum booster (you need to check the hose from the intake manifold).
• Using low-quality brake fluid (it can thicken in the cold).

Solution: bleed the system again and check the free play of the pedal (should be 3–5 mm).

What kind of brake fluid to pour into Almera Classic?

Only DOT-4 with a boiling point not lower than 230°C. Suitable brands: ATE SL.6, Liqui Moly DOT-4, Castrol React DOT-4 LV. The fluid needs to be changed every 2 years or 40 thousand km - it is hygroscopic and loses its properties.

How long do brake cylinders last? Almera Classic?

Service life depends on operating conditions:

• GTZ: 150–200 thousand km (or 8–10 years).
• Working cylinders: 100–150 thousand km (the rear ones fail more often than the front ones).

The service life is affected by the quality of the brake fluid and the frequency of replacement. For example, if the fluid has not been changed for 5+ years, the cylinder cuffs will swell and break down.

Is it possible to drive if the slave cylinder is leaking?

Absolutely not! Even a small leak leads to:

• Gradual loss of brake fluid and brake failure.
• Air entering the system, causing the pedal to become “wobbly”.
• Oiling of the pads (if the front cylinder is leaking), which reduces braking efficiency by 2–3 times.

If the cylinder starts to leak, it needs to be replaced within 1–2 days.