Crossover rear suspension Nissan Terrano experiences enormous loads when operating off-road and in bad road conditions. The service life of shock absorbers in our climate is often lower than that declared by the manufacturer, which leads to deterioration in handling and the appearance of extraneous knocks. Timely replacement of worn parts is not just a matter of comfort, but also a critical safety measure for all passengers.
The process of replacing the rear struts with Nissan Terrano requires specific tools and knowledge of the nuances of the rear beam design. Many owners try to save money by doing the work themselves, but without following the technology, threaded connections can be damaged or the wheel alignment angle may be set incorrectly. In this article we will analyze in detail all stages of work, from diagnosis to final inspection.
Diagnosis of wear and selection of suitable spare parts
Before you go to the store for new parts, you need to make sure that the problem is really in the shock absorbers. Typical signs of wear include severe body roll when cornering, impacts when driving over uneven surfaces, and the appearance of oil smudges on the strut body. However, a visual inspection is not always indicative, since the internal part of the valve group may fail without external signs.
For an accurate diagnosis, use the “swinging” method. Press down on the corner of the car from the rear and release quickly. If the body makes more than two oscillations before stopping, the strut needs to be replaced. It is also worth paying attention to the condition of the anthers and bump stops. If the rubber is torn or hardened, this will accelerate the wear of the new shock absorbers, so they are replaced as a set.
When choosing new parts, owners Nissan Terrano often face a dilemma: original or high-quality analogue. Genuine Nissan shock absorbers provide the factory balance between comfort and stiffness, but their life may be short. An alternative is proven brands that specialize in SUV suspension.
- 💡 KYB (Kayaba) - popular analogues of the Excel-G series, which often exceed the original in terms of service life and hold the road better.
- 🛡️ Sachs — German quality with an emphasis on comfort and smoothness, ideal for urban use.
- ⚙️ Monroe - excellent value for money, often used as OEM spare parts on the assembly line.
It is important to consider the type of suspension you have. If you have installed lift kit or the ground clearance has been changed, the standard shock absorbers may not be suitable for the stroke length. In such cases, extended versions or specialized racks for off-road use are required.
⚠️ Attention: Never install shock absorbers on different sides of the car. Even the slightest difference in damping characteristics can cause the car to behave erratically at high speed.
- Original Nissan
- KYB (Kayaba)
- Sachs
- Monroe
- Other
Necessary tools and workplace preparation
High-quality replacement of rear shock absorbers is impossible without the right set of tools. A standard set of keys will not work here, since the fastening bolts often stick to the body due to dirt and corrosion. You will need a powerful wrench and extensions to access the arches.
Pay special attention to the spring compression device. If you plan to change not only the shock absorber, but also the spring, bump stop or support bearing, you cannot do without a special tightening tool. Working with the spring without locking it in place is extremely dangerous and can result in serious injury.
Prepare a jack and reliable stands (goats). Never Do not work under a machine that is supported only by a hydraulic jack. Make sure the vehicle is parked on a level and firm surface. It may be necessary to remove the trunk trim to gain easier access to the upper rack mountings.
- 🔧 Set of socket heads from 10 to 22 mm with extensions.
- 🔨 Hammer and pry bar for working with soured bolts.
- ⛽ WD-40 or similar penetrating thread lubricant.
If you do not have experience working with suspension, it is strongly recommended that you watch the video instructions for removing your model in advance. Nissan Terrano. The design of the rear beam has its own characteristics, which are not always obvious in the diagrams.
☑️ Preparation for replacing shock absorbers
Step-by-step instructions for dismantling the old rack
The process begins with lifting the car. Loosen the wheel bolts with the car parked, then jack up the rear and install stands. Remove the wheel and clean the area around the shock absorber from dirt. This is important so that sand does not get inside the mechanism during assembly.
First, unscrew the lower shock absorber mounting bolt. It is usually located on the rear beam king pin and is sized M14 or M16. If the bolt does not budge, use the wheelbrace as leverage and generously coat the joint with lubricant. Give it time to penetrate the thread.
Next, move on to the upper mount in the arch. To do this, you often need to open the trunk and unscrew the plastic plugs or remove part of the trim. The top rod has a specific shape and requires a special key to hold it, otherwise you can damage the spline face. While holding the rod, unscrew the fastening nut.
Carefully remove the shock absorber from the beam eye. Be careful: the spring is under load and can pop out if you are not careful. Be careful not to damage the body paint when removing the part.
The next step is to remove the spring. If you are replacing only the shock absorber, the spring can be left in place, but it is recommended to check it for cracks or sag. If the spring is worn out, it must be compressed with ties and removed together with the lower rubber cup.
- 🔩 Loosen the bottom bolt securing the rack to the beam.
- 🔧 Unscrew the top nut of the rod, holding the rod with a wrench.
- 🚗 Remove the strut from the eye and remove the spring if necessary.
Common problem with bolts
If the bottom bolt is stuck tightly, do not try to remove it with a long lever, so as not to break the threads in the beam. It is better to use heat (burner) and hammer blows, or press it out through a special mandrel.
Installation of new shock absorbers and assembly nuances
Before installing new shock absorbers, be sure to remove the packaging and check the contents. New rubber bushings, washers and nuts often come with the strut. Old bushings can be deformed, and their use will lead to rapid failure of the new part.
