How to remove play in the front axle Niva 21213

Published March 26, 2018

Cool!
Please tell me what year is the Niva and how many splines do the drives have? I just have the same situation, my car is a 2001 VAZ 21213, and I don’t know which drive to buy: 22 splines or 24? There is no way to disassemble it yourself, and the service center doesn’t want to wait for the order to arrive from the store, so that the car sits for 4 days and takes up a hole. Thank you in advance. At zero I have more play in gearboxes and drives))

Oil as the color of childish surprise

The backlash in the field will never go away, and the new drives have the same backlash, I changed the assembly twice, it still didn’t go away, I’m thinking of changing the transmission completely and installing a new one.

Adjusting the front axle of a Niva is one of the key operations that ensures comfortable and accident-free movement on roads of any quality.

Possible faults

The need to adjust the elements of the front axle is assessed by the presence of noise and vibrations that occur in various operating modes of the VAZ 21214. Thus, conditionally acoustic signs can be divided into two groups: • Constantly recorded; • Fixed during braking with the help of an internal combustion engine or acceleration.

The nature of the sounds may resemble: • Howling (wear of the main pair); • Crunching, “trolleybus” hum (destruction or overtightening of the shank bearings, unscrewed drive shaft nut, axle bearings, incorrect adjustment of the gearbox gears); • Intermittent “shuffling” (differential bearing). The difficulty of diagnosis lies in the abundance of extraneous noise produced by other components of the car.

Technical section

The process involves replacing the support washers with new ones - thicker than before. There are 7 standard sizes to choose from in increments of 0.05 mm within 1..1 mm. Washer material is bronze or steel. In this case, the gears are installed tightly, but can be turned manually.

Lateral clearance in the GP and differential bearing preload In accordance with the instructions, the lateral clearance and bearing preload are adjusted using tool A.

We fix the crankcase on the workbench so that its mating plane is horizontal.

We install the pattern ruler in the bearing bed with its edge so that the contact of the bed ruler occurs along the line. The thickness of the adjusting ring is determined by the difference between the gap and the deviation from the nominal position of the new gear, taking into account the sign of the deviation.

We install the adjusting ring of the required thickness on the new drive gear.

We remove the device from the Chevrolet Niva rear axle gear housing and remove the inner rings of the front and rear bearings with cages and rollers. We insert the drive gear into the gearbox housing. We install a new spacer sleeve, the inner ring of the front bearing with a separator and rollers, and an oil deflector.

Preparation

The main stage is preceded by preparation, which includes: 1. Draining the oil from the RPM through the drain hole;

2. Disconnecting the driveshaft with a 13 key

3. Removing the right wheel drive.

4. Dismantling the lower ball joint on the left side.

5. Removing the suspension extension.

6. Removing the gearbox from the brackets on the right and left, using a stop.

This is followed by disassembling the gearbox, thoroughly cleaning the surfaces from dirt and grease, and troubleshooting the components.

Drive gear adjustment

To carry out the operation, use the original device A.95690, mandrel A.70184 or an analogue made according to the drawing.

The crankcase mating plane is positioned so that it assumes a horizontal position. Then an absolutely flat metal rod is installed on the bearing bed. The distance from the bar to the mandrel is measured by inserting the adjusting rings from the set into the gap under the bar in increments of 0.05. The measured value (crankcase base) is consistent with the correction applied to the drive gear. When assembling the unit, it is recommended to abandon the standard spacer sleeve to prevent repeated repairs. Instead, a non-deformable steel bushing 48 mm long is suitable (with a margin, shorten if necessary).

During turning, the parts control the force when turning the gear (should be 157–196 Ncm); for used bearings, a torque of 39.2–58.8 Ncm is valid. The use of a proprietary dynamometer 02.7812.9501 is not necessary.

Acceptable accuracy will be provided by a household steelyard. When working with it, you should wind one end of a 1 m long cord around the flange, and secure the other end to the scales. By pulling the device in a perpendicular direction, fix the turning torque. So, new bearings should provide 7-9 kg, and with mileage - 2-3 kg.

The process involves replacing the support washers with new ones - thicker than before. There are 7 standard sizes to choose from in increments of 0.05 mm within the range of 1.8-2.1 mm. Washer material – bronze or steel. In this case, the gears are installed tightly, but can be turned manually.

Tags: rear axle

Comments 9

universal joints and a smore shank then

Does the play appear when you release the clutch more sharply from the rear axle? Do you hear a blow? And when the clutch is softer, is everything good?

this is possible

very vague description of the problem. There are several places in the bridge where a gap may appear. Most often the spacer sleeve becomes loose. There are several reasons for this: defects, incorrect adjustments, and even the driver’s driving style. If the bushing is manufactured in violation of the technology, then it does not work with elastic deformation (spring-loading), but with simple deformation, which does not create the necessary tightening force for the nut, the bushing simply bends. If the cardan has wear on the crosspiece and vibration, then this vibration is transmitted to the flange, and it unscrews the shank nut, the bushing is not clamped between the ends of the bearings and rotates freely, wearing out its ends against the ends of the bearings. This bushing becomes unusable. tightening the nut will no longer help, but will harm the gearbox. If you move back abruptly (with axle box), or tow, moving backward (catching the cable to the front hooks), this accelerates the wear of the bushing. Often the gearbox hums just after such loads, the reason for this is deformation of the bushing and relaxation of the tension of the shank. The main pair may wear out. there will also be backlash. It happens that the splines on the axle shafts grind. there will also be backlash. you need to hang the wheels, disconnect the cardan and, by rocking the wheels or the shank flange, feel and listen for where there is play.

