When you notice unusual noises on your smart fortwo you usually tend to be troubled. Especially when you feel a noise coming from the release bearing of your smart fortwo. It is immediately assimilated to an engine trouble and can therefore be serious. As we know that you do not take these concerns lightly, we have chosen to write this content to support you find the triggers and free yourself from this concern as quickly as possible. To do this, we will first focus on the purpose and operation of the release bearing of your clutch, and in a second step we will look in detail at the different release bearing noises on smart fortwo and their origins.
What is the purpose and operation of the release bearing on smart fortwo?
Task of the release bearing on smart fortwo
The release bearing of your smart fortwo has a crucial purpose in the operation of your entire gearbox system. In fact, its mission is to liberate the gearbox from the rotation of the engine block via its action. This will allow you to shift gears. It is controlled by the clutch pedal and then by the release fork, which, when it is activated, will press on the clutch and release the gearbox from engine rotation for you allow you to shift gears on your smart fortwo.
Action of release bearing smart fortwo
Let’s now look at the technical side, the release bearing is composed of two units, a first fixed part that slides only when the stop is pulled, or pushed (depending on its type) and finally a rotating part that is composed of a bearing that will allow it to stay in contact with the mechanism and follow its rotation.
There are two distinct variants of release bearing smart fortwo :
- Pulled release bearing
- Hydraulic release bearing
It is the most unconventional of the two variants of release bearing . This one, unlike the hydraulic style, is operated by a mechanical pulling system that will release the clutch disc. In this situation, the release bearing must be mechanically fixed to the mechanism.
The hydraulic release bearing, although more complicated, is the kind most used in modern automobiles. It is however more elaborate than the pulled release bearing. In fact, it will be composed of a hydraulic tube that will receive the pressure right from the clutch pedal.
More conventional clutch stop
Release bearing noises smart fortwo and their origins
I feel a release bearing noise on smart fortwo when I drive and it stops when I release my clutch pedal
If you feel a noise from your gearbox, release bearing or clutch itself when your engine is running, but it ceases when you press your clutch pedal, this noise often sounds like a bell noise, it is highly conceivable that your release bearing is the cause. Make sure that this noise stops when you disengage, in which circumstance it is time to swap the release bearing of your smart fortwo.
I feel a release bearing noise when my pedal is up and I feel jolts in my foot
If you feel too much or too little resistance when you press your clutch pedal, and it is linked with jolts that you can feel in your clutch pedal, then the stop/fork release/blades grouping is deteriorated. In fact, this noise often comes from the broken fork that no longer allows the device to operate normally.
I feel a grinding noise coming from the release bearing of my smart fortwo when I try to shift gears and they do not shift
This concern shows up most often on models equipped with hydraulic release bearing. It is often linked to a clutch pedal that has little or no resistance. If you are in this circumstance and you feel a grinding or cracking noise coming from the release bearing of your smart fortwo, then you probably have a leak coming from your release bearing. It must therefore be swapped fairly quickly or risk damaging your gearbox in addition to the clutch. If you have a noise coming from the gearbox of your smart fortwo and it’s not from your release bearing, check this article to have more informations.
