Let's start with the fact that the suspension Nissan Qashqai The first and second generations are subject to serious loads due to the characteristics of the road surface and chassis design. Over time, rubber-to-metal joints, known as silent blocks, lose their elastic properties, which leads to knocking and deterioration of controllability.
Ignoring signs of wear can lead to more serious damage, including a broken arm or loss of control at high speed. Timely replacement of silent blocks allows you to extend the life of the entire suspension by 40-50%, without resorting to a complete replacement of the lever assembly, which significantly saves the owner’s budget.
Signs of wear and diagnostics of suspension
The first warning signal is usually a characteristic knock in the front of the car, which is clearly audible when driving over bumps, speed bumps or potholes. This sound occurs because rubber product the inside of the joint has cracked or completely collapsed, leaving the metal bushing without damping.
In addition to acoustic signals, the driver may notice a deterioration in the car’s behavior on the road. Steering wheel begins to vibrate at high speeds, and the car can “scour” along the trajectory, requiring constant steering. Uneven wear is also common. tires, especially on the inside or outside of the tread, which indicates a wheel alignment violation.
For accurate diagnostics, it is necessary to lift the car on a lift or place it on an inspection hole. A visual inspection often reveals rubber breaks, cracks or traces of oil leakage (if we are talking about hydraulic silent blocks, although Qashqai rubber ones are more common). Backlash lever relative to the bracket when swinging the mount also confirms the need for replacement.
⚠️ Attention: Do not confuse the knocking of silent blocks with the knocking of the anti-roll bar or stabilizer bushings. Diagnostics must be comprehensive so as not to change serviceable parts.
Selection of quality spare parts and tools
There is a huge variety of offers on the auto parts market, from cheap analogues to original parts. Nissan. The original, of course, guarantees maximum service life, but its cost may be unreasonably high for a budget repair. Analogues from trusted brands often surpass the original ones in the quality of the rubber compound.
Among the manufacturers recommended for Nissan Qashqai, it is worth highlighting Lemförder, Techspan, Corteco and TRW. These companies use modern compounds that are resistant to temperature changes and aggressive reagents. Cheap Chinese products often have hard rubber, which quickly hardens and cracks after only 10-15 thousand kilometers.
To do the job you will need a specialized tool. Ordinary jacks and wrenches will not cope here, since a lot of force is required to squeeze out the old bushings and press in new ones. Silent block remover or a powerful hydraulic press machine is a prerequisite for quality repairs.
- 🔧 Set of sockets and ratchets (including 17, 19, 21 mm socket)
- 🔨 Hammer with metal and rubber head for accurate knocking out
- 🛢 Special lubricant (soap solution or silicone) to facilitate installation
- 🔩 Liquid wrench (WD-40 or equivalent) for loosening the mounting bolts
- Original (Nissan)
- Original analogues (Lemförder)
- Budget brands (China)
- I don't know what to choose
Step-by-step algorithm for removing the lever
The process begins with preparing the car. Lift the front of the machine, remove the wheels and install securely support posts. Do not rely solely on the hydraulic jack, as it can fall down at any time, which can be life-threatening.
The first step is to loosen the ball joint bolt, but do not unscrew it completely. Then we move on to attaching the lever itself to the subframe. Typically there are two bolts, one of which may be long and go through the bracket. Pour liquid key generously over the threads and wait 10-15 minutes.
After unscrewing the bolts, the lever can be held by the ball joint. Loosen the ball nut, knock out the pin with a special puller or hammer (carefully so as not to damage the thread). Now the lever is completely free and can be dismantled for further work on the workbench.
☑️ Preparation for dismantling the lever
The process of replacing silent blocks
The most difficult part of the job is removing the old bushings and installing new ones. The old silent block often sticks to the metal holder of the lever. Use a puller to gradually push it out, avoiding distortions. If the bushing is destroyed, you can cut it with a grinder, but be extremely careful not to damage the seat in the lever.
Before installing a new part, thoroughly clean the seat from rust and dirt. Surface must be smooth, otherwise the new rubber will quickly deform. Apply a thin layer of lubricant to the outer race of the silent block - this will facilitate pressing and prevent the bushing from rotating during operation.
