Cotal Box: Operation, Maintenance and Repairs
The Cotal box
Codal box In this article, we will discuss the different aspects associated with theCotal box, such as its operating principle, the essential steps in maintenance, possibleproblems, as well as methods for carrying out repairs.In addition, we will give you some tips for buying and installing a Cotal box. The operating principle of the Cotal boxIn a car equipped with a Cotal box, gear changes are done automatically thanks to an
electromagnetic control. There are four electromagnets and two inductors that allow the variation of the torque transferred between the input shaft and the output shaft. Thus, when you press the accelerator, the gears are chained together without having to release the pedal. This absence of a clutch makes its use much more comfortable and pleasant for the driver. Maintaining a Cotal gearbox Checking fluid levels
Draining the gearbox is the main preventive measure that owners of vehicles equipped with a Cotal gearbox should carry out. It is recommended to
drain and refill the fluid every 40,000 kilometers or two years, depending on the use of the vehicle.Lubrication of mechanical elements
To ensure the proper functioning of the internal components of the Cotal gearbox, it is important to ensure that they are properly lubricated. These elements include the electromagnets, inductors and gears. It is therefore essential to check and replace if necessary the oil used to lubricate these parts in order to guarantee a
optimum performance.
Possible problems and common repairsLike any car mechanic, the Cotal gearbox can face various problems related to the wear of components over time. We will present some of the main problems as well as advice on how to carry out the necessary repairs: Magnet malfunctions:
A fairly common problem concerns the electromagnets that can lose intensity after a certain period of use. To solve this problem, it will be necessary to visually examine the electromagnets and test their magnetic power using a suitable instrument. It may be necessary to replace these magnets.
Excessive friction of the gears: The gears of the Cotal gearbox can wear out over time, and if their wear exceeds the tolerable limits, this can lead to excessive friction. In this case, it is recommended to call a specialized mechanic to check the condition of the system and carry out the necessary repairs.
Where to buy a Cotal gearbox and how to install it?
To get a Cotal gearbox, you can contact
- specialized auto parts dealers or search for offers on the internet. Before purchasing such equipment, it is essential to know the model and year of manufacture of your car in order to avoid compatibility errors between the gearbox and the vehicle.
- Regarding the installation of the Cotal gearbox, we strongly advise you to call on professionals, especially because of the complexity of this task and the importance that the proper functioning of the gearbox represents for road safety. At each revision, the ball bearings and the oil pump will be replaced. Planetary gears with too much play receive new larger keys and new ball bearings. And the roughness of the magnets is improved. A magnet that is defective can be rewound so that the Cotal gearbox works as it should.
COTAL gearboxes exist in different designs which are indicated by the MK code followed by a number indicating the weight kg per torque meter.
The most common are: MK12 MK15 MK20 MK25 MK30 MK33 MK35 MK38 COTAL gearboxes are in: Delahaye Delage Hotchkiss Salmson Bugatti Ford Comete Peugeot Citroen
