Rear hub on Nissan Almera Classic is a consumable item that fails over time due to constant load and exposure to road reagents. A characteristic sign of a malfunction is an increasing hum, which changes tone depending on the speed of the vehicle. Ignoring this problem can lead to wheel jamming or destruction of the bearing inside the hub, which is dangerous for driving the machine.
The replacement process is not overly complicated, but requires specific tools and an understanding of the rear suspension design. You will need a jack, a set of sockets, a bearing puller (or press), and perhaps the help of a partner to hold the suspension components. If you plan to do the work yourself, it is important to prepare the site in advance and stock up on high quality spare parts.
Fault diagnosis and parts selection
Before proceeding with dismantling, it is necessary to ensure the accuracy of the diagnosis. The knocking sound of a wheel bearing is often confused with a faulty shock absorber or control arm silent blocks. Listen to the car: the hum should be monotonous and intensify during acceleration. Try rocking the wheel in a vertical plane with the car raised - play will indicate a clear problem.
When choosing a new spare part, it is important not to make a mistake with the manufacturer. Original hub from Nissan is expensive, but provides a long service life. An alternative is high-quality analogues from brands SKF, Koyo or FAG. Avoid cheap Chinese fakes that can fall apart after just a couple of thousand kilometers.
Please note that the ABS sensor is included in the kit. On Nissan Almera Classic The rear hub is often sold complete with a magnetic ring and ABS connector. If your sensor is working properly and has complete wiring, you can buy just the hub itself, but replacing the complete kit is more reliable.
- ✅ Check the condition of the brake disc before purchasing a hub
- ✅ Compare the part numbers of the old and new parts before installation
- ✅ Make sure the ABS sensor has a sealed connector without oxidation
⚠️ Attention: If during diagnostics you find that the hub has obvious play, do not delay replacement. Bearing failure can cause the wheel to seize while driving, which can lead to a serious accident.
Necessary tools and preparation
To successfully complete the work, you will need a standard mechanic's kit, supplemented with specialized tools. Without a bearing puller or a powerful press, replacement will be extremely difficult, since the hub fits very tightly. You also cannot do without a torque wrench to properly tighten the bolts.
Prepare a jack and reliable stands for the body. Working on one jack support is strictly prohibited. Clear the trunk of excess items so as not to interfere with access to the rear of the car. Check for penetrating oil as the mounting bolts may be rusted.
- 🛠️ Socket set (including 19, 21, 24 mm socket)
- 🛠️ Wheel bearing puller or hydraulic press
- 🛠️ Torque wrench and hammer with a set of drifts
☑️ Preparation for replacement
Pay special attention to the condition of the brake system. When removing the caliper, be careful: do not let it hang on the brake hose; hang it on a wire or hook. This will prevent damage to the rubber hoses and leakage of brake fluid.
⚠️ Attention: Do not unscrew the bolt securing the hub to the axle shaft until the wheel is completely removed from the vehicle. This will ensure the part is fixed and safe during operation.
The process of dismantling the old hub
Start by jacking up the car and removing the rear wheel. Next you need to remove the brake caliper. Unscrew the two bolts securing the caliper, carefully remove it and set it aside. After this, unscrew the guides of the brake disc and remove it. If the disc is stuck, gently tap it with a hammer through the wooden spacer.
The next step is to disconnect the ABS sensor. Find the connector, unclip the latch and move the wire to the side so that it does not interfere with further manipulations. Then you need to unscrew the bolt that secures the hub to the axle shaft. This bolt is often over-tightened, so a long lever or impact driver may be required.
After unscrewing the bolt, the hub may not come out immediately. Use a puller or carefully knock it out with a hammer from the inside. If the bearing is jammed, you will have to use a press. Be careful not to damage the threads on the axle shaft, as they may be needed when installing a new part.
- 🔧 Disconnect the ABS sensor wire before starting to knock out the hub
- 🔧 Use a copper spacer to protect the axle shaft threads when knocked out
- 🔧 Clean the seat in the steering knuckle from rust and dirt
- Bearing puller
- Hydraulic press
- Percussion instrument
- It’s okay, I’ll knock it out with a hammer
If you use a puller, install it so that it presses on the inner race of the bearing or on the hub itself. Tighten the puller screws evenly while monitoring the process. Do not use excessive force to avoid deforming the steering knuckle.
What to do if the hub bolt does not come off?
If the bolt does not budge, try using WD-40 or equivalent penetrating lubricant. Heat the bolt with a heat gun or torch to expand the metal. Sometimes hitting the head of the bolt with a hammer to break up the rust helps. As a last resort, you can use a high-lever impact driver, but be careful not to strip the slots.
New hub installation and assembly
Before installing the new hub, thoroughly clean the seat in the steering knuckle. Make sure there are no burrs or rust. Apply a thin layer of heat-resistant lubricant to the seat, but do not use too much to avoid lubricant getting on the brake pads.
