Do-it-yourself repair of the steering column vaz 2104

In detail: do-it-yourself repair of the steering column of the VAZ 2104 from a real master for the site my.housecope.com.

Welcome!
Steering gear - if you go to a car shop and buy it new, then it will take not so little money, if you go to the service and ask for it to be fixed, then you will also give a lot of money, it’s easier to buy it right away, so many people prefer to do something yourself, especially when you do some work yourself, you can be 100% sure that nothing will break soon (Of course, if the work was done correctly).

Note!
In order to repair the control gearbox, you need tools, namely: Wrenches (Set), you will also need a screwdriver, a hammer, a beard, and we also recommend that you find some kind of mandrel or pipe section, but about what size the mandrel and pipe section should be , you will know only when you remove the gearbox from the car!

Summary:

Where is the steering gear located?
In the engine compartment and immediately under the vacuum brake booster (Indicated by the blue arrow), it is located, for clarity, a little lower you have already seen that it is shown in the photo with a red arrow, so you should not have problems finding it, but only this gearbox can to be in your dust and dirt and therefore you will not immediately find it, so keep this in mind.

When to Repair a Steering Wheeledektor?
The gearbox must be repaired if the threaded part on its shafts is damaged, and due to damage or severe wear of the threaded part of both shafts that are in the gearbox, the following steering problems may occur, namely, the steering wheel can rotate and have play at the same time, in addition, the steering the wheel can rotate, but the wheels themselves don’t, and the steering wheel can simply lock in one place and not move anywhere and will stand, oil can still flow from the steering gear, but this will already happen for several reasons, namely if the gearbox housing is damaged and has through cracks (For example, this can happen after corrosion), also if something happened to the oil seals, then the oil will also constantly flow out of the gearbox and, as a result, the steering wheel will spin harder (If the oil leaks out) and on the body or at the bottom of the cars, you will also constantly notice traces of oil leaking from the gearbox.

Video (click to play).

How to repair the steering gearbox, it is also the steering mechanism, it is also the steering column on the VAZ 2104, VAZ 2105, VAZ 2107?

Disassembly:
1) At the very beginning of the operation, you will need to remove it from the car, since repairing the gearbox if it is installed on the car will be much more difficult and there is no point in it. (For information on how to remove the gearbox, read in detail in the article titled: “Replacing the steering gearbox on a car”)

2) Now that the reducer is removed, take it and lay it on a clean surface, then take a wrench and use it to completely unscrew the nut that secures the bipod to it as shown in the photo below:

3) Then, using a special puller, compress (If this word is not familiar to you, then you can read the word: “Remove” instead of it) the bipod from the shaft on which it is put on, for this, first you will need to install the puller on the bipod as shown in photo, after installation, as a result of screwing in the bolt, which is indicated by the red arrow, your bipod will slowly begin to be removed, and all this will happen due to the fact that the bolt will press on the tip of the shaft (indicated by the blue arrow) and thus the bolt will, as it were, wrap itself in this tip and the bipod in connection with this will be slowly removed.

Note!
If you do not have such a puller and you do not need to purchase it, since you do this procedure very rarely, then you can use two hammers and use them to knock down the bipod, for this we rest the tip of the shaft (Indicated by the red arrow) against a wooden block and set after that, two hammers on the bipod, select one of the hammers so that it is of a large shape, you can even take a sledgehammer, and take the other hammer the most ordinary one and after that with a large hammer start pressing on one of the bipod stops, and hit the other bipod stop with an ordinary hammer and so way the bipod will be removed!

In extreme cases, if you don’t feel sorry for the bipod, then it will be possible to cut it off using a cutting machine, but you only need to cut it off in the place where it is fastened to the shaft itself, but when cutting off, do not touch the shaft itself, otherwise it will have to be changed to a new one !

4) After that, when the bipod is removed, you will need to drain the oil from the steering gear, on how to do this, read the article which is called: “Replacing the gear oil in the steering gear on a VAZ”.

Note!
This article, to which the link is given, shows how to drain the oil on the installed gearbox, but you have it removed, but this does not play a big role!

