Crossover rear suspension Nissan Qashqai the first generation (J10) is one of the most reliable in its class, but the life of the rubber-metal joints is limited. Over time, silent blocks lose their elasticity, which leads to knocking noises, the car pulling to the side and uneven tire wear. Ignoring this problem can cause deformation of the arms or failure of the shock absorbers.
The process of replacing these elements requires not only a set of tools, but also an understanding of the design features of the rear beam. Many car owners try to save money by changing only the rubber bushing, however pressing technology in garage conditions often leads to rapid re-wear. In this article we will look at how to correctly diagnose a fault and replace the unit with minimal loss of time and money.
Rear suspension wear symptoms and diagnostics
Understand that rear silent blocks the time has come to change, based on a number of characteristic signs that appear when driving over uneven surfaces. The very first signal is a dull metallic knock that occurs when driving over speed bumps or potholes. This sound is often confused with a malfunction of the shock absorbers, but the reason lies precisely in the play of the rubber-metal joint.
The second important symptom is a wheel alignment disorder. If you notice that the steering wheel is crooked or the car constantly pulls to the side, even after a recent adjustment, the problem may be a loose lever. The rubber bushing no longer holds the lever in a fixed position, which changes the suspension geometry. It is also worth paying attention to the appearance of the tires: uneven tread wear at the edges is a sure sign of problems with the suspension.
Sometimes the malfunction appears only during a sharp start or braking. At such moments, the body may roll more than usual, and clicks can be heard from behind. For an accurate diagnosis, you need to drive the car onto a lift and swing the lever with a pry bar. If there is significant play or cracks in the rubber, replacing silent blocks inevitable.
Selection of spare parts: original or analogues
Spare parts market for Nissan Qashqai J10 offers many options, from original dealer parts to budget analogues. The original silent block number usually starts with the prefix 54500, but the price for such products is often overpriced. Aftermarket manufacturers offer solutions that are not inferior in rubber quality to the original, and sometimes even surpass it due to the use of compounds that are more resistant to oil and temperature.
When choosing analogues, you should give preference to proven brands specializing in suspension. Company products LemfΓΆrder, TRW or Febi has proven itself to be a reliable alternative. Cheap Chinese kits often have hard rubber, which quickly cracks, or violate the press-fit geometry, causing the lever to deform during operation.
Many craftsmen recommend changing the silent blocks complete with the lever if the latterβs resource is exhausted. However, if the lever itself has no signs of corrosion or mechanical damage, you can only buy bushings. This allows significant savings, but requires a powerful press and special mandrels for high-quality installation.
Necessary tools and preparation
To perform the work, you will need a standard set of automotive tools, but with an emphasis on power elements. Keys and sockets of sizes 17, 19, 21 and 24 mm must be of high quality, since the bolts for securing the arms often stick to the body. Penetrating lubricant type WD-40 or similar must be on hand to treat threaded connections before starting work.
The most important replacement tool is jack or a lever stand to relieve the load on the suspension. You will also need a powerful hydraulic press or a set of mandrels to press out old bushings and press in new bushings. Without a press, it is extremely difficult to do the job efficiently, since the silent blocks fit very tightly.
Don't forget to prepare new bolts securing the arm to the body. They are often disposable and have a special coating that is damaged when twisted. Reusing old bolts may result in them breaking when tightened or loosening during use.
- Once every 2 years
- Once every 4 years
- Once every 6 years
- I only replace it when it breaks.
Step-by-step instructions for replacing silent blocks
Before starting work, the car must be securely secured on a lift or a pair of reliable stands. The wheels must be removed to gain full access to the rear beam. Unscrew the bolts securing the arms to the body, but do not remove them completely at once - this will help keep the arm in place. First, loosen the bolt securing the shock absorber to the steering knuckle.
Next, you need to remove the lever from the car. To do this, completely unscrew the bolts securing it to the body and remove the lever. If the bolts are stuck, use a heat gun or gas torch (be careful with paint and rubber). After removing the lever, you need to clamp it in a vice and use a press to press out the old silent block. Try to press strictly along the axis so as not to damage the aluminum housing of the lever.
Clean the seat of rust and old grease using a wire brush and solvent. The new silent block must be lubricated with soapy water or silicone grease to facilitate pressing. Install it into the lever using a press, making sure it goes all the way in and is in the correct position. The silent block axis must be oriented strictly according to the manufacturer's marks.
