Chassis life of any car, including popular ones Nissan Almera Classic, directly depends on operating conditions and the quality of the road surface. The rear shock absorbers in this model often fail prematurely due to the design of the rear suspension and the high axle load when carrying cargo. Ignoring signs of malfunction can lead not only to deterioration in handling, but also to accelerated wear of other chassis elements.
Timely diagnosis and replacement rear shock absorbers are critical to staying safe on the road. Many car owners put off visiting a service station, attributing extraneous knocking noises to the “old age” of the car, but this is a mistake that can be costly. In this article we will analyze in detail the replacement process, the nuances of choosing spare parts and technical subtleties, which are often silent about in general instructions.
Diagnosis of faults and signs of wear
Determine what Nissan Almera Classic requires replacement of shock absorbers, this can be done not only with specialized equipment, but also with indirect signs noticeable during everyday driving. The first warning sign is often a characteristic knock or thump when driving over uneven surfaces, especially when cornering or during heavy braking. If you feel that the car has become less stable and is starting to “whirl” on bumps, this is a sure sign of loss of damping properties.
A visual inspection also provides a lot of information about the technical condition of the suspension. Pay attention to the presence of oil smudges on the body shock absorber strut. Even a minimal amount of oil indicates destruction of the seals and loss of tightness, which makes further operation of the unit unacceptable. In addition, check the condition of the rubber bumpers and anthers - their destruction is often a harbinger of an imminent breakdown of the shock absorber itself.
- 🚗 The appearance of strong body rolls when cornering.
- 💧 Visible traces of oil on the shock absorber body, especially in the upper part.
- 🔊 Characteristic knocking noises in the rear of the car when passing speed bumps.
- 🛞 Uneven tire wear, especially on the inside or outside of the tread.
Selection of quality spare parts and components
The auto parts market offers a huge range of products, and choosing the right manufacturer for Nissan Almera Classic - that's half the success. Original shock absorbers from Nissan provide the optimal balance of comfort and handling, but can be expensive. Many owners choose proven replacement brands that offer excellent value for money.
When purchasing, it is important to pay attention not only to the brand, but also to the type of shock absorber: oil, gas or gas-oil. For our roads and driving style, it is often recommended to choose gas-oil struts, as they are less sensitive to overheating and provide stiffer but more predictable suspension performance. Oil analogues are cheaper, but can become airy during aggressive driving.
- 💎 Genuine parts (Nissan) are the best choice to maintain factory specifications.
- 🛠️ KYB (Kayaba) brands are a popular choice, often supplied as the original to the assembly line.
- 🔧 Monroe, SACHS, Boge - reliable European alternatives with a long service life.
- ⚠️ Avoid cheap analogues of unknown origin, they often last no more than 10-15 thousand km.
Don't forget to also purchase a new set of rubber-to-metal elements. When installing new shock absorbers, old supports and bumpers may collapse, which will negate all the work done. Never install new shock absorbers on worn mounts or without replacing the boots..
Tools and workplace preparation
To carry out high-quality repairs, you will need a standard set of tools, but some specific devices will greatly simplify the task. Particular attention should be paid to the keys for unscrewing the shock absorber rod, as they often have a non-standard shape. If you don’t have a special holder, you can make it yourself or use pliers, but you need to act extremely carefully.
Prepare a jack and reliable safety supports (goats). Working under a vehicle without secure support is strictly prohibited. You will also need a wheel wrench, 12, 14, 17 and 19 mm sockets, as well as open-end wrenches of the appropriate sizes. Don't forget to use WD-40 or a similar penetrating lubricant to treat soured bolts.
☑️ Necessary tools and materials
- 🛠️ 19mm socket for lower mounting.
- 🔑 12 mm socket and 12 mm wrench for top mounting of the rod.
- 🔨 Hammer and pry bar for wedging levers.
- 🧴 Penetrating lubricant for processing threaded connections.
Step-by-step instructions for replacing shock absorbers
The replacement process begins by lifting the car and removing the rear wheel. Inspect the place where the shock absorber is attached to the beam and to the body. If the bolts are stuck, generously coat them with penetrating lubricant and let sit for a few minutes. Remove the lower shock absorber bolt using a 19mm socket.
Next, move on to the top mount in the trunk. Remove the plastic plug and unscrew the stem nut. It is important to secure the rod from turning, otherwise you may damage the threads or the shock absorber itself. If the rod turns, use a special hex wrench or soft-nose pliers.
Difficulty in unscrewing the rod
If the stem does not give way, do not try to rip it off with brute force. It is better to use a special holder or carefully clamp the rod in a vice through a soft gasket. Sometimes lightly tapping the nut with a wrench to break up the corrosion helps.
After removing the fasteners, carefully remove the old shock absorber. If it is stuck, you can gently tap the joint with a hammer, but avoid hitting the body itself. Install a new shock absorber, having previously lubricated the threaded connections.
- Every 30-40 thousand km
- Every 50-60 thousand km
- Only when knocking occurs
- Until it bursts
Nuances of installation and tightening of fasteners
Installing new shock absorbers requires following a specific bolt tightening sequence. The lower mount is only tightened after the suspension is lowered to the ground and the wheels are under load. This is necessary to ensure that the rubber bushings do not twist during suspension operation, which would lead to their rapid destruction.
The top stem mount is tightened to a specific torque, which is usually specified in the manufacturer's specifications. If you don't have a torque wrench, try to tighten the bolt securely, but not too much, so as not to strip the threads on the rod. Make sure the boot and bumper are installed correctly and are not twisted.
Before final tightening of the lower bolt, ensure that the shock absorber is free from distortion and moves freely through the suspension's range of motion.
- ⚙️ Tighten the bottom bolt only under load (when the car is on wheels).
- 🔩 Use a torque wrench to ensure precise tightening torque.
- 🛡️ Check the correct installation of the boot and bump stop before assembly.
After replacement: check and wheel alignment
After completion of the work, it is necessary to check the quality of the installation. Spin the wheels to make sure there is no friction on the suspension parts. Drive your car on a rough road and listen to any extraneous sounds. If the knocking has disappeared, and the suspension works softly and elastically, then the job has been done correctly.
However, replacing shock absorbers often entails changing the suspension geometry, so it is recommended to visit the stand wheel alignment. This is especially important if you notice uneven wear on your tires prior to repair. Adjusting the wheel alignment will extend the life of new tires and improve vehicle handling.
Replacing shock absorbers should be accompanied by checking the wheel alignment to avoid rapid tire wear and deterioration in handling.
Common repair mistakes
Many car owners make mistakes that can lead to repeated suspension failure in the shortest possible time. One of the most common problems is trying to use old bolts that have stretched threads or signs of corrosion. This can lead to the fastener simply unscrewing while driving.
Another common mistake is not replacing bearings and bushings. Installing new shock absorbers on worn bearings creates unnecessary stress on the rod and body, reducing their service life. It is also unacceptable to use a hammer to knock out old bushings without special pullers, as this may damage the seat.
⚠️ Attention: Never use welding or heat to unscrew soured bolts near shock absorbers, as this can destroy the metal structure and lead to component failure.
⚠️ Attention: It is prohibited to operate a car with new shock absorbers without first “grinding them in” - do several smooth braking and acceleration to expel air from the system (if these are gas shock absorbers).
FAQ: Frequently asked questions
How long does it take to replace rear shock absorbers?
With experience and the right tools, replacing one rear shock absorber takes about 30-40 minutes. Two wheels will take approximately 1-1.5 hours, including time for preparation and processing of soured bolts.
Do shock absorbers need to be replaced in pairs?
Yes, it is highly recommended to replace shock absorbers in pairs, even if one of them looks good. Different stiffness of shock absorbers on the left and right sides will lead to instability of the car and accelerated wear of other suspension parts.
Is it possible to drive with a faulty shock absorber?
Driving is technically possible, but it is extremely dangerous. The braking distance increases, cornering stability deteriorates, and during an emergency maneuver the car may lose control. In addition, a faulty shock absorber destroys the body and other suspension elements.
What is the torque for the top rod mount?
For Nissan Almera Classic The recommended tightening torque for the shock absorber rod nut is usually 35-45 Nm. It is better to check the exact value in the service book, as it may depend on the type of shock absorber installed.
What to do if the bottom mounting bolt does not come off?
Use a penetrating lubricant and give it time to work. Try heating the bolt with a hair dryer or blowtorch (carefully!). As a last resort, you can use an impact screwdriver or cut off the bolt with a grinder, but this will require drilling out the remaining parts.
| Shock absorber type | Benefits | Disadvantages | Recommendation for Almera Classic |
|---|---|---|---|
| Oily | Low price, soft work | Overheat quickly, poor response | Only for a quiet ride around the city |
| Gas | Excellent handling, rigidity | High price, harsh on bad roads | For lovers of active driving |
| Gas-oil | Balance of comfort and handling | Average price | The best choice for our roads |
| Original (Nissan) | Perfect compatibility | High cost | To save factory settings |