Lada Largus front suspension design - diagram, video

Front suspension device Lada Largus

So, the front suspension of the Lada Largus has a similar structure to the Renault Logan MPV van, since the entire car was made entirely on its basis. In fact, the front suspension is independent of the MacPherson type and is built around a full-fledged subframe, which has not been done on the Lada before. Shock absorbers are conventional telescopic gas-oil, springs are cylindrical screw.

Below are the right and left levers on two silent blocks and a ball, as well as a stabilizer bar.

The subframe itself is attached to the side member of the engine compartment and the power units of the engine shield using bolts.

In essence, the design of the front suspension on the Lada Largus is as simple as possible, but as reliable and efficient as possible, which makes servicing this unit inexpensive and fast.

Below in the diagram you can see how the front suspension on your Lada Largus is designed.

Ways to increase the clearance of Largus

The domestic station wagon is very popular due to its unpretentiousness and reliability. One of the important indicators is solid ground clearance. Transporting goods with these vehicles is a common occurrence. And this inevitably leads to an increase in the load on the suspension, namely on the shock-absorbing struts, which sag due to weight, resulting in a decrease in ground clearance.

We must not forget the quality of Russian roads. It is sometimes impossible to move through potholes and potholes without damaging the suspension. In any case, the amount of ground clearance in this regard is crucial. Because of these factors, many Largus owners try to increase the ground clearance with their own hands. Today there are several ways to do this inexpensively and quickly.

Increasing ground clearance with your own hands

In order to increase ground clearance (suspension lift), car owners use several basic techniques:

• installation of wheels or tires with a larger radius;
• installation of special spacers for shock-absorbing struts;
• replacing the springs with stiffer ones, as well as installing extended shock absorbers.

Some people use air suspension for these purposes. From the point of view of rationalism (and Largus is mainly used by people who prefer the practicality of a station wagon), this is unjustified. Firstly, the equipment is expensive, and secondly, not every car owner can install air suspension with his own hands. Plus, the compressor and receiver will take up useful space in the trunk, which is again impractical.

This type of suspension tuning is not popular.

Front suspension arms Lada Largus

The front suspension design of Largus uses two triangular arms - right and left. They are based on two silent blocks that secure the lever to the subframe, as well as one ball joint connecting the lever and the steering knuckle. This is one of the most vulnerable components of the Largus front suspension, as it takes all the impacts, as a result of which the ball joint breaks and the silent blocks wear out.

In early Lada Largus models, the ball joint was changed separately, and in relatively new ones - only together with the lever. Silent blocks can be changed without problems and buying them is not difficult.

Article numbers of the front levers: 6001547520 (left, assembled) 6001547519 (right, assembled).

Conclusion

Of course, detailed diagnostic procedures and timely elimination of the causes of the malfunction will allow you to quickly repair the suspension. In this matter, it is better to trust the specialists of service centers, who will help prevent major repairs by replacing some components or tightening the connections that secure them.

Similar articles:

1. Steering column Lada Largus - its removal and possible malfunctions
2. Diagnostics of Largus ball joints: identifying faults and finding optimal methods for eliminating them
3. How to flash a Lada Largus radio
4. Crash test results of Lada Largus
5. Active and passive safety of Lada Largus

Front suspension subframe Lada Largus

The Lada Largus subframe is a stamped-welded square that serves as a frame for the remaining elements of the front suspension. The subframe is attached to the body with 4 bolts, and at the rear the subframe has fasteners for the anti-roll bar. Also at the edges, levers are attached to the subframe with two bolts on each side. The subframe looks like this:

Characteristics and design

The suspension on the Lada Largus has proven itself to be reliable, soft, energy-intensive and as simple as possible. Like many components, it migrated almost unchanged from Renault Logan. Manufacturers decided not to modernize this Logan part, which was recognized by car enthusiasts as indestructible on Russian roads.

Front suspension device

The main structural details are the following elements:

• stretcher;
• levers;
• spherical bearing;
• silent blocks;
• repeated fist;
• hub;
• shock absorber with spring;
• anti-roll bar.

