Check the front side of the clutch to examine its condition. The gap between the clutch disc and the ac pulley must be a set distance.
Open the hood of your car and locate your ac compressor clutch.
How to check ac compressor clutch. How do ac compressor clutch work? Check the leads to the compressor, the magnetic clutch and operation. This wire plugs into the clutch relay.
Ac compressor maintenance the ac compressor doesn’t fail so often, but you shouldn’t ignore its maintenance to prevent it from a possible failure. Remove the plug from the clutch coil and activate the a/c system by placing the selector on cold. If the battery voltage is present at the plug, test the coil for resistance.
The center part on the pulley of the a/c compressor will not spin when you have the air conditioner off or if there is a problem. When the air conditioner is turned on, the clutch engages with the ac compressor and starts to supply the conditioned air. However, some ac clutches are not adjustable, requiring a complete ac clutch.
If you want to diagnose an ac compressor clutch for defects, apply these techniques: An easy way to check the clutch of your ac compressor is to gently and lightly tap on the clutch when the compressor is running and the motor is on. The clutch wire felt broken along its length.
Using the 20 volt setting on the dvom, check for battery voltage at the harness connector. Also, when the air conditioner is turned off, then the clutch disengages from the compressor and stops the airflow. Perform an a/c clutch coil resistance test with an ohmmeter.
Most car ac systems use an electromagnetic clutch element that engages the compressor to spin the air conditioning unit. The compressor clutch will usually be located under your hood on the left side near the front of your car. To check ac compressor clutch air gap, simply insert a feeler gauge between the clutch plate and pulley with the engine off.
The compressor drive hub is usually found at the front of the pulley and is attached directly to the compressor driveshaft. If the air gap is too wide, you may be able to correct it by using a different spacing washer. Trace the wire that runs off the ac compressor;
It is controlled by a clutch system wherein its shaft is connected and disconnected to the rotating shaft of the flywheel by an electromagnetic switch. An ac clutch engages and disengages the compressor when your car's air conditioning is turned on and off. How to check oil in ac compressor 1.
The relay is mounted on the firewall. Also, find out whether the clutch and the pulley are spinning. Once an electrical current from the on/off switch sends power to the magnetic coil, it causes the outboard clutch to pull in toward the compressor, locking up the pulley and engaging the compressor.
I was playing with the headlights switch and i started to feel nice cold air then i stop to visually check and sure enough the compressor was working. The price to put a new ac compressor clutch into your car might seem steep, and it might make you reconsider your decision to replace it. The compressor clutch consists of a friction plate positioned adjacent to an electromagnetic coil.
As above, check the pressures in the system, and then see if the compressor clutch gets +12v when you engage the switch in the dash. The ac compressor clutch will cost more than $400, while the labor associated with ac compressor clutch replacement will run you right around $200. In most cases, the relay is mounted on the fender well or fire wall.
Most of the time the clutch not engaging is a result of the refrigerant charge having leaked out of the system to the point where the low pressure switch prevents the compressor from engaging. When i got home i was checking things under the hood and the refrigerant pressure was fine (pressure according to chart observed in gauges). The ac compressor starts to work right after the vehicle is started.
Check the ac compressor clutch air gap. The clutch plate is the black circular piece. In such a case, the pressures inside build to a dangerously high level.
Sometimes, when the clutch is worn, the disc is too thin and may not engage properly. If the gap is too large, the clutch coil can’t pull in the clutch disc. It will look like a cylindrical metal piece with tubes and wires running from it.
This, in turn, may lead to critical damage to the ac compressor. Sadly at over 400 mega ohms the clutch coil has failed. Think of it as a switch that is responsible for engaging and disengaging the ac compressor pulley from its compressor drive.
Once you turn on the ac the center part of the compressor, the ac clutch should engage and start to rotate with the pulley. An electromagnetic clutch provides the mechanical link between the pulley and the compressor input shaft whenever air conditioning is demanded. Compare the reading to factory specifications.
Touch the other wire to the positive side. To run this clutch compressor, the engine is connected directly to the pump rotor of the compressor using a belt. If the clutch fails, you will start to hear a squealing noise.
The ac clutch failure can cause another problem with entire systems of your car. Check the ac control on the dash. If the gap is too small, the clutch disc may make noise when the ac is off.
There are times when the clutch of the ac compressor doesn’t disengage. Turn the honda engine on. Today when i was coming back home from work the ac worked.
An ac clutch compressor is a type of compressor that derives its power from the car engine’s flywheel. Release the clutch by removing the positive wire. Connect one of the wires, it doesn't matter which one, to the negative side of the battery.
Now look at the pulley of the air conditioner compressor. The ac compressor clutch is the first thing that moves every time you turn on your ac. If the magnet is good, the compressor clutch will click into place when the magnet powers up.
I made sure to check the other lead from the coil that is tied to the body of the compressor, that was in good condition mechanically. The center part (the clutch) should be engaged and should be spining along with the pulley. I cut past the break and exposed the wire to do a repeat test.
Locate the ac clutch relay. Set all air conditioning controls to the max before kicking off the engine. Turn the ac settings to off. open the hood of the honda vehicle.
To do so, grab a lead from the batter to determine whether the clutch engages. Typically a clutch coil should be between the range of 2 to 5 ohms, and any reading below 2 ohms or over 5 ohms indicates a bad coil.