Air conditioner compressor clutch: replacement and selection

When and why it is necessary to replace air conditioner compressor clutch

Operational lifetime of this component is not specified. The part should be replaced in case of its elements integrity violation. As a rule, the pulley bearing breaks down most frequently in the electromagnetic clutch of the air-conditioner compressor. Moreover, thermal damage of the coil winding insulation and breakdown of the electromagnet is also possible. The clamping plate is apt for corrosive and thermal damages. In addition it can deform.

Most of all, any mechanical damages of the clutch or its elements are the result of unqualified repair or a road accident. During incorrect installation of the drive belt, its excessive tightening can take place. This leads to friction between the pulley and the coil casing. Heating occurs, which causes negative effect on some elements condition. Particularly, the pulley bearing can destruct, the coil winding insulation can burn-out, melting and deformation of the clamping plate occur quite often.

Failures of air-conditioner operation can indicate breakage of this element. Particularly, flow of hot air comes from it. In many cases, turning on of the air-conditioner is impossible at all. Defectiveness of the compressor clutch is pointed out by increasing humming from under the bonnet at the operating engine. In the course of time humming can increase and turn into roar.

Replacement of this element should be performed at a service station, as the process is quite laborious. In particular, removal of auxiliary equipment, and the front wheel in some cases is necessary. Moreover, after installation it is important to mount the alternator drive belt and other elements, demounted during part mounting.

How to select air conditioner compressor clutch

In order to have no troubles in operation of a new component, give preference to parts of proven firms. For instance, the clutches of AKS Dasis, THERMOTEC, Delphi are notable for high quality.

Selecting the component pay attention to the type of the drive belt and diameter of its pulley. Sizes of the clutch itself depend on it. Take into account that there are open- and close-type components on the sale. The latter are equipped with a metal protective casing.