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Istallation of new AC compressor clutch
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raxx
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Jul 30, 2013, 4:50 PM
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Istallation of new AC compressor clutch
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My truck would no longer start up due to a destroyed AC compressor clutch. The clutch came out in pieces, and was pretty rusted and beat up. I used a puller to pull the field coil out, but I believe part of the destroyed bearing is still attached to the compressor shaft. It is held in place with a beveled edge on the shaft, so I can not pull it off with my hands. How can I remove this piece?
I am doing the clutch repair with the compressor still in the car to avoid having to flush and recharge.
I'm working on a 2000 Ford explorer sport v6
(This post was edited by raxx on Jul 30, 2013, 4:52 PM)
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Tom Greenleaf
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Jul 30, 2013, 5:10 PM
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Re: Istallation of new AC compressor clutch
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If that was so fricked up engine wouldn't crank it was probably the compressor. You can start the thing without the belt on for a short time with a frozen part like that which is not cheap as you already seem to know.
I say that needs the real job now not some attempt at fixing that clutch.
You might be able to get a belt to fit and just ignore it to use it if needed, so you can, some you can't just with a belt for the thing if it had no A/C. Not sure which ones you can or can't do that if needed.
Failing twice at the job is not saving anything - trust me,
T
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raxx
Novice
Jul 30, 2013, 5:16 PM
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Re: Istallation of new AC compressor clutch
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Thanks for the reply.
I understand the best option is to replace the compressor and system, but at this point I'm only interested in selling the car. I can't afford an $800 shop fee to replace the AC system, though the car will be much harder to sell if it doesn't start up.
Are you suggesting installing a bypass pulley?
I already have a new clutch assembly purchased, and if it's at all possible, I'd prefer to install that.
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Hammer Time
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Jul 30, 2013, 5:29 PM
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Re: Istallation of new AC compressor clutch
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Do you also understand that the clutch will cost half the price of a new compressor and that bearing has gotten so hot tat it has likely ruined the front seat of that compressor and possibly more and when you get it all together to find that out and have to buy a compressor at that point, you will be buying that clutch all over again along with a compressor.
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Tom Greenleaf
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Jul 30, 2013, 5:30 PM
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Re: Istallation of new AC compressor clutch
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If you just want to sell it cut your losses, find a bypass pulley or used compressor just to sit there as a dummy and unplug it. You do know you probably can't flush out the condenser so this would end up lot's more than $800 to fix properly that you won't recover to just sell it or worse it fails again on you.
When a bearing goes that bad you probably don't have a charge left in it but it legally needs to be recovered if you just want it to run now whatever approach works for you,
T
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Discretesignals
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Jul 30, 2013, 5:35 PM
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Re: Istallation of new AC compressor clutch
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You could also grab a dremel with cutoff wheel and cut the race off. You don't have to cut all the way down into the race, just enough where you can smack the cut with a chisel and crack the race, so it slides off.
Clean up the surface with some emery cloth and blow out the chips. Install your new clutch assembly and off you go. If the shaft in the middle still turns, you might be out of the woods.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Jul 30, 2013, 5:37 PM)
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Hammer Time
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Jul 30, 2013, 5:37 PM
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Re: Istallation of new AC compressor clutch
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That aluminum compressor will likely break off long before that steel bearing.
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Discretesignals
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Jul 30, 2013, 5:40 PM
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Re: Istallation of new AC compressor clutch
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Worth a try. What do you have to lose? If you make your cut as deep as you can before the cutt off wheel contacts the hub, the bearing should crack pretty easy. Once it cracks it should slide off.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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Hammer Time
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Jul 30, 2013, 5:42 PM
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Re: Istallation of new AC compressor clutch
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Or it just breaks the whole nose cone off the compressor and even if it cones off, the compressor is likely already bad anyway.
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Discretesignals
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Jul 30, 2013, 5:47 PM
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I'd try it....just to see what happens. I'm sure if you take your time and don't beat the crap out of it, the race will come off without knocking the bearing mount off. The bearing mount stayed together and was able to lock the engine up, so it probably has some strength.
Make your cut diagonal so you get more of the race where it is close to the body of the compressor.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Jul 30, 2013, 5:50 PM)
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Hammer Time
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Jul 30, 2013, 5:51 PM
Post #11 of 22
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But the compressor is likely already junk and needs to be replaced as a unit. He's already past saving that compressor.