βοΈ Preparation for replacement
Nuances of installation and tightening of bolts
Installing the lever on a car requires special attention to the tightening torque of the bolts. Tightening under load must be performed. This means that the car should be on its wheels, and the lever should be in a natural position, simulating movement on the road. If you tighten the bolts on a suspended car, the rubber of the silent block will be twisted, which will lead to its rapid destruction.
Use a torque wrench to check the tightening torque. For bolts securing the lever to the body, the torque is usually about 110-130 Nm, but it is better to check the exact values ββin the service documentation for your specific modification. Do not attempt to tighten the bolt by eye or with an extension cord - this may result in stripped threads or insufficient tightening.
After assembling the suspension, be sure to perform the wheel alignment on the stand. Even the slightest shift of the lever can change the wheel alignment angles. Adjusting the rear suspension to Qashqai J10 often limited to checking, since the angles are not adjustable, but if the replacement was carried out incorrectly, the eccentric bolts will need to be replaced (if such are provided for in the design) or adjusted on a bench.
Use a soap solution to lubricate the silent block when pressing - it is safer for rubber than machine oil, which can cause swelling.
β οΈ Attention: Do not use kerosene-based lubricants or aggressive solvents to clean the seats, as this may damage the rubber part of the new silent block before installation.
What to do if the bolt does not come off?
If the bolt is stuck, try heating its threaded part. Sometimes the βsnap-onβ bolt method helps: screw the nut onto the bolt and try to unscrew both parts together.
Cost of work and budget savings
The cost of replacing rear silent blocks at a service center consists of the cost of spare parts and labor. The work itself of replacing one lever with two silent blocks usually takes 1-1.5 hours. If you decide to change only the bushings, the cost of the work may be lower, but the risk of damaging the lever when pressing out increases.
Replacing the entire lever assembly (if it is dismountable and the silent blocks are replaced separately) will cost less than buying a new lever assembly, but more expensive than buying only rubber bushings. On average, the cost of one original lever is a significant amount, while a set of high-quality analog bushings costs several times less.
Self-replacement allows you to save on labor costs for craftsmen, but requires the availability of equipment. If you don't have a press, you'll have to rent one or pay for a pressing service at a workshop, which will reduce some of the savings to zero. However, if you have the tools and skills, you can spend half as much on repairs as at a service station.
Replacing silent blocks without removing the lever from the car is highly not recommended, since access to the bushing is difficult, and the risk of damaging the body or the lever itself when pressed out is very high.
Comparison table of spare parts characteristics
For clarity, here is a comparison of popular spare parts options available on the market. This will help you make an informed choice between the original and analogues, taking into account the balance of price and quality.
| Manufacturer | Product type | Average price (RUB) | Resource (km) |
|---|---|---|---|
| Nissan (Original) | Lever assembly | 12 000 - 15 000 | 100 000+ |
| LemfΓΆrder | Silent block (pair) | 4 500 - 6 000 | 80 000 - 100 000 |
| Febi Bilstein | Silent block (pair) | 3 500 - 5 000 | 60 000 - 80 000 |
| Silent block (Budget) | Rubber bushing | 1 500 - 2 500 | 30 000 - 50 000 |
| Trading house | Lever (analog) | 7 000 - 9 000 | 70 000 - 90 000 |
β οΈ Attention: Tightening the bolts securing the arms to the body must be done only when the car is standing on wheels under load, otherwise the silent block will quickly collapse due to twisting of the rubber.
Frequently asked questions (FAQ)
Is it possible to replace silent blocks without removing the lever from the car?
Theoretically, this is possible if you have a special set of mandrels and a powerful hydraulic jack, but in practice it is extremely inconvenient. There is little space, and the risk of damage to the body or adjacent elements is very high. It's better to remove the entire lever.
How often do you need to change the rear silent blocks on a Qashqai J10?
Original elements usually last about 80-100 thousand kilometers. Analogue parts may require replacement earlier or later depending on the quality of the rubber and operating conditions (roads, climate).
Is it necessary to do a wheel alignment after replacement?
Yes, this is a mandatory procedure. Any intervention in the suspension changes the wheel alignment angles. Without adjustment, you risk ruining your new tires in a short time.
What to do if the bolt breaks during replacement?
This is an unpleasant situation, but it can be solved. You will need to drill out the remaining bolt or use an extractor. In some cases, it is necessary to remove part of the lever to access the broken part. It is better to use new bolts every time you replace them.
Can lubricant be used for pressing?
Yes, but only soap solution or silicone grease. Using motor oil or grease can cause the rubber to swell and break down in the future.