Front wheel drive system in a car Nissan Almera Classic is one of the most loaded nodes requiring regular attention. The inner CV joint, or constant velocity joint, plays a critical role in transferring torque from the transmission to the wheels, allowing the suspension to handle corners and road imperfections.
Many owners Almera Classic Face the problem of wear of this part, often confusing the symptoms of a broken internal joint with malfunctions of the external or wheel bearing. Understanding the design features specific to a given platform model Renault B0, will help you accurately identify the malfunction and carry out repairs in a timely manner, avoiding costly consequences for the transmission.
Design features and purpose of the unit
Inner CV joint on Nissan Almera Classic performs the function of compensating for changes in the length of the axle shaft during suspension operation. Unlike the outer joint, which is responsible for turning maneuvers, the inner joint must withstand the enormous axial loads that occur during acceleration and braking, while simultaneously moving along the axis.
The design of this element includes a cage, a separator and balls that roll along special grooves. The joint body fits tightly to the gearbox through an oil seal, and the shaft is connected to the wheel hub. Wear of any of these components leads to destruction of the unit and loss of vehicle controllability.
Feature Nissan Almera Classic is that the inner CV joint is often assembled with the axle shaft, although there are also separately sold covers or the hinges themselves on the market. This is important to consider when planning your renovation budget. Original part usually has an increased resource compared to cheap analogues, but its price is much higher.
⚠️ Attention: Operating a car with a completely destroyed internal CV joint can lead to the axle shaft flying out of the gearbox while moving, which will cause an instant loss of traction and control over the situation on the road.
Symptoms of malfunction and diagnostic methods
Problems with the internal CV joint can be determined by the specific sounds and sensations that arise when driving. Unlike the external hinge, which often crunches only when turning, the internal one gives itself away when driving in a straight line and especially during acceleration.
The most common symptom is a rhythmic knocking or vibration that gets worse when you press the gas pedal. If the vibration disappears when the pedal is released and resumes when the engine brakes, this is a sure sign of wear on the internal grooves of the joint. Sometimes the knocking noise is heard even at idle with the gear in gear.
Diagnostics requires a visual inspection and checking for clearances. It is necessary to jack up the wheel and try to shake the axle shaft along the axis. The presence of significant play indicates that wear of internal elements reached a critical point. It is also worth checking the integrity of the boot, since dirt getting inside speeds up wear significantly.
- 🔊 Characteristic metallic knock when starting abruptly or changing gears.
- 📉 Strong vibration of the body, transmitted to the steering wheel and floor of the car.
- 💧 Traces of grease on the inside of the wheel or gearbox housing.
- 🛠 Backlash of the axle shaft during mechanical swinging by hand.
- Knocking noise when accelerating
- Vibration on the steering wheel
- Visual play
- Creak when moving
Choosing a quality spare part: original or analogue
Spare parts market for Nissan Almera Classic offers a huge selection of options, from certified original parts to cheap Chinese copies. When choosing an internal CV joint, it is important to understand that saving on this unit can cost much more than the part itself, due to the risk of failure along the way.
Original article for inner CV joint Nissan Almera Classic (B10) is often denoted as 39450-ED00A or similar depending on the year of manufacture and engine type. However, even the original may have different build quality in different batches. Therefore, many experienced mechanics recommend proven replacement brands.
Among the reliable manufacturers stand out GKN (Spidan, Lokring), SNR and Japan Cars. These companies manufacture products to factory standards and often supply parts to manufacturers' production lines. Cheap analogues from little-known brands may have imperfect ball geometry, which will lead to rapid failure.
| Brand | Type | Approximate price | Resource |
|---|---|---|---|
| Nissan (OEM) | Original | High | 100,000+ km |
| GKN / Spidan | Premium analogue | Average | 80,000 - 120,000 km |
| Japan Cars | Middle segment | Low | 40,000 - 60,000 km |
| Unnamed China | Economy | Very low | Less than 20,000 km |
⚠️ Attention: When purchasing a spare part, always check that there is a protective cover and a lubricant kit in the package. The absence of a boot makes installation impossible without purchasing additional materials.
Preparation for replacement and necessary tools
Replacing the inner CV joint is a labor-intensive procedure that requires special tools and a pit or lift. You will need a set of wrenches, a jack, a circlip remover and a wheel wrench. Without the right tools, the process can take several hours.
Before starting work, it is necessary to prepare the workplace and ensure safety. The vehicle must be securely secured and the engine turned off. It is important to have a container on hand to drain the transmission fluid if you plan to remove the entire axle shaft.
- 🔧 A set of socket wrenches and a ratchet (heads for 17, 19, 30).
- 🔨 Hammer and mounting spatula for knocking out the axle shaft.
- 🛢 Container for collecting used oil from the gearbox.
- 🧤 Gloves and rags to protect hands and clean parts.
- 🚗 Jack and stands for the car.
☑️ Preparation for replacement
Step-by-step instructions for replacing the inner CV joint
The replacement process begins with dismantling the wheel and unscrewing the hub nut, which often becomes sour and requires considerable effort. After removing the wheel, you need to unscrew the caliper and brake disc to free the hub. This will give access to the outer CV joint and axle shaft.
Next, you need to disconnect the lower control arm or ball joint to remove the axle shaft from the hub. Be careful not to damage the gearbox seal. The axle shaft must be carefully removed from the differential by prying it up with a pry bar and placing a container for the leaked oil.
Removing the innermost hinge may require the use of a special puller or careful hammering through a wooden spacer. Install the new part in the reverse order, making sure to replace the retaining ring and oil seal. Replacing the oil seal required, since the old one often loses its tightness when removed.
1. Снять колесо.2. Открутить ступичную гайку (момент затяжки 190-210 Нм).
3. Отсоединить шаровую опору.
4. Выбить полуось из ступицы.
5. Снять полуось из КПП.
6. Заменить внутренний ШРУС.
What to do if the axle shaft cannot be removed?
If the axle shaft is stuck in the box, do not try to knock it out with a hammer on the end of the shaft - this may damage the splines. Use a pry bar to carefully pry the CV joint housing to slide the retaining ring out of its seat.
Assembly rules and final tightening
After installing the new inner CV joint and axle shaft in place, you must carefully check all connections. Make sure the retaining ring is completely seated in the groove inside the differential. This can be checked by slightly pulling the axle shaft towards you - it should be firmly fixed.
Assembling the units is done in the reverse order. It is important not to forget to put on a new boot and carefully fill it with special lubricant. Do not skimp on lubricant, since the service life of the hinge depends on its quantity and quality. After installing the wheel, you must tighten the hub nut to the required torque.
The final step is to check the oil level in the gearbox. If some of the oil leaks out during the replacement process, it must be topped up to normal. It is also worth conducting a test drive to make sure there are no vibrations or extraneous noise.
⚠️ Caution: Improperly tightening the wheel nut may cause the wheel bearing to fail or the connection to loosen, resulting in a serious accident. Use a torque wrench.
Owner Frequently Asked Questions (FAQ)
Is it possible to replace only the inner CV joint without replacing the entire axle shaft?
Yes, technically this is possible if the axle shaft is not otherwise damaged. However, in practice, it is often more profitable and reliable to change the axle shaft assembly, since the price difference is small, and the labor costs for pressing out the old CV joint and pressing in the new one can be high.
How often should CV joint boots be checked?
It is recommended to inspect the boots at every oil change or every 10,000 km. A damaged boot is a guarantee of quick failure of the hinge, as dirt and water will get inside.
Is it necessary to do a wheel alignment after replacing the axle shaft?
If you did not dismantle the suspension arms and did not change the silent blocks, then it is not necessary to do a wheel alignment. However, if the suspension geometry has been violated, checking the wheel alignment angles will not be superfluous.
What lubricant is best for CV joints?
Use only specialized molybdenum disulfide (MoS2) based lubricants. Conventional lithium greases (Litol-24) are not suitable, as they are quickly washed out and do not provide the necessary protection against high loads.
Why did the new CV joint start knocking immediately after replacement?
This may be due to incorrect installation of the retaining ring, a defective new part, or the fact that not only the CV joint has worn out, but also the seat in the gearbox, which requires replacing the differential.