Rear brake cylinder Nissan Terrano (especially in models R51 And R20) is a critical element of the braking system, on which not only braking efficiency, but also safety on the road depends. This unit is responsible for transmitting pressure from the master cylinder to the brake pads, ensuring that they are evenly pressed against the drum. However, over time, the cylinders wear out, leak, or seize, resulting in reduced braking performance or even complete system failure.

In this article we will look at how Recognize rear brake cylinder faultswhat tools will be needed for replacement, and how to choose the right spare parts for Terrano different generations. We will pay special attention to typical repair errors that can lead to repeated failure of the unit. If you notice that the brake pedal has become “soft” and traces of brake fluid have appeared on the inside of the rear wheel, this is a direct signal for diagnosis.

Signs of a bad rear brake cylinder

The first and most obvious symptom of the problem is brake fluid leak from under the cylinder boot. On Nissan Terrano With drum brakes, this manifests itself as wet spots on the inside of the wheel or traces of fluid on the brake flap. However, there are also less noticeable signs that are often ignored until a critical moment:

  • 🔴 Uneven braking: The car pulls to the side when you press the pedal, especially at low speeds.
  • 🔴 Increased pedal travel: The brake pedal “sinks” or requires more force to operate.
  • 🔴 Extraneous sounds: creaking or metallic clanging from the rear wheels when braking (indicates misalignment of the pads due to a faulty cylinder).
  • 🔴 Wheel jam: After parking, one of the rear wheels rotates with force or is blocked.

On Terrano R51 (2005–2014) and R20 (1999–2005) the design of the rear brakes is similar, but there are nuances. For example, in R20 Corrosion of the cylinder piston is more common due to the less protected boot, and in R51 — problems with sealing cuffs. If a fluid leak is ignored for more than 2-3 weeks, the risk of damage to the master cylinder increases by 70%. - this will lead to expensive repairs of the entire system.

⚠️ Attention! If the brake pedal remains soft after replacing the pads or cylinder, check the condition of the brake hoses. On Terrano Over 10 years old, they often crack on the inside, mimicking the symptoms of a faulty cylinder.
📊 How often do you check the condition of the rear brakes on your Nissan Terrano?
  • Every 10,000 km
  • Once a year
  • Only when problems arise
  • Never checked

Diagnostics: how to confirm a cylinder failure

Before proceeding with the replacement, it is necessary to accurately determine that it is the rear brake cylinder that is to blame, and not, for example, worn pads or a damaged brake hose. Here is a step-by-step diagnostic algorithm for Nissan Terrano:

  1. External inspection: Remove the rear wheel and inspect the brake mechanism. Traces of liquid on the boot or cylinder body are a direct sign of a leak.
  2. Checking the piston stroke: Have a helper press the brake pedal while you watch the cylinder. If the piston does not extend or extends unevenly, the cylinder is faulty.
  3. Leak test: With the brake pedal depressed, loosen the bleeder screw on the cylinder. If liquid leaks from it, the seals are worn out.
  4. Checking the backlash: Rock the wheel horizontally. Play of more than 1–2 mm may indicate wear on the guides or the cylinder itself.

For accurate diagnosis you can use diagnostic scanner (For example, Launch CReader), which will show error codes related to brake pressure. On Terrano with ABS a faulty cylinder may cause an error C1130 (low pressure in the rear brake circuit).

Symptom Probable Cause Action
Fluid on the inside of the wheel Leaking cylinder or hose Replacing the cylinder/hose + bleeding
Wheel gets stuck after parking Jammed cylinder piston Cylinder replacement + pad check
The pedal "falls" Worn cuffs or air in the system Bleeding + replacement of cylinder in case of leakage
Creaking noise when braking Misaligned pads due to uneven piston stroke Cylinder replacement + pad adjustment
💡

On Nissan Terrano R51 with rear disc brakes (restyling 2010+) the cylinder is integrated into the caliper. In this case, the caliper assembly is replaced, not a separate cylinder.

