Tanner Posted May 13, 2014 Share Posted May 13, 2014 I need to get into the dash to replace the heater core and evap core (leaking), I have a couple questions: First, just want to make sure it is completely necessary to remove the ENTIRE dash to get to these... Would love to avoid it but I fear that is not an option. Second, does anyone have or know of a video or step by step instructions on removal? I don't want to break or damage anything as parts, especially interior parts, are few and far between where I live. And third, I would love to hear any tips you guys have for this project. Thanks Link to comment Share on other sites More sharing options...
onlyinajeep726 Posted May 13, 2014 Share Posted May 13, 2014 Here you go. You can have it out in 20 minutes. http://www.cherokeeforum.com/f51/dash-removal-35444/ Link to comment Share on other sites More sharing options...
Tanner Posted May 13, 2014 Author Share Posted May 13, 2014 That was a great help thanks! Link to comment Share on other sites More sharing options...
JeepcoMJ Posted May 13, 2014 Share Posted May 13, 2014 http://www.naxja.org/forum/showthread.php?t=931690&highlight=Core Link to comment Share on other sites More sharing options...
Akula69 Posted May 13, 2014 Share Posted May 13, 2014 That is an excellent link for doing the job. I must have taken these things out 25 times if I done it once...and the thing that breaks the most is the small plastic extrusion on the bottom of the HVAC housing that holds the blend door cable in place. I have had to 'rebuild' them with sheet metal in a pinch..... Link to comment Share on other sites More sharing options...
Tanner Posted May 13, 2014 Author Share Posted May 13, 2014 Awesome, I will definitely be attempting the second write up first since I have no real desire to deal with all that electrical on the other side of the dash at the moment haha Link to comment Share on other sites More sharing options...
sloride Posted May 13, 2014 Share Posted May 13, 2014 Hope you have better luck finding an evarporator core than I'm having. Had one on order since April from jeep4x4center. Told me 60-90day wait. Tried Rockauto but the one they supplied didn't look like my old one, nor could I get it to fit. Thought found one on ebay but order was canceled due to being out of stock...... Link to comment Share on other sites More sharing options...
Tanner Posted May 13, 2014 Author Share Posted May 13, 2014 I have one already but I'm not sure that it's the right one... I haven't pulled it apart and test fit it yet. Try teamcherokee.com Link to comment Share on other sites More sharing options...
Tanner Posted May 13, 2014 Author Share Posted May 13, 2014 There were two different AC options one was factory AC and the other I believe was American air Link to comment Share on other sites More sharing options...
JeepcoMJ Posted May 13, 2014 Share Posted May 13, 2014 Advance auto, bumper to bumper, carquesr all have heater cores in stock or next day for under $60. Link to comment Share on other sites More sharing options...
sloride Posted May 14, 2014 Share Posted May 14, 2014 I checked out teamcherokee like you suggested and the a/c evaporator they have has the correct connection location. They're staggered and not in line and that's what I need BUT the coils are vertical. My old one the coils are horizontal. Why does that matter? The capillary tube is like six inches long and needs to be inserted into the back. You'll see the tube in the front of your heater box. I'd be interested to see how capillary tube works with that core. Thanks. Link to comment Share on other sites More sharing options...
Tanner Posted May 14, 2014 Author Share Posted May 14, 2014 I don't know that the orientation of the coils does matter, as long as it is the correct dimensions and connections... Don't quote me on that though, I'm not an "AC guy" as it were. I'd be interested to hear someone else's input Link to comment Share on other sites More sharing options...
onlyinajeep726 Posted May 14, 2014 Share Posted May 14, 2014 I don't think vertical or horizontal matters. The freon is going to flow through regardless. Link to comment Share on other sites More sharing options...
Comanchemodder Posted May 14, 2014 Share Posted May 14, 2014 I had dealer installed a/c; the evaporator is smaller and the rockauto and jeepair.com cores are for factory air and won't fit in the airbox.. I ended up yanking a factory air box from the JY and swapping mine out. Now the factory evaporator cores fit. see my last update: http://comancheclub.com/topic/41895-direction-unknown-build-87-25l-2wd/ Link to comment Share on other sites More sharing options...
JeepcoMJ Posted May 14, 2014 Share Posted May 14, 2014 Vertical coils are bad in refer systems that use r12...the lube in the freon will sit at the bottom of the coils, which is why the r12 use horizontal coils. The vertical coils actually allow for more surface area for the fan to blow through. For some reason, while it's a minor concern with r134, it doesn't affect it nearly as much. Just update your system to r134 while you are at it. Link to comment Share on other sites More sharing options...
sloride Posted May 14, 2014 Share Posted May 14, 2014 I need a hole for the capillary tube. The vertical coils are in the way. My old core the tube inserts parallel to the coils. Link to comment Share on other sites More sharing options...
onlyinajeep726 Posted May 14, 2014 Share Posted May 14, 2014 Vertical coils are bad in refer systems that use r12...the lube in the freon will sit at the bottom of the coils, which is why the r12 use horizontal coils. The vertical coils actually allow for more surface area for the fan to blow through. For some reason, while it's a minor concern with r134, it doesn't affect it nearly as much. Just update your system to r134 while you are at it. Once again, you have taught me some invaluable information Pat. That's really good to know. Thanks. :bowdown: Link to comment Share on other sites More sharing options...
Tanner Posted May 14, 2014 Author Share Posted May 14, 2014 I had dealer installed a/c; the evaporator is smaller and the rockauto and jeepair.com cores are for factory air and won't fit in the airbox.. I ended up yanking a factory air box from the JY and swapping mine out. Now the factory evaporator cores fit. see my last update: http://comancheclub.com/topic/41895-direction-unknown-build-87-25l-2wd/ That is great information! Bad news for me lol but good info. I'm pretty sure I also have the wrong evap core and there isn't a junk yard within 100 miles of me that has any Cherokee's from the years '86-'98... Disheartening of course because I will have to ship back the one I have and order the proper one. While on the topic, I have my whole original AC system pulled out, will it cause any damage to the new compressor( not hooked up to anything but the mount and the belt) to run the truck without the rest of the system hooked up until I receive the proper core? Like I said I don't know a lot about AC components Link to comment Share on other sites More sharing options...
onlyinajeep726 Posted May 14, 2014 Share Posted May 14, 2014 Yea, it won't hurt anything. The compressor clutch isn't engaged until it's switched on, and even then, with no freon in the system, it shouldn't be able to come on anyway. Link to comment Share on other sites More sharing options...
Tanner Posted May 14, 2014 Author Share Posted May 14, 2014 Alright that's what I figured I just didn't want to screw up the brand new compressor I bought. Thanks Link to comment Share on other sites More sharing options...
JeepcoMJ Posted May 14, 2014 Share Posted May 14, 2014 Unplug the ac clutch wire on the compressor and you will be good to go Link to comment Share on other sites More sharing options...
Tanner Posted May 14, 2014 Author Share Posted May 14, 2014 Okay thanks. I just can't leave the whole the pulled apart not running while I wait on the core. It took a little over a week for the first one to get here and there were no options to accelerate the shipping process. Link to comment Share on other sites More sharing options...
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