I had to do a emergency repair on my stang last night. A/C compressor pump pulley froze up and snapped my belt. I caught it instantly so my car didnt overheat and I think I avoided any engine damage. But anyway. I pulled a pump off of a 89 GT and it seems to fit perfectly. But when it came time to connect the metal fittings (pipes) they would not go into the holes. I guess the 89 pipes are diff from the 92. Well anyway. My question is: Can I remove the cap pieces where the hoses connect to from my old one (from the 92) and put those on the new one (from the 89)?. It looks like those pieces come off with a allen wrench. Or can I take the pulley assembly off the new one and replace the one on the old one with it? The pump fit on nicely everywhere except those 2 main hoses (pipes). Any advice, insight appreciated.
Emergency A/C pump (compressor) replacement question
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thanks man
Which plan you think would work? Removing the pulley from the new one (89) and placing it on my old AC pump? Or the swapping of the cap pieces that have the metal fittings that tube/pipe connects to?
Also what are my refrigerant options and what do you suggest? I am in Cali if that matters.
Which plan you think would work? Removing the pulley from the new one (89) and placing it on my old AC pump? Or the swapping of the cap pieces that have the metal fittings that tube/pipe connects to?
Also what are my refrigerant options and what do you suggest? I am in Cali if that matters.
fiveohGT said:
Nope on the top of the pump itself there are 2 threaded fittings. One small one big. They both link to 2 pipes/tubes that have pressure release valves on them. When I swapped the ac pump. The threaded fitting are a little smaller than the original pump. So now the tubes/pipes dont slide in. The thread fittings on the top of the pump seem to be held in place with allen wrenches. I was wondering if I can swap those. So I can have my threaded fittins from the original ac pump.
srothfuss
Last night I stabbed the same guy 7 times in a row
It wasn't confusing...
I would try the pully method first. That way you don't have to open up your A/C system.
If that doesn't work, they you can try the caps.
The only refridgerent you can buy now a days is R-134.
I would try the pully method first. That way you don't have to open up your A/C system.
If that doesn't work, they you can try the caps.
The only refridgerent you can buy now a days is R-134.
R12 is still available, but it's extremely expensive, and requires EPA certification to purchase. I'd definitely recommend getting a conversion to R134a, so you can do the work yourself, and not spend a ton to recharge your AC. Click the link in jrichker's sig for an excellent write-up on how to do it correctly.
kool thanks for the lik tip and advice. One last question. The pulling on my old one is totally shot, so much in fact I think that pump is gone too, but anyway. I guess it was grinding some bearings in there or something and has totally coated my engine compartment with fine metal shavings. You think that metal dust effected anything else? Am I safe to pressure wash that stuff off my engine and compartment?
PuterAmI
Member
It sounds to me as if you have already opened the A/C system. How else would you know that the suction line and the hi-side line would not go into the compressor manifolds?
It is now easiest to replace the compressor as a whole unit at the manifolds as jrichker said.
For another link on converting, see below URL.
http://www.knology.net/~puter/carpics/r134a.html
It is now easiest to replace the compressor as a whole unit at the manifolds as jrichker said.
For another link on converting, see below URL.
http://www.knology.net/~puter/carpics/r134a.html
PuterAmI
Member
Simple.
Use the compressor with the good pulley.
Put the manifolds on that compressor that your lines like.
Use the compressor with the good pulley.
Put the manifolds on that compressor that your lines like.
wasnt sure about that either and chiltons does not have a chapter on this part.
PuterAmI
Member
When you take the manifolds off, you will find o-rings underneath creating a seal. You lubricate the new o-rings (you can get them from any auto parts place) exactly as you would the o-ring on an oil filter.
rd
Founding Member
You can do several things.
I am guessing that when you say the pulley froze, you mean the ac was on, and the compressor seized. You should be able to turn the ac off and the pulley will still spin on its bearing on the shaft.
If the bearing that the pulley rides on died, it should still spin the compressor, even with the ac off. Not good. In this case you should be able to just change the clutch asssembly.
If the ac was on, and siezed, you do have to change the compressor. Might as well change the clutch while you are at it.
If the hoses do not mate to the fittings, I think on a Mustang, as someone else suggested, you can just change the acutal suction and discharge fittings to the ones from your old compressor, that fit the hoses. You will need new gaskets for them.
Note that the clutch has a couple parts, a coil that is mounted to the front of the compressor, the drive assembly, that is mounted to the compressor shaft, and the pulley that spins on a bearing on the front of the shaft, and is turned by the belt, anytime the engine is running. The pulley only turns the compressor when the clutch is on, which pulls the movable clutch face against the drive plate on the shaft. You can just replace the clutch and its bearing if that is what is needed. You may know this, but just trying to explain if it the first time you have worked on it. You need a special small puller tool to get the clutch pulley off the shaft.
Post some more info if you need more details.
I am guessing that when you say the pulley froze, you mean the ac was on, and the compressor seized. You should be able to turn the ac off and the pulley will still spin on its bearing on the shaft.
If the bearing that the pulley rides on died, it should still spin the compressor, even with the ac off. Not good. In this case you should be able to just change the clutch asssembly.
If the ac was on, and siezed, you do have to change the compressor. Might as well change the clutch while you are at it.
If the hoses do not mate to the fittings, I think on a Mustang, as someone else suggested, you can just change the acutal suction and discharge fittings to the ones from your old compressor, that fit the hoses. You will need new gaskets for them.
Note that the clutch has a couple parts, a coil that is mounted to the front of the compressor, the drive assembly, that is mounted to the compressor shaft, and the pulley that spins on a bearing on the front of the shaft, and is turned by the belt, anytime the engine is running. The pulley only turns the compressor when the clutch is on, which pulls the movable clutch face against the drive plate on the shaft. You can just replace the clutch and its bearing if that is what is needed. You may know this, but just trying to explain if it the first time you have worked on it. You need a special small puller tool to get the clutch pulley off the shaft.
Post some more info if you need more details.
thanks RD (and others)
Actually the AC was not on when the pump seized. The whole time I could hear a slight grinding (when AC not on). Then on this faithful day it got real loud, then the squeal of the belt and then the belt snapped. I couldnt turn no part of the AC pump, even with pliers or wrench. ANd my engine compartment was coated with metal shavings (real fine like dust red dust). Also when I removed the pump there was not any pressure in those release valves. Could that have been a problem??
Actually the AC was not on when the pump seized. The whole time I could hear a slight grinding (when AC not on). Then on this faithful day it got real loud, then the squeal of the belt and then the belt snapped. I couldnt turn no part of the AC pump, even with pliers or wrench. ANd my engine compartment was coated with metal shavings (real fine like dust red dust). Also when I removed the pump there was not any pressure in those release valves. Could that have been a problem??
