In a scroll compressor, a scroll shaped “paddle” rotates inside a channel. By the offset of the paddle drive pin, the compressor drive shaft rotates the paddle in an orbiting or circular motion.
Rotary vane compressors contain a solid rotating cylinder called an impeller. The impeller is equipped with vanes that move in and out of slots in the impeller.
There are two types of piston compressors currently in use, the opposed axial type, (also often referred to as the swash plate type), and the single row axial or wobble-plate type. Depending on design, these compressors may contain five, six, seven, or ten pistons.
With either type of piston compressor, the pumping action of the pistons draws low
For reasons we just can’t figure out the number one internet search for mobile A/C components and the number one blog post consistently read is about the function of the system’s receiver drier.
Soon temperatures will tumble, sweaters and jackets will come out and in order to be comfortable you’ll choose to turn on the heat inside your car. How does heated air get into your car?
Before draining the coolant, warm up the vehicle until the thermostat opens. Shut the engine off and place a pan under the radiator drain (the petcock) to catch the old coolant. Turning the petcock to loosen it will allow coolant to drain from the radiator. Once the coolant stops flowing, the pressure from the system has been released and you can remove the radiator cap to allow the coolant to drain completely.
Pressure testing is used to check for leaks in the cooling system and to test the radiator cap.
According to MACS member Spectra Premium Industries, a North American manufacturer of many aftermarket A/C and engine cooling system parts, testing for electrolysis is a simple task. Use a digital volt ohms meter (DVOM). Set your meter to DC volts. With the engine off, hook the negative lead from the meter to the negative post of the battery.
A vehicle has many electrical circuits. For an electrical component to function properly, the electricity must return to the source through the ground side of the circuit. Ground paths are usually metal conductors such as wires or the vehicle frame, engine or body.
Coolant of good quality will be brightly colored. As coolant becomes old, it usually turns into a brownish, rust colored liquid. At this point the coolant is past its useful life and must be changed.
