Diagnostics and symptoms of malfunction
Owners Nissan Almera Classic often face the problem of wear of the chassis, especially on runs over 80,000 km. A sound resembling the drone of an airplane or an increasing howl that intensifies as you turn is a classic symptom of failure. hubs wheels. Ignoring this signal can lead to wheel jamming while driving or destruction of the steering knuckle, which will make repairs much more expensive.
Features of the suspension design Nissan Almera Classic is the use of a non-separable wheel bearing assembled with a flange. This means that if play or noise occurs, the part must be completely replaced rather than repaired. Diagnostics is carried out on a pit or a lift: the wheel is raised and it is rocked by hand in different planes to identify play.
It is important to distinguish bearing noise from worn shock absorbers or ball joints. If the hum changes when the steering wheel is shifted (for example, when turning right, the load is transferred to the left wheel, and if the noise disappears, the problem is in the left bearing), this is 100% confirmation of the diagnosis. Diagnostics must be carried out in a timely manner to avoid an emergency.
Selection of components and consumables
The quality of the spare part directly affects the resource of the unit. For Nissan Almera Classic (based on the Nissan B13/B14 platform), the market offers many options: from original parts to high-quality analogues. Original from Nissan (code 40202-3Y000) is considered the standard, but its cost is often inflated, which forces car enthusiasts to look for alternatives.
The most popular and reliable analogues are brands SNR, NTN, SKF and Koyo. These manufacturers supply parts to the assembly lines of many auto giants, so their products guarantee high precision and durability. Avoid purchasing spare parts from little-known Chinese brands without reviews, as they may fail after 5-10 thousand kilometers.
In addition to the bearing itself, you will need consumables for proper installation. Be sure to replace self-locking nut hub, since the old nut will not provide the required tightening force. You will also need new wheel mounting bolts if the old ones are deformed, and high-quality lubricant for CV joint and hub assembly.
- 🛠️ Original bearing Nissan - maximum reliability, but high price.
- 🛠️ Analogue SNR - excellent balance of price and quality, often available as an OEM spare part.
- 🛠️ Lubrication type Mobil XHP or equivalent - for protection against corrosion and overheating.
- Original Nissan
- SNR/NTN
- SKF/FAG
- Chinese analogues
Necessary tools and preparation
The process of replacing a wheel bearing Nissan Almera Classic requires special tools. It is extremely difficult to do without a special bearing puller or a powerful press in a garage, since pressing in and out requires considerable effort. You will need: jack, trestle stands, a set of keys and sockets (including 19, 21, 30 mm), as well as impact screwdriver or a bit for loosening the hub bolts.
To remove the hub nut you will need a powerful wrench or extension cord, since the tightening torque of the original nut is about 200 Nm. Often the nut becomes sour or deformed, so stock up on penetrating lubricant (such as WD-40 or Liquid Wrench) and a hammer for knocking it down. If you don't have an air nut, the loosening process can take a long time.
Remember about safety precautions: the car must be securely supported on stands, and not just on a jack. Working under a machine that is on a jack is strictly prohibited. Prepare a place to store the removed parts so as not to lose small bolts and washers.
- 🔧 Puller for wheel bearings or hydraulic press.
- 🔧 Head set with ratchet and extensions (including large diameters).
- 🔧 Hammer and a chisel for dismantling stuck elements.
☑️ Replacement tools
Step-by-step replacement instructions
Start by removing the wheel and caliper. Unscrew the two bolts securing the caliper guides, move it to the side and tie it with wire so as not to damage the brake hose. Next, remove the brake disc by unscrewing the two guide screws. If the disc gets stuck, gently tap it with a hammer through a piece of wood.
The next step is removing the hub. Unscrew the hub nut (it has a right-hand thread). After this, disconnect the ball joint from the steering knuckle and disengage the axle shaft from the hub. Hub is removed together with the bearing. If it doesn't fit, use a puller to remove the hub from the steering knuckle.
Now you need to press the old bearing out of the steering knuckle. This is the most time consuming part. The fist must be clamped in a vice, and using a puller or press, press the bearing out of the seat. Never try to knock a bearing directly onto the ring with a hammer - this will destroy its structure and seats. If the bearing has fallen apart, first knock out the inner ring, then the outer one.
