Subframe silent blocks are one of the most loaded rubber-metal elements in suspension Nissan Murano (body Z50 And Z51). Their wear does not appear immediately, but the problem cannot be ignored: damaged parts lead to backlash, deterioration in handling and even damage to the body. In this article we will look at how to diagnose a malfunction yourself, what spare parts to choose and why is it critical to use a special puller when replacing silent blocks on a Murano - without it, the risk of damaging the subframe increases 3 times.
The replacement procedure requires care and patience, but with the right approach it can be done in a garage. We will describe each stage in detail: from preparing the tools to the final tightening of the bolts to the correct torque. We will pay special attention typical mistakesthat even experienced craftsmen make - for example, incorrect sequence of unscrewing fasteners or ignoring the alignment of the subframe after installing new silent blocks.
Signs of wear on subframe silent blocks on a Nissan Murano
The first symptoms of a problem are often attributed to “fatigue” suspension or faulty shock absorbers. However there is characteristic features, which directly point to the silent blocks of the subframe:
- 🔧 Knocks in the front of the body when driving over uneven surfaces (especially noticeable on small bumps or when starting off). The sound does not come from under the wheels, but as if “from inside” the car.
- 🚗 Pulling the car to the side when driving on a flat road, even after a wheel alignment. This is due to the displacement of the subframe relative to the body.
- 🔄 Steering wheel play (up to 5–10°), which does not disappear after replacing the tips or steering rack. You can check by shaking the steering wheel in place with the engine off.
- 🛑 Uneven tire wear (especially the inner edge of the front wheels), despite normal pressure and balancing.
On Murano with a mileage of more than 100 thousand km, the silent blocks of the subframe wear out in 80% of cases earlier than the rear or front arms. This is due to the design: the subframe takes on the main loads during braking and acceleration. Critical wear can be determined visually: if the rubber insert is crumbled and the metal bushings are loose relative to each other, replacement cannot be avoided.
⚠️ Attention: On Nissan Murano with the system 4WD (all-wheel drive) wear of the subframe silent blocks appears faster due to additional loads from the driveshaft. You need to check their condition at the first appearance of vibrations at a speed of 80–100 km/h.
Which silent blocks to choose: original vs analogues
Original spare parts from Nissan for subframe Murano (articles 54501-4M00A And 54501-4M00B for the left and right sides, respectively) are expensive - from 3,500 to 5,000 rubles per piece. However, their resource rarely exceeds 120 thousand km. Alternative brands offer cheaper and sometimes more durable options.
| Brand | Article | Price (per piece), ₽ | Resource, thousand km | Features |
|---|---|---|---|---|
| Nissan (original) | 54501-4M00A/B |
4 500–5 000 | 100–120 | Soft rubber, precise fit |
| Febi (Germany) | 22616 |
2 200–2 500 | 150+ | Reinforced rubber, requires lubrication during installation |
| Lemforder (Germany) | 31493 01 |
2 800–3 200 | 180+ | Metal bushings with anti-corrosion coating |
| Sasic (South Korea) | 2005-0012/13 |
1 500–1 800 | 90–110 | Budget option, suitable for temporary replacement |
| Polyurethane (polyurethane) | Universal | 3 000–4 000 | 200+ | They are not afraid of oil and temperatures, but transmit vibrations to the interior |
When choosing analogues, pay attention to bushing material: for cheap options (for example, Sasic) metal often rusts after just a year of use. Optimal balance of price and quality - Febi or Lemforder. Polyurethane silent blocks are suitable for a sporty driving style, but can cause discomfort on uneven roads due to their increased rigidity.
- Original (Nissan)
- Premium analogues (Febi, Lemforder)
- Budget analogues (Sasic, TRW)
- Polyurethane
- I don't know
Necessary tools and preparation for work
To replace the subframe silent blocks with Murano will be required specialized tool. Without it, the risk of damaging the subframe or body is up to 70%. Here's the full list:
- 🔧 Silent block remover (For example, KUKKO 210-2 or equivalent). Universal “handicraft” methods (burning, hammering) are unacceptable!
- 🔨 Socket heads at 14, 17 and 19 mm (deep, since the bolts are recessed).
- 🔩 Torque wrench with a range of up to 200 Nm (tightening torques are critical!).
- 🛠️ Clamps or vice for fixing the subframe during pressing.
- 🧴 Penetrating lubricant (WD-40 or Liqui Moly Rostloser) and copper paste for bolts.
- 📏 Ruler or caliper to check the alignment of the subframe after installation.
Before starting work necessarily:
- Raise the car lift or reliable supports (jack is not suitable!).
- Remove crankcase protection and, if necessary, front bumper (on some modifications it interferes with access).
- Clear threaded connections remove dirt with a wire brush and treat with lubricant 1–2 hours before unscrewing.
Raise the car on supports|Remove the crankcase protection and bumper (if necessary)|Treat the bolts with penetrating lubricant|Check for the presence of a puller and a torque wrench|Prepare new silent blocks and copper paste-->
⚠️ Attention: On Nissan Murano with engine VQ35DE (3.5 l) to access the rear subframe bolts must be removed engine mount. Without this, it is impossible to unscrew the fasteners!