Install the new hub into the steering knuckle. If it is difficult to fit, use a press or puller to press it in evenly. Do not hit the end of the hub with a hammer, as this may damage the bearing. Impacts should be applied only through the spacer on the inner ring.
Tighten the bolt securing the hub to the axle shaft. Tighten it to the recommended torque using a torque wrench. After this, reinstall the brake disc and caliper. Remember to connect the ABS sensor connector and make sure the wire does not touch any rotating parts.
- 🔩 Tighten the hub bolt to the torque specified in the owner's manual
- 🔩 Check that the ABS sensor does not touch the disc and is not pinched
- 🔩 Install the wheel and lower the car to the ground for final tightening
Proper tightening of the hub bolt is the key to bearing longevity. Insufficient tightening will lead to play and rapid wear, and excessive tightening will lead to deformation of parts.
After assembly, be sure to check the operation of the brakes and ABS sensor. When you first start the engine, the ABS error lamp may come on, which should go out after a few kilometers, as the system needs time to adapt.
Features and Compatibility Table
For ease of selection of spare parts, below is a table with the main characteristics of the hub for Nissan Almera Classic. This information will help you ensure that you are purchasing the correct part for your model.
| Parameter | Meaning | Note |
|---|---|---|
| Hub diameter | 42 mm | Suitable for axle bolt |
| Number of holes | 4 | Distance between centers |
| Bearing type | Ball, double row | Closed type |
| Availability of ABS | Yes | With magnetic ring |
| Bolt tightening torque | 170-200 Nm | Be sure to use a dynamometer |
Please note that tightening torques may vary slightly depending on the year of the vehicle. Always check the technical documentation of the specific instance. Using incorrect tightening torques may cause the threads to break or the fastener to become loose.
⚠️ Attention: If you are not sure about the correct tightening torque, contact a specialized service. An incorrectly tightened hub bolt can cost you your life when driving at high speed.
After replacing the hub, test drive at low speed to check for vibration and noise. If the hum remains, the problem may be in another suspension unit.
Common mistakes when replacing
Many car owners make the same mistakes when replacing a hub. One of the most common is trying to knock out the old hub with a hammer without a puller. This often leads to damage to the steering knuckle, which will have to be replaced as an assembly, which will significantly increase the cost of repairs.
Another mistake is ignoring the status of the ABS sensor. If the connector is oxidized or the wire is frayed, the new hub may not work correctly and the error lamp will remain on constantly. Check the integrity of the wiring before starting work.
Also, do not skimp on lubrication. Use only special heat-resistant greases for wheel bearings. Conventional lithium grease can dry out or leak, causing rapid failure of the new unit.
Don't forget to clean the threaded connections. If the bolts are heavily rusted, treat them with a penetrating lubricant before reassembling. This will make subsequent disassembly easier and prevent sticking.
Why does the hub get hot after replacement?
If the hub gets hot immediately after installation, this may indicate that the bolt was not tightened correctly or the bearing was damaged during installation. Check the tightening torque and the absence of distortions.
Result verification and maintenance
After completing the work, be sure to check the chassis for play. Rock the wheel in different planes - the hub should be rigid. Spin the wheel by hand to make sure there are no jams or unusual sounds.
In the first days after replacement, pay special attention to the behavior of the car. If you notice even a slight hum or vibration, stop immediately and check the tightness of all connections. Catching the problem early will save you time and money.
Check the condition of the hub and ABS sensor regularly. Cleanliness and absence of corrosion are the key to long service life of the components. When washing your car, pay attention to the hub area, washing away dirt and reagents.
- 🔍 Regularly inspect the hub for signs of overheating
- 🔍 Monitor the integrity of the anthers and protective caps
- 🔍 Check the operation of the ABS sensor using a diagnostic scanner
Properly replacing the hub is not only about restoring the vehicle's performance, but also about guaranteeing your safety. Do not neglect the recommendations and use only high-quality spare parts.
Regular diagnostics and timely replacement of worn parts is the best way to avoid expensive repairs and accidents on the road.
How to understand that the hub has become unusable?
The main symptom is a characteristic hum, which intensifies with increasing speed and changes when turning. Wheel play may also appear when you shake your hands.
Is it possible to replace only the bearing and not the hub assembly?
Theoretically it is possible, but Nissan Almera Classic this is a labor-intensive procedure that requires a press. Most often, it is more profitable and reliable to replace the hub assembly with bearing and ABS sensor.
What tool is needed to tighten the hub bolt?
A torque wrench is required that can handle a tightening torque of about 170-200 Nm. Using a regular wrench does not guarantee correct tightening.
What should I do if the ABS sensor does not work after replacement?
Check the integrity of the wire and connector. Make sure the magnetic ring on the hub is not damaged. The contacts may need to be cleaned or the sensor replaced.
How long does it take to replace a hub?
If you have the necessary tools and experience, the work takes from 1 to 2 hours per wheel. Without experience and a puller, the process can take all day.