If, when moving the vehicle, characteristic tapping comes from under it, and a strange vibration is felt in the cabin, then it is most likely the time to replace the crosses of the cardan shaft. Of course, these symptoms may indicate not only the failure of the kandannaya crosses, and the other faults, therefore, first of all, it is necessary to conduct diagnostics. About this further in the article.

Cross of the cardan shaft, device, signs of a driver's hearing

Cardan shaft is an element of transmissions of all all-wheel drive and rear-wheel drive cars. This is a shaft that transmits torque from the transfer box or the gearbox to the rear or front axle reducer. It is worth noting that the cardan shaft is so unique and simple that in many decades its design has actually not changed.

The drive shaft may be a single-section, two-piece and three-section. They consist of several components - two crossbars, shaft, seals, sliding fork, fastening parts and many other elements, which, as a rule, depends on the design. The weight, thickness and length of the shaft is due to the dimensions of the vehicle. It is worth noting that sports cars are completed with single-section shafts. For example, a single-generating cardan is used in the Nissan GT-R design.

Cardan shaft is one of the most maintainable car elements. It is easy enough to dismantle, and the repair is based on the replacement of the suspension bearing and cross.

Signs of malfunction of the crosses of the cardan shaft can be attributed:

1. Feeling of beating and knock in the chassis.
2. When touching from the scene, a clear metal ringing is heard from the chassis.
3. The presence of vibrations in the car.

Diagnostics breakage, how to make diagnostics with your own hands

For self-diagnostics, it is necessary to go down to the vehicle. With one hand, fix the shaft, and the other is the flange of the leading gear gear. Then turn them towards each other. The presence of even the smallest backliness indicates that the case is really in the cross. Although, if one bearing was worn, the backlash may not be. In this case, check the condition can only be visually, for which you should disconnect the drive shaft from the flange with the key to "13" and estimate the state. Before disassembly, apply labels in order to avoid incorrect assembly.

Tools and fixtures for repair

1. Pliced \u200b\u200bfrom metal (copper or aluminum).
2. Crosshead screwdriver.
3. Passatia.
4. Facial and horn keys, the dimensions of which "27", "13", "12".
5. Hammer.

Spare parts which parts are needed when replacing the crosses of the cardan shaft

1. Retaining rings.
2. Suspended bearing.
3. Cross of the cardan shaft.
4. In addition, new nuts and bolts may be required, as they are able to accuming, resulting in often damage when unscrewed.

New Cross, why should it have the same marking number as the previous cross

Remember that the new crossed must have the same marking with a removable analogue, otherwise it will be impossible to solve the problem with the breakdown.

How to remove the cross, step by step instructions

The first thing that needs to be done is to mark how the forks are arranged crossing, since at the manufacturer, they are necessarily balancing and when reinstalling the cardan will produce vibrations. First, remove stop rings. It is best to do this with the help of special sharp passage. In specialized workshops, bearings are squeezed with a hydraulic or manual press, but during independent repairs it is possible to solve this issue with the help of a paint with soft material and a hammer. Next, take a pair of bearings from the plug. With another pair of crossbar bearings, we carry out a similar operation. You should also clean the seating holes and grooves for locking rings. You can use the skin (shallow or medium grain). In addition, it is possible to remove small burrs using a file using a file, which sometimes occur when knocking out bearings.

How to put a cross, step by step instructions

The second stage is the installation of new crosses. From both sides it is necessary to remove the cups and fill in the eye of the crossbar, then neatly dress one of the cups so as not to scatter the needles in it. Next, use the paint to settle the cup until the removal for the locking ring appears. I mount it, then turn the cardan.

Property Tips: How to Pressing Cups of Crosses, Important Moments when installing a suspended bearing which lubricant is used

Next, it is also gently shifted by a cross in the direction of the cup and wear it similarly to the previous situation, that is, until the groove of the locking ring appears. Mount the retaining ring. At this stage, be especially careful because the installation of the second cup is more complex work than the installation of the first, especially if you did not make it earlier. However, despite the complexity, it is still feasible. The main thing is to be patient and do it slowly.

Now go to the hanging bearing. When the crossed is removed, insert the cutting end of the cardan in the flange of the old coupling. Using the key to "27", we unscrew the nut, which is fastened to the front shaft of the knitard hinge.

When installing, do not forget to apply lubricant (most manufacturers are equipped with additional lubricant bearings). It is not necessary to lubricate the spikes themselves, since it is possible to appear an airbag that is able to greatly impede the desired accurate positioning of the elements. Before the installation itself, remove the protective cuff from one spike, as it can create an obstacle to the installation of crosses in the plug.

How to avoid skew when assembling crosses, why it is important

Strictly observe the technology of assembling the cardan hinge. Special attention should be paid to the exception of the distillation, since the work done will be in vain and will have to re-disassemble the cross. The best option for pressing will be special vice. When applying, the flipper and the hammer be as cautious as possible, since there is a risk of damaging the cross.