Symptoms of malfunction of the hub node on Skoda Rapid They do not appear instantly, but grow gradually, which often misleads the owner. At first, you may hear a barely noticeable hum that appears only when driving at high speed and disappears when you turn the steering wheel. As the wear wears, the internal clip of the bearing begins to break down, causing the steering wheel to vibrate and the characteristic metal grinding that is heard even when idling when the wheel is rotating.
Ignoring the problem with wheel bearing This can lead to critical consequences, including jamming the wheel while driving on the track. In the case of the front-wheel drive platform Skoda RapidIt is also fraught with damage to the ball support, shock absorber and even destruction of the hub, which greatly increases the cost of repair. Therefore, at the first signs of a hum, it is necessary to conduct a professional diagnosis and, if necessary, replace the node.
Diagnosis of faults and signs of wear
Understand that the problem lies in the hubInstead of using tires or brakes, you can do a series of simple tests. The main method is to change the trajectory of movement: if the noise increases when turning to the right, then the left bearing is defective, and vice versa. This is due to the fact that when you turn the weight of the car is redistributed, and the load on the opposite side increases, causing the damaged unit to βhowlβ.
The second important feature is the back wheel. Lift the car on a lift or jack, spin the wheel and swing it with your hands behind the top and bottom points. If you feel a palpable slug or hear a knock, then wheel bearing It is critically depreciated and requires immediate replacement. Note that on the back wheels Skoda Rapid The backlash may be less noticeable due to the design of the drum brakes.
- π A characteristic hum, changing depending on the speed and rotation of the steering wheel.
- π§ Tangible backlash of the wheel when swaying your hands for 12 and 6 hours.
- π‘οΈ Increased hub temperature after the trip compared to the other side.
- π Vibration transmitted to the cabin floor or steering wheel when driving.
Selection of quality components for repairs
Savings on wheel bearings This is a false path that often leads to re-repair after a couple of thousand kilometers. For Skoda Rapid Manufacturers recommend using original parts or high-quality counterparts from proven brands such as SKF, FAG, Timken or Koyo. Cheap Chinese products often do not withstand the stated loads and quickly fail due to poor steel quality and insufficient lubrication.
It is important to note that the front and rear hubs have different designs. The front assembly is usually a finished module that includes a hub, bearing and ABS sensor. The rear bearing in some trim levels can be detachable, although on most versions Rapid A single module is also used. Before buying, be sure to check the VIN code of the car with the catalog number of the spare part.
- π οΈ The original number of the VW is 5Q0407625 (front left), 5Q0407626 (front right).
- β Analogues: SKF VKBA 7358, FAG 713670800, SNR R17072.
- βοΈ Completeness: be sure to check for the ABS sensor in the kit.
- Original (VW/Skoda)
- SKF
- FAG
- Timken
- Budget analogues
Necessary tools and workplace preparation
To do the work, you will need a standard set of tools, but with an emphasis on a specific tool for removing the hub. No hubman or a powerful hydraulic press to dismantle the jammed assembly is almost impossible. You will also need a dynamometer key to tighten the bolts with the right force, since a violation of torque can lead to the destruction of the thread or weakening of the mount.
Prepare the place of work: a flat surface, preferably an observation pit or a lift. You will need a jack and reliable safety stands, as it is dangerous to work under the car on one jack. Do not forget about personal protective equipment and solution for removing rust, as the bolts of the caliper and hub attachment on the hub Skoda Rapid They are often attached to the details of the suspension.
- π¨ Set of heads and rattles (basic dimensions: 13, 15, 17, 21, 30 mm).
- π§ Wheel bearing puller or hydraulic press.
- π© Dynamometer key and key for wheel bolts.
- 𧴠WD-40 or similar penetrating composition for unscrewing boiling bolts.
βοΈ Preparing to replace a bearing
Step-by-step instructions for replacing the front bearing
The replacement process begins with the dismantling of the wheel and the removal of the caliper. Unscrew the two bolts of the mounting of the guide calipers (usually a size of 13 or 15 mm) and hang it on the wire so as not to damage the brake hose. Next, remove the brake disc, which can be held on the screw or just on the landing place. Now you get access to the hub and brake disc.
The next stage is the unwinding of the mounting bolts hubs To the turning fist. These are the most complex bolts, often requiring the use of a powerful extension cord and considerable effort. After unscrewing the bolts, the hub must be knocked out or squeezed out of the landing place. If the bearing is integrated into the hub, the entire node changes. If the bearing is pressed separately, a removable will be needed to squeeze out the old part and press the new one.
