Operation Nissan Almera Classic inevitably leads to wear of the chassis elements, and one of the most common problems is the failure of the constant velocity joint. This unit, which is responsible for transmitting torque from the gearbox to the wheels, experiences enormous loads, especially during aggressive driving or poor road surfaces. Understanding of operating principles wheel drive will help the owner to notice a malfunction in a timely manner and avoid costly suspension repairs.
Ignoring symptoms such as a characteristic crunch or vibration can lead to the mechanism jamming while moving, which can have serious safety consequences. CV joint replacement - this is a procedure that can be completely done independently, if you have the necessary set of tools and basic skills in working with a car. In this article we will analyze in detail how to carry out diagnostics, select the appropriate part and correctly replace the unit without contacting a service center.
Drive fault symptoms and diagnostics
Determine what outer CV joint or the internal mechanism has become unusable, this can be determined by a number of specific signs that appear during the movement. The clearest indicator of a problem is a metallic crunch that occurs when the steering wheel is turned towards the faulty side. This sound is caused by worn balls starting to skip tracks, creating shock as they rotate under load.
Vibration in the steering wheel or the entire body, which increases during acceleration, often indicates wear and tear. internal tripod. Unlike the outer joint, which reacts when turning, the inner mechanism responds to changes in load when accelerating or braking. If you feel a beating that goes away when you release the gas, but returns when you press the pedal, you need to urgently check the condition of the drive.
Also, a visual inspection can reveal critical damage to the anthers. Torn CV joint cover means that the lubricant has flown out and sand, water and dirt have gotten inside. Even a small cut on the rubber over time leads to complete destruction of the mechanism due to abrasive wear. Regularly checking the integrity of the boots is the cheapest way to extend the life of expensive parts.
- A crunching sound when the steering wheel is turned all the way is a classic sign of wear. outer hinge.
- Vibration during acceleration and vibration at idle are a sure symptom of problems with the internal CV joint.
- The presence of grease on the inside of the wheel or oil pan indicates a rupture of the boot.
Selection of quality spare parts and components
When purchasing new parts for Nissan Almera Classic It is important not to focus solely on the low price, since cheap analogues often fail after a few thousand kilometers. The market offers both original Nissan spare parts and high-quality substitutes from leading global manufacturers, such as Loebro, GKN or Spicer. The original unit is characterized by perfect balancing and durability, but its cost can be significantly higher than its analogues.
If your budget is limited, you should pay attention to trusted brands that specialize in transmission elements. It is important to check the packaging for the presence of holograms and the casting quality of the part itself. Dirty castings, burrs or play in the spline joint will immediately indicate poor quality of the product. High quality boot must be made of frost-resistant rubber or silicone so as not to crack in the cold.
When replacing, it is recommended to immediately purchase a complete set: the hinge itself, boot, retaining ring and a special set of lubricant. Using standard lithium grease instead of a specialized one for CV joints is unacceptable, since it is quickly washed out and does not provide the necessary protective properties. The correct choice of components is a guarantee that the repair will be completed once and for a long time.
- Choose brands Loebro, NTN or original Nissan for maximum reliability.
- Check the integrity of the packaging and the presence of factory protection holograms.
- The kit should include a retaining ring and lubricant designed specifically for CV joints (usually with the addition of molybdenum disulfide).
β οΈ Attention: Installing a used CV joint or a reconditioned unit is strictly not recommended, since you cannot know the real service life of such parts, and the risk of repeated failure on the road is extremely high.
- Original Nissan
- Loebro
- GKN
- Cheapest available
Necessary tools and workplace preparation
To complete the job of replacing the drive, you will need a standard mechanic's kit, supplemented with specific tools for removing the hub nuts. Huge collar and a 30 or 32 mm head (depending on the year of manufacture and modification) are required, since the hub nut is tightened with a large torque. Without a long lever, it is almost impossible to unscrew it, even if the car is already jacked up.
