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  #1  
Old 11-26-2010, 06:07 PM
Heavy_Metal_Thunder_81's Avatar
Heavy_Metal_Thunder_81 Heavy_Metal_Thunder_81 is offline
Cherokee Outlaw
 
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Location: Central Valley, CA
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Under dash AC unit

Well it seems there is a lot more wrong with my AC unit than I thought. I dont want to evac the system and disonnect the hoses when theyre all fine, I just want to be able to clean everything, replace a switch and glue a bunch of the broken ducting back together which I think will be a lot easier if I remove the AC unit from the truck. Ive removed them before but Ive always just cut the hoses because the AC didnt work in my other rigs. Can I remove the AC unit and leave the evap core and hoses connected and just remove the shell? Or if it comes down to it replace the entire shell with one in better shape? Thanks in advance.
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1979 Cherokee Golden Eagle - 7" lift, 35x12.5x15
AMC 360 - 4180, TFI, Headers, Dual Exhaust
TH400 - Shift Kit, Deep Pan, Aux Cooler
D20 - Twin Stick'd
F D44 - 3.54, Open
R D44 - 3.54, Lock'd

1979 Cherokee Chief - Parts
1979 Cherokee Chief - Parts
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1981 Cherokee Chief - Cubed
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  #2  
Old 11-26-2010, 08:49 PM
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jeepmeister jeepmeister is offline
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Location: Montana
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I unconnected the 3 hoses from the compressor, evaporator core and the condensor, removed all the screws holding the air conditioner unit, dropped it down, unhooked the electrical, unbolted the retaining strap on the passenger side, removed the drain hose and the rubber grommet at the fire wall the 3 hoses go through and pulled it all out.
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  #3  
Old 11-26-2010, 08:51 PM
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Heavy_Metal_Thunder_81 Heavy_Metal_Thunder_81 is offline
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Quote:
Originally Posted by jeepmeister
I unconnected the 3 hoses from the compressor, evaporator core and the condensor, removed all the screws holding the air conditioner unit, dropped it down, unhooked the electrical, unbolted the retaining strap on the passenger side, removed the drain hose and the rubber grommet at the fire wall the 3 hoses go through and pulled it all out.
See but if you read the whole thing I dont want to remove any of the hoses or evacuate the system. Im just wondering if I can remove the panels off the top and rear of the unit and slide the evap core out the back leaving the hoses intact so I can remove JUST the AC unit ducting
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-Jonny B.
1979 Cherokee Golden Eagle - 7" lift, 35x12.5x15
AMC 360 - 4180, TFI, Headers, Dual Exhaust
TH400 - Shift Kit, Deep Pan, Aux Cooler
D20 - Twin Stick'd
F D44 - 3.54, Open
R D44 - 3.54, Lock'd

1979 Cherokee Chief - Parts
1979 Cherokee Chief - Parts
1979 Wagoneer - Sold
1981 Cherokee Chief - Cubed
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  #4  
Old 11-26-2010, 09:10 PM
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DAHoyle DAHoyle is offline
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Location: Colorado
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http://oljeep.com/gw/82_tsm/Part%203%20Section%20E.pdf
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  #5  
Old 11-26-2010, 09:32 PM
Heavy_Metal_Thunder_81's Avatar
Heavy_Metal_Thunder_81 Heavy_Metal_Thunder_81 is offline
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Location: Central Valley, CA
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Quote:
Originally Posted by DAHoyle
Uhg...I dont think anyone is understanding what Im trying to do...
I want to remove the eavaporator core and leave it attched to the hoses without evacuating the system. On the FSJs there are 2 panels on the under dash unit that remove, exposing the evaporator core. Now can I remove these panels and slide the evap core out WITHOUT removing the hoses? Or can I maybe cut A LITTLE bit of the unit so the hoses can be slid out with the core? Or is it a no go and I have to try and work on this brittle pile of plastic crap while still hanging under the dash?
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-Jonny B.
1979 Cherokee Golden Eagle - 7" lift, 35x12.5x15
AMC 360 - 4180, TFI, Headers, Dual Exhaust
TH400 - Shift Kit, Deep Pan, Aux Cooler
D20 - Twin Stick'd
F D44 - 3.54, Open
R D44 - 3.54, Lock'd