How to knock a hub without a filmmaker?
If there is no professional filmmaker, you can use a powerful mount and hammer, but you need to act extremely carefully so as not to damage the thread of the swivel fist. Strikes on the inner clip of the hub, putting a wooden pad so as not to deform the metal.
After removing the old part, clean the seat of dirt and rust. The new bearing shall be installed by means of a press or mandrel, the pressure being applied strictly to the outer clip. If you change the module assembly, just insert it into a swivel fist and tighten the mounting bolts. Donβt forget to connect the ABS sensor connector, otherwise an error will light up on the dashboard.
Before installing a new bearing, lubricate the seat with a thin layer of litol or specialized lubricant to facilitate installation and prevent corrosion.
Features of replacing the rear wheel bearing
Rear suspension Skoda Rapid It has its own characteristics, especially if you have a set of drum brakes. In this case, it is necessary to remove the brake drum, which sometimes requires the use of a special remover, since the drum can be strongly attached to the hub. If you have disc brakes at the back, the process is similar to the front, but the design of the swivel fist is different.
Replacement of the rear bearing often requires removing the shock absorber or unscrewing the bottom of the rack to free the hub. This makes the work more time-consuming compared to the front axle.
- π© Unscrew the bolt of the lower lever attachment to the hub.
- π Remove the brake drum or caliper, depending on the configuration.
- π¨ Knock out the old hub or bearing with a suitable mandrel.
The rear bearing changes less frequently than the front one, but requires more careful work with the brake mechanisms so as not to damage the working cylinders.
Technical specifications and tolerances for tightening
Compliance with the technical parameters of the tightening is a critical stage of repair. Incorrectly tightened bolts can cause the hub to fall off or, conversely, the bearing will overheat and jam. Use the dynamometer key and check the table below for exact values.
| Detail | Puffing place. | Torque (Nm) | Additional action |
|---|---|---|---|
| Hub bolt (front) | To the turning fist | 100 + 90Β° | Tighten in two stages |
| Hub nut (back) | Central nut | 200 + 90Β° | Replace with a new (one-time) |
| Bolt calipers | Guides | 30 | Check the condition of the anthers |
| Wheel bolts | To the disc. | 120 | Tighten crosswise |
Pay special attention to the central nut of the hub, which is often disposable. After unscrewing, it must be replaced with a new one, since it has special notches to prevent self-unwinding. Never try to reuse the old hub nut, as this can lead to catastrophic consequences on the road.
What to do if the hub bolt does not come off?
If the bolt is stuck, use heating (burner) to expand the metal around the thread, but be careful with brake tubes and rubber parts. You can also use a shock screwdriver or pneumo-hit.
Work check and test movement
After assembling all the nodes, it is necessary to check the quality of work. Swing the wheel with your hands to make sure there is no backlash. The rotation of the wheel should be smooth, without jamming and extraneous sounds. If you hear a crunch or feel resistance, it means that the bearing is installed incorrectly or defective.
Before starting the movement, be sure to check the brake system. Press the brake pedal several times to wipe the pads. Conduct a test trip at low speed, listening to the suspension. If the hum is absent and the steering wheel does not vibrate, you can proceed to normal operation.
- π Make sure that the ABS lamp does not burn on the dashboard.
- π Listen to the work of the suspension on irregularities and turns.
- π‘οΈ After 10-15 minutes of the trip, check the temperature of the hubs with your hand (carefully, do not burn yourself).
For the first 500 km after the bearing replacement, avoid aggressive driving and sharp braking, so that the knot finally "wears".
Frequently asked questions from Skoda Rapid owners
Is it possible to replace only the bearing and not the hub assembly?
On modern models Skoda Rapid Most often, the hub is changed in the assembly with the bearing, as it is more reliable and faster. Collapsible structures are rare and require a special press to replace.
How long does it take to replace one bearing?
With professional tools and experience, replacing one front bearing takes about 1-1.5 hours. The rear bearing may require more time due to the difficulty of accessing the mount.
Do I need to go down after replacing the bearing?
If you have not dismantled the levers and changed the Bushings, a fall-up is not necessary. However, if the position of the levers or fist has been violated, it is recommended to check the angles of the wheel installation.
Why does a new bearing warm up immediately after installation?
This may mean that the nut of the hub is pulled, or the bearing has a manufacturing defect. It is also possible that the dirt got inside or the lubricant was applied unevenly.
Can I drive with a faulty bearing?
It's not recommended. This is life-threatening as the wheel can jam or fall off. This also leads to the destruction of other elements of the suspension.