5) Next, take a wrench and use it to unscrew the four bolts (Indicated by arrows) that secure the top cover to the steering gear and after they are unscrewed, remove it as shown in photo 2.

6) Next, grab the shaft on which the bipod was put on and then remove it from the gearbox (it would be more correct from the crankcase) together with the roller that is on it.

7) Now let's move on to the worm shaft, in order to remove it, you will need to unscrew the four bolts that secure its cover with a wrench, and after the bolts are unscrewed, remove the cover that closes the worm shaft and remove in addition all the gaskets that will be located behind the cover (see photo under number 2).

Note!
These ball bearing adjusting shims are sold in auto shops with a thickness of 0.1 and 0.15 mm!

8) Then, picking up a hammer (Preferably made of soft metal, and if it is not there, then place another small plank under a regular hammer when you hit the worm shaft so as not to damage or deform the shaft itself with blows from a conventional hammer), gently knock out with the help of it, the worm shaft from the gearbox housing, together with the bearings that are on it.

9) Then, using a screwdriver, remove two cuffs (Both are removed in the same way, so the example in the photo is shown only on the cuff that goes to the worm shaft), one of them will need to be removed that goes to the worm shaft, and the other that goes to the shaft on which bipod is installed.

10) Next, using a punch and a hammer, knock out the outer race of the second bearing as shown in the figure.

Assembly:
1. Basically, all parts are assembled in the reverse order of their removal, and all internal parts are lubricated with gear oil before assembly, in addition, when assembling, you need to know some nuances, firstly, always remember that the bipod on the shaft is installed in only one position , that is, on the bipod, if you look at it, there is a wide groove, this very groove on the bipod should coincide with the double slot that is on the shaft and which is also indicated in the photo below with a screwdriver.

2. Secondly, if you decide to change the shaft on which the bipod is installed, pay attention to the screw head (Indicated by the blue arrow) and the groove that is present on the shaft itself (It is also indicated by the red arrow), so here is the axial clearance between the groove of the shaft and the screw head must be no more than 0.05 mm, so you will have to adjust the axial clearance when installing a new shaft, and it is regulated by selecting the thickness of the adjusting plate.

Note!
For clarity, so that you have at least some idea of what an adjustment plate is, it was indicated in the photo below with a red arrow, in total these plates have eleven sizes and a thickness of 1.95 to 2.20 mm, the increase in each size is 0.025 mm!

3.Thirdly, when you install the inner ring of the bearing, it is installed using a pipe segment, that is, a segment of a suitable diameter is found and then a hammer is taken, then with their help and not very strong blows of the hammer, we press the bearing inner ring into the crankcase.

Note!
When the inner ring (Indicated by the blue arrow) is installed, then install another separator with balls (Indicated by the red arrow) into it, and after installation, insert the worm shaft (Indicated by the number 11) on which you will then need to put on the outer bearing separator (Indicated by the number 6) and using a hammer (not with strong blows) press in the outer ring which is indicated by the fifth digit!

4. And finally, you will need to install the cover and all gaskets and then press in both cuffs (They are also called seals) with a hammer and a piece of pipe, while one cuff is a cuff for the worm shaft and the other for the bipod shaft, but before put them on, lubricate them with Litol-24 grease or something like it.

Note!
When you install the worm shaft, with a set of shims (Gaskets are indicated by the number 4 in the photo above), make sure that the moment of turning the worm shaft is from 2 to 5 kgf • cm, then put the shaft on which the bipod is put on and adjust the gap in engagement by the moment of turning the shaft (This gap should be within 7–9 kgf•cm, and when the worm shaft is turned 30 ° to the left and right, it should gradually decrease to 5 kgf•cm)!

What else, when all the operations are completed, fill in gear oil into the crankcase of the gearbox, up to the lower edge of the filler hole, this is about 0.215 l!

Additional video clip:
If you want to learn how the steering gear is repaired, then watch the video below.

