Renault Logan can be called a special car, but the systems in it do not differ from other cars. This also applies to the anti-roll bar. The sleeve does not fail so often, but if this happens, then the replacement is quite simple and even without outside help. Some motorists calculated the work time - it took no more than 40 minutes. But before carrying out the repair, it is worth figuring out what a stabilizer bar is.
The principle of the device
The anti-roll bar is a component of the vehicle's suspension. It connects opposite wheels by means of a thrust piece. The connection is twisting. The anti-roll bar is an integral part of passenger cars with independent suspension, including Renault Logan. It is installed on both the rear and front axles.
The element is a large U-shaped bar. It is made exclusively of spring steel. In Renault Logan, the stabilizer is located across and is fixed with clamps and rubber bushings. Due to the latter, the anti-roll bar rotates. It is attached to the suspension itself either with a shock absorber (used in a McPherson-type suspension) or with levers (in the common people - a multi-link).
The bushing can fray or even burst, and then the driver will feel the deterioration of the entire suspension - the car will shake noticeably on every bump, and the body will constantly heel. It is not difficult to solve the problem - the parts have several standard sizes, among which it is easy to choose the one suitable for your car. You can also purchase a replacement from an authorized Renault dealer, but we recommend getting something stronger. An excellent but more expensive option would be polyurethane.
Replacement instructions
We got acquainted with the device and the principle, now let's move on to the practical part. To replace, it is not necessary to completely disassemble the chassis. Lay a warm mat, first placing the necessary tool next to it: keys of different sizes, screed heads and, of course, a new part, or better, two at once. It is recommended to change in pairs so that the wear goes evenly.
The first step is to remove the protective part of the stabilizer. Although this plastic cannot be called protection, we recommend installing a normal sheet of metal instead. The protection is fastened with ordinary bolts.
Now you need to unscrew the earrings. The easiest way to do this is with a standard ratchet. After unscrewing the earrings, the anti-roll bar goes down - now you can easily remove the old ones from it and replace it.
After replacing, lift the stabilizer up by hand, insert the bushings tightly into the sockets, and then fix them with earrings. And the last thing - we put the protection in place.
Before installing the new Renault Logan anti-roll bar, it is recommended to find out how it works.
Purpose of the device
Experts refer to the functions of the unit:
- stabilization of the vehicle position on the road;
- reducing body roll when cornering;
- increasing the adhesion of the wheels to the asphalt;
- even load distribution.
Renault Logan stabilizer is presented in the form of a metal beam, each side of which is attached to the wheels of the axle. Experts distinguish between the front and rear racks on the Logan. To install them, bushings are used. The structure in question is fixed to the car body.
When replacing a device, its rigidity is taken into account. This parameter of the front stabilizer has a direct effect on the steering of the vehicle at the start of movement. Due to the increased rigidity, roll increases, traction on the front wheels, and the traction on the rear wheels decreases. A low stiffness value reduces lateral roll. To ensure greater reliability, completely eliminating the possibility of a rollover of the car, a soft front stabilizer is installed.
The device in question is a component of the Renault Logan suspension. The unit connects the wheels by means of a stop. For the manufacture of a large cross-section and U-shaped bar, spring steel is used. In the considered car brand, the stabilizer is located across the body. It is fixed with clamps. The stabilizer bushings provide rotation to the main structure. The device is fixed to the suspension by means of shock absorber struts or levers.
Front link: 1 - suspension subframe; 2 - suspension arm with silent blocks and ball joint; 3 - steering knuckle with hub and bearing; 4 - shock absorber rack; 5 - bar of the anti-roll bar.
If the bushing bursts, then suspension performance deteriorates. In this case, the vehicle is repaired. Auto mechanics recommend installing polyurethane Renault Logan stabilizer bushings and struts.
Unit replacement instructions
To replace the anti-roll bar, the chassis is disassembled. Replacing the stabilizer strut, bushings and the main unit is carried out using a jack, a set of keys, tie heads. Experts recommend replacing the stabilizer components in pairs (to ensure even wear).
Pre-dismantle the stabilizer protection. It is bolted on. Since the standard protection is made of plastic, it is recommended to replace it with a metal structure. To unscrew the earrings, use a standard ratchet. The new stabilizer is raised. The sleeves are inserted into the slots, fixing the earrings. The latter operation is performed with moderate force. The protective structure is installed in place.
