Rear hub <em>Nissan Almera G15</em>: how to diagnose and replace without errors

Introduction: Why the hub is a critical component

Rear hub in Nissan Almera G15 (2012–2019) is not just a part, but a unit on which it depends management security, suspension life and even fuel consumption. Many owners ignore the first signs of wear, attributing hum or vibration to “road conditions,” but such delay is fraught destruction of the bearing right on the move - with all the ensuing consequences for the brake disc and axle shaft.

Unlike the front hub, the rear one is Almera G15 experiences less load, but its replacement requires precision: there are no ball joints or steering knuckles, but there are nuances with ABS sensor and fastening to the beam. In this article we will analyze all stages — from diagnostics to selection of spare parts and installation, taking into account typical mistakes that even experienced craftsmen make.

Signs of a bad rear hub: when to sound the alarm

Symptoms of wear on the wheel bearing or the hub itself Almera G15 often disguised as other problems - wheel imbalance or brake malfunctions. Here key signalsthat cannot be ignored:

• 🔊 Hum or howl from the rear wheel, increasing at speed 60–90 km/h. The sound may disappear when turning (due to load redistribution).
• 🌀 Vibration on the steering wheel or body, especially when braking, is a sign of play in the bearing or hub deformation.
• 🚨 Hot wheel after the trip (touch carefully!). Overheating indicates a seized bearing.
• 🔴 ABS error on the dashboard - if the sensor is built into the hub, damage to it can disable the system.

Feature Almera G15: Due to the design of the rear suspension (torsion beam), hub wear is often accompanied by Uneven rear tire wear along the inner edge. If you notice “bald patches” on the tire, check the hub play necessarily.

⚠️ Attention: If you hear a click or feel play when rocking the wheel with your hands, drive this car prohibited. The bearing can fail at any time, blocking the wheel.

Diagnostics: how to confirm the problem without disassembling

Before you buy a new hub, make sure that this is the problem. Here 3 reliable ways diagnostics for Almera G15:

1. Backlash test:
   • Jack up the rear wheel and grab it with your hands at the 9 and 3 o'clock positions.
   • Pull the wheel sharply toward/away from you. Backlash more 0.5 mm - a sign of bearing wear.
2. Bearing audition:
   • Start the engine, turn on 4th gear and accelerate to 60 km/h.
   • Depress the clutch and turn off the gear - if the noise remains, the problem is in the hub.
3. Checking the ABS sensor:
   • Connect a diagnostic scanner (for example, ELM327) and check for errors in the code C1130 (rear wheel sensor malfunction).

If the bearing only hums when turning, the problem may be seat wear on the hub - it will have to be replaced entirely, even if the bearing is still “alive”. On Almera G15 this is a common problem after 100,000 km mileage

What should I do if the hum disappeared after replacing the bearing, but then returned?

This is a typical situation when the master did not check hub seat on beam. If wear is severe, the new bearing “grinds” against the uneven surface and begins to make noise again. The solution is to replace the hub assembly or bore the mounting hole (for experienced craftsmen).

Selection of spare parts: original vs analogues, which is better for Almera G15

There are three types of hubs on the market for Nissan Almera G15:

Part type	Article	Manufacturer	Average price, ₽	Pros/Cons
Original	40520-BM40A (right) 40520-BM40B (left)	Nissan	8 000–12 000	✅ 100% compatibility, resource 150,000+ km ❌ High price, often counterfeited
Analogue (premium)	VKBA 3406 (left/right)	SKF, NTN, Koyo	5 000–7 000	✅ Quality is not inferior to the original ❌ Fakes are possible (check the packaging)
Budget analogue	JBK 100520	Febi, TRW, Optimal	3 000–4 500	✅ Low price ❌ Resource 50,000–80,000 km, there may be problems with the ABS sensor

Important nuance: on Almera G15 left and right hubs not interchangeable — they have different threads for attaching the brake disc. When purchasing, check the article number VIN code or visually (marking is stamped on the original part L or R).

⚠️ Attention: If you buy a hub with bearing assembly, pay attention to ABS sensor marking. On some analogues (for example, Febi) the sensor may not match the length of the wire or connector - this will lead to an error C1130.

Step-by-step replacement of the rear hub: instructions with nuances

To replace the hub with Almera G15 you will need:

• 🔧 Set of heads (17 mm, 19 mm, 30 mm for the hub nut).
• 🔨 Wheel bearing remover (or press).
• 🔥 Gas burner or construction hair dryer (for heating the hub when pressing).
• 📏 Torque wrench (hub nut tightening torque - 180–200 Nm).

Replacement process (using the example of the left hub):

Remove the wheel and brake drum (or disc)|Unscrew the hub nut (you will need an extension and a lever)|Disconnect the ABS sensor connector|Remove the hub from the beam (you may need a puller)|Install a new hub, lubricating the seat|Tighten the hub nut to torque 180 Nm-->

1. Removing the wheel and brake mechanism:

   Jack up the car and remove the wheel. If there is a drum, unscrew the guide pins (12mm head) and hammer the drum through the wooden spacer. On versions with disc brakes, remove the caliper (do not disconnect the brake hose!).

