Driveshaft Gazelle: repair and replace

Propeller shaft is an element of the transmission system for vehicles with full or rear wheel drive. This element is used to transmit torque from the transfer box or transfer box to the rear or front axle. Prop shaft ‘gazelles" also performs this function. Let's examine the device and learn how to maintain and repair.

History driveshafts

Steel Shaft called propeller by the name of the inventor, who worked on its creation. This was an Italian specialist in medicine and mathematics – Girolamo Cardano. It was the first to come up with a mechanism on the hinges, by which today it is possible to connect the rotating parts and assemblies.

Experts-historians believe that the first cardan shaft was invented by Leonardo da Vinci. Very interesting here is that the author of this development wanted to be another person. Robert hook, but his patent, he to could not immediately. He issued it later.

To Use this design in cars began in 1898. The first was Louis Renault. This is a simple but at the same time a very efficient drive, which is the only practical option for transmission of torque. Today almost all types of vehicles use a propeller shaft.

"Gazelle" of: device shaft

This element consists driveline. And she, in turn, consists of intermediate shaft, intermediate supports, tail shaft and three hinges. We will look at each of them.

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Intermediate shaft

This node is made in the form of a hollow pipe from a steel alloy. The peculiarity of the shaft – a tube with thin walls. With the rear face of the shaft is fixed a shank which has outer splines. The front end portion of the shaft has a special plug. To this fork through a special hinge attaches another moving fork. This part has internal spline hole, and is also used gradetracker.

Front fork

This item is installed in the rear extension of the crankcase on the gearbox. She is engaged with the slots that are cut into the secondary shaft. When triggered rear suspension, propeller shaft ("Gazelle" or "Valdai", doesn't matter) can move longitudinally. In order to compensate for these movements, the shank can be moved on the splined part of the output shaft. This connection is constantly lubricated with oil which is located in the transaxle case.

An intermediate support

This item is made of rubber. It is corrugated. From the inner part to the support of this method of curing the attached ball bearing closed type. The outer side of the leg is equipped with a special bracket.

Thick rubber does not allow to transmit vibrations from the movements of the transmission parts of the body, and also gives the opportunity to travel driveline longitudinal axes.

The Bracket by means of bolts securely attached to the cross member of the frame of the car.

The Bearing, which is mounted in the support, has a very long service life. He does not need any maintenance during its entire shelf life.

The Rear shaft are also made of steel pipe with thin walls, but to the mechanical parts attached plug. Through special joints in the front of the part is fixed the splined fork of the middle element. She, in turn, mounted on the splined portion of the intermediate shaft. So, there is a first bearing of the propeller shaft. "Gazelle" is further supplied with a plug. This item is not moved along the slots, a bolt which secures the fork. On the other side the rear shaft with cross mounted flange, which has a special centering belt. Flange secured by bolting to the leading gear wheel of the main transmission gearbox.

Joint propeller shaft

The Shaft is equipped with a hinge, which consists of forks, and crosses. She is in her design has four needle bearings. Each bearing has a cage 20 of the rollers. Their diameter is 2 mm. These needles are manufactured on high-precision equipment. They are specially selected for these bearings Assembly with the crosspiece. Do not attempt to replace the needle withdrawn from the various bearings. Also not only the replacement of the cross-piece propeller shaft. "Gazelle" is also impossible to repair, just replacing some bearings. What is allowed is the replacement of the entire kit as a whole. Change it must, even if damaged only by a single bearing.

For the lubrication of the cross-piece is equipped with a grease fitting. From this lubricator the grease that is injected with a syringe, on the inner lubricating channels gets on the rollers of the bearings. That oil is kept inside the crosspiece is equipped with a special cuff of rubber. At the time of discharge of grease to the spring in the cuff is stretched and the excess oil flows out of the holder.

The Needle bearing is pressed into the holes and plugs are securely engaged with the circlips.

These parts are Lubricated according to the tradition, transmission oils, which is not always convenient and effective. Thus, the crossbar and forks have to fill with oil very often. Recommended for the lubrication of the use composition No. 158. This lubricant is so thick that will allow you to forget about the bearings incross-piece for a long time.