To replace the anti-roll bar parts, use the keys to "10", "13", the socket head to "18", TORX T40. Pre-unscrew the nut of the stabilizer bar fixing bolt. In this case, it is necessary to keep the bolt from turning. Then dismantle the lower silent block. The rubber bush is dismantled. The next step is to remove the rod fixing bolt and turn out the rear subframe mounting bolt. If it is necessary to unscrew the 2 rear subframe mounting bolts, then pre-install the stops under the structure.
Then unscrew the nut fixing the bar bracket. To remove the rubber pad, you will need to pry it off with a screwdriver and pull off the bar mounting bracket. If the silent block and pillows are worn out or damaged, then they are replaced. New parts are purchased taking into account the VIN code and technical characteristics of Renault Logan.
In the same way, remove the 2 bolt for fixing the rod and the fastening bracket. Then dismantle the stabilizer bar. Parts are installed in reverse order.
To get the job done, you will need a car stand, jack and wheel chocks.
1. We prepare the car for work and hang the front wheels.
2. Remove the front wheel (see).
3. Hold the screw with a TORX T40 wrench to prevent it from turning ....
Use a 13 mm socket wrench to unscrew the stabilizer strut mounting nut. 
The anti-roll bar mounting nut is self-locking and cannot be reused, therefore it must be replaced during assembly.
4. Remove the washer and bottom pad. 
5. We remove the screw. 
6. Remove the washer and top cushion. 
7. Remove the rubber bushing of the rack. 
8. We replace the worn out and damaged parts of the rack.
9. Install the stabilizer post in reverse order. Tighten the rack mounting nut with a torque of 20 Nm.
10. Similarly, replace the second anti-roll bar.
Anti-roll bar cushion
To complete the work, you will need a viewing ditch or overpass.
1. We install the car on a viewing ditch or overpass and prepare it for work.
2. We treat the stabilizer bar mounts with penetrating grease. 
3. Using a 10 mm wrench, unscrew the nut of the stabilizer bracket. 
Many domestic car enthusiasts prefer the French car industry in the face of many models, including the Renault Logan. Responsible drivers try to take proper care of their vehicles by providing timely maintenance. Not the last place is occupied by the car's suspension and the anti-roll bar (Renault Logan (SPU), in particular, we will consider in the article).
Diagnosing the chassis is not as difficult as it might seem at first glance. Special and expensive equipment is not required here; minimal skills and knowledge are enough.
But what is this very SPU? As practice shows, not all drivers even understand what kind of detail it is. These knowledge gaps will have to be filled.
Nice problem for car owners
There are significant advantages to using your own car. Modern life is accelerating, and it becomes problematic to be in time everywhere and everywhere. For this reason, many people buy cars, which are becoming more and more. In this regard, transport has ceased to be just a luxury item, at present for many people it is the first necessity.
However, all pleasant things have a downside. To keep your car in good working order, you need to have a decent budget to buy the same anti-roll bar, Renault Logan, for example, and strong nerves.
But the snag is still not financially, there are also technical issues. Any car, especially modern models, is complex, and it is still difficult for an inexperienced driver to understand what's what. But over time, being interested in many details, you can gain invaluable experience. This will allow you to eliminate many faults yourself, without the help of specialists.
What is SOUP?
Basically, the anti-roll bar is a connecting piece that connects the opposite wheels. And since it experiences significant loads, it must be sufficiently elastic. For this reason, such parts are currently made of the torsion type.
The design of the anti-roll bar is not made in the form of a U-shaped round bar. Often this element is made from spring steel, which, due to its physical properties, is best suited. The stabilizer can take any other desired shape depending on the car brand.
The part is attached to the body by means of rubber bushings and clamps. Thanks to this, the rod can rotate, which is associated with the peculiarities of its operation. The SPU can be placed in front or behind the car.
Necessity?
Now we need to touch on the question of what is the need for an STC. The thing is that when the car enters a turn, the body rolls in the opposite direction. And the value of such an angle is in direct proportion to the centrifugal force and the suspension device.
Without the rear or front anti-roll bar (Renault Logan also has it), the number of accidents would increase. As statistics show, most of all accidents on the roads are associated with overturning vehicles. In other words, drivers enter a fairly sharp turn at speed, and leave it already lying on their side. Is this a familiar situation? True, now it does not arise so often, since the whole point is precisely in the SPU.
Consider the case of an independent car suspension. When he makes a turn at speed, the wheels on one side are loaded more than on the other, which, moreover, on the contrary, are unloaded and tend to get off the road. This is where all the benefits of the SPU come into play. It distributes the load evenly between opposite wheels. That is, the torsion bar is untwisted, one part of it rises, and the other falls. This reduces the roll angle and the vehicle remains level.