Note!
There is very little video information on the Internet on disassembling and assembling the steering gearbox of VAZ 2104, VAZ 2105, VAZ 2107 cars, but there are detailed instructions for disassembling the gearbox of a UAZ car, gearboxes from VAZ and UAZ are not much alike (They have a different shape, but although here and there there is a worm shaft and a shaft on which the bipod is put on), so check out this video instruction for disassembling the steering gear, it will most likely come in handy for you!

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Carefully inspect the working surfaces of the roller and worm for signs of wear, jamming, dents or scratches. Replace worn and damaged parts.

The gap between the bushings and the bipod shaft, which should not exceed 0.10 mm. If the gap is greater than specified, then replace the bushings using the A.74105 mandrel.

On the inner surface of the bushings of the bipod shaft of the VAZ 2105 there are spiral grooves that extend only to one side of the bushing. When pressing the bushings, position them so that their ends, which have groove outlets, are inside the crankcase opening of the VAZ 2107, and the groove outlets are located opposite each other. The ends of the bushings should be buried in the crankcase hole by 1.5 mm.

Lubricate new bushings with transmission oil before pressing.

After pressing into the crankcase, finish the bushings with a reamer A.90336 to a size of 28.698–28.720 mm. The mounting gap between the bipod shaft and bushings should be within 0.008–0.051 mm.

Check the ease of rotation of the bipod shaft roller on the ball bearing.

The ball bearings of the VAZ 2104 worm and the roller must rotate freely, without jamming, and there must be no wear and damage on the surface of the rings and balls.

Details of the crankcase of the steering gear lada classic
1 - crankcase
2 - bipod
3 - lower crankcase cover
4 - shims
5 - the outer ring of the worm shaft bearing
6 - separator with balls
7 - bipod shaft
8 - adjusting screw
9 - adjusting plate
10 - lock washer
11 - worm shaft
12 - upper crankcase cover
13 - sealing gasket
14 - bipod shaft sleeve
15 - worm shaft seal
16 - bipod shaft seal

Axial clearance between the head of the adjusting screw 8 and the groove of the bipod shaft 7. The clearance should not exceed 0.05 mm. If it is larger, replace the adjusting plate 9 with a thicker one.

Steering gear parts
1 - steering gear housing
2 - shaft seal
3 - intermediate shaft
4 - upper shaft
5 - fixing plate of the front of the bracket
6 — an arm of fastening of a shaft of a steering
7 - upper part of the facing casing
8 - bearing sleeve
9 - bearing
10 - steering wheel
11 - lower part of the facing casing
12 - details of fastening the bracket

Condition of fixing plates 5. If they are deformed, replace them.

Spare parts are supplied with adjustment plates in eleven sizes, with a thickness of 1.95 to 2.20 mm; the increase of each size is 0.025mm

One of the elements of the VAZ 2107 car, which received a number of improvements in this model in comparison with the previous ones, is the steering column. How is her device different? In the VAZ 2107, the steering column shaft consists of two parts connected by a cross. Thanks to this design, the safety of the driver is significantly increased, since in the event of a collision, the shaft simply bends at the point of articulation, and does not cause serious harm to a person. Also, the shaft in the VAZ 2107 acquired bearings, so turning the steering wheel requires much less effort.

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The steering mechanism of the VAZ "seven" has a rather complex design, which provides reliable vehicle control in different traffic situations. The steering wheel is endowed with good information content, which eliminates driver fatigue when traveling long distances. When turning the steering wheel on a stationary car, there are some difficulties. However, as soon as the car starts moving, the steering becomes less rigid and the handling improves.The steering mechanism has one nuance - a small backlash, which is the norm. This is explained by a considerable number of parts in the gearbox and the presence of rods. After modernization, a safety column was installed on the VAZ 2107, which has a composite shaft. Its design consists of two cardan-type joints, which allow the shaft to fold in the event of an accident. In this way, injury to the driver is excluded. Image - Do-it-yourself repair of the steering column vaz 2104

The steering gearbox is designed to transfer force from the steering wheel to the steering rods to turn the front wheels at a given angle.

Before proceeding with the repair of the steering column, you need to familiarize yourself with its device, as well as the principle of operation. The design consists of the following main elements:

a node designed to transfer force from turning the steering wheel to actuators;
a steering column that turns the wheels to the desired angle.

