A/C Question....
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Cargo Master
Joined: Mar 2008
Posts: 2,975
Likes: 19
From: Archdale,N.C.
A/C Question....
Hey guys,'99 F250 in sig.,do we have an orific tube,or do we have an expansion valve,and which ever we have,where is it located?My air seems to cycle off and on and blows out hot air at times,last year I noticed the drier freezing up so I have a drier to put back on,I'm also going to check the air gap,I just wanted to replace the orific tube too while I'm doing a evac and recharge....thanks alot.....Phil
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Cargo Master
Joined: Mar 2008
Posts: 2,975
Likes: 19
From: Archdale,N.C.
Yeppers,that is a sign,but we have two vacations planned(wife and three kids),and since I'm doin a evac and air drier anyway,I thought i would do all I could..(but yes I'm definately gonna check the air gap).
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Cargo Master
Joined: Mar 2008
Posts: 2,975
Likes: 19
From: Archdale,N.C.
Well I've had the truck about three and a half years,like I said the drier was freezing up last summer(bought the drier last summer too) so I figured I would replace it,and I know most orifice tubes don't cost that much anyway,by the way,my FIL owns a big truck garage so an evac and recharge doesn't cost me anything but a little R-134.
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Cargo Master
Joined: Mar 2008
Posts: 2,975
Likes: 19
From: Archdale,N.C.
Hey Marv,where is the orifice tube located?
Senior User
Joined: Aug 2007
Posts: 412
Likes: 0
From: Fresno, CA
The drier freezing up doesn't mean it is bad. I've had new driers ice over before. The orifice tube is either in the line between the condenser and evaporator or right in the evap inlet. You should see the tube change sizes, and have a small crimp where the orifice tube is.
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Lead Driver
Joined: Jun 2003
Posts: 8,298
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From: Damon (South East Texas)
The orifice tube (CCOT) is in the evaporator inlet. You'll see it in there when you break the connection. One of our mechanics just changed one on Superduty a few weeks ago at our shop.
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Cargo Master
Joined: Mar 2008
Posts: 2,975
Likes: 19
From: Archdale,N.C.
Ok,I went out and was watching checking to make sure the clutch on the A/C was releasing/locking up,it's locking up/releasing like it should,but it has an ever so slight wobble(wobble is really to strong a word),but you can see a a slight wobble when compared to the compressor running.I'm sure this is a sign of clutch wear,should I try the air gap/different shim thing,replace the clutch,or replace the entire unit?Cost wise and longevity wise....Thoughts.....
Hotshot
Joined: Jan 2002
Posts: 17,988
Likes: 207
From: La La Land
So, I disagree. If he's getting cold air, I would advise him to not break open the system AT ALL!
But he seems determined to get inside it, so......
Pop
Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 25
From: Damon (South East Texas)
Where would we be if people did? No mods discovered. But, I do have to agree with you, Pop. It does go under that category.
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Cargo Master
Joined: Mar 2008
Posts: 2,975
Likes: 19
From: Archdale,N.C.
UPDATE...
,I ordered a shim pack from Oriellys(part #yf1800amot)I'm still waiting on the kit to come in,it is supposed to have five different thinkness of shims for our A/C,I guess it's application specific,so I'm not sure how the kit will turn out/fit in,when it comes I'll update again.After checking the air gap on my clutch it was.064,we need.020 to .025,while I was waiting for the shims to arrive I thought I would remove the bolt and check,(right Marv...LOL)when I got the clutch off I noticed there was only one shim in there,I removed that shim,reinstalled the clutch and ended up with an air gap of .026.So far it is running/cycling like it should,and the air is very much colder than before.Just wanted to update......