Experienced car enthusiasts will immediately understand that structurally this is an ordinary MacPherson, but there are some dissimilar parts. Unlike other models of the Volzhsky Automobile Plant (with the exception of the Vesta family), the Lada Largus suspension is equipped with a subframe to which an anti-roll bar with silent blocks is attached.

The front suspension of the Largus is independent, and the subframe serves to increase rigidity.

Also, in previous AvtoVAZ models, the ball joint is changed separately from the lever. Largus uses the Logan suspension platform, so here the ball joints are changed only together with the lower arm. At the same time, we must pay tribute: the suspension design is reliable and durable.

The next difference between Largus is the mounting of the anti-roll bar. Here it is not rigidly attached to the strut with the shock absorber; it is attached directly to the lower arm. In this design there are no so-called tips, which are located on the rod connecting the strut and stabilizer. They usually wear out over time and become a source of suspension noise.

If you do not take into account the ball joint, which is assembled with the lower arm, the Largus front suspension is simple, and most importantly, repairable. Basically, problems begin to arise with fairly active mileage (more than 100,000 km). Due to the simplicity of the device and the small number of elements, even beginners can diagnose a fault.

Largus rear suspension diagram

Rear suspension features

The basis of the entire structure is a semi-independent beam. Inside it there is a stabilizer bar, which is rigidly fixed to the lower arms. The latter, in turn, (namely, the amplifiers) are supported by shock-absorbing springs.

The main feature of the Largus rear suspension is that the spring and shock absorber are not a single module, but are located separately from each other.

Structurally, the Largus rear suspension consists of a beam, shock absorbers, springs and silent blocks (not counting fasteners and other connecting elements). There are usually no special problems with the rear suspension, even with high mileage. The system, both front and rear, is reliable and easy to repair, and spare parts are always available.

Front suspension shock absorber Lada Largus

The front suspension shock absorber (or strut) is attached to the steering knuckle from below with two bolts and from above through a support to the wing cup. Serves to absorb shocks from the suspension, ensuring a smooth ride. For a smooth return to the starting position, a coil spring with the same pitch of turns is used. Just like the lever, the shock absorber is subject to wear, as it takes impacts from the wheels.

Replacing the front strut does not present any difficulty, as we wrote about in one of our articles.

Front suspension arm ball joint - removal and installation (repressing)

Attention. The front suspension arm ball joint can only be replaced once. For this purpose, ball joints from spare parts are marked with the letter “R” and are equipped with a locking spring 4, Figure 6-1. The ball joint, without retaining spring, is a standard part and can be replaced.

Note: For test results of ball joints from different manufacturers, see the end of the article.

The ball joint with retaining spring is a replacement part and cannot be replaced. In addition, it should be borne in mind that by the time the second set of ball joints (R) wears out, the silent blocks of the lever will already be worn out. If it is necessary to replace the ball joint again, replace the front suspension arm assembly.

Figure 6-1 - Distinctive features of the ball joint supplied as spare parts: 1 - marking of the ball joint supplied as spare parts “R”; 2 — ball joint; 3 — front suspension arm; 4 - locking spring

Jack up or place the vehicle on a two-post lift, apply the parking brake and turn off the ignition.

Remove the front wheel

Remove the front suspension arm. (see here)

Clean the front suspension arm from dirt (metal brush).

If there is no special equipment for pressing out

Using a powerful slotted screwdriver, evenly (from different sides) pry the support body under the shoulder and, leaning on the edge of the lever.

. press the ball joint out of the hole in the lever.

We inspect the lever eye - there should be no cracks or breaks around the hole.

Before pressing in the new ball joint, thoroughly clean the seating surface of the lever hole from dirt and corrosion.

Place a tool head or a piece of pipe of suitable diameter under the lever and insert a new ball joint into the hole. Applying blows with a hammer to the mandrel (you can use a tool head) resting on the shoulder of the support body, we press the support into the hole of the lever until it stops.

