Operation of the sedan Nissan Almera generation N16 in conditions of Russian roads inevitably leads to wear of suspension elements. Rear shock absorbers, a critical component for comfort and handling, often fail ahead of schedule. Ignoring signs of malfunction can lead to accelerated tire wear and loss of vehicle stability when braking.
The process of replacing shock absorbers on this model has its own technical features that must be taken into account when performing independent repairs. Correct diagnosis and compliance with the sequence of actions help to avoid damage to the body and adjacent components. In this article we will analyze all the nuances, from the selection of spare parts to the final tightening of fasteners.
Diagnosis of faults and selection of spare parts
Determine what rear shock absorbers require replacement, both visually and by the behavior of the car on the road. The most obvious sign is the appearance of extraneous knocks when driving over bumps, which can be heard even with the windows closed. It is also worth paying attention to the nature of the body's rolling after passing speed bumps.
If, after pressing the rear bumper, the car makes more than two oscillations before stopping, this is a sure sign of loss of damping properties. Visual inspection may also reveal traces oil leaks on the shock absorber body or mechanical damage to the spring. Rubber-metal joints (silent blocks) often collapse before the racks themselves, creating additional backlash.
When choosing new parts, it is worth considering that factory shock absorbers are often replaced with reinforced analogues or products from brands specializing in suspension. Kayaba, SACHS or Monroe - popular options for Nissan Almera N16. It is equally important to check the completeness: often the kit does not include new support bearings or anthers, which are recommended to be replaced along with the struts.
⚠️ Attention: If you notice oil leaks, do not delay repairs for a long time. Oil leaking from the shock absorber can corrode rubber suspension parts and stain the springs, making them difficult to visually inspect in the future.
- 🔍 Conduct a rocking test: press on the corner of the trunk and release sharply - the car should return to its original position without unnecessary hesitation.
- 🔍 Inspect the bottom of the shock absorber for corrosion, which may make it difficult to unscrew the lower mount.
- 🔍 Check the condition of the springs: cracks or chips on the coils of the spring are a critical defect.
Preparation of tools and workplace
To perform the work, you will need a standard set of tools, but having specific equipment will greatly simplify the task. The main tool will be jack and reliable coasters for car insurance, since working under the car without them is strictly prohibited. You will also need a socket set, wrenches, and a torque wrench for proper tightening.
Pay special attention to the spring remover or spring compressor. Without this tool, it is impossible to safely disassemble the rack, since the spring is under enormous tension. Attempting to remove the top nut without compressing the spring may cause injury or damage to parts. To treat soured bolts, a penetrating lubricant like WD-40 is required.
If you don't have experience working with suspension springs, consider using a specialized bench at your auto repair shop just to compress the springs and do the rest of the work yourself. This will save time and money while maintaining safety. Also prepare a waste container and rags, as some oil may leak out during dismantling.
☑️ Preparation for replacing shock absorbers
Removing rear shock absorbers
Start by lifting the rear of the car and removing the wheels. Be sure to place the machine on supports under the threshold or a reinforced frame member to eliminate the risk of falling. After removing the wheel, open the trunk and remove the plastic arch trim to gain access to upper fastening nuts shock absorber
The upper part of the shock absorber is attached to the body through three bolts that hold the support cup. To unscrew them, it is often necessary to hold the rod from turning with a special key or hexagon. If the rod rotates together with the nut, use a special tool or clamp the rod in a vice (if the shock absorber has already been removed). Upper support fastener may become very sour due to dirt and moisture.
From below, the shock absorber is attached to the beam through a bolt. Before unscrewing the bottom nut, it is necessary to secure the beam with a jack so that it does not collapse under its own weight. This is important to avoid damaging the brake hose or handbrake cable. Unscrew the bottom bolt and carefully remove the rack from the arch. Removing the spring must be done with extreme caution.
Features of unscrewing the bottom bolt
If the bolt does not budge, use a long wrench to increase leverage. Heating the nut with a torch helps in some cases, but be careful around brake hoses and fuel lines. Never use impact tools without securing the bolt to avoid stripping the threads in the beam.
If you plan to replace just the shock absorber and not the entire strut assembly, you will have to use a spring puller. Fix the spring in a vice or on a stand, compressing it until the load is removed from the upper glass. Only after this can you unscrew the central nut of the rod and dismantle the old part. Assembling a new rack done in reverse order.
- 🛠️ Use two jacks: one to lift the body, the second to support the beam.
- 🛠️ Treat all threaded connections with penetrating lubricant 15-20 minutes before starting work.
- 🛠️ Mark the position of the spring relative to the body with a marker so as not to confuse the sides during installation.
Installation of new shock absorbers and springs
Installation of a new part begins with preparing the kit. Check that all necessary gaskets, boots and bump stops are present. If you are only replacing the shock absorber, make sure that upper support and the bearing is in good condition. A worn bearing will cause knocking even on new shock absorbers, ruining all the work.
Insert the new shock absorber into the beam eye and tighten the bottom bolt, but do not tighten it all the way. Raise the beam with a jack until it reaches its normal position relative to the body. This is a critical point: The bottom bolt should only be tightened under load.when the wheel is on the ground or the beam is raised. Otherwise, the rubber bushing will constantly twist and quickly collapse.
Install the upper part of the rack onto the body and tighten the fastening bolts. Again, make sure that the shock absorber rod is secured against turning. After assembling the entire assembly, lower the car to the ground. Now you can finally tighten the bottom bolt and check all connections for any play. Control tightening all suspension elements are required.
