Engine Size: 6.9
Refrigerant Type: 12
Country of Origin: United States
I can't get the quick release fitting off of the consensor-evaporator hose on my 87 f250 6.9 diesel. I have a tool and it fits up into the fitting recess near the evaporator but it will no come off. I've never used this tool before, its the type that looks like an X with various combination hole sizes. I'm trying not to brake the evaporator line by strong arming it.
87 f250 6,9 diesel
I have absolutely no experience doing this on an air conditioning line. But I have done it hundreds of times on fuel lines, and I curse everytime. In theory, the tool should retract the spring, and the line should just fall out. Never happens for me. It is always a struggle. There is a different style tool availabe. OTC, KD, Lisle etc should have it. It is like a donut, with a whoobie in the middle that fits up in the connection. You push and twist it in, I do not ahve any better luck with it than with the plier type. The one time a line broke on me, it was in a miserable place to get at. I ground it out from the inside with a dremel. I think I used the stones that sharpen chain saw blades. It took awhile, used a few stones.
Squirting a little oil in the joint can't hurt.
The bloke who invented this will rot in Hell, right beside the blokes who invented the allen head and the torqx.
I saw that type at a store, it looked flimsier so I got the pliers instead.
87 f250 6,9 diesel
Here's a Ford sheet on springlocks:
When you do get them apart, polish both the inside and the outside, and they have to be polished, with new O'Rings, and Nylog, they actually slide together with great ease.
Besides expanding that spring, you have two very old O'Rings baked in holding the two tubes together, that is also a problem, try spraying some PB Blaster in there and gently twisting the two tubes back and forth, then working some more in. Another thing I have done with a discharged system, course it has to be discharged, is to heat the coupler with a Masters heat gun. While I don't like wearing gloves when working, this is a good time to start, that softens the O'Rings a bit, but still have to rock back and forth to work them loose while putting apart at the same time.
They are a pain and gives a guy an idea why they invented cuss words. I said that before, just want to take it apart, not wreck it.
Thanks nick, I did get it out with some spray degreaser. What should I use to polish the connection? I have some fine sand paper or emery cloth.
Also, I'm getting a yellow color to the flush fluid(denatured alchohol), is that dye or mineral oil? do I have to keep flushing until the yellow is gone? I'm not seeing any dirt.
Also2, There are some threaded brass couplings on the condensor end, besides the o ring and compression fitting, should I be using some red locktite on them?
87 f250 6,9 diesel
No sandpaper or emery cloth. Use nylon string. Wrap a layer in the groves and polish using the same motion as if you were polishing your shoes wit h a shine cloth.
Here's a Ford TSB on cleaning spring locks.
Doug, you must not work on many Ford's... no way nylon string is going to cut it. The pitting and corrosion is often so severe even abrasives have a tough time getting a smooth surface. But abrasives are the only way to go, as Nick pointed out from the TSB. As long as you flush when done, all should be good.
Wow, I must be lucky - I just got done replacing a bunch of lines on my friend's '93 mustang that has a bunch of the springlock connectors. None of them had the corrosion you speak of, and popping the lines off was quite easy with the Mastercool springlock tool. I replaced all the orings and garter springs and was actually quite surprised at how easy it was. That probably means the next Ford I work on will be dreadful, LOL.
I use the string to clean the groves. Haven't run into heavy corosion. Have gotten away from MVAC as much as possible. Doing HVAC. Hands don't fit in vehicles any more any patience has dwindled.
We got rid of our Ford spring lock problems by getting rid of our Fords, well except for the Escort ZX2, it doesn't use spring locks, doesn't leak either. Oil can get trapped between those two tubes and forced out without losing refrigerant, bang, there goes the compressor. Vibration was another problems with jerking those two O-Rings from side to side letting oil leak out, there is or was aftermarket clamps available to stiffen them up.
But once cleaned, new O-rings with Nylog, so easy to snap together, guess that is what Ford had in mind with these things to lower production costs. After that, they are a headache. Major problem was always in the high side line, that is where those O-rings were really baked in, normally the evaporator wasn't too bad.
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