The steering mechanism consists of:

composite shaft with cardan transmission;
steering wheel;
worm type steering gear.

The design has the following components:

pendulum;
rotary levers;
steering rods.

Steering design: 1 - steering gear housing; 2 - shaft seal; 3 - intermediate shaft; 4 - upper shaft; 5 - fixing plate of the front part of the bracket; 6 — an arm of fastening of a shaft of a steering; 7 - upper part of the facing casing; 8 - bearing sleeve; 9 - bearing; 10 - steering wheel; 11 - the lower part of the facing casing; 12 - details of fastening the bracket

Since the outer rods have two parts, this allows for adjustment of the toe angle. The steering functions as follows:

The driver acts on the steering wheel.
Through the cardan joints, the worm shaft is set in motion, through which the number of revolutions is reduced.
The worm rotates, which contributes to the movement of the double-ridged roller.
The secondary shaft of the gearbox rotates.
A bipod is mounted on the secondary shaft, which rotates and drags the tie rods along with it.
Through these parts, force is applied to the levers, thereby turning the front wheels to the angle desired by the driver.

A bipod is a link that connects the steering gear to the steering linkage.

As the vehicle is used, the steering column may experience malfunctions that require repair. The most common of them are:

oil leakage from the gearbox;
extraneous sounds in the mechanism;
It takes a lot of effort to turn the steering wheel.

The steering gearbox on the VAZ 2107 is located in the engine compartment on the left side under the vacuum brake booster. With insufficient experience at a glance, it may not be found, since it is usually covered with a layer of dirt.

The steering gearbox on the VAZ 2107 is located under the vacuum brake booster on the left side of the engine compartment

Due to the constant friction in the steering mechanism, elements are being developed, which indicates the need not only to adjust the assembly, but also possible repairs.

To dismantle the steering column on the "seven", you will need the following tools:

a set of keys;
collar;
heads;
steering puller.

After preparing everything you need, perform the following step-by-step actions:

The car is installed on a lift or a viewing hole.
Clean the steering rod pins from dirt.
The rods are disconnected from the bipod of the gearbox, for which the cotter pins are removed, the nuts are unscrewed and the finger is squeezed out of the bipod of the steering device with a puller. Having unscrewed the nuts, disconnect the steering rods from the bipod of the steering gear
The steering column is connected to the steering wheel by means of an intermediate shaft. Unscrew the fasteners of the latter from the gearbox shaft. To remove the steering column, you will need to unscrew the fastening of the mechanism shaft to the intermediate shaft
The gearbox is fastened with three bolts to the body. Unscrew 3 fastening nuts, remove the fasteners and dismantle the steering gear from the car. To make it easier to remove the assembly, it is better to turn the bipod all the way into the column body. The steering gear is attached to the side member of the car with three bolts.

When the mechanism is removed from the vehicle, you can begin to disassemble it. Image - Do-it-yourself repair of the steering column vaz 2104

Details of the crankcase of the steering mechanism: 1 - crankcase; 2 - bipod; 3 - lower crankcase cover; 4 - shims; 5 - the outer ring of the worm shaft bearing; 6 - separator with balls; 7 - bipod shaft; 8 - adjusting screw; 9 - adjusting plate; 10 - lock washer; 11 - worm shaft; 12 - upper crankcase cover; 13 - sealing gasket; 14 — bipod shaft sleeve; 15 - worm shaft seal; 16 - bipod shaft seal

From the tools you need to prepare:

standard set of keys;
head at 30;
bipod puller;
vise.

The work is carried out in the following order:

After disassembling the steering gear, carry out its troubleshooting. All elements are pre-cleaned by washing in diesel fuel. Each part is carefully inspected for damage, scoring, wear. Particular attention is paid to the rubbing surfaces of the worm shaft and roller. The rotation of the bearings must be free of sticking. There should be no damage or signs of wear on the outer races, separators and balls. The gearbox housing itself should not have cracks. All parts that show visible wear must be replaced.

Oil seals, regardless of their condition, are replaced with new ones.