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Discretesignals
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Jul 30, 2013, 6:01 PM
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Re: Istallation of new AC compressor clutch
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Maybe, maybe not. Just depends if the compressor isn't lockup inside. Looks like the hub bearing locked up on it. Even if the compressor is trashed inside, you won't have to install a bypass pulley (if they make one for that).
I've taken a dremel on hubs and axle races and cut them enough were they crack open themselves without having to tap on them. I had one that cracked open and it was heard across the shop. I thought that was pretty cool.
Wear safety goggles. That race is very sharp and can cut you like glass.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Jul 30, 2013, 6:03 PM)
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raxx
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Jul 30, 2013, 6:01 PM
Post #13 of 22
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Re: Istallation of new AC compressor clutch
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I don't have access to a grinder at the moment. That may be more work than what its worth, considering the compressor is almost shot, if not shot already.
I assumed that bearing piece was supposed to slide off, and I was overlooking something.
The AC was blowing cold right up to the point that the clutch started grinding loudly, and gave out. When I was taking it apart, it looked like the bearing had failed. As I said, it all came out in pieces.
Is there a puller I could use on the bearing piece, or is grinding my only option?
I don't have much to loose at this point, and the new clutch has already been purchased.
The AC will likely only survive the rest of the summer, but I'd let the buyer know that.
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Hammer Time
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Jul 30, 2013, 6:04 PM
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The heat from the bearing likely melted the front seal making the compressor a leaker from here on.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Discretesignals
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Jul 30, 2013, 6:07 PM
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Re: Istallation of new AC compressor clutch
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You can't use a puller because you can't get the arms behind the race and the body of the compressor. Plus you don't want to be using the center as a push point.
If you find a dremel with a small cut offs it will cut a slot in the race. If you crack the race, it will slide off.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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raxx
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Jul 30, 2013, 6:12 PM
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Re: Istallation of new AC compressor clutch
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Gotcha. Well thanks for the advice. Let me call a friend and see if I can get a hold of a dremel.
I'll let you know how it goes.
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Hammer Time
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Jul 30, 2013, 6:13 PM
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My advice hasn't changed. I think you are throwing good money out the window by putting a clutch on that compressor.
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Discretesignals
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Jul 30, 2013, 6:18 PM
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Re: Istallation of new AC compressor clutch
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Please let us know the outcome. Maybe HT and I can make a Fantasy Compressor Clutch bet...LOL
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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raxx
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Aug 2, 2013, 4:23 PM
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Re: Istallation of new AC compressor clutch
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The race didn't take long to saw off.
It didn't pop off once I sawed through the one side, so I went ahead and completely cut it in two.
I dipped into the shaft a bit when I was cutting, but it was difficult to be precise with the compressor so deep in the car.
I'm ready to install the new clutch at this point.
Is there any advice on how to press the field coil on?
I believe I can rent a tool to press the pulley on, once I reach that point.
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Tom Greenleaf
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Aug 3, 2013, 5:28 AM
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Re: Istallation of new AC compressor clutch
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Could be wrong but I think the clutch coil is just screws, bolts or whatever - the clutch to shaft will need a tool, set gap and a small chance it will work and not leak like crazy.
This much trouble is why (too late for right now) I wouldn't go that far with a compressor that bad. Dinged shaft would mean no core value now but I don't suggest going reman anyway. The reason is you just don't know if some place remaned one like the one you have which would probably fail with the best attempts now.
At least you should be able to drive it again soon whether A/C will work is unknown to me anyway so far,
T
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Discretesignals
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Aug 3, 2013, 7:36 AM
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Re: Istallation of new AC compressor clutch
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Field magnet is pressed on and normally you would need the compressor off to replace it. You might be able to use a hammer and something to go over the coil and tap it on. You don't want to put the hammer through the radiator though.
edit:
ya, don't hammer on the outside of it. You want to hit on the inside ring portion.
The hub bearing slides over the hub mount and the c clip holds it on. The hub bearing isn't pressed on like the field. Test fit the hub onto the mount before you tap the field coil on. You might need to clean up the hub mount some more to get the hub to slide on.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Aug 3, 2013, 7:53 AM)
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Hammer Time
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Aug 3, 2013, 7:44 AM
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Re: Istallation of new AC compressor clutch
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And you don't want to bend the base either. It also has an alignment notch that has to be right the first time.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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