For your information, the Renault Logan anti-roll bar can withstand loads only in the transverse direction. He is unable to cope with vertical (entry of both wheels into the pit) and angular vibrations.
Disadvantages of the stabilizer
With all the significant benefits of the SPU, it has a number of disadvantages:
- The presence of this element in the design of the chassis of the car negates the properties of independent suspension.
- Installing a stabilizer on an SUV will adversely affect its cross-country ability. There may be a risk of the wheel hanging on bumps.
- An excessively rigid connection with the wheels at the rear of the car will also have a negative effect on steering.
It is possible to eliminate the listed disadvantages, only this is due to the complication of the design. For example, in a number of SUVs, the stabilizers are disabled if necessary.
There is also a radical method - the adaptive suspension, which does well without any anti-roll bar. Renault Logan is not in danger. Unfortunately, this is only relevant for business class models.
Nuance
Not every Renault Logan has a front or rear stabilizer. Due to the continuous beam in the rear suspension, the boom is installed without struts. Vertical vibrations are insignificant here, and a horizontal bar, which is fixed on the axis, saves from lateral loads.
Sometimes the front of the car may also be missing a stabilizer. In many ways, the presence of this element is an additional option. And according to the assurances of manufacturers, this will in no way affect driving safety.
However, many drivers do not want to operate Renault Logan without an anti-roll bar and install it on their own. Only here it is worth considering that if the car is still under warranty, then in the course of any independent intervention in the structure of the vehicle, it is automatically canceled.
According to the majority of experts, the presence of an SPU in the car suspension is desirable for frequent trips outside the city. In the case when the transport is operated mainly in urban areas, then you may not feel much difference in whether there is a torsion bar or not.
Diagnostics of SPU
The stabilizer is difficult to diagnose, and therefore it is very difficult to determine whether the entire element needs to be replaced, or only its bushings or other parts. If there is any malfunction, then the knock emitted can be confused with the sound of the ball joint of the lever, which has become unusable. Some other signs may indicate a problem with the steering rack.
Before thinking about installing an anti-roll bar on Renault Logan, you should carefully examine the suspension for any backlash. For this, a pry bar will come in handy, with which you need to wring out the stand. If it was possible to do this, the SPU must be replaced.
However, this diagnostic method does not always give a result. Then it remains to remove the stabilizer and calmly inspect each hinge. If it is worn out, it is easy to move your hand.
Failure of SPU bushings is a frequent and unpleasant phenomenon. Often these elements are frayed or even burst. This is expressed in the shaking of the car when driving on any bumps. In addition, the body is constantly tilting, which is not good.
You should not ignore the signs of obvious malfunctions of the SPU or its parts, since this can result in not only unreasonably high costs. The entire suspension may need to be repaired over time.
Preparation for work
If a torsion bar malfunction has been identified, it makes no sense to contact the nearest service station. You can do all the work yourself, you just have to prepare everything you need. For your information, the article for the Renault Logan antiroll bar is 6001547137. Among the tools you will need:
- open-end wrenches for 10 and 13;
- key T40 (Torx);
- head 18;
- jack;
- stand.
After everything is prepared, you can go directly to the procedure.
Work to replace the SPU
The work can be done all alone, but it is much better to enlist the support of acquaintances or friends. Then everything will go smoothly and you will definitely not be bored.
The whole procedure can be broken down into several stages:
- First, you need to raise the front of the car, and install the belay stands under the subframe. You cannot do without this if you need to remove the entire barbell, and not just its racks.
- Remove the protection, treat all threaded connections with WD-40 special agent (liquid wrench).
- Next, you need to unscrew the nut from the bolt on which the stand of the SPU is held, and the fastener itself is knocked out by means of a spacer and a hammer.
- After that, you can proceed to unscrewing the bolts securing the rack itself.
- Before removing the struts, you need to throw off the brake hose from the bracket so as not to damage it.
- Then you can remove the bushings that hold the posts. They also need to be replaced.
- At this stage of replacing the anti-roll bar with Renault Logan, you can proceed to the direct dismantling of the SPU. Here you need to hold the nut with a Torx wrench. After unscrewing it, the sleeve is removed.
- At the next stage, you need to unscrew the fasteners that hold the SPU on the stretcher (there are two of them).
- Now you can unscrew the nuts securing the brackets. After that, it remains to pry on the pillows with a screwdriver and take them to the side. They also need to be replaced.
Assembly is carried out upside-down. All bushings and silent blocks are recommended to be replaced in any case, even if they are not damaged.