When pressing a new element, pay attention to its orientation. Some silent blocks have an asymmetrical design or grooves that must be directed in a strictly defined manner. If the sides are mixed up, the lever may not work properly, creating unnecessary stress in the rubber.
What are the dangers of improper pressing?
If the silent block is installed skewed, the rubber will quickly begin to crack under load. This will lead to repeated knocking after a couple of thousand kilometers, and in the worst case, to the breaking out of the lever mounting bolt while driving.
Installation and adjustment of wheel alignment
After replacing all silent blocks, the lever is installed in place in the reverse order. This means that the car must stand on its wheels, and the weight of the car must be distributed on the suspension.
If you tighten the bolts by weight, the rubber-metal hinge will be in a twisted state. When driving over uneven surfaces, the rubber will begin to work at extreme deformations, which will lead to its rapid destruction. Lower the vehicle, make sure the wheels are on the ground, and only then tighten the fasteners to the required torque.
After assembly, be sure to visit the wheel alignment stand. Replacing levers or silent blocks inevitably changes the suspension geometry. Options Wheel alignments must be adjusted, otherwise you will experience rapid tire wear and unstable vehicle behavior.
| element | Recommended Manufacturer | Service life (km) | Difficulty of replacement |
|---|---|---|---|
| Original Nissan | Nissan | 80 000 - 100 000 | Average |
| Premium analogue | Lemförder, TRW | 60 000 - 80 000 | High |
| Budget analogue | Unnamed brands | 15 000 - 30 000 | Low |
| Lever repair kit | Specialized service stations | 40 000 - 50 000 | Low (if there is a press) |
Tightening the lever bolts should only be done when the car is on wheels, otherwise the service life of the new silent blocks will be reduced significantly.
Common repair mistakes
One of the most common mistakes is trying to replace silent blocks without removing the lever from the car. In conditions of cramped engine compartment space and lack of access to the rear side of the lever, it is almost impossible to press in a new part efficiently. The result is often damaged threads or warped metal.
Another problem is using the wrong lubricant. It is strictly forbidden to use grease, lithol or motor oil to install rubber bushings. These substances destroy the rubber structure. Use only special silicone lubricants or soap solution that does not react with the material.
Also, do not tighten the ball joint or arm bolts beyond the tightening torque. Padding may lead to stripping of threads or deformation of the brackets, which will require replacement of the entire lever assembly. Use a torque wrench and refer to the technical data.
If the old bolts securing the lever to the subframe have stripped threads or signs of corrosion, replace them with new original bolts. Reusing old fasteners is unacceptable due to the risk of them breaking under load.
Saving time and money: do it yourself or service?
Replacing silent blocks is a labor-intensive procedure and requires special tools. If you don't have a hydraulic press or puller, you can spend all day trying to press out the bushing the old-fashioned way. In the service, such work is completed in 2-3 hours thanks to the equipment.
On the other hand, the cost of service stations can be 30-50% of the cost of all spare parts. If you're planning on replacing all four bushings (front and rear on each control arm), doing it yourself can save a significant amount of money, especially if you already have the necessary tools.
The decision depends on your technical background and time availability. For beginners, it is better to entrust the work to professionals to avoid mistakes that can cost more than repairs. Experienced craftsmen should evaluate the feasibility of purchasing or renting a press.
How to understand that the silent block requires replacement?
The main signs: knocking when driving over bumps, beating of the steering wheel, uneven tire wear, visual cracks in the rubber or play in the lever when swinging with a mount.
Is it possible to replace only one silent block on the lever?
Technically possible, but not recommended. If one wears out, it means that the others have also reached their service life. It is better to change all the bushings on the lever at the same time for uniform suspension operation.
Do I need to do a wheel alignment after replacement?
Yes, definitely. Any intervention in the suspension geometry, including replacing levers or silent blocks, requires adjustment of the wheel alignment angles.
How long does it take to replace silent blocks?
In garage conditions using hand tools - up to 4-5 hours. At a specialized service station with a press - about 1.5-2 hours.