i have a 69 charger with air conditioning. i do not have feon in the system and not for about 20 years. i have noticed lately that the clutches have been turning sometimes. i do not have the electrical wire connected. i have not noticed in the past the clutches turning but maybe they have. they turn more when the engine is cold and not so much when warm. any help appreciated
The only thing that "should" engage those clutches is the electric coil, so if that's disconnected, something is dragging, bearing wearing out, etc.
so you think i should get the compressor rebuild. or can you still get a bearing kit to fix it. thanks for your help
i would use a remote starter button to force the clutch to engage and disengage a bunch of times.. not spinning the compressor more than a few hundred times... this may clean the rust off the face of the pulley face... so its not building up and grabbing the drive face...you might also use an automotive stethoscope and listen to the compressor body with the engine running for rumbling noise where the bearing might be failing.. automotive stethoscopes cost less than 10 bucks in most parts stores..you can also remove the belts that go around the compressor and spin the pulley and see if it spins smoothly.. bearing failure has happened many many times..you might also want to make sure that the electrical connector is not connected or is getting stray voltages from a short to positive or a defective switch in the ac control panel.. warning... read the manual if you decide to remove the clutch disc... some parts stores have a loan a tool set to extract the clutch disc from the shaft without damaging or bending the compressor shaft... there is a NUT down deep in the clutch face to release..there is a snap ring holding the clutch pulley to the pilot stub on the compressor.. and a loan a tool puller that grabs the pulley grooves to extract the pulley and bearing off the pilot...one warning.. if you intend on pressing the old bearing out and a new one back in... you might want to measure the installed depth.. it takes special tooling to support the clutch pulley center to allow you to press the bearing out and back in without bending or distorting the clutch pulley.. look at the picture above where the grooves are.. that has to remain flat..you might be able to get creative and spin the pulley on something and heat it with a propane torch to expand the grip on the OD of the bearing.. its just easier to replace the pulley and clutch.. there may also be shim washers behind the clutch disc to changes the final gap between the disc face and the pulley face... too wide and it won't engage and slip... too close and it will drag...
i had some time to search this evening...this should help in what you are seeing with the compressor...http://www.moparmusclemagazine.com/techarticles/34597_mopar_ac_system_restore_iii/viewall.htmllet us know what you find..
thanks wayne for the advise i'll try your ideas when i get it out of storage thanks again