Outcome
As you can see from the instructions above for replacing the gimbal, the whole job is really simple. It is enough to adhere to the sequence of actions. This once again suggests that the Renault Logan has a simple device, at least its suspension.
But if there is no time to fiddle with the anti-roll bar on Renault Logan due to the heavy workload, you can entrust this matter to the specialists of the auto repair shop. They will do all the work quickly and professionally. The cost of work is usually 500 rubles. Here everyone decides for himself whether to pay for a qualified service or enrich himself with experience. In any case, car owners will not lose.
Most Renault Logan owners are interested in the process of replacing such low-resource chassis parts as the lateral stabilizer struts. Diagnosing a failed element does not provide for the need for special and expensive equipment, and replacing the stabilizer struts is very simple, as well as replacing the stabilizer rubber bands.
Lateral stability is important at the time of maneuvering in bends and on country roads, and the suspension that is present in the suspension design allows the car to be provided with this quality. Due to the perception of constant loads from lateral displacements, the struts are subject to wear. And then it is necessary to replace the rubber bands of the stabilizer and other parts. For the purpose of simplifying repair, the manufacturer has provided for the simplicity of the design of these elements, which can be safely called consumable.
About modifications
Some modifications of Renault Logan provide for the presence of a stabilizer in the rear suspension structure. Those owners of the model who have versions without rear stabilizers are given the opportunity to install them themselves.
The unpleasant moment here is the loss of warranty service for the Renault Logan car, which is in this status. This factor keeps many owners from trying to interfere with their own hands (installing a stabilizer) into the factory structure.
Features chassis
The rear axle of Renault Logan does not provide for the presence of struts, since the structure is based on a continuous beam. Initially, this node is able to do without the presence of the elements in question. Vibrations in the vertical plane are very negligible, and the body is protected from lateral rolls by a horizontal bar fixed on the axis.
If you touch the front suspension, then there is a transverse stabilizer bar in its design. The manufacturer claims that the absence of this element is not capable of having a negative impact on reducing the level of safety in traffic. But practice shows: the presence of this part will not interfere with the confident behavior of the Renault Logan car.
How is it diagnosed?
It is rather difficult to independently diagnose a failed strut when replacement of stabilizer bushings or other element is required. The knock of its hinge is very similar to that made by a worn out ball joint on the lever. If there are other negative sound effects, then you can suspect the Renault Logan steering rack in the wear of its elements.
A sufficiently effective search for the source of knocking will be the impact on each suspension hinge individually. To do this, we squeeze the rack with a pry bar and if this action succeeds, then we definitely resort to replacing the worn part, sometimes it is possible to replace the stabilizer bushings. The most reliable way to detect a faulty stabilizer post is to dismantle it, after which the worn hinge will produce play under the influence of manual force.
Replacement
The work involves the presence of a minimum of tools, because replacing the stabilizer struts is quite simple.
We stock up in advance:
- With open-end keys on: "10" and "13";
- Key "TORX T40";
- Head with size 18.
The procedure is performed according to the following algorithm.
- We hang out in front of Renault Logan by means of jacks. Do not forget about securing your car with stands. We recommend installing them under the subframe, which is especially important when dismantling not only the struts, but also the stabilizer bar itself.
- Before starting the "operation", we treat the threaded sections with a penetrating substance.
- Unscrew the nut from the stabilizer bar fixing bolt, then knock it out with a hammer.
- Next, we unscrew the bolts that secure the rack itself directly.
- Until the strut is removed, "throw off" the brake hose from the bracket, which will ensure its safety during the designated work.
- The last step is to dismantle the rack mount bushings (they must also be replaced).
- Having dismantled both racks, we redirect our efforts to remove the rod. Here you should apply the technique of holding the nut using a Torx wrench of size 40. We unscrew it and then take out the bushing itself.
- Next, we move on to unscrewing the two bolts that secure the anti-roll bar to the surface of the subframe.
- Unscrew the nuts for fixing the brackets. After these manipulations, the cushions with which the anti-roll bar is equipped, pry them with a suitable screwdriver and take them out (you can take them to the side).
- It is recommended to install new analogues instead of dismantled pillows.
The assembly process is carried out according to the reverse algorithm. In this unit, it is desirable to replace the entire list of components, which will allow you to forget about the malfunction within a certain period.
Output
The material presented here shows the sequence of actions aimed at implementing the procedure for replacing the stabilizer struts in the Renault Logan model. It is not complicated, which once again confirms the practicality and constructive simplicity of this vehicle.
