<em>Nissan Almera Classic</em> caliper repair kit: how to choose and replace it yourself

Nissan Almera Classic (N16) is a popular sedan that is still actively used on the roads of the CIS. One of the common problems that owners face is wear and tear on the brake calipers. Untimely replacement of the repair kit can lead to jamming of the pistons, uneven wear of the pads and even scuffing of the brake discs. In this article, we will look at how to choose the right repair kit, what article numbers of original and non-original parts exist, and also give step-by-step instructions for replacement, taking into account the nuances of a particular model.

Calipers on Almera Classic They do not have a complex design, but they have their own characteristics. For example, front calipers often suffer from corrosion of the guides, while rear calipers (if we are talking about versions with disc brakes) require special attention to the condition of the anthers. We will not limit ourselves to general advice - in the material you will find specific articles, photographs of key disassembly stages and warnings about typical mistakes that even experienced craftsmen make.

When you need a caliper repair kit: signs of wear

Many owners Nissan Almera Classic They ignore the first symptoms of a caliper malfunction, attributing them to “car features.” However, even a slight jamming of the piston increases the braking distance by 15–20% and leads to overheating of the brake fluid. Look out for the following signs:

• 🔴 Uneven pad wear - one of them is erased 2-3 times faster than the other. This indicates that the piston or guides are jammed.
• 🔊 Creaking or knocking when braking, which does not disappear after replacing the pads and lubricating the guides.
• 🔥 Brake disc overheating — after intense braking, the disc remains hot for more than 10 minutes (you can check it with your hand without touching the rotating parts!).
• 🛑 Pulling the car to the side when braking, even if the wheel alignment is normal.
• 💧 Brake fluid leaks on the inside of the wheel - a sign of damage to the piston seals.

The last point is especially critical: fluid leakage not only reduces braking efficiency, but can also lead to complete failure of the brakes on one of the wheels. On Almera Classic with ABS, this risks the system triggering at an unpredictable moment. If you notice at least one of the listed symptoms, inspect the calipers visually - often the problem is visible to the naked eye (rust on the guides, torn boots).

⚠️ Attention: On versions Almera Classic with engines QG15DE And QG18DE The rear calipers (if disc brakes are installed) have a different piston design than the front ones. Do not confuse repair kits - they are not interchangeable!

Article numbers of repair kits: original vs analogues

Original repair kits from Nissan for Almera Classic (N16) are supplied under article numbers that depend on the year of manufacture and type of brake system. Below is a table with current numbers for front calipers (the most popular):

Part type	Original article	Analogs (brand + article)	Note
Front caliper repair kit (left/right)	40520-4M000	TRW PFH100, Ate 03.9902-0116.2, Febi 10361	Includes piston cups, boots, guides
Piston boot (separately)	40526-4M000	Corteco 19010010, Elring 535.170	Often breaks due to careless disassembly
Caliper guides (set of 2 pcs.)	40525-4M000	TRW PFH105, Febi 10362	It is recommended to replace even if they look normal on the outside.
Piston collar (separately)	40528-4M000	Ate 03.9901-0116.2, SKF VKDW 00104	It is critical to choose the correct diameter (38 mm for most versions)

For rear calipers (if your Almera Classic equipped with disc brakes at the rear) the following items are relevant:

• 📌 Original repair kit: 40530-4M000 (includes seals and boots for piston with hand brake).
• 📌 Analogues: TRW PFH101, Ate 03.9902-0117.2.

When choosing analogues, pay attention to country of origin. For example, repair kits TRW And Ate (Germany) last longer than their Chinese or Turkish counterparts, but also cost 30–50% more. If your budget is limited, you can consider brands Febi (Germany/Türkiye) or Corteco (Portugal) - They offer good value for money.

Step-by-step replacement of caliper repair kit: tools and preparation

To replace the repair kit with Nissan Almera Classic you will need:

• 🔧 A set of sockets and keys (a head must be present on 14 mm And 17 mm for guides).
• 🔨 A special key for pressing the piston (or a clamp with a flat overlay).
• 🧴 Caliper Lubricant (For example, TRW PFG110 or Slipkote 220-R DBC).
• 🧽 Brake cleaner (Brake Cleaner) and lint-free rags.
• 🛠️ New guides (even if the old ones “seem normal”).

Before starting work, complete the following steps:

Unscrew the cap of the brake fluid reservoir (to reduce pressure in the system) | Jack up the car and remove the wheel | Clean the caliper from dirt with a wire brush | Take photographs of the location of all parts before disassembling-->

Important nuance: On Almera Classic The front calipers are secured with two bolts on 17 mm, but one of them often gets stuck. To avoid tearing off the edges, treat the bolts with a penetrating lubricant (for example, WD-40) and let stand for 10-15 minutes. If the bolt does not budge, use an impact wrench or a socket wrench with an extension.

⚠️ Attention: Never use to lubricate guides. Litol, Solid oil or other universal lubricants! They cannot withstand high temperatures and can jam the caliper. Only specialized compounds for brake systems!

Disassembling and replacing the repair kit: step-by-step instructions

The replacement algorithm is the same for the left and right calipers, but it is recommended to start with the more worn side (usually the right one, since it is loaded more during braking). Follow the instructions:

1. Removing the caliper: Unscrew the two bolts securing the caliper to the bracket (on 17 mm). Carefully remove the caliper and hang it on a wire to the spring - do not allow sagging on the brake hose, it may damage it.

