Fist rotary (UAZ). Description and Replacement
Fist rotary is designed to change the direction of the car by increasing pressure on the steering levers, which provides a change in the angle of the wheels.
This part of the vehicle is oneof the most significant. The turning fist (UAZ, Volkswagen, BMW - is not important) is the basis for the hub and is attached to other parts due to ball bearings. Usually, two types of parts are distinguished: with a hub and with a spindle.
Approximate cost in the market
Another can be a swinging fist left or right. Externally, they are almost identical, but since these parts are directly related to the steering, it's best to be safe. On one of them is located the bobbin of the steering mechanism, on the other there is no exit to the longitudinal traction. It is for these reasons that their cost differs.
Auto parts can be purchased at car dealerships, atcar market, order on various sites. The right rotary fist costs about 8400 rubles, the left price starts at 6530 rubles. These are the approximate prices of kulaks on UAZ-31519.
It is not worth saving, even if the cost of domestic spare parts will be higher than the Chinese ones. It is more than likely that the expensive part will last much longer.
How to make the right choice?
When buying on the market, you should pay attention tosaddle, where the bearing of the rotary knuckle is mounted (the inner cage should sit flat without the help of a hammer), as well as the appearance of the part: whether there is corrosion, whether there are cracks or curvatures. Any crack can subsequently turn into a very difficult problem to solve.
Part construction
The hub and brake disc belong to the parts of the turning fist. In addition to the most important part, they are part of the basic set of spare parts designed for steering.
So, the first is the protective casing, then the cotter pin,the swivel fist, the suspension arm, the bearing for the hub, the lock ring and the wheel drive hinge (outer). To this list, you can add bolts, nuts, brake disc with caliper and bearing.
But the most important in this list is still a rotary fist. UAZ will serve as a car, on the example of which a scheme will be constructed for the removal of the kulak.
Replacement and repair
Despite the apparent complexity, the replacement of such adetails, like a fist rotary, is not particularly difficult. The first thing to do is put the vehicle on the handbrake, then under the rear wheels substitute the rollers and lift the front of the machine with a jack.
Further the technological process is carried out according to the following plan:
- Remove the brake disc.
- Remove the pin securing.
- Remove it in the assembly with the wheel release clutch, brake disk shield and hub.
- Remove the axle shaft.
- Detach the tip of the steering rod from the pivot.
- Remove the bolts securing the ball joint to the flange of the axle housing.
- Remove the wheel stop.
- After mounting the assembly, press out the shank of the ball bearing from the half-axle housing. To do this, use a puller for ball joints.
- Carefully remove the required part, in our case, the fist rotary.
The most difficult thing behind, is that which requires attention. Carefully remove the ball bearing. Approximately this happens the repair and replacement of the pivot.
Replacement kingpins
There are still details that from time to timeneed replacing - it's kingpins. To replace them, you have to remove the pivoting fist and clamp it in a vice. After that, with the help of the mandrel, it is necessary to knock out the bushings of the pin and clean the passages for grease and the replacement spare part in the fist.
After the mandrel, new bushings are installed so that the holes in them coincide with the holes on the fist, and the open ends look towards the beam fixed on the front axle.
Simultaneously unfold both bushings up toof the required diameter. After that, clean the bushings and apply a thin layer of grease. Then, by lubricating the sealing rings and ducts in the fist bosses, the rings themselves are installed.
Possible damage
Despite the fact that the rotary fist is one of thethe most "long-playing" parts of the car, its damage is just a matter of time. Sometimes a protective cover can crack, giving access to dust and sand inside, so periodically it is necessary to control its integrity.
If it fails, the best way outthere will be a replacement. Often, you can see on the pivoting fist oil flows, indicating that the seal of the stuffing box / semiaxis is loose. Here, you just need to change the oil seal to a better one. Such problems are often found in cars that have an accident.
How to protect against wear
Those car owners who recently bought UAZ,often when rotating the steering wheel hear unpleasant sounds, as if metal rubs against metal completely without lubrication. Often it happens. How can you protect your fists with a domestic car? Here, the ubiquitous lithol comes to the rescue.
If there is no experience in repairing cars, you canThe left swivel fist, like the right one, can only be coated on the outside. For people who are more knowledgeable in automotive mechanics, this method is suitable: after unscrewing the circular packing, move it to the center of the car and add more lithol to the formed gap.
These operations are performed after cleaning the car from transportation paint or polyethylene. Also check the presence of the seal.
Design of the fist
The most common constructiona pivoting fist - this is the so-called "direct cross". Although most of them look almost the same, but there are differences in size. One can be a little more, another - a little less.
A rotary fist is usually made of steel. Thanks to this material, such an important detail can withstand enormous loads. But with all this, the easier the fist part is, the better will be the depreciation and controllability. Therefore, designers try to obtain the optimum weight-to-strength ratio.
Seats on auto parts speciallyThey are intended for fixing mud protection rings, which do not allow to penetrate into the bearing of the hub to all kinds of garbage. The body is designed in such a way that it is convenient to screw the suspension elements.
You may wonder why most of thearticles is dedicated to the UAZ car? The answer is this: because it is a domestic car that has proved itself to be well-established - easy to maintain, reliable on the road.
Many underestimate this machine, believing thatforeign cars are better, but this is far from the case. In many respects, UAZ, even released in the Soviet Union, surpasses many modern SUVs, but, unfortunately, it remains unrecognized.
Though made of steel, a swivel fistis one of the weak points of any car, often because of bad roads. It is worth watching, because at the critical moment it is this part of the steering that can help to avoid an accident.