1979 Cherokee Chief - Parts
1979 Cherokee Chief - Parts
1979 Wagoneer - Sold
1981 Cherokee Chief - Cubed
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  #6  
Old 11-26-2010, 09:44 PM
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DAHoyle DAHoyle is offline
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Location: Colorado
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Quote:
Originally Posted by Heavy_Metal_Thunder_81
Uhg...I dont think anyone is understanding what Im trying to do...
I want to remove the eavaporator core and leave it attched to the hoses without evacuating the system. On the FSJs there are 2 panels on the under dash unit that remove, exposing the evaporator core. Now can I remove these panels and slide the evap core out WITHOUT removing the hoses? Or can I maybe cut A LITTLE bit of the unit so the hoses can be slid out with the core? Or is it a no go and I have to try and work on this brittle pile of plastic crap while still hanging under the dash?

Yeah, you're welcome. I thought you might be able to glean enough information from the factory service manual, to help you figure it out. The picture looked pretty useful to me. I won't bother you any more.
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67 M715
Cummins 4BT/Allison 54/Ford203/Ford205,
Front 89 HP60/Rear 81 GM D70HD
Discs all around/ 12 bolt H1 Rims
Build still very much in progress


78 Levi edition Honcho 360/T18/D20


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  #7  
Old 11-26-2010, 09:59 PM
Heavy_Metal_Thunder_81's Avatar
Heavy_Metal_Thunder_81 Heavy_Metal_Thunder_81 is offline
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Location: Central Valley, CA
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Quote:
Originally Posted by DAHoyle
Yeah, you're welcome. I thought you might be able to glean enough information from the factory service manual, to help you figure it out. The picture looked pretty useful to me. I won't bother you any more.
lol Im terribly sorry, and thank you very much for the link, the diagram was helpful. I didnt mean to sound rude though. Just a little frustrated with this AC system.
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-Jonny B.
1979 Cherokee Golden Eagle - 7" lift, 35x12.5x15
AMC 360 - 4180, TFI, Headers, Dual Exhaust
TH400 - Shift Kit, Deep Pan, Aux Cooler
D20 - Twin Stick'd
F D44 - 3.54, Open
R D44 - 3.54, Lock'd

1979 Cherokee Chief - Parts
1979 Cherokee Chief - Parts
1979 Wagoneer - Sold
1981 Cherokee Chief - Cubed
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  #8  
Old 11-26-2010, 10:03 PM
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vintagetrks vintagetrks is offline
Bleedin' Gasoline
 
Join Date: May 01, 2009
Location: Paulden Arizona
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Man thats a good question. The only way I have seen it done is to remove the whole unit. It would be nice to be able to leave the system intact without losing your refrigerant charge. I have two underdash units sitting in my garage if your in need of one PM me.
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  #9  
Old 11-26-2010, 10:17 PM
Heavy_Metal_Thunder_81's Avatar
Heavy_Metal_Thunder_81 Heavy_Metal_Thunder_81 is offline
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Location: Central Valley, CA
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Quote:
Originally Posted by vintagetrks
Man thats a good question. The only way I have seen it done is to remove the whole unit. It would be nice to be able to leave the system intact without losing your refrigerant charge. I have two underdash units sitting in my garage if your in need of one PM me.
Either of em black?
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-Jonny B.
1979 Cherokee Golden Eagle - 7" lift, 35x12.5x15
AMC 360 - 4180, TFI, Headers, Dual Exhaust
TH400 - Shift Kit, Deep Pan, Aux Cooler
D20 - Twin Stick'd
F D44 - 3.54, Open
R D44 - 3.54, Lock'd

1979 Cherokee Chief - Parts
1979 Cherokee Chief - Parts
1979 Wagoneer - Sold
1981 Cherokee Chief - Cubed
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  #10  
Old 11-26-2010, 10:24 PM
vintagetrks's Avatar
vintagetrks vintagetrks is offline
Bleedin' Gasoline
 
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Location: Paulden Arizona
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Quote:
Originally Posted by Heavy_Metal_Thunder_81
Either of em black?