Selection of spare parts: original vs analogues

When replacing the rear brake cylinder with Terrano The owner is faced with a choice: buy an original part or an analogue. Original cylinders from Nissan (see article numbers below) guarantee compatibility and long service life, but their price is 2–3 times higher than their analogues. On the other hand, high-quality non-original parts (for example, from Ate, TRW or Febi) can last no less if installed correctly.

Here are the article numbers of the original cylinders for popular versions Terrano:

  • 📌 Nissan Terrano R51 (2005–2014, drum brakes): 40520-4M000 (right) / 40520-4M001 (left).
  • 📌 Nissan Terrano R20 (1999–2005): 40520-7S000 (universal).
  • 📌 Terrano II (1993–2000): 40520-7S000 or 40520-7S010 (depending on the market).

When choosing an analogue, pay attention to:

  • 🔧 Piston material: must be aluminum or stainless steel (cheap cylinders with a steel piston rust quickly).
  • 🔧 Seal quality: cuffs should be made of EPDM rubberresistant to brake fluid DOT-4.
  • 🔧 Complete set: a good repair kit includes new boots, springs and guides.
⚠️ Attention! On Terrano R51 with the system ESP required after replacing the cylinder brake adaptation through a diagnostic scanner. Without this, the system may not work correctly, producing an error C1145.
How to distinguish a fake from the original?

Original cylinder Nissan has:

1) Manufacturer's logo and article number stamped on the case (not a sticker!).

2) Boot made of dense rubber with metal reinforcement.

3) Packaging with a hologram and barcode, which can be checked on the website Nissan.

Counterfeits often come in plastic bags without markings or with blurred text on the body.

Step-by-step instructions for replacing the rear brake cylinder

Replacing the cylinder with Nissan Terrano - a task of medium complexity that requires accuracy and compliance with safety precautions. Working time: 1.5–2 hours per wheel. You will need:

  • 🔧 A set of sockets and keys (especially by 10, at 12, at 14).
  • 🔧 Special wrench for bleeding brakes (or pipe wrench by 8).
  • 🔧 Brake fluid DOT-4 (not less than 0.5 l).
  • 🔧 WD-40 or a similar composition for unscrewing stuck bolts.
  • 🔧 New brake pads (recommended to be replaced at the same time as the cylinder).

Replacement algorithm:

  1. Preparation: Jack up the car, remove the rear wheel and unscrew the brake drum. If the drum does not come off, work on its fit WD-40 and carefully tap it with a hammer through the wooden spacer.
  2. Removing the old cylinder:
    • Disconnect the brake pipe from the cylinder (prepare a container to drain the fluid in advance!).
    • Unscrew the two bolts securing the cylinder to the brake flap (head for 12).
    • Remove the cylinder by carefully disengaging it from the pads.
  3. Installing a new cylinder:
    • Apply a thin layer copper grease onto the thread of the bleeder fitting.
    • Place the cylinder in place, secure with bolts (tightening torque - 25–30 Nm).
    • Connect the brake pipe and tighten the fitting (torque - 12–15 Nm).
  • Bleeding the brakes: Start with the right rear wheel, then left rear, right front, left front. Use only new fluid!

    • 1. Check the fluid level in the reservoir (should be at MAX).

    2. Make sure that all bleeder fittings are unscrewed (if necessary, treat with WD-40 in advance).

    3. Prepare a transparent hose and a container to drain the liquid.

    4. Have an assistant press the brake pedal on command.-->

    After replacing the cylinder, be sure to check:

    • 🔹 No leaks from under the fitting and boot.
    • 🔹 Uniform application of the brakes (the pedal should not “go” to the floor).
    • 🔹 No extraneous sounds when the wheel rotates.
    💡

    On Terrano R51 with ABS After bleeding the brakes, you need to reset the errors in the control unit. To do this, connect the scanner and run the command Clear DTC in section ABS/VDC.

    Typical replacement mistakes and how to avoid them

    Even experienced craftsmen sometimes make mistakes that lead to repeated cylinder failure or other problems. Here are the most common mistakes when working with Nissan Terrano:

    • ❌ Using old brake fluid: The liquid is hygroscopic and loses its properties after 2–3 years. Always refill when replacing a cylinder!
    • ❌ Tightening the bleeder fitting: This causes the thread to break. Tightening torque - no more 15 Nm.
    • ❌ Ignoring the condition of the brake pads: A new cylinder with worn pads will last 2 times less.
    • ❌ Lack of lubrication on the guides: Causes piston to jam. Use brake cylinder lubricant (For example, Slipkote 220-R).
    • ❌ Incorrect pumping: If there is air left in the system, the pedal will be “soft” and the braking distance will increase.