Not long ago, the rubber band on my jet rod burst and the bridge began to wobble. I removed and replaced the rubber bands, it will cost 100 rubles! Check all the rods with the installation tool!

and if you mean that the axle suspension is wobbling, then changing the jet rods costs 1000 and the work is the same

or tighten the crosspieces or the shank, if that doesn’t help, then change the entire cardan and tighten the nut on the shank, the change will be...

The play is in the rear gearbox. Is it being renovated at all? Or is it easier to buy a new one?

drop by any service center and tighten the shank))

Front axle repair video

The peculiarity of the Chevrolet Niva is that it has permanent all-wheel drive. Of course, if you find yourself off-road and there is mud or swampy terrain, this feature will help you overcome these obstacles quite easily, but as a rule, most of the time the car is used in urban environments where there is asphalt, and there is no need for this function. Therefore, you can disable the front axle on the Niva, and we will look at how to do this and what you need to know in this article.

How to adjust the front axle in the field

To carry out adjustment work on the front axle, the manufacturer provides special pullers, mandrels and devices.

However, due to limited distribution and high cost, their presence is not necessary, although it is desirable to save time and accuracy of settings.

Since the main parts of the RPM correspond to similar elements of the REM, the correspondence of technological gaps and the procedure for carrying out repair operations can be traced.

All-wheel drive features

Chevy Niva is, as mentioned above, an SUV, which, unlike a regular car, has permanent all-wheel drive and its ground clearance is higher than that of a regular car, this is done so that it can be used without problems where there is off-road. While driving, the front and rear axles of this car are constantly running, and they are controlled by the transfer case. To reduce gasoline consumption, one of the bridges is turned off; when turning off, you should avoid surfaces where there is snow, ice or dirt. Let's look at what mechanism can be used to shut down.

Pros and cons of chassis

Significant advantages are:

• Components for the Chevrolet Niva chassis are always available at most dealers. The cost of these spare parts is much lower than that of competitors' cars.
• High maneuverability in all conditions.
• The chassis has a large departure angle of 350 degrees and entry angle of 370 degrees. The presence of such characteristics allows you to overcome any obstacles on the road.
• Smooth and easy movement on the highway.
• Soft ride in off-road conditions thanks to reduction gear and forced locking of the center differential.

Along with the benefits that the owner of Shnivy receives, he is also rewarded with the following disadvantages, by the way, coming from the advantages:

• Noticeable vibration of the body when driving, especially from the rear axle.
• High fuel consumption due to the heavy rear suspension and permanent all-wheel drive. For example, a car engine “eats” about 8 liters of gasoline on the highway and 14 liters in the city. Such consumption, for example, is equal to the fuel requirement for a Toyota LC 200.
• The chassis is equipped with poor quality seals, bushings, silent blocks and ball joints. You need to pay attention to these parts after 15,000-20,000 km.
• Wheels move to the side when driving after 25,000 km due to broken wheel bearings.

Also interesting: Chevrolet Niva suspension: front, rear, device and tuning

Along with the benefits that the owner of Shnivy receives, he is also rewarded with the following disadvantages, by the way, coming from the advantages:

• Noticeable vibration of the body when driving, especially from the rear axle.
• High fuel consumption due to the heavy rear suspension and permanent all-wheel drive. For example, a car engine “eats” about 8 liters of gasoline on the highway and 14 liters in the city. Such consumption, for example, is equal to the fuel requirement for a Toyota LC 200.
• The chassis is equipped with poor quality seals, bushings, silent blocks and ball joints. You need to pay attention to these parts after 15,000-20,000 km.
• Wheels move to the side when driving after 25,000 km due to broken wheel bearings.

Bridge disconnect mechanism

Engineers specifically developed a block for this purpose that removes torque from the front drive driveshaft, thereby disabling the front axle. This unit is not installed at the factory, but if desired, you can install it yourself. This device is controlled from the cabin, thanks to levers that control the transfer case. Most drivers disable it by removing the front driveshaft, and some even remove the rear driveshaft, thereby making the Niva front-wheel drive. This method is of course not prohibited, but it can lead to failure of such elements as:

• Transfer case supports
• Output shaft bearing
• Cardan

How to replace the shank oil seal on the front axle

If an oil leak is detected, the oil seal should be replaced. To replace we need:

• Key for fourteen and thirteen.
• Screwdriver Set.
• Hammer.
• Torque wrench.

Before replacing the shank oil seal, that is, repairing the field yourself, you need to turn off the engine and turn off the gear, drain the oil from the front axle crankcase, then disconnect the front propeller shaft from the drive gear of the front axle gearbox flange.

We remove the housing of the internal hinge of the front wheel drive smoothly from engagement with all the gears of the axle shafts. It is necessary to determine the moment when resistance to rotation of the nut flange occurs and replace the oil seal.

Everything is installed back in the reverse order, after which oil is poured into the gearbox.

Installation of a special block

It is installed as follows:

1. The axle drive housing has a cover; unscrew it with five nuts
2. Remove the shaft and coupling
3. We install the bridge block in place of the removed cover.
4. Installing the transfer case in place
5. If necessary, add transmission oil

The cost of this mechanism is around seven thousand rubles, but by installing it you will feel more confident when driving off-road, and at the same time save on gasoline when the need for all-wheel drive is not needed.

How to disable front wheel drive

There are two levers under the dashboard, one serves to change gears, and the second controls the transfer case. Below is the shutdown diagram:

To summarize, we can conclude that if this mechanism is not used, then significant disruptions will occur in the operation of the entire chassis system in the car; in order to avoid negative consequences, it is better to install this mechanism.