Yep they're both black
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I'm just a washed up old has been, Army guy.
My opinions are outdated... After all, what have I done lately? I used to be somebody "A SOLDIER!"

04 Jeep Wrangler "Lil Ninja" 32's 2in lift swaybar disconnects
90 Grand Wagoneer "Big Mama"
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  #11  
Old 11-26-2010, 10:27 PM
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jaber jaber is offline
Dragin Az
 
Join Date: Oct 17, 2003
Location: Chino Valley, Arizona
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I know one is, I sold it to him...

I have puled the shell off of one, but that has been too long ago to remember any details. Dont ever remember putting the plastic back on(parts rig IIRC). It can be done, just sounds like you have been nominated to take pics on your way through it.
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  #12  
Old 11-26-2010, 10:28 PM
Heavy_Metal_Thunder_81's Avatar
Heavy_Metal_Thunder_81 Heavy_Metal_Thunder_81 is offline
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Quote:
Originally Posted by vintagetrks
Yep they're both black
Hmmmmm...Google Maps says your 5 and a half-6 hours from me though...bummer
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-Jonny B.
1979 Cherokee Golden Eagle - 7" lift, 35x12.5x15
AMC 360 - 4180, TFI, Headers, Dual Exhaust
TH400 - Shift Kit, Deep Pan, Aux Cooler
D20 - Twin Stick'd
F D44 - 3.54, Open
R D44 - 3.54, Lock'd

1979 Cherokee Chief - Parts
1979 Cherokee Chief - Parts
1979 Wagoneer - Sold
1981 Cherokee Chief - Cubed
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  #13  
Old 11-26-2010, 10:29 PM
Heavy_Metal_Thunder_81's Avatar
Heavy_Metal_Thunder_81 Heavy_Metal_Thunder_81 is offline
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Quote:
Originally Posted by jaber
I know one is, I sold it to him...

I have puled the shell off of one, but that has been too long ago to remember any details. Dont ever remember putting the plastic back on(parts rig IIRC). It can be done, just sounds like you have been nominated to take pics on your way through it.
lol yea I kinda figured that...Ill probly dick with it tomarrow
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-Jonny B.
1979 Cherokee Golden Eagle - 7" lift, 35x12.5x15
AMC 360 - 4180, TFI, Headers, Dual Exhaust
TH400 - Shift Kit, Deep Pan, Aux Cooler
D20 - Twin Stick'd
F D44 - 3.54, Open
R D44 - 3.54, Lock'd

1979 Cherokee Chief - Parts
1979 Cherokee Chief - Parts
1979 Wagoneer - Sold
1981 Cherokee Chief - Cubed
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  #14  
Old 11-26-2010, 10:31 PM
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vintagetrks vintagetrks is offline
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Location: Paulden Arizona
Posts: 2,027
Well sounds like a road trip is in order. Or I have a 90 GW you can buy with a working AC unit in it. LOL
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04 Jeep Wrangler "Lil Ninja" 32's 2in lift swaybar disconnects
90 Grand Wagoneer "Big Mama"
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  #15  
Old 11-26-2010, 10:39 PM
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Heavy_Metal_Thunder_81 Heavy_Metal_Thunder_81 is offline
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Quote:
Originally Posted by vintagetrks
Well sounds like a road trip is in order. Or I have a 90 GW you can buy with a working AC unit in it. LOL
Sounds like it...hopfully the Cherk can make it out there...probly not going to be for awhile though.