You will also need a puller for ball joints, a pry bar for pressing the drive out of the gearbox, a set of socket heads and wrenches. For working in cramped conditions, a cardan coupling and extension cords are very useful. Do not forget to prepare a jack and reliable trestle stands, since working under the machine with only a jack is dangerous. Ball joint puller Can be replaced with a powerful mounting paddle if you have enough experience and strength.
Prepare a container to drain the oil from the transmission if you need to remove the drive to access the inner CV joint. You will also need rags, brake cleaner and a container for old grease. The workplace should be well lit and the surface should be level and hard. The presence of a pit or a lift will greatly simplify the process, but if there are none, you can get by on a flat area using stands.
- A socket with a 30/32 mm head for the hub nut is required.
- Ball joint puller or heavy-duty pry bar to remove the arm.
- Penetrating lubricant (such as WD-40 or equivalent) for treating rusted joints.
βοΈ Preparation for replacing the CV joint
Removing the old drive and preparing for installation
The first stage of work is to remove the wheel and hub nut. If the nut has a protective cover, it must be removed, and then, fixing the brake disc, unscrew the nut with a wrench. After this, jack up the car and place it on stands. Remove the wheel and unscrew the bolts securing the ball joint to the steering knuckle. To facilitate dismantling, you can generously spray the joint with penetrating lubricant.
After disconnecting the ball joint, carefully move the steering knuckle to the side. The inner CV joint is secured in the gearbox housing with a spline joint and a retaining ring. To remove it, use a pry bar, carefully prying the unit in the area where it is attached to the gearbox. Do not try to knock out the drive with a hammer, as this may damage the transmission seal or differential gears. Careful dismantling will preserve the integrity of other transmission components.
If you are replacing only the outer CV joint, the entire drive can be removed and disassembled on a workbench. To do this, you need to clamp the hub in a vice (through wooden spacers) and knock out the hinge using a hammer and drift. If you are changing the internal assembly, then after removing the drive from the box, you must drain the oil so that it does not leak out during further manipulations. Wipe the hub splines and the seating area in the gearbox from dirt.
β οΈ Attention: When removing the inner CV joint from the gearbox, oil may spill out. Be sure to replace the container and be prepared for the fact that the oil level in the gearbox will have to be replenished after repair.
How to correctly knock out an outer CV joint
Clamp the hub in a vice using wooden blocks to avoid damaging the threads. Apply blows with a hammer to the end of the CV joint shaft strictly in the center to avoid distortion. If the splines are stuck, use penetrating lubricant and heat (if the material allows), but do not overheat the parts until the metal changes color.
Installation of a new unit and assembly
Before installing a new drive, all surfaces must be thoroughly cleaned of old grease and dirt. Place the new boot on the shaft, making sure it is not twisted, and secure it with a clamp on the joint side. Apply new grease to the inside of the boot and to the hinge mechanism, following the manufacturer's instructions. Lubricant quantity should be sufficient, but not excessive, so that when heated, the boot does not burst under pressure.
Install the new CV joint onto the shaft, carefully driving it with a hammer through the wooden spacer until it stops. Make sure the retaining ring is seated and there is no play in the shaft. Secure the boot with a clamp on the other side using special clamps or clamps. When installing the inner CV joint into the transmission, insert it until it clicks, which indicates that the lock ring has engaged. Check the secure fit by slightly pulling the drive towards you.
Reassemble the assembly in the reverse order: connect the steering knuckle to the ball joint, tighten the fastening bolts to the required torque. Install the hub nut and tighten it with a wrench, securing the brake disc. After lowering the vehicle to the ground, finally tighten the hub nut with a torque wrench. Don't forget to check the gearbox oil level and add it if necessary.
- Apply lubricant to the hinge and inside the boot before installing the clamps.
- Check that the boot is not twisted and does not have any creases when clamping the clamps.
- Tighten the hub nut to the recommended torque after lowering the machine.
Before clamping the clamps onto the boot, inflate it a little with air to make sure that it is not twisted or has internal creases that could lead to rupture during operation.