Install new rubber cushions and bump stops on the shock absorber rod. It is important to correctly orient the rubber elements: they must fit snugly to the metal parts without distortion. Incorrect installation will lead to knocking and destruction of the rubber in the very first kilometers.
Insert the shock absorber into the beam eye and tighten the lower bolt. Then lift the rod into the upper hole of the body and attach the upper nut. Do not tighten the bolts all the way right away, as you will need to suspend the car to tighten them to the correct torque.
If you also replaced the springs, make sure they are seated correctly. The rubber gaskets between the spring and the body/beam must be intact and not move. This is critical to preventing corrosion of the metal from contact with the rubber.
Before final tightening the bolts, make sure that the shock absorber is strictly vertical and that the spring does not have any play at the bottom of the cup.
Tightening torques and final check
A critical step is tightening the fasteners. Shock absorber bolts have specific tightening torques, which depend on the material of the part and the condition of the threads. For Nissan Terrano the bottom bolt is usually torque-tightened 100-120 Nm, and the upper rod nut is 40-60 Nm (with rod retention).
It is important to tighten the bottom bolt while the car is on wheels (or on stands that simulate suspension load). If you tighten it in a suspended state, when lowering the machine to the ground, the rubber bushings will twist, which will lead to their rapid rupture and the appearance of knocking noises.
After tightening all bolts, perform a check inspection. Make sure there are no gaps between the rubber elements and the metal, and that the nuts are securely fastened. If self-locking nuts were used, do not attempt to reuse them the next time you replace them.
⚠️ Attention: Incorrect tightening torque of the upper rod can lead to its breakage during operation. Always use a torque wrench and keep the rod from turning.
It is necessary to tighten the lower shock absorber bolts only under load, when the car's wheels are lowered to the ground or on stands that simulate the weight of the car.
Comparative analysis of popular shock absorber models
The choice between different brands depends on your driving preferences and operating conditions. The original often loses resources to high-quality analogues, but provides predictable behavior. Let's look at the comparative characteristics of the most popular options for Nissan Terrano.
| Brand | Damping type | Resource (km) | Comfort | Price |
|---|---|---|---|---|
| Nissan (Original) | Comfort | 40 000 - 60 000 | High | Average |
| KYB Excel-G | Sport-comfort | 60 000 - 80 000 | Medium | Low |
| Sachs Super Touring | Comfort | 50 000 - 70 000 | High | Average |
| Monroe Original | Universal | 50 000 - 70 000 | Medium | Low |
As can be seen from the table, KYB Offers a firmer setting that's better on dirt roads but can feel harsh on pavement. Sachs, on the contrary, maintains a soft ride, but on severe off-road conditions it can break through more often than its competitors.
Particular attention should be paid gas-filled shock absorbers, if you often drive on the highway. They provide better stability at high speeds and generate less heat during intense use. However, for quiet city driving, oil struts may seem softer and more pleasant.
Common replacement errors and their consequences
Even experienced craftsmen sometimes make mistakes that can be costly. One of the most common problems is ignoring the replacement of boots and bump stops. If you leave old, cracked elements, dirt and moisture will quickly get into the rod, which will lead to the deterioration of the seal and leakage of the new shock absorber.
Another mistake is using old mounting bolts. The thread may be damaged and the metal may be deformed due to stress. Re-installing such bolts creates the risk of them breaking during tightening or breaking during operation, which can lead to the suspension falling.
Incorrect spring installation is also a common problem. If the spring is shifted relative to the seat, this creates an uneven load on the body and suspension, which leads to accelerated wear of the hinges and silent blocks. Always check the alignment of the threads with the rubber gaskets.
- ❌ Do not replace only one shock absorber (replace with a pair).
- ❌ Do not use old bolts and nuts without checking their condition.
- ❌ Do not tighten the lower bolt when the machine is raised.
Ignoring these rules can lead to the fact that the new suspension will require repair after just a few thousand kilometers. Saving on small things in this case results in double costs for spare parts and labor.
⚠️ Attention: After replacing shock absorbers, be sure to check the wheel alignment angles (wheel alignment) if elements affecting the suspension geometry were removed.
FAQ: Frequently asked questions
Do shock absorbers need to be replaced in pairs?
Yes, it is highly recommended to replace the rear shocks in pairs. Wear usually occurs evenly on both sides, and installing a new strut on only one side will result in a difference in damping characteristics. This will impair handling and may cause the vehicle to skid when braking or turning sharply.
Is it possible to drive with one damaged shock absorber?
You can get to the service station for a short time, but operating a car with one faulty shock absorber is dangerous. This creates an uneven load on other suspension components, increases braking distance and can lead to loss of control of the vehicle in an emergency.
Do I need to do a wheel alignment after replacement?
Replacing rear shock absorbers with Nissan Terrano usually does not require wheel alignment adjustments, since the design of the rear beam does not allow for angle adjustment during a standard replacement. However, if you have removed arms or a beam, or if you have noticed uneven wear on your tires, it may be a good idea to check the angles.
How often should rear shock absorbers be replaced?
The service life of rear shock absorbers depends on operating conditions, but on average they require replacement every 60,000 - 80,000 km. On bad roads this period can be reduced to 40,000 km. Regular diagnostics during maintenance will help identify the problem in time.