    Another common mistake is installing the cylinder without checking the brake hose. On Terrano Hoses older than 10 years often crack from the inside, which leads to a “sponge effect” when pressing the pedal. Always inspect hoses for cracks or swelling!

    ⚠️ Attention! On models with EDS (electronic differential lock) sensors may need to be calibrated after replacing a cylinder. If the indicator on the dashboard comes on SLIP, consult a diagnostician.

    Rear Brake Maintenance: How to Extend Cylinder Life

    Rear brake cylinder service life Nissan Terrano depends not only on the quality of the part, but also on the operating conditions. On average, the original cylinder lasts 80–120 thousand km, but with aggressive driving or off-road driving, this period is reduced to 50–60 thousand km. To extend a node's resource:

    • 🛠️ Change brake fluid every 2 years (or 40 thousand km). Old fluid corrodes the cuffs.
    • 🛠️ Check the cylinder boots at every maintenance. Cracks or breaks are a signal for replacement.
    • 🛠️ Avoid holding the brake pedal for long periods of time in a parking lot (for example, at a traffic light). This creates excess pressure in the system.
    • 🛠️ Wash your brakes after driving through mud or salt (in winter). Corrosion is the main enemy of cylinders.

    On Terrano R51 with rear disc brakes (an option for some markets), the cylinder is integrated into the caliper, and its service life is longer - up to 150 thousand km. However, such calipers are sensitive to the quality of the pads: cheap friction materials increase piston wear.

    If you often drive off-road, install protective plates for brake mechanisms (article 40535-4M000 for R51). They prevent dirt and water from entering the cylinders.

    FAQ: Frequently asked questions about rear brake cylinders Nissan Terrano

    Can I drive with a current rear brake cylinder?

    No! A fluid leak leads to a drop in pressure in the system, which increases the braking distance and the risk of an accident. In addition, brake fluid corrodes paint and rubber parts. At the first sign of a leak replace the cylinder immediately.

    How much does it cost to replace a rear brake cylinder on a Terrano at a service center?

    The cost of work in the service depends on the region and complexity:

    • Replacing one cylinder: 1,500–2,500 rub.
    • Replacing both cylinders + pads + bleeding: 4,000–6,000 rub.
    • Diagnostics ABS/ESP after replacement: 1,000–1,500 rub.

    Prices are current for Moscow and the region as of 2026.

    Which brand of cylinder is better to choose for Terrano R51?

    Recommended brands (price/quality ratio):

    1. Ate (article 24.5203-0129.2) - the best analogue, resource like the original.
    2. TRW (article PFC1404) - reliable seals, suitable for difficult conditions.
    3. Febi (article 23403) is a budget option, but requires frequent checking.
    4. Nissan (original) - if you want a guarantee of 100% compatibility.

    Avoid cheap Chinese brands (Fenox, Trialli) - their cylinders often leak after 10–20 thousand km.

    Do I need to change the cylinder if only the boot is leaking?

    Yes! If the boot is torn, dirt and moisture get inside the cylinder, which leads to corrosion of the piston and wear of the seals. Even if there is no fluid leak yet, the cylinder still needs to be replaced — its repair (replacing the boot) is impractical due to the low cost of a new part.

    Can I bleed the brakes myself after replacing the cylinder?

    Yes, but you will need an assistant. Algorithm:

    1. Fill the reservoir with new fluid up to the mark MAX.
    2. Place a transparent hose onto the bleeder fitting and lower the other end into a container with liquid.
    3. An assistant presses the brake pedal 3-4 times and holds it.
    4. You unscrew the fitting 1/2 turn - liquid with air comes out.
    5. Tighten the fitting and repeat the process until liquid comes out of the hose without bubbles.

    On Terrano with ABS After pumping, you may need to reset errors through the scanner.