2. Unscrewing the hub nut:

   The hub nut is too tight - use 30mm head and a lever length of at least 50 cm. If the nut does not budge, process it WD-40 and wait 10 minutes. Do not use excessive force — you can break the thread on the axle shaft!

3. Removing the hub:

   After unscrewing the nut, the hub may “stick” to the beam. Gently tap it with a hammer through a copper drift. If that doesn’t help, use a puller or heat the hub with a burner (do not overheat the ABS sensor!).

4. Installing a new hub:

   Clean the seat on the beam from dirt and rust. Apply a thin layer copper grease to the contact surface. Install the hub and press it in until it stops (without distortions!). Tighten the nut in two stages: first by hand, then with a torque wrench.

After replacement necessarily check:

• 🔧 Wheel play (should be absent).
• 🚗 Test drive with acceleration up to 80 km/h - there should be no hum or vibration.
• 🔴 No ABS errors on the dashboard.

Typical replacement mistakes and how to avoid them

Even experienced craftsmen make mistakes that shorten the life of the new hub or lead to breakdowns. Here TOP-5 misses and how to prevent them:

• 🔨 Retightening the hub nut: A moment more 200 Nm deforms the bearing. Use a torque wrench!
• 🧲 Ignoring the ABS sensor magnetic ring: When installing the hub, check that the ring (if it is removable) is not warped or damaged.
• 🔥 Hub overheating during removal: Burner heating is more 200°C destroys bearing lubrication. Use a hair dryer or heat evenly.
• 🛠️ Savings on lubrication: The hub seat must be clean and lubricated (e.g. Loctite 8008). Dry installation leads to corrosion and play.
• 🚗 Failure to check wheel alignment: After replacing the hub, the alignment angles of the rear wheels may change. Make adjustments on the stand.

Pay special attention ABS sensor. On Almera G15 it often breaks when the hub is removed carelessly. If the ABS light comes on after replacement, check:

• The integrity of the sensor wire (should not be frayed or broken).
• Cleanliness of the magnetic ring (dirt or metal shavings distort the signal).
• Connection polarity (mixed “+” and “-” will lead to an error C1145).

⚠️ Attention: If, after replacing the hub, the car “pulls” to the side when driving in a straight line, most likely the hub was installed on the other side (left instead of right). They are easy to confuse in appearance!

Cost of work and spare parts: where is cheaper and more reliable?

Rear hub replacement prices Nissan Almera G15 vary depending on the region and type of service station:

Service type	Cost of work, ₽	Pros	Cons
Official dealer	5 000–7 000	Warranty on work, original spare parts	Expensive, long (registration for 1–2 weeks)
Specialized service station	3 000–4 500	Experience with Nissan, quickly	Quality depends on the craftsman
Garage/private master	1 500–2 500	Cheap, you can negotiate urgently	No guarantee, risk of “makeshift” repairs
Self-replacement	0 (if there is a tool)	Savings, quality control	Need skills and a puller

Saving tip: if you need a replacement bearing only (and not the entire hub), you can contact a bearing repair shop. The cost of pressing a new bearing (for example, SKF VKBA 3597) - about 2 000 ₽, which is 2–3 times cheaper than buying an assembled hub.

Where to buy spare parts:

• 🏢 Official dealers: Guaranteed original parts, but prices are inflated by 20–30%.
• 🌍 Online stores: Exist.ru, Autodoc.ru - often cheaper, but check the seller's reviews.
• 🏗️ Spare parts markets: You can bargain, but there is a high risk of running into a fake (especially brands SKF or NTN).

FAQ: answers to frequently asked questions

Is it possible to drive with a humming hub if there is no play?

No, you can't. The hum indicates wear on the bearing, which can fail at any moment. On Almera G15 this often leads to the wheel seizing at speed, which is life-threatening. The maximum permissible mileage with this symptom is: 500 km (to service station).

What is the resource of the original hub? Nissan?

Under normal operating conditions (without aggressive driving or off-road driving), the original hub serves 150,000–200,000 km. However, in Russian realities (reagents, pits) the resource is reduced to 100,000–120,000 km.

What happens if you don't replace the hub on time?

The consequences depend on the degree of wear:

• At the initial stage - accelerated tire wear and increased fuel consumption (up to +1 l/100 km).
• In case of critical wear - destruction of the bearing, damage to the brake disc and axle shaft. Repairs will cost 20 000–30 000 ₽.
• In the worst case, the wheel jams while driving, which will lead to an accident.

Is it possible to replace just the bearing and not the entire hub?

Technically yes, but it only makes sense if:

• The hub has no mechanical damage (cracks, wear of the seat).
• The bearing is replaced with a high-quality analogue (SKF, NTN).
• There is access to a press for pressing (manual installation with a hammer is not acceptable!).

In most cases, it is cheaper and more reliable to install the hub assembly.

Why did a new hum appear after replacing the hub?

Probable reasons:

• Bearing defects (especially with cheap analogues).
• The hub nut is not tightened correctly (too loose or too tight).
• Damage to the seat on the beam (boring is required).
• Distortions during installation (the hub should fit into place without effort!).

Solution: dismantle the hub and check all elements.