Typical fault

Like any other piece driveshaft ("Gazelle" in this plan not an exception) can fail. But many problems can be solved. Let's look at the most basic malfunction of this node.

Problems associated with vibration

So, if you felt a steady vibration when the vehicle is moving, then there may be a deformation of the pipe shaft. To eliminate this need not apply any special or strict measures. Often just replace the pipe completely or to order repairs of cardan shafts. "Gazelle" can be fixed at any garage where mechanics carry out such work. When carrying out replacement or repair, be sure to perform a balancing shaft.

In addition to the deformation of the pipe vibration can occur if the loose fasteners of the rear shaft to the bridge.

For this, it is possible to independently tighten loose connections.

Often the vibrations occur because of the separation of the balancing plate from the torque tube shaft. In this case, it is necessary to replace this pipe or repair it in the service station. But here also have to do the balancing.

If the vibration is felt steadily, you should check detail for possible backlash in the bearings. Here to repair the useless and to get rid of the vibrations will help replace cross driveshaft. "Gazelle" after such an operation will be good as new.

If there is runout in the mounting belt on the pinion flange on the gearbox the rear axle, then there will be enough replacement of the flange. If the runout of the moving plugs at the checkpoint became considerably more, you should replace the extension cord of the CAT. This wear occurs due to wear of the bushings from stylebubble.

In the case where the increased backlash in the joints with splines, if the bearings are worn, or propeller shaft yoke, "Gazelle" is repaired by replacing old parts with new ones.

Failure, discovered when removing the cardan

Unfortunately, not all of the problem elements can be identified in the course of movement of the car. Many malfunctions can be detected only after removal or overhaul.

So, if leaking oil from the swivel, it indicates that cuff, which should keep the oil, is damaged. It must simply be replaced. If the cap rotates together with the sleeve, that replaced the cross of the cardan shaft and then the shaft is balanced.

If after covering a distance of 40,000 km the oil is derived from all oil seal then you need to perform minor repairs. If it is difficult to figure out how to disassemble propeller shaft ("Gazelle"), photos of components from our article will help to significantly accelerate the process of removal and disassembly. To perform this repair, you need to remove the transmission, disassemble the joints, clean the oil passages of the cross, to replace the folding springs and put them on the seals. You should then put everything back and the shaft to get balanced.

How to remove the driveshaft from the car?

What you need to perform a repair of driveshafts? "Gazelle" is necessary to prepare this operation. It is a simple procedure, but you should know the correct course of action.

Before you remove the transmission, you need to advance with the help of paint to mark locations relative angular position of the fork and shaft. These labels are very easy on the reflectors moving plugs and extension cord of the CAT.

The Threaded part of the bolts should be possible to efficiently clean caked mud. Then the bolts are unscrewed. Then turn the nuts that attach the intermediate support. As a result, the bearing is free from the cross member of the frame. Then the whole driveline shifted forward and disconnected from the flange on the axle. To facilitate this operation, you can use the hammer, but only through the copper or brass strip. You need to hit the flange on the rear hinge.

You can then remove the front sliding end of the driveline.

End of the driven shaft need to put a label position.

When the transfer is completely removed, you need to protect the shank of the fork from possible contamination. And requires the same hole in the CAT.

Now you can start to eliminate problems.

Buy new

Acquiring a new site to replace damaged, you should definitely consider the size of cardan shafts. "Gazelle" is no exception. The fact that different models have different modifications. So, on models with standard wheelbase nodes installed standard length. These items can be purchased at many automotive stores.

Worse is the case with extended car models. These shafts are available on request, and not all of them can be purchased.

Today a lot of information about the elongation of this element independently. So, the propeller shaft ("Gazelle") extended may be necessary if the owner wants to increasethe wheelbase of the car. This gives certain advantages – the great length of the cargo compartment.

The driveshaft is the same item as everyone else. This site it is possible to fix. With proper care and regular maintenance it will last a very long time. And if you need a replacement, remember that for a car the length of the drive shaft ("Gazel" and "Valday" in this series is no exception) is the most important parameter.