EdupradaThe gearbox bearing is a very important part of your vehicle’s transmission system. It makes it possible to guarantee the rotational movement transmitted by the motor.
However, the gearbox bearing is a part that can wear out over time. You must replace it quickly or risk affecting the proper functioning of your vehicle.
What is a gearbox bearing?
Gearbox bearings help maintain the rotational movement transmitted by your car’s engine. They are in fact installed at the ends of the transmission shafts primary and secondary. This type of part is made up of different elements:
- A internal cage of circular shape: this is held at the level of the shaft of the box. It is essential to the rotational movement.
- An external cage of circular shape: this cage is integral with the gearbox casing and is therefore fixed.
- rollers or balls: these elements are placed between the internal and external cages and ensure the rotation of the lower cage as well as the #39;tree.
At the level of a gearbox, you can find 4 main bearings which can be distinguished by their thickness .internal and external diameter but also their
What are the different types of gearbox bearings?
Depending on the gearbox model you have, you can find different types of gearbox bearings. But themost common models are as follows:
- The cone-shaped gearbox bearings: the outer and inner races have the shape of a female cone in which inserts a second male cone. Thanks to their position, the lateral forces which apply at the level of the shafts are therefore countered. On this type of gearbox bearing, you can also find one or two row(s) of balls or rollers.
- The straight ball gearbox bearings: this is the classic gearbox bearing model. They consist of a single row or row of balls.
How do you know if a gearbox bearing is out of order?
is not always easy to detect wear on a gearbox bearing. Indeed, in the event of a breakdown, the appearance of noise can alert you. These will be rattling noises, grinding or more whistling.
However, the particularity with this type of failure is that the gearbox continues to operate normally. To detect the failure of your gearbox bearings, we advise you to proceed as follows:
- Start the engine and drive for a few kilometers so that the gearbox can warm up: do not hesitate to run the engine at approximately 4,000 rpm while engaging the clutch. However, do not engage any gear.
- Exert pressure on the clutch pedal and cut it engine simultaneously: if you hear a clicking noise that changes each time the engine shaft speed #39;gearbox input drops, this means your gearbox bearings are damaged.
In fact, the more friction increases, the more the gearbox bearings will heat up, which will prevent you from engaging a gear. The breakdown will be even more noticeable when you try to shift into 5th gear. Act as quickly as possible because in the long term, your gearbox could be completely damaged.
How to change a gearbox bearing?
The gearbox bearing is not always the part in question. Indeed, when you notice a breakdown in your gearbox, we advise you to check all the constituent elements of the latter before deciding to replace the bearings.
If the gearbox bearing is indeed the part in question, you can replace it. However, this is an operation that particularly requires fairly solid skills in automobile mechanics. Moreover, not all professionals master this operation. We therefore advise you to choose your mechanic carefully.
How much does it cost to change a gearbox bearing?
From one model to another, the price of a gearbox bearing may vary. In fact you can count on average between 25 and 200€. Don’t forget to add the cost of labor. Also note that in some cases, you will be forced to replace your entire gearbox. For this, plan a larger budget: between 1,000 and 2,000€ not including the price of the intervention.
Although it’s a not-so-well-known part, the gearbox bearing plays an equally important role. You must take care of its condition. If it is worn, go quickly to a professional to have it replaced before it is too late.