Rear fender condenser to Red Dot install thread

[Coug]

So I just got in a fender mounted A/C condenser to install in the left rear fender. There are a couple things that I need some assistance with.


Does anyone know the dimensions for the bracket to hold up the rear of the condenser? I suppose I can just do some measurements of the condenser itself to see approximately what it should be, but was hoping someone could provide actual measurements.


Does the receiver/dryer have to be mounted under the fender? I'm going to be using this with a red dot evaporator, and already have a spot for the receiver/dryer inside the cab, so wondering if there is a good reason to relocate it.

Going along with the last question, the Red Dot doesn't have a trinary switch on the receiver/dryer to control the fans, on the red dot the switches seems to be built into the piping in the evaporator. Can I just run wires from there back to the fans to control them, or so I really need to buy the receiver/dryer with trinary switch and relay for controlling the condenser fans?


Does anyone have part numbers for the brackets and splash guard that goes in front of the condenser in the fender? The plastic guard has holes to attach it to the metal splash guard at the front. I looked through the parts TM and didn't find those parts (and yes, it was the newer TM that covers these air conditioner systems)


Another question, anyone know the dimensions of the cut outs for the vent, and where it's located going from the rear of the fender and the top of the fender?


I have minor experience repairing A/C systems, but none actually building them/modifying them.

 

[Coug]

So one thing I didn't know/realize is that the condenser can't be used with the deep water fording kit because the reinforcement bracket is in the way of installing it. Not a big deal as I don't plan on going through deep water, and it was starting to get kind of beaten up anyway because of how far it sticks out and the jeep trails being too narrow.


One odd thing I just found is the receiver/dryer was hooked up with the "in" port going to the evaporator. I'm 99.9% certain that isn't how it's supposed to be, so now I have to order a couple fittings because the ones with the red dot setup are the wrong bend radius for where I have it located.

 

[Retiredwarhorses]

Newer trucks use a captive nut plate for the fording exhaust, the Condensor bracket you Seek is in the TM and orderable from Mac motors There are left of lefts of this bracket, so get the correct one... makes no difference where your drier is located. Red dot puts the high and low switch on the drier on several variants, on the m1123 trucks the variant has them on the high and low pressure hard lines.

 

[Coug]

Newer trucks use a captive nut plate for the fording exhaust, the Condensor bracket you Seek is in the TM and orderable from Mac motors There are left of lefts of this bracket, so get the correct one... makes no difference where your drier is located. Red dot puts the high and low switch on the drier on several variants, on the m1123 trucks the variant has them on the high and low pressure hard lines.
View attachment 798428

Looked in TM 9-2320-387-24p and came up with a part number for the bracket, 6015674.
Every search I do for that part number comes up with a non metallic grommet.

So did a search for the description on a couple of the parts sites, finally came up with 6015665 as the part number for the left rear condenser bracket. Typed that into Mac's website and comes up correctly.

 

[Retiredwarhorses]

I only know of the bracket as I’ve seen them in the newer trucks, don’t have a part number, it mirrors that area with 4 riv nuts on the plate, one could make one pretty easily

 

[Coug]

I only know of the bracket as I’ve seen them in the newer trucks, don’t have a part number, it mirrors that area with 4 riv nuts on the plate, one could make one pretty easily

I decided to order one because I'm waiting on a couple other things to finish this out anyway.


Do you know if the holes needed for the rear bracket are already in the fender or am I going to be playing this by ear trying to figure out where to drill all these new holes in the fender?

I'm going to guess they aren't, so any chance someone here can do some measuring for me to get me started with where the bracket actually gets attached?

considering this thing had some armor on it, a few more holes aren't really going to be noticable if I screw it up.

 

[Coug]

So another question for those that have worked with these condensers.
How does it get sealed against the fender? I originally thought it would be right up against the outside of the fender, but now realizing that isn't going to happen, so wondering what is used to seal up that space so it doesn't just recirculate hot air.

 

[Retiredwarhorses]

So another question for those that have worked with these condensers.
How does it get sealed against the fender? I originally thought it would be right up against the outside of the fender, but now realizing that isn't going to happen, so wondering what is used to seal up that space so it doesn't just recirculate hot air.

It just mounts in the fender, there are no seal, the fender cutout is intake, the fans pull the air down and exhaust out the back after the plastic cover is installed.

 

[TOBASH]

AFAIK you need to cut louvres into the fender.

 

[Coug]

So the pictures I see of this bracket installed shw the angled reinforcement part that sticks down towards the rear of the truck.
the bracket I received has the flat angled portion facing the front.
Can someone confirm the one I have is correct or did I possibly get sent the wrong side?
If it's the correct one, then it looks like I mounted it a little too far forward (I was going by pictures I found of where to drill the holes)

 

[Coug]

AFAIK you need to cut louvres into the fender.

Yes, I will get to that once I know everything actually fits in there how it's supposed to. I'm hesitant to just start hacking holes in the fender when there's a small chance this won't work/gets screwed up/I go insane first.

 

[TOBASH]

Please take pictures. I gotta do this in 2 months.

LOL

 

[Coug]

Please take pictures. I gