Owners Nissan Almera Classic often encounter an unpleasant hum that appears when driving at high speeds. This sound, reminiscent of the howl of an airplane, most often signals critical wear. wheel bearing. Ignoring such a problem can lead to wheel jams and serious accidents, so timely diagnosis and replacement of the unit are mandatory safety measures.
The suspension design of this car is quite simple and reliable, but the service life of the components depends on operating conditions. In Russia, with our roads and climate, hubs require attention after 80-100 thousand kilometers. It is important to understand the difference between the front and rear axles, since repair technologies and components are fundamentally different here.
In this article we will look in detail at how to choose a quality wheel bearing, which brands offer the best value for money, and we will also give step-by-step instructions for replacing them yourself. You will learn what tools you will need and what nuances you should pay attention to so as not to spoil the threads or damage the ABS.
Signs of wear and diagnostics of the unit
The first and most important sign of failure hubs is a characteristic hum. Unlike rubber noise or aerodynamic whistles, bearing noise increases in proportion to wheel speed. If the hum intensifies during acceleration, but subsides when you release the gas, the problem is definitely in the wheel assembly.
The second important sign is a change in sound when turning. If the hum increases when turning left, it means the right wheel bearing is worn out (since it bears the main load). And vice versa: when turning right, the noise of the left node increases. This is a simple but effective method of initial diagnosis without a lift.
In addition to acoustic signals, you can notice wheel play. Raise the car on a jack, grab the wheel at the top and bottom and try to swing it towards you and away from you. If there is noticeable play and the kingpin is working properly, it means wheel bearing has critical wear and requires immediate replacement.
- 🔊 Constant hum, increasing with speed
- 🔄 Changes the tone of the sound when turning the steering wheel
- 🤏 Noticeable play in the wheel when rocking it with your hands
- ⚡ ABS activation or indicator on the dashboard
⚠️ Attention: If you feel vibration in the steering wheel or beating in the brake pedal, this may indicate not only the hub, but also a warped brake disc. Carry out a comprehensive diagnosis of the brake system before purchasing new parts.
Design features of the front and rear axles
You cannot assume that the hub on the Nissan Almera Classic is a universal part for all axles. The front suspension is made according to the MacPherson system, where the hub is attached to the steering knuckle through bolts and has an integrated magnetic ABS sensor. The rear axle here is of the beam type, and the hub is installed differently there, often in the form of a separate unit with a bearing.
The front hub is a one-piece assembly. This means that if a bearing fails, you cannot simply replace the inner race. Needs to be changed hub assembly with the outer bearing race. This design simplifies repairs, but increases the cost of the part compared to separate units.
The rear hub often has a feature in the form of a pressed-in ABS sensor, which can fail before the bearing itself. Sometimes owners are faced with a situation where the bearing is intact, but the sensor gives an error. In this case, only the sensor itself is changed, which is significantly cheaper than replacing the entire hub. However, the sensor is often assembled with a bearing, which complicates the task.
It is also important to consider the type of brake disc mounting. On the front wheels, the disc is attached to the hub via two bolts, and on the rear wheels – via four. When replacing the hub, it is necessary to check the condition of the bolt seats, since their tearing off or corrosion can make it impossible to attach the brake disc.
- 🛠 Front hub: non-separable, bolted to the steering knuckle
- 🚗 Rear hub: often replaced separately, but ABS sensor can be integrated
- 🔩 Number of disk mounting bolts: 2 front, 4 rear
- 📉 Resource: the front ones wear out faster due to braking loads
⚠️ Attention: When purchasing a rear hub, be sure to check whether it comes with or without an ABS sensor. Installing a part without a sensor on a car with ABS will cause an error to light up on the instrument panel and disable the security system.
- Never (still dear)
- Once when buying a used car
- Changed it myself
- Changed it at the service
Review of manufacturers and selection of spare parts
Auto parts market for Nissan Almera Classic overflowing with offers, from cheap Chinese knockoffs to premium Japanese brands. Choosing the right manufacturer is 80% of the success of a repair. A cheap bearing may not last even 10 thousand kilometers, becoming a source of strong noise and the risk of wheel jamming.
Original parts from Nissan (part number often starts with 40202) are considered the standard of quality, but are often overpriced due to dealer markup. However, the original packaging often contains products from the same manufacturing plants as high-quality analogues, just with different markings.
The best analogues, which enjoy well-deserved respect among mechanics, are brands SKF, FAG, TIMKEN and NTN. These companies specialize in bearings and guarantee a high service life. Products Koyo is also a great choice since it is a Japanese brand that often supplies assembly lines with parts.
No-name Chinese brands should be avoided, even if they claim to comply with ISO standards. The geometry of the bearing rings is often disrupted, which leads to the rapid appearance of backlash and destruction of the cage. Saving on such a part may cost you suspension and wheel repairs.
Comparison table of popular brands
| Brand | Country | Approximate price (before) | Reliability assessment |
|---|---|---|---|
| Nissan (Original) | Japan | 6500 rub. | Excellent |
| SKF | Sweden | 3200 rub. | Excellent |
| FAG | Germany | 3400 rub. | Excellent |
| NTN | Japan | 2800 rub. | Okay |
| Unnamed China | China | 900 rub. | Badly |
- 🏆 Market leaders: SKF, FAG, NTN, Koyo
- 🛡 Original: often repackaged products from the same factories
- ⛔ Avoid: brands without history and reviews, cheap China
- 💰 Price: a high-quality analog costs 2 times cheaper than the original
⚠️ Attention: Never install hubs with visible traces of rust on the seating surface. Even light corrosion can disrupt the seat geometry and cause the bearing to rotate in the steering knuckle.
What happens if you install a cheap bearing?
A cheap bearing will quickly collapse, which can lead to the wheel jamming while driving. This will cause loss of control and a serious accident. Also, broken balls can get into the brake system, blocking the disc.
Required tools for replacement
Replacing the hub with Nissan Almera Classic - a difficult task, requiring specialized tools. Without a hydraulic press or a powerful puller, it is almost impossible to replace the front hub in a garage, since it sits in the seat with a very large interference.
You will definitely need a set of sockets, including extensions and a wrench. Pay special attention to the 17 and 19 mm socket for unscrewing the bolts securing the hub to the steering knuckle. A wheel wrench is also useful for unscrewing the hub nut, which is tightened with a huge torque.
To remove and install the bearing itself, you will need a puller or a hydraulic press. It is highly not recommended to use a sledgehammer to knock out the hub, as you can damage the threads of the steering knuckle or the hub itself. If you do not have a press, it is better to contact a service station that has equipment for pressing.
- 🔧 Hydraulic press or bearing puller
- 🔑 Socket set: 17, 19, 21, 24 mm (for hub nut)
- 🔨 Hammer and punch (for accurate knocking out)
- 🧴 Penetrating lubricant WD-40 or equivalent
- 📏 Torque wrench for tightening bolts
☑️ Preparing to replace the hub
Step-by-step replacement instructions
We begin the process by lifting the car and removing the wheel. Unscrew the hub nut (it has a right-hand thread, but some models may have a left-hand thread, check the markings). Remove the brake caliper by unscrewing the two guide bolts and hang it on a wire so as not to damage the brake hose.
Next, you need to disconnect the ABS sensor from the steering knuckle. Be extremely careful, as the sensor wire often breaks exactly where it exits the housing. Remove the bolts holding the hub to the steering knuckle (usually two or three bolts) and tap the hub out from the inside using a hammer and spacer.
Now you need to press the old bearing out of the steering knuckle. This is done using a press or puller. After removing the old assembly, thoroughly clean the seat from dirt and rust. Install the new bearing using a mandrel, pressing only the outer race to avoid damaging the cage.
After pressing the bearing, install a new hub. Insert it into the steering knuckle and carefully hammer it in with a hammer or press until it stops. Secure the hub mounting bolts, tightening them to the torque specified in the specification (usually about 80-100 Nm). Don't forget to connect the ABS sensor.
It is important to tighten the hub nut correctly. It must be tightened with great force (about 180-200 Nm) to ensure bearing tension. After tightening, tighten the nut or install a new lock washer to prevent self-unscrewing. Install the wheel and lower the car.
Before installing a new hub, apply a thin layer of heat-resistant grease to the bolt seats and the hub itself. This will make future disassembly easier and prevent the threads from sticking to the knuckle.
The main mistake when replacing is hitting the inner ring of the bearing with a hammer. This destroys the separator and makes the part unusable. Always press down on the outer ring or use a mandrel.
Typical repair mistakes
One of the most common mistakes is not tightening the hub nut correctly. If you tighten it too loosely, the bearing will begin to play and quickly collapse. If you overtighten, the rotation jams and the unit overheats. Use a torque wrench, don't rely on instinct.
The second mistake is ignoring the state of the ABS sensor. Often, during dismantling, the old sensor breaks down and is replaced with a new one, but they forget to check the wiring. If the wire is broken inside the insulation, the ABS error will remain on constantly, even on a new hub.
It is also unacceptable to use old bolts securing the hub to the steering knuckle. These bolts are subject to shear and tension and may break if used repeatedly. Always use new fasteners, especially if they are rated 10.9 or higher.
Don't forget to check the condition of the CV joint boots. If the boot is torn, the lubricant has leaked out and the joint could wear out. Installing a new hub on a worn CV joint will cause vibration from the CV joint to be transferred to the new bearing, causing it to fail prematurely.
- ❌ Overtightening or undertightening of the hub nut
- ❌ Using old hub bolts
- ❌ Damage to the ABS sensor wire during dismantling
- ❌ Ignoring the condition of the CV joint boots
⚠️ Attention: After replacing the hub, be sure to check the ABS operation at low speed. If the system does not respond or an error message is displayed, check the connector connection and the integrity of the sensor wiring.
Prices and replacement times
Hub replacement cost Nissan Almera Classic varies depending on whether you do it yourself or contact a service. On average, work at a service station to replace one front hub costs from 1,500 to 2,500 rubles. The rear hub is replaced faster and cheaper - about 1000-1500 rubles.
Repair time depends on the qualifications of the technician and the availability of tools. An experienced mechanic with a press will be able to replace the front hub in 1-1.5 hours. In garage conditions, in the absence of a press, the process may take 3-4 hours or require contacting specialists.
If you choose to replace it yourself, consider the cost of the tool. Buying a puller or renting a press can cost from 500 to 1000 rubles. As a result, if you have the tools, you will save about 2000-3000 rubles on one axis.
Parts prices also vary greatly. As we have already noted, the original is expensive, but a high-quality analogue is available at a price of 2500-3500 rubles. In total, a complete turnkey replacement of the front hub (spare part + labor) will cost 4,000-6,000 rubles.
- 💵 Work at a service station: 1500-2500 rubles. for the front, 1000-1500 rubles. by the ass
- ⏱ Repair time: 1-1.5 hours at a professional service station
- 🛒 Spare part (analogue): 2500-3500 rub.
- 🔧 Tool: rent a press or buy a puller
How long will a new hub last?
With proper installation and the use of high-quality spare parts (SKF, FAG, NTN), the hub will last from 60 to 100 thousand kilometers. In difficult conditions (mud, off-road), the resource can be reduced to 40 thousand.
Frequently asked questions (FAQ)
Is it possible to replace just the bearing and not the entire hub?
Theoretically, it is possible if you have a hydraulic press and the skills to work with it. However, in practice this is often impractical, since the hub can be deformed and the seats worn out. It is easier and more reliable to replace the hub assembly, which guarantees tightness and correct tension.
Why does the new hub hum immediately after replacement?
This may be due to several reasons: poor quality part (defect), incorrect installation (misalignment during pressing) or damage to the ABS sensor. It is also possible that the hub nut was not tightened to the correct torque. Check the tightness and absence of play.
Do I need to replace hubs in pairs?
It is recommended to change hubs in pairs on the same axle if they have the same mileage and operating conditions are similar. If one hub fails after a mileage of 100 thousand km, then the second one is most likely also close to critical wear. This will save time and money in the future.
How to determine which hub is worn: left or right?
Use the turning rule: if the noise gets louder when turning left, the right hub is worn out. If you turn right, turn left. You can also rock the wheel with your hands: the play will be felt specifically on the worn unit.
Is it possible to drive with a faulty hub until it is replaced?
Strongly not recommended. Bearing wear can cause it to seize, causing the wheel to lock while driving. This is fraught with loss of control, skidding and a serious accident. It is also possible for the wheel to break and become separated from the vehicle.
Replacing the hub with Nissan Almera Classic is a demanding procedure that requires attention to detail and the right tools. Do not skimp on the quality of spare parts and do not neglect recommendations for tightening fasteners. Regular suspension diagnostics will help you avoid sudden breakdowns and ensure driving safety.