After pressing out, thoroughly clean the seat in the fist from rust and dirt. Press the new part strictly along the outer ring, leaning on the steering knuckle body. After installing the bearing, press the hub into the inner race of the bearing. Make sure the hub is pushed in all the way.
- 🛑 Remove the brake caliper and secure it so as not to damage the hose.
- 🛑 Unscrew the hub nut and disconnect the suspension arms.
- 🛑 Press out the bearing from the fist without damaging the landing surfaces.
What to do if the hub nut does not unscrew?
If the nut does not budge, use heat (a heat gun) around the nut and simultaneously hit the end with a hammer. Sometimes using a long lever (pipe) on the crank helps, but be careful not to break the control arm.
Before assembly, be sure to clean the seats from rust and apply a thin layer of lubricant to avoid the hub from sticking in the future.
Assembly and adjustment of the unit
Assembly is carried out in reverse order. Install the steering knuckle with the new bearing in place, connect the ball joint and axle shaft. Tighten the hub nut to the torque recommended by the manufacturer. For Nissan Almera Classic this value is usually 190-200 Nm. Use a torque wrench for precise tightening.
After installing all parts, check the play. The wheel should not have axial or radial play. Rotation should be smooth, without jamming or extraneous sounds. Install a new nut locking mechanism (if provided by the design) and bend it onto the face of the shaft to prevent self-unscrewing.
Don't forget to adjust the wheel alignment angles (wheel alignment). Any intervention in the suspension, especially disconnecting the arms, throws off the geometry. Without the correct settings wheel alignment The car may pull to one side and the tires will wear unevenly over several hundred kilometers.
| Parameter | Meaning | Note |
|---|---|---|
| Hub nut tightening torque | 190-200 Nm | Be sure to use a new locknut |
| Wheel bolt tightening torque | 110 Nm | Tighten crosswise |
| Caliper bolt tightening torque | 25-30 Nm | Check the condition of the anthers |
| Bearing life | 80-100 thousand km | Depends on the quality of the spare part and the roads |
Correct tightening of the hub nut is critical: an under-tightened nut will lead to rapid wear, and an over-tightened one will lead to bearing failure.
Frequent errors and operating nuances
One of the most common mistakes is trying to press the hub into a new bearing without removing the outer ring or with an inaccurate impact. This leads to damage to the raceways even before use. Installation should be done exclusively with a press or puller, applying uniform force.
Many mechanics forget to check the condition of the CV joint boot after removing the axle shaft. If the boot is torn, dirt has already entered the grenade, and after a while it will begin to crunch. When replacing a bearing, always inspect the boot and replace it if necessary.
It is also worth paying attention to the condition of the brake discs. If they are worn out or runout, replacing the bearing may not solve the problem of vibration when braking. It is recommended to carry out a comprehensive check of the chassis and brake system.
Why can a bearing fail prematurely?
A common cause is driving in deep water or mud, which washes away the lubricant and causes corrosion. Also affected by improper tightening of the hub nut and the presence of hidden defects in the steering knuckle.
FAQ: Answers to frequently asked questions
How long does it take to replace a wheel bearing?
For one wheel, with experience and the right tools, the process takes from 1.5 to 2.5 hours. If there is no puller or the bearing is stuck, the time may increase.
Is it possible to replace just the bearing without replacing the hub?
Technically this is possible if the hub is not worn or scuffed. However, in practice, hubs are often deformed, and it is easier, and sometimes cheaper, to replace the assembly or a high-quality analogue of the bearing with the hub.
Is it necessary to do a wheel alignment after replacement?
Yes, definitely. Any disconnection of the suspension arms changes the wheel alignment angles. Without adjusting the geometry, the car will be unstable on the road, and the tires will quickly become unusable.
What should I do if the bearing hums immediately after replacement?
This may be the result of incorrect installation, misalignment or defective parts. It is also possible that the hub nut was overtightened or undertightened. Check the tightness and absence of play.