Attention. The lower control arm ball joint is supplied in a protective case. Remove the cover only after pressing the ball joint into the front suspension arm and installing the lock spring 4, Figure 6-1.

If special equipment is available

Remove the ball joint boot clamps and the boot (flat head screwdriver).

Place a stop marked “D1” on the press table, install the front suspension arm on the stop, install a mandrel marked “D2” on the ball joint body for pressing out and press the ball joint out of the front suspension arm (hydraulic press type KS-124 (Kochubeyevsky), stop marked “D1” and mandrel marked “D2” for pressing out from set Tav. 1929).

Place a stop marked “R1” on the press table, install the front suspension lever on the stop, install a new ball joint in the hole in the lever, install a mandrel marked “R2” on the ball joint body for pressing and press the ball joint into the front suspension arm (hydraulic press type KS-124 (Kochubeyevsky), a stop marked “R1” and a mandrel marked “R2” for pressing out from the Tav. 1929 set).

Other operations

Install the retaining spring into the groove of the ball joint, using the protective boot as a guide.

Remove the transport cover from the ball joint.

Install the front suspension arm.

Install the front wheel

Check and, if necessary, adjust the alignment angles of the front wheels

Results of comparative tests of the strength of ball joints from various manufacturers

Tests were carried out by Za Rulem magazine in 2021. The participants were ball joints suitable for Lada Largus, Renault Sandero and Logan cars.

All products met the standard, but the difference in results is double.

Results of spectral analysis of ball joint pin material

Results of measurements of the hardness of the ball surfaces of the supports

Results of measuring the surface roughness of balls and pins of ball joints

Results of measurements of pullout and extrusion forces of ball joints

General view of balls with brief results

Kroner (K330120) , country not specified Retaining ring - for expansion pliers. The boot fits into the lever hole with difficulty. The fit of the support is tight; in the freezer the elastic band fell apart at -50°C - this is not good. We cannot recommend

Lada Standard (LS000-2904192-81) , Russia Retaining ring - for expansion pliers. The boot fits freely into the lever. The tension in the support fit is average. The product was not afraid of fifty degrees of frost. The result is second place in our tests. We recommend

Renault group (41 60 25 23R) , France The most expensive product. The retaining ring is thin and wire. The boot fits into the lever freely. Landing of the support with medium force. The power reserve is the smallest. At a temperature of -40°C, the anther fell into pieces. We cannot recommend it.

Note: The product sold under the name “Renault group” with code 41 60 25 23R cannot be classified as original spare parts. The Renault representative informed us that neither the packaging nor the label corresponded to the original ones. In addition, the reference of original Renault spare parts consists of ten characters, not nine. At the same time, Renault does not produce a ball with a side groove: the original products have a groove machined across the entire surface of the cylindrical part of the pin.

Sasic (7574013) , EU The boot easily fits into the hole in the lever, and the support is fixed with a thin wire and an ax ring. In the freezer at -50°C, the anther lost its integrity. We cannot recommend

Sevi (7013-4192 ), Russia The retaining ring is wire, frankly “frail”. The boot fits easily into the hole in the lever. The tension when landing the support is average. The product passed the frost test. The result is third place. We recommend

TRT (RS8018) , South Korea The cheapest support. The locking ring is powerful - for pliers. The boot squeezes into the lever. The fixation in the hole is tight. The low roughness of the ball and significant extrusion forces indicate an increased service life of the product. First place! We recommend

No obvious defects were found during mechanical tests - and this is good news. However, thermal tests eliminated half of the participants: only Lada, Sevi and TRT remained. It was these ball joints that made it into the top three. We award the absolute victory to the TRT product: at the lowest price in the sample, it promises the highest resource. And the weak wire retaining ring of the Sevi pushes it to the third level, giving way to second place to the Lada Standard product.

Video

Anti-roll bar Lada Largus

This unit serves to reduce body roll and sway when turning and sharply changing lanes. It is a rod made of elastic metal that works in torsion. Attached to the subframe through bushings and to the right and left arms through special stabilizer struts. The struts and bushings are consumable parts that need to be replaced when worn. The stabilizer itself very rarely requires replacement.