2. Removing the piston: Using a clamp or special wrench, press the piston back into the cylinder. If the piston does not move, do not apply excessive force - first check to see if it is corroded. As a last resort, use a puller.

3. Replacing cuffs and anthers: Remove the old O-ring from the piston and clean the groove. Install the new ring without twisting! Place the piston boot on a special lubricant (for example, Slipkote).

4. Guide processing: Remove the old guides and clean the seats. Lubricate the new guides with a thin layer and install them in place. Tighten firmly 25–30 Nm.

5. Assembly: Install the caliper in place, tighten the mounting bolts (tightening torque 80–100 Nm). Bleed the brakes to remove air from the system.

After assembly, be sure to check the operation of the caliper: press the brake pedal several times. If the piston moves smoothly and the pads are pressed evenly, the repair has been completed correctly. If the pedal becomes “soft”, it means that air has entered the system and it needs to be pumped again.

Typical mistakes when replacing a repair kit

Even experienced craftsmen sometimes make mistakes that lead to repeated repairs. Here are the most common of them using an example: Nissan Almera Classic:

• 🔧 Using the wrong lubricant for guides. For example, Litol-24 or CV joint-4 thicken when heated and block the movement of the caliper.
• 🧩 Incorrect installation of the piston boot. If the boot is twisted or not put on all the way, it will quickly tear and dirt will get into the cylinder.
• 🔨 Tightening guides without a torque wrench. Weak tightening leads to play, and excessive tightening leads to jamming.
• 💧 Ignoring bleeding the brakes after replacing the cuffs. Even if the fluid did not leak, air may have formed in the system.

Another common problem is brake hose damage when removing the caliper. On Almera Classic hoses often “stick” to the caliper, and attempts are made to remove them by force. This leads to cracks and leaks. If the hose does not unscrew, remove the caliper along with it, and then carefully unscrew the hose in a vice.

What to do if the piston is jammed and cannot be pressed in?

If the piston does not move even after applying WD-40, try the following:

1. Apply pressure to the cylinder through the bleeder fitting (use a compressor or pump).

2. Gently tap the piston through the wooden spacer.

3. If all else fails, the caliper must be replaced, since corrosion could damage the cylinder mirror.

Is it worth repairing or is it better to buy a new caliper?

Owners Almera Classic People often ask: does it make sense to repair a caliper or is it cheaper to buy a new one? The answer depends on the condition of the part:

• ✅ Repair is justified, if:
  • The caliper cylinder has no scoring or corrosion.
  • The piston moves smoothly after cleaning.
  • The cost of a repair kit does not exceed 30% of the price of a new caliper.
• ❌ Caliper needs replacement, if:
  • There are scratches or rust on the cylinder mirror.
  • The piston does not move even after using a puller.
  • The caliper body is deformed (for example, after an accident).

Cost of a new caliper for Almera Classic (original Nissan) is about 8 000–12 000 ₽, while a high-quality repair kit will cost 1 500–3 000 ₽. However, if the caliper has already been repaired before, there is a high risk of repeated wear - in this case, it is more advisable to install a new part.

Caring for calipers after repair: how to extend their service life

To make your caliper repair kit last longer, follow these recommendations:

• 🧴 Every 10,000 km Clean the guides from dirt and apply new lubricant.
• 🚿 Wash the calipers special means (for example, Liqui Moly Bremsen-Reiniger) at least once a year.
• 🔧 Check the condition of the anthers every time you replace the pads.
• 🛑 Avoid aggressive braking in the first 200 km after repair - this will help the cuffs to “get used to”.

Pay special attention brake fluid. On Almera Classic It is recommended to use class fluid DOT-4 and change it every 40,000 km or once every 2 years. Old fluid accumulates moisture, which leads to corrosion of the pistons and caliper cylinders.

FAQ: Frequently asked questions about caliper repair kits

Is it possible to use a repair kit from Nissan Primera P12 on Almera Classic?

No, the calipers of these models are not interchangeable. U Primera P12 different piston diameter (42 mm versus 38 mm for Almera Classic), and repair kits will not fit. Exception - some versions with engine QR20DE, but even there there are differences in the fastening of the guides.

How to check if the caliper is stuck?

Jack up the car, remove the wheel and try turning the brake disc by hand. If it rotates with effort or does not rotate at all, the caliper is stuck. You can also heat the disc after a trip: if one side is hotter than the other, the piston does not return to its original position.

How long does it take to replace a repair kit?

If you have experience and tools - approx. 1.5–2 hours for one caliper. If the guides are stuck or the piston is jammed, the time may increase by up to 3–4 hours. Take your time - it’s better to do everything carefully than to redo it later.

What should I do if after replacing the repair kit the brake pedal becomes soft?

This is a sign of air in the system. It is necessary to bleed the brakes, starting with the wheel furthest from the master cylinder (at Almera Classic order: right rear → left rear → right front → left front). Use new brake fluid.

Is it possible to drive if the caliper boot is torn?

Short term - yes, but no more 1–2 weeks. Dirt and moisture will quickly destroy the piston seal and the caliper will jam. Replace the boot as soon as possible and check the condition of the piston.