When the replacement of defective elements has been carried out, you can proceed with the assembly of the assembly. Parts that are installed inside the crankcase are lubricated with gear oil. Assembly is performed in the following order:

Using a hammer and a bit or other suitable device, press the inner bearing race into the steering assembly housing. The inner bearing race is pressed in with a hammer and a bit.
A separator with balls is placed in the cage, as well as a worm shaft. The cage of the outer bearing is mounted on it and the outer race is pressed in. After installing the worm shaft and the outer bearing, the outer race is pressed in.
Mount the cover with gaskets and press in the seals of the worm shaft and bipod.A small amount of lubricant is preliminarily applied to the working edges of the cuffs.
The worm shaft is placed in the mechanism housing. With the help of shims, the torque of its rotation is set from 2 to 5 kgf * cm.
Install the short pull shaft.
At the end of the work, grease is poured into the steering column and the plug is wrapped.

Installation of the node on the machine is carried out in the reverse order.

The adjustment work of the steering gear on the VAZ 2107 is resorted to when the steering wheel has become hard to rotate, jamming has appeared during rotation, or when the steering shaft is moved along the axis with directly located wheels.

To adjust the steering, you need to know which element is responsible for what.

To adjust the steering column, you will need an assistant, as well as a 19 key and a flat screwdriver. The procedure is carried out in the following sequence:

The machine is installed on a flat horizontal surface with straight front wheels.
Open the hood, clean the steering gear from contamination. The adjustment screw is located on top of the crankcase cover and is protected by a plastic plug, which is pryed off with a screwdriver and removed. Before adjusting the gearbox, remove the plastic plug
The adjusting element is fixed with a special nut from spontaneous unscrewing, which is loosened with a key of 19. To prevent the adjusting screw from loosening spontaneously, a special nut is used.
The assistant begins to intensively rotate the steering wheel to the right and left, and the second person achieves the desired position in the gear engagement with the adjusting screw. The steering wheel in this case should rotate easily and have minimal free play. Adjustment is carried out by turning the adjusting screw with a screwdriver.
When the adjustment is completed, the screw is held with a screwdriver and the nut is tightened.

To reduce the friction of the internal elements of the steering column, gear oil GL-4, GL-5 with a viscosity grade of SAE75W90, SAE80W90 or SAE85W90 is poured into the mechanism. In the old fashioned way, for the node in question, many car owners use TAD-17 oil. The filling volume of the gearbox on the VAZ 2107 is 0.215 liters.To avoid premature failure of parts of the mechanism, it is necessary to periodically check the oil level and replace it. It is worth taking into account that the liquid from the gearbox, although slowly, leaks, and the leakage occurs regardless of whether the column is new or old. The level check is performed as follows:

With an 8 key, unscrew the filler plug.

The filler plug is unscrewed with a key for 8

Using a screwdriver or other tool, check the oil level in the crankcase. The normal level should be at the bottom edge of the filler hole.

To check the oil level in the gearbox, a screwdriver or other tool is suitable

If necessary, top up the lubricant with a syringe until it starts to flow out of the filler hole.

Tighten the plug and wipe the steering gear from smudges.

As for changing the oil in the steering gear, this procedure should be carried out once every one and a half years. If the decision was made to change the lubricant, you need to know how to perform the procedure. In addition to the new lubricant, you will need two syringes of the largest possible volume (purchased at a pharmacy) and a small piece of washer hose. The procedure is carried out in the following order:

The filler plug is unscrewed with a key, a piece of tube is put on the syringe, the old oil is drawn in and poured into the prepared container. Old grease is removed from the steering column with a syringe
With the second syringe, new lubricant is poured into the gearbox to the desired level, while it is recommended to rotate the steering wheel. A new lubricant is drawn into the syringe, after which it is poured into the gearbox
Screw the plug and wipe off traces of oil.

Video (click to play).

Despite the complex design of the G7 steering mechanism, each owner of this car can perform preventive maintenance, repair or replacement of the assembly. The reason for the repair are the characteristic signs of a malfunction in the mechanism. If parts are found with visible damage, they must be replaced without fail. Since the steering column is one of the critical components of the car, all actions must be performed in strict sequence.