Quality check and test drive
After assembly, it is necessary to conduct a visual inspection of all connections and make sure that there are no oil leaks from the gearbox. Try shaking the drive by hand to check for any play in the ball joints and the CV joint itself. Start the engine and check the transmission in place by shifting gears and making sure there are no unusual sounds or vibrations. Tightening control all bolts and nuts - a mandatory step before starting to move.
The first test drive should be careful. Drive straight ahead for a bit, then try making smooth turns left and right. Listen for any crunching or clicking noises. Pay attention to whether vibration occurs during acceleration. If everything is normal, you can gradually increase the speed and load. If you detect any unusual sounds or vibrations, stop driving immediately and check the quality of the assembly.
During the first few days of operation, pay special attention to the condition of the anthers. Make sure that the grease is not squeezed out from under the clamps and that the rubber is not deformed. If you did everything correctly, the new part will last a long time, and the car will drive smoothly and confidently. Regularly checking the condition of the drives at every oil change is the key to your safety on the road.
A correctly installed CV joint should not make any sounds when moving, and the boot should remain sealed and have no signs of lubricant leakage.
| Parameter | Value for Nissan Almera Classic |
|---|---|
| Hub nut diameter | 30 mm or 32 mm |
| Recommended CV joint brand | Loebro, GKN, Nissan (OEM) |
| Lubricant type | With molybdenum disulfide (MoS2) |
| Wheel nut tightening torque | 190-210 Nm (depending on year) |
| Transmission oil volume | 2.3 - 2.5 liters |
Common replacement mistakes and how to avoid them
One of the most common mistakes is skimping on lubricants or using inappropriate compounds. Conventional lithium grease quickly loses its properties at high temperatures and loads, which leads to rapid wear of the joint. They also often forget to replace the retaining ring, which loses its elastic properties over time. Using an old ring may cause the drive to fall out of the gearbox.
Another mistake is incorrect installation of the boot. If you twist it or do not tighten the clamps tightly, dirt and water will get inside, which will kill the new unit in a few thousand kilometers. Often, mechanics forget to check the condition of the gearbox seal when removing the inner CV joint. If the oil seal is worn out, oil will leak out, which will require further repairs. Mindfulness will save you time and money at every stage of work.
Improperly tightening the hub nut can also cause serious problems. A tightening that is too weak will cause play in the wheel bearing, and a tightening that is too strong will cause deformation of parts or stripping of threads. Always use a torque wrench for final tightening. Compliance with technology installation is a guarantee that the repair will be successful and durable.
β οΈ Caution: Do not use an air impact wrench to tighten the hub nut without checking with a torque wrench - this will almost certainly result in incorrect torque.
FAQ: Answers to popular questions
Is it possible to replace only the outer CV joint without removing the entire drive?
Yes, it's possible. To do this, you need to remove the drive assembly, clamp the hub in a vice and knock out the outer hinge. Then install a new unit and put everything back together. This saves time as there is no need to drain the gearbox oil.
What is the service life of the CV joint on a Nissan Almera Classic?
On average, a high-quality CV joint lasts from 100,000 to 150,000 km. However, service life greatly depends on driving style, road conditions and the integrity of the boots. If the boot ruptures, the service life can be reduced to several thousand kilometers.
Why does the CV joint crunch only when cold?
This may indicate the early stages of wear or that there is not enough lubrication in the joint. When the metal warms up, it expands and the gap may decrease, causing the crunch to disappear. But such a symptom cannot be ignored - the node requires replacement.
Is it necessary to change the gearbox oil after replacing the inner CV joint?
If you drained the oil to access the inner joint, then you need to add it to the level. If the oil did not drain, but simply leaked out a little during extraction, it is enough to simply add the lost volume. It is recommended to change all the oil only with high mileage.
Is it possible to drive with a torn boot?
Strongly not recommended. Even short-term driving with a damaged boot leads to abrasive getting inside the joint. This causes rapid wear, and the CV joint can break while driving, blocking the wheel.