How to unscrew the wheel hub nut of VAZ 2108, 2109, 21099?
In order to quickly and easily unscrew the wheel hub bearing nut (front or rear) on a VAZ 2108, 2109, 21099, you need to know some of the features of this work.
Otherwise, unscrewing this nut yourself can present unpleasant surprises, at least in the form of a broken or bent key, and at most in the form of physical and mental injuries.
Required Tools
Special wrench for “30” or a socket with a knob
Preparatory work
Place the car on a level surface and secure it with wheel chocks, engage first gear and use the handbrake
There is no need to jack the wheel so that it does not turn when the nut is unscrewed.
Remove the protective cap from the wheel (if any)
Preparing access to the hub nut
To access the hub nut, you need to remove its protective cap and remove any grease from it (if any). If there is no protective cap and lubricant, and the shank and nut are rusty or covered with a layer of dirt, this connection must be thoroughly cleaned and filled with penetrating liquid. Then wait a while for the penetrating liquid to do its job.
How to unscrew the front wheel hub nut of VAZ 2108, 2109, 21099?
— Straightening the jammed collar of the nut
The hub nut is locked on the shank of the outer CV joint of the front suspension or the rear wheel hub axle by bending its shoulder into the longitudinal groove on these parts. Using a thin chisel and a hammer, straighten the jammed shoulder of the hub nut. To do this, we hit it with a hammer through a chisel in several places.
— Unscrew the front wheel hub nut
To unscrew a “soured” nut, it is advisable to use a special wrench, which is a reinforced curved socket wrench. The tightening torque for the front wheel hub nut is 226-247 N.m, for the rear wheel it is 186-226 N.m, which is a lot (plus the resistance of rust and dirt must be overcome), because of this you can bend or break a non-reinforced key when unscrewing it. To increase the force, you should put a piece of pipe on the wrench, thereby increasing the leverage.
If the nut and its threads are in good condition, a socket and wrench can be used.
If you manage to loosen the nut, there is no need to unscrew it completely. This can be done during the process of disassembling the suspension with the wheel already jacked up and removed. For example, when replacing the front wheel bearing of a car.
If the nut cannot be unscrewed, you will have to resort to more severe unscrewing methods. For example, heating or cutting with a chisel.
When installing the wheel hub bearing nut back, you need to tighten it to the required torque (to avoid damage to the wheel bearing), bend its collar into the groove of the CV joint shank, apply lubricant and install the protective cap.
Notes and additions
You can easily and without much difficulty unscrew the hub nut using a pneumatic impact wrench. The only problem is that not many people have it.
All hub nuts for the front and rear wheels of VAZ 2108, 2109, 21099 and their modifications have a right-hand thread.
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How to replace
To replace the VAZ 2109 hub you will need the following tool :
- jack and wheel wrench;
- a 30 mm socket wrench and a long pipe for it;
- pliers for removing retaining rings;
- simple pliers or a 12mm spanner (for unscrewing the guide pins of the rear brake drum);
- wooden block and hammer;
- chisel and pry bar;
- a universal puller for pressing out the hub or a reverse hammer;
- new hub for VAZ 2109 with article number 21083104014 or 21103104014.
The rear hub of a VAZ 2114 is replaced in the same way, since it, like the wheel bearing, fits with the Zhiguli 2108. The replacement procedure is described in the photo instructions below.
First, use a chisel or screwdriver to loosen the collar of the hub bearing nut.
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Wheel nut VAZ 2109 what thread?
For model 2109, the wheel is attached to the hub using wheel bolts. The number of fasteners depends on the year of manufacture of the model and is presented in the table below.
Important: the data presented above are the limits of values for all modifications of the car; specific figures depend on the year of manufacture.
When selecting any fastener, special attention should be paid to the thread pitch. This parameter is always indicated in the marking after the “x” sign.
Most wheel fasteners have metric fine pitch threads (M12x1.25/M12x1.5/M14x1.25/M14x1.5), which should match the threads of the studs or tapped holes in the wheel hub.
Important: the marking of the M12x1.5 mounting bolt is deciphered as follows: thread with a nominal diameter of 12 (mm), thread pitch 1.5 (mm).
Other designations of the VAZ 2109 hatchback on the Russian market: VAZ 2108, VAZ 2113, VAZ 2114, Lada Samara.
Important: years of production of all modifications of the model: 1987-2014.
| General view General view of fasteners |
Caution: The above data are the official figures of the manufacturer, however, please note that the information is for reference only and is not guaranteed to be completely accurate.
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What types of wheel bolts are there?
Let's look at what a VAZ 2109 wheel bolt is.
- hex head;
- conical clamping part;
- threaded part.
Moreover, the edges of the head turn into a cone. M12 thread with pitch 1.25 and thread length 22 - 24 mm. Thread pitch is a very important parameter. If you forcefully screw in bolts with a different pitch, you can ruin the threads in the hub, and then you will have to change it.
Such hardware is used for wheels with stamped discs. If cast (light alloy) wheels are used, then for the VAZ 2109 the wheel bolt must be longer (27 - 33 mm). Chrome plated with a conical rotating washer is often used. This washer, located under the head, protects the surface of the disc when the bolt is tightened. Its threaded part must completely fit into the hole in the hub, but no more, so that when the wheel rotates, the bolts cannot touch stationary parts.
It is worth emphasizing that you cannot put old stamping hardware on new alloy wheels. In this case, the bolts can easily unscrew under load and the wheel will fall off while driving. I don’t even want to talk about the consequences.
The clamping part of the bolt can be spherical, but it must coincide with the profiles of the holes in the wheel rim to ensure wheel alignment.
Wheel bolts for the VAZ 2109 are made with a hex head for a 17 or 19 wrench. There are also lightweight hardware with a hollow head for a hex key. There are also bolts in which the head has an internal 10-pointed star. These require a non-standard key.
To widen the vehicle track, longer bolts and spacers up to 40 mm are used.
Continuation of the broken hub nut.
Hello everyone!) They asked me to tell you how I solved the problem. I'm telling you. Sorry for the low quality photo. Phone without autofocus.
I got to Gorda from the dacha (20 km) without incident, I drove 40-50 km/hour. I checked several times to see if it was in the right place; to do this, I put a stamp on the spare wheel so that it could be seen right away.
In the morning I set about solving the problem I created.
