Front suspension VAZ / Bogdan / 2110 / 2111 / 2112

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Knocks

If you start to hear knocking noises coming from the front suspension, this could be caused by several reasons:

• The rack has certain faults;
• The ties on the cross member, the cushions are worn out or the bolts are loose;
• The attachment to the body was not strong enough;
• The springs have failed;
• The hinges are worn out;
• The rubber part of the suspension has broken its integrity. The knock should be clear, like the impact of metal on metal;
• Wheel alignment is out of balance.

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↑ Design description

Front suspension

– independent with telescopic hydraulic shock absorbers, helical coil springs, lower wishbones with braces and a stabilizer bar. The basis of the suspension is a telescopic hydraulic shock absorber strut 16. Its lower part is connected to the steering knuckle 19 with two bolts. The upper bolt 18, passing through the hole in the rack bracket, has an eccentric collar and an eccentric washer. By turning this bolt, the camber of the front wheel is adjusted. The telescopic strut is equipped with: a coil spring 7, a polyurethane foam compression stroke buffer 9, as well as an upper strut support 12 assembled with a bearing 11.

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Rear suspension

Rear suspension parts

Shock absorber mounting

Rear suspension shock absorber parts

The rear suspension beam consists of two trailing arms 13
(see figure Rear suspension parts) and a connector
12
, which are welded together through reinforcements.
14
are welded to the suspension arms , as well as flanges
15
to which the rear wheel axles are bolted together with the wheel brake shields.
16
are welded to the suspension arms , into which rubber-metal hinges
1
.
Bolts pass through the hinges, connecting the suspension arms with stamped-welded brackets 2
, which are attached to the body side members with welded bolts.

Springs 11

The suspensions rest with one end on the shock absorber cup
9
, and with the other end, through an insulating rubber gasket
10
, in a support welded to the inner arch of the body.

The rear suspension shock absorber is hydraulic telescopic, double-acting. It is attached with a bolt 9

(Figure Shock Absorber Fastening) to the suspension trailing arm bracket.
The rod is attached to the upper support 5
of the suspension spring through rubber pads
6
and a support washer
3
.

Shock absorber parts are shown in the figure Rear suspension shock absorber parts).

At the hub 13

(see figure Shock Absorber Mounting) a double-row angular contact bearing
12
, similar to the front wheel hub bearing, but smaller.
Unlike the front wheel hub, on which the inner bearing ring is installed with guaranteed interference, on the rear wheel hub, bearing 12
on axle
14
has a transitional fit.

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Design and purpose of the VAZ 2110 front suspension

Let's look at how the front suspension of the VAZ 2110 is designed, how well it complies with modern standards, what functions it provides, and what attention it requires.

Purpose

First of all, it is intended for fastening the wheels, and is also designed to provide shock absorption for the entire front of the car, its stability on the road while driving, the possibility of a number of wheel adjustments, namely along the axis of rotation (the angle of its longitudinal inclination), toe, camber.

VAZ 2110 front suspension assembly diagram

Main nodes

Let's talk about its device.

The most important element of the front suspension is its strut (hydraulic telescopic) - indispensable in the matter of shock absorption, that is, ensuring a comfortable ride, without much shaking (as far as possible) over bumps and potholes on our roads. It is thanks to the rack, or rather its steering knuckle with an upper bolt equipped with an eccentric washer and a belt, that makes it possible to change the camber of the wheel.

Telescopic strut of the front suspension of VAZ 2110

The following are installed on the rack:

• Special spring;
• Buffer limiting the compression stroke, made of polyurethane;
• Upper support. Its structure is as follows: it is attached to a stand, to which the mudguard is attached with self-locking nuts. Therefore, if you make repairs yourself, do not miss this moment - you cannot use ordinary nuts;
• A bearing that makes it possible to rotate the stand together with the wheels;
• A shock absorber in which a spring and a plunger are installed for better performance.

The ball joint combines the lower parts: the steering knuckle and the lever. The longitudinal braces, lower arms, and supports that the crossbar has are connected to each other by rubber-metal hinges. With the help of special washers, it becomes possible to adjust the longitudinal inclination of the turning axis. An angular contact, non-adjustable bearing secures the wheel hubs.

Ball joint VAZ 2110

The cross member is the rod to which the lower arms are connected. In the middle it is attached to the body, in which it is helped by rubber cushions. This, in short, is the design of the front suspension. Now let’s look at possible malfunctions, which in some cases can be fixed with your own hands, in others it is better to contact specialists.

Cross member VAZ 2110

Knock

If you hear a knock in the front suspension while driving, the main reasons may be:

• Faults in the rack;
• The bolts have become loose, the stretch marks or cushions with which the cross member is equipped may have worn out;
• The attachment to the body has become loose;
• The rubber parts have collapsed, and the knocking has a distinct “metallic” sound;
• A “limp” or even a broken spring knocks;
• Wear of hinges;
• Knocking due to wheel imbalance.

In principle, in any of the listed cases, repairing the VAZ 2110 front suspension, done by yourself, can help, during which you need to replace a worn part or (in the latter case, the reasons why a knock is heard) - balance the wheel.

Vehicle pull to the side

The car pulls to the side when driving straight. The reasons for this malfunction may include:

• Each spring has its own compression ratio. In this case, the spring that has lost its elasticity must be replaced;
• Tires have different pressures. We check and correct;
• The rubber element near one of the strut supports was destroyed. At the same time, a characteristic knocking sound is also heard while driving. The problem is solved by replacing this element;
• The wheel alignment angles are incorrect. Increased tire wear may be associated with this malfunction. If you can’t handle it yourself, it’s better to entrust this task to specialists.

Tire wear

This may be due to improper driving (rash acceleration, braking, exceeding the permissible load of the vehicle), or other reasons:

• violations of wheel alignment angles;
• high wear of the hinges;
• wheel imbalance.

Suspension check

Knowing the meaning and design of the suspension, you will be able to check its condition every time you inspect the machine on a pit (overpass) and perform maintenance.

Pay special attention to the condition of the protective covers on the ball joints. Check to see if any deformations, cracks or dents have appeared on the suspension due to shaking and bumps.

Be sure to check the condition of all rubber and rubber-to-metal parts, as well as the ball joint of each wheel. Remember: a malfunction noticed and corrected in time is much less evil than repairs when everything is already falling apart.

Suspension modifications

Many owners of the VAZ 2110 do not consider the factory suspension to be ideal, and tune it to improve stability and handling on the road.

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Replacement of front struts of VAZ 2110, 2111 and 2112