On second thought ~$135 in gas just one way might be cheaper to ship it
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-Jonny B.
1979 Cherokee Golden Eagle - 7" lift, 35x12.5x15
AMC 360 - 4180, TFI, Headers, Dual Exhaust
TH400 - Shift Kit, Deep Pan, Aux Cooler
D20 - Twin Stick'd
F D44 - 3.54, Open
R D44 - 3.54, Lock'd

1979 Cherokee Chief - Parts
1979 Cherokee Chief - Parts
1979 Wagoneer - Sold
1981 Cherokee Chief - Cubed
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  #16  
Old 11-26-2010, 10:44 PM
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vintagetrks vintagetrks is offline
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Quote:
Originally Posted by Heavy_Metal_Thunder_81
Sounds like it...hopfully the Cherk can make it out there...probly not going to be for awhile though.

On second thought ~$135 in gas just one way might be cheaper to ship it

Just let me know. I think the one I got shipped from Ryan in CO. was like $25 in shipping. Certainly alot cheaper than $135 in gas.
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My opinions are outdated... After all, what have I done lately? I used to be somebody "A SOLDIER!"

04 Jeep Wrangler "Lil Ninja" 32's 2in lift swaybar disconnects
90 Grand Wagoneer "Big Mama"
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  #17  
Old 11-26-2010, 10:59 PM
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Heavy_Metal_Thunder_81 Heavy_Metal_Thunder_81 is offline
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Quote:
Originally Posted by vintagetrks
Just let me know. I think the one I got shipped from Ryan in CO. was like $25 in shipping. Certainly alot cheaper than $135 in gas.
Yea and thats just there lol
PM me what you want for it so we can get this thread back on topic
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-Jonny B.
1979 Cherokee Golden Eagle - 7" lift, 35x12.5x15
AMC 360 - 4180, TFI, Headers, Dual Exhaust
TH400 - Shift Kit, Deep Pan, Aux Cooler
D20 - Twin Stick'd
F D44 - 3.54, Open
R D44 - 3.54, Lock'd

1979 Cherokee Chief - Parts
1979 Cherokee Chief - Parts
1979 Wagoneer - Sold
1981 Cherokee Chief - Cubed
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  #18  
Old 11-27-2010, 07:14 AM
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GI-John GI-John is offline
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I have one apart right now;
I took everything out of the vehicle (the hoses were already cut)

I guess that it is possible, but you still have to drop the whole AC unit to get to the core. Hopefully with a little maneuvering you can slide it out w/o much plastic crunching.

Here is what you're looking at. There are several screws holding the cover on. I had to put a little extra force on them to break, so be careful.


Once off, here is what you're looking at. The whole core should slide out of the top, but you have to remove a few screws (that will be shown in other pics)


There are 3 screws, factory vibration dampener (think mooshy sponge-like material) and the temp probe for the temp controller. If you are not careful, you will break yours off (like I did) After those are removed, you *should* be able to slide it up and out w/o much fuss.




Hope this helps.
Be prepared for the worst though; I ended up paying way too much for some plastic.


John
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Last edited by GI-John : 11-27-2010 at 09:54 AM.
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  #19  
Old 11-27-2010, 10:28 AM
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will e will e is offline
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I had mine apart earlier this summer but mine was 'apart apart'.

I think you can do what you want to do but it will require some finesse. Worse case is you find out you can't, evac it, get a new receiver/dryer and fill it again.

I assume you run r12. It's not as expensive as it used to be.
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  #20  
Old 11-27-2010, 11:35 AM
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seventynine seventynine is offline
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I think discharging and re-charging the system will be easier. The units are hard enough to get in there when they are all bolted together...I can't imagine you will have any luck gettting it apart and back together with it still connected.

Are you running R134a?
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