Compressor / Parts for trucks

Air conditioner compressor in a truck ensures compression and circulation of refrigerant. The state of this component largely determines the correct operation of the air conditioning system.

Types of air conditioner compressors for trucks

• Piston. They operate due to the movement of the pistons as a result of the rotation of the washer connected to the shaft.
• Rotary vane. The design includes a rotor and several blades that move along it. The volume of cavities between them is constantly changing, whereby the pressure of the refrigerant reaches a high level.
• Scroll. They are small, lightweight, but relatively expensive items. They are rarely used. Such a device includes two spiral elements. One of them is stationary, the other is rotating. Cavities with constantly decreasing volume are formed from the edges towards the centre. Whereby, the rarefied gas is compressed.

The products available in catalogues differ in performance. It is usually directly proportional to the volume of the truck cabin it is intended for. In most cases, the performance of devices for trucks is higher than that of air conditioner compressors for passenger cars.

Malfunctions and their reasons

Cracks may appear on the housing of the unit, for example, as a result of a road accident. Loss of elasticity of the oil seal may result in leakage of the refrigerant. Insufficient lubrication or ingress of dirt into the system results in jamming.

How to detect faults

The component does not have a specified service life. The air conditioner should be regularly checked at a service station. This allows to detect small defects timely and replace faulty components, avoiding costly repair.

There are some symptoms of a faulty device. For example, it can fail to start when the system is engaged or emit noise during operation. Squeaking sound may also be heard from the drive belt when the unit is started. In this case, inspect the device for a leakage. If it is impossible to check it due to the necessity of dismantling adjacent elements, contact specialists for maintenance.

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