Installation of wheels with a larger radius

Largus comes standard with 15R wheels. Many motorists choose the 16 or 17 radius option instead of the one proposed by the factory. Additionally, this makes the car's exterior more attractive. However, this option also has a significant drawback, namely the unstable position of the car when driving, as well as malfunctions in the ABS system and some related sensors.

Installation of spacers

The most budget option (and popular) is to install special spacers, which are sold at any auto parts store. The only thing that is required from the car owner is the removal of the suspension struts. The parts themselves are unified and suitable for many VAZ cars. Spacers are installed between the rack and the body bowls (as an option - between the beam and the rack).

Replacing strut parts

One of the best methods for increasing ground clearance is to install stiffer springs and longer shock absorbers. As a rule, such racks are approximately 20 mm longer than standard devices. In combination with reinforced springs, they are able to significantly increase ground clearance, and the car does not sag all the way when transporting the maximum permissible weight of cargo. The only drawback is the higher price of such kits.

Repairing the suspension yourself and increasing the ground clearance on the Lada Largus is easy to do if you have at least minimal car repair skills. If you have never done this before, it is still recommended to carefully study the instructions. And if you are unsure of your own abilities, it is better to turn to qualified car service specialists.

Features of air suspension on Lada Largus, Largus Cross, cargo:

• Reduced wear on springs with shock absorbers (standard springs on your car will last longer, because air suspension will reduce the load on them, as well as on other suspension elements)
• Elimination of noise, suspension vibrations and bump stop impacts when overloaded (the situation when a commercial vehicle rests on the bump stops is completely eliminated)
• Possibility to install on tired springs (after installation, springs requiring replacement will last for a long time)
• Correct position of the body under any load (always a horizontal position of the body of a commercial vehicle, regardless of the load, and this means the correct operation of the head light with a reduction in braking distance)
• Reducing roll when the car sways (the air suspension prevents the car from rolling onto an overloaded side and is always in a horizontal position)
• Increased comfort for the driver and passengers (a significant increase in comfort when driving cars on bad and uneven roads, both for the driver and passengers (on passenger minibuses)
• Increased profits from transportation (an air spring is an opportunity to transport 1.5 times more cargo in 1 flight + savings on replacing springs, as well as traffic police fines for overloading
• Ability to control vehicle overhang when loading and unloading (adjusting rear clearance to level the floor of a commercial vehicle booth with the level of the ramp floor for convenient loading)
• durability of the air suspension (does not require any additional maintenance, and works effectively for 5 - 6 years under any operating conditions, be it frost, dirt, salt or reagents. Operating pressure up to 15 atmospheres)
• Increased comfort with soft ride possible
• The “Goat” effect is eliminated

Installation of the pneumatic kit:

The air suspension kit is installed in addition to the standard springs and does not make changes to the standard suspension elements. Therefore, this kit does not require changes to the vehicle's title. The air spring is placed between the frame with springs on special mounting plates included in the kit. The upper mounting plate is placed on the frame in the standard holes; an additional transverse brace is placed between the fastenings to strengthen the frame and distribute the load. The lower mounting plate is placed on the bridge.

I’m buying Largus - which one should I choose?

Take a car with a brand new 16-valve K4M engine - it’s peppy and predictable. Consumption, however, is high, but this problem is partially solved by a small upgrade of the gearbox. And hurry up with your purchase! Such cars have not been made for three years.

This Lada Largus, as well as many other proven used cars, can be purchased from Automama

.

• When planning to ride off-road, it is always better to put chains on your wheels in advance. If the need for chains is not obvious, make sure you have bracelets. Antibuks will also come in handy!
• Few people know about car accessories that don’t cost a lot of money and bring real benefits! We recommend taking a look at the windshield drain, hood and trunk struts, and radiator guards. Their installation is simple, the benefits are undeniable!

Lada Largus aftermarket: indestructible suspension and capricious electrics