The vehicle management is comfortable only if there is a comprehensiveness and serviceability of all its details. However, each element, in particular those that work with friction and in the load, there is a working resource. Over time, the material loses its properties and is worn out, which leads to a breakdown of the element. Tips on the failure of the details must be taken seriously. You should not wait for the vehicle to stop somewhere on the road, you must immediately proceed to the diagnosis and troubleshooting.

Owners of automobiles with front-wheel drive know about such an unpleasant phenomenon as a crunch of a hinge of equal angular velocities. If we take into account the fact that the front suspension of the vehicle, besides its main functions, should also transmit rotation to the drive wheels from the differential gear, it is equipped with unique devices - hinges of equal angular velocities, which is abbreviated called the screen.

This element is quite complicated in its design and extremely important, respectively, it is not cheap and requires systematic attention. If the Solmin crusts, it is necessary to put a vehicle for repairs and replace the shrus.

Screw device

Sls are a hinge that provides a torque transmission during the largest corners of turn to seventy degrees, relatively axis. The Schlis (hinge of equal angular velocities) was called "Grenade".

It should be noted that the constant velocity joints comprising the following elements:

1. Housing with the driven shaft, which is a spherical bowl.
2. Inner ring with the drive shaft in the form of a spherical knuckle.
3. The separator, which looks like a ring having special openings and is intended for retaining the balls.
4. Six balls.

The operating principle of a grenade can be characterized as follows:

1. On the inner cage and the housing are arranged spherical grooves, their number equal to the number of balls.
2. The separator holds the balls, and they are in a space between the body and the fist.
3. Beads move the outer diameter of the housing via the groove and along its internal - via knuckle grooves.
4. The force which occurs during rotation of the drive shaft extends to a holder, after which - the driven shaft via balls and a knuckle that are located in the grooves.
5. Balls quite freely continue to transfer force, moving along the grooves, after the change of the angle between the driven and driving shafts.

To preserve the purity, and hence the safety of the device and the vehicle as a whole, CV joints covered with dust lip. Very often it performs protective functions lining of rubber, which prevents water, dirt and other unnecessary substances fall on the spinning mechanism elements.

Crunches CV joints, causes crunch

Experienced motorists are able to aurally determine the location of a vehicle breakdown. These skills are acquired over a long time, but the crunch of pomegranates with nothing can not be confused.

All the details that make up a CV joint, so precisely executed that do not play in the assembled form. After beads ferrule body transmits its force and rotates, and the movement of balls through the grooves allows to change the angle between the axle shafts. During the time at the place where the balls come into contact with other parts, there is development, to form the backlash. Free rolling balls and creates a sound very similar to the crunch.

Each element has its own resource production. However, there are situations where SHRUS crunches at all new cars. It can occur when overcoming obstacles, sharp cornering or acceleration.

It is possible to identify a number of the most common causes of a crunch grenades:

1. Aggressive driving or driving on poor road surfaces.
2. If the anther damaged.
3. If there are no lubricants or they are low quality.
4. If installed defective, poor quality or counterfeit products.

What SHRUS crunches, external or internal, how to identify, step by step guide

For each wheel set of two hand grenades, according to this the appearance of the characteristic crunch is difficult to determine which is defective grenade - internal or external, right or left.

The inner and outer CV joints come in different sizes, but the same design. Outdoor intense wear, respectively, are easily damaged.

For self check which SHRUS crunches, there are two ways:

1. In the course of the vehicle you need to perform a variety of maneuvers, and listen to make sounds.
2. At standstill should be alternately tugging at the hinges axle. In the intact grenade should not be a backlash. If a grenade knocks, it shows significantly large generation.

What SHRUS crunches, right or left, how to identify, step by step guide

You must first diagnose the outer CV joints. To do this, on level ground while driving as much as possible, remove the wheel in one direction and then in another direction. If SHRUS knocking when you turn to the left, respectively, defective left constant velocity joints, and if the right - right.

Wear of the inner grenades can be determined during a rectilinear motion, but should choose uneven road segment where it will pit or ditch. It is necessary, that would be the wheels dropped as low as possible. Next, you need to enter one by one into the groove left and right wheel, which will diagnose what SHRUS crunches.

Replacing the outer CV joint, step by step guide

1. Unclench Hub nut. This should be done on the car, which is on the ground.
2. Lifts the working side of the vehicle using a jack and remove the wheel.
3. Unscrew the bolts of the ball joint, the most easier to do while in the pit.
4. A rack pull laterally on the vehicle and smoothly take out the grenade.
5. To simplify the procedure for replacing the outer grenade confiscate protective cover.
6. Now you need to knock out a grenade.
7. We have a duster on the axle and put on the new constant velocity joints.
8. Tighten the clamps on dressed duster and carry out reassembly. Spun ball screws, washer mount, tighten the screws, set back wheel.

Replacing internal SHRUS, step by step guide

Replacing internal SHRUS held on the following technology:

1. First we need to ensure a secure fit of the vehicle - set the parking brake and puts a special stand at the wheel.
2. Step by step weaken fixing bolts of the wheel and the impeller lift using the jack.
3. To open access to the subsequent manipulation is necessary to remove the wheel.
4. Turn off fixing nuts and gently pull toward the lower ball joint.
5. Now we have a container under the gearbox, unscrew the drain plug and pour out the oil from the gearbox.
6. With the help of a special stripper disconnect grenade inside the gearbox.
7. Withdrawn from the grenade boxes, thus averting smoothly toward the spring strut.
8. Remove the clamps anther grenades. Along the half-axis displace the cover to the side.
9. By using a special stripper gradually remove the retaining ring.
10. Remove duster and clean the grease from the outdated shaft axis.
11. We put on a new axle shaft bellow.
12. Fill with new grease protective cover.
13. Install a new grenade and fix it with a retaining ring.
14. Vmontiruem to switch the gearbox shaft. To do this, we put aside an amortization rack and place it in a box shaft.
15. Putting it in reverse order.
16. With the help of a torque wrench, tighten all fasteners.

Tips of professionals

To avoid trouble with SHRUS or other vehicle units, you need to love your car, take care of him regularly to diagnose and to proceed with the repairs when a problem occurs.