Step-by-step instructions for replacing silent blocks
The replacement process is divided into 4 Key Stages. Follow the instructions strictly in order to avoid distortion of the subframe or damage to the body.
1. Removing the subframe
Unscrew all bolts securing the subframe to the body and suspension arms. Important: start with the rear bolts (closer to the interior), as they hold the main load. Use head extensionto reach the top fastenings. After unscrewing, carefully lower the subframe onto wooden blocks - this will prevent its deformation.
2. Pressing out old silent blocks
Place the subframe in a vice and use a puller to squeeze out the old silent blocks. Do not use a hammer! Impacts may damage the seats. If the rubber is stuck, treat it WD-40 and wait 10–15 minutes. Clean the holes from rust and rubber residues.
What to do if the silent block is “stuck” to the subframe?
If a standard puller fails, try heating the metal sleeve with a hair dryer (up to 200°C). This will expand the metal and make pressing out easier. Do not use open fire! The rubber may ignite and the subframe may become deformed.
3. Installation of new silent blocks
Lubricate the seats before pressing soap solution (not oil!). This will make installation easier and prevent squeaks. Press in silent blocks strictly perpendicular subframe plane. After installation, check that metal bushings did not play regarding rubber.
4. Assembly and alignment
Reinstall the subframe, but do not tighten the bolts completely. First, tighten all the fasteners, then lower the car onto the wheels (without removing it from the supports!) and tighten the bolts with a torque wrench with the moment 120–140 Nm for main fastenings and 80–100 Nm for levers. This is necessary for proper alignment of the subframe.
After replacing the silent blocks, check the wheel alignment angles (wheel alignment). Even a slight misalignment of the subframe can cause the car to pull to the side.
Common mistakes and how to avoid them
Even experienced craftsmen make mistakes when replacing silent blocks with Murano. Here TOP-5 misses, which lead to repeated repairs:
- 🔧 Using a hammer to knock out silent blocks → deformation of seats and cracks in the subframe.
- 🔩 Tightening bolts by weight (without lowering the car onto the wheels) → misalignment of the subframe and uneven tire wear.
- 🧴 Lack of lubrication during pressing → squeaks and accelerated wear of new parts.
- 📏 Ignoring alignment → steering wheel shift and vibration at speed.
- 🔧 Saving on puller → damage to rubber bushings during installation.
Another common mistake is wrong choice of silent blocks. For example, installing polyurethane parts without taking into account their rigidity can lead to the transfer of vibrations to the body and discomfort when driving. If you prefer softness, choose the original or Febi with rubber inserts.
The most critical mistake is tightening the subframe bolts with the car suspended. This leads to displacement of the seats and reduces the service life of new silent blocks by 2–3 times.
When to contact the service: difficult cases
Some situations require professional equipment or experience. Contact service, if:
- 🔧 Seats for silent blocks in the subframe deformed or cracked (a welding machine will be required for restoration).
- 🔩 Fastening bolts plucked or soured (requires special extractors or drilling).
- 🚗 Remained after replacement steering wheel play (the silent blocks of the steering rack or levers may be damaged).
- 🔧 Required replacing the subframe assembly (for example, after an accident or severe corrosion).
The cost of replacing subframe silent blocks in the service varies from 8,000 to 15,000 rubles (depending on region and complexity). If you are not confident in your abilities, entrust the work to professionals - mistakes when repairing chassis Nissan Murano can have costly consequences.
FAQ: Frequently asked questions about replacing silent blocks
Is it possible to drive with worn subframe silent blocks?
Short-term (up to 1-2 weeks) - yes, but it’s not worth the risk. Worn silent blocks lead to:
- Subframe play and body damage at fastening points.
- Uneven tire wear (especially the front ones).
- Deterioration in controllability at high speeds.
At the first signs of wear (knocking, slipping), replace parts.
How long does it take to replace?
In garage conditions - 4–6 hours (taking into account preparation and alignment). In service with a lift - 2–3 hours. Pressing out old silent blocks takes the longest (especially if they have become “stuck”).
Is it necessary to do a wheel alignment after replacement?
Definitely! Even with careful alignment of the subframe, the wheel alignment angles change. Adjustment cost - from 1,500 rubles, but it is cheaper than buying new tires due to uneven wear.
Can polyurethane bushings be used on Murano?
Yes, but with reservations:
- ✅ Suitable for aggressive driving style (holds loads better).
- ❌ Transmit vibrations into the cabin (a hum may appear on uneven surfaces).
- ⚠️ Required precise installation — the slightest distortion will lead to squeaks.
For everyday driving, it is better to choose high-quality rubber analogues (Lemforder or Febi).
What happens if you don't lubricate the bolts during assembly?
Consequences:
- Thread corrosion — after a year or two, the bolts may “get caught” so that they have to be cut off.
- Uneven tightening — due to friction, the torque will be insufficient, which will lead to backlash.
- Creaks when driving (especially in wet weather).
Use copper paste for bolts and soap solution for silent blocks.