Before installing a new spring, apply a thin layer of graphite lubricant to its coils. This will prevent the spring from squeaking against the body cups when driving and will make it easier to remove the spring in the future.
Technical nuances and common errors
Many car owners make the mistake of trying to replace shock absorbers on only one side. This leads to uneven operation of the suspension and can cause the car to skid when cornering. Replacement by pair - the golden rule of chassis repair. Even if the second shock absorber is still working, its resource is already close to exhaustion.
Another common problem is improperly tightened bolts. Too much tightening can lead to thread stripping or destruction of rubber bushings, while too little tightening can lead to knocking noises. Use a torque wrench and refer to the torque chart. Tightening torques may differ for different nodes, so do not rely on intuition.
Sometimes during dismantling it becomes difficult to unscrew the bottom bolt due to corrosion. In such cases, you should not use excessive force to avoid breaking the bolt in the beam eye. It's better to use a penetrating lubricant and give it time to work, or apply heat. If the bolt does break, you will need to drill out the remainder or replace the eye, which will significantly complicate the repair.
| element | Recommended tightening torque (Nm) | Note |
|---|---|---|
| Upper rod nut | 45-50 | Keep the rod from turning |
| Beam mounting bolt | 100-110 | Tighten under load |
| Upper support nuts | 25-30 | Three body mounting bolts |
| Spring fastening | — | Does not require tightening, fixation is checked |
It is necessary to tighten the lower bolt securing the shock absorber to the beam only when the suspension is in the working position under load. This will extend the life of the rubber bushings and ensure proper suspension operation.
Operational check and final assembly
After installing new shock absorbers, it is necessary to check the operation of all components. Spin the wheel by hand to make sure the brakes do not interfere with the new parts. Check to see if the spring is touching any body or arch elements. Free movement The wheels should be full, without any obstructions.
Take a test drive at low speed, paying attention to any strange sounds. If the knocking noises have disappeared and the car has become more stable, it means the job was done correctly. If new noises appear, return to checking the bolts for tightness and spring installation. Suspension diagnostics may be required if the problem persists.
Don't forget to reinstall the plastic trim on the arches and trunk. They not only protect the suspension from dirt, but also provide acoustic comfort in the cabin. Final check includes an inspection of all fastenings a few days after the trip, since rubber products may “sag” a little and require tightening.
- Kayaba (KYB)
- SACHS
- Monroe
- Original Nissan
Wheel alignment and subsequent maintenance
After replacing shock absorbers and springs, the suspension geometry may change slightly. Although on the rear beam Nissan Almera Wheel alignment angles are often not adjustable; it is recommended to check them at a wheel alignment stand. This is especially important if you changed not only shock absorbers, but also steering elements or levers.
Correctly adjusted wheel alignment angles will ensure uniform tire wear and stable vehicle behavior on the road. If you notice that the car is pulling to the side or the steering wheel is uneven, this is a reason to visit the service center. Camber adjustment may require the installation of special eccentric bolts if standard adjustment is not possible.
To extend the life of your new shock absorbers, avoid extreme driving and driving through deep potholes at high speed. Inspect the suspension regularly for signs of oil or damage. Timely service will allow you to enjoy comfort and safety for many years of using your car.
⚠️ Attention: Replacing shock absorbers without checking the wheel alignment can lead to accelerated tire wear. Even if the angles are not adjustable, checking them can reveal hidden problems with the beam or arms.
- 🚗 Take a ride on the wheel alignment stand immediately after replacing the suspension.
- 🚗 Check the tire pressure and adjust it according to the manufacturer's recommendations.
- 🚗 After 1000 km, check the tightness of all suspension bolts again.
FAQ: Frequently asked questions
Is it possible to change shock absorbers one at a time?
Although technically possible, it is strongly not recommended to replace shock absorbers one at a time. The difference in the characteristics of the old and new parts will lead to uneven operation of the suspension, deterioration in handling and accelerated wear of other elements. It's better to replace them in pairs.
Do the springs and shock absorbers need to be replaced?
If the springs have no visible damage, cracks or subsidence, they can be left. However, if the spring has lost its elasticity or is corroded, replacing it along with the shock absorber is a reasonable solution, since access to it is difficult and requires repeated disassembly.
How long do rear shock absorbers last on a Nissan Almera N16?
The service life depends on operating conditions and the quality of spare parts. On average, they last from 60 to 100 thousand kilometers. However, on bad roads the resource can be reduced to 40-50 thousand kilometers. Regular diagnostics will help detect wear at an early stage.
What to do if the shock absorber mounting bolt does not come off?
Use a penetrating lubricant and give it time to work. Try heating the nut with a hair dryer or torch. If the bolt still won't budge, you can use a special puller or impact tool with caution. In extreme cases, you will need to drill out the bolt.
Is it necessary to do a wheel alignment after replacing shock absorbers?
On the rear beam Nissan Almera N16 Wheel alignment angles are often not adjustable, but checking the wheel alignment at a wheel alignment stand is mandatory. This will ensure that the geometry is not compromised and avoid uneven tire wear.
Replacing rear shock absorbers with Nissan Almera N16 - a task that can be done with your own hands if you have basic skills and tools. The main thing is to follow safety precautions, use high-quality spare parts and not neglect the recommendations for tightening fasteners. Properly performed work will return the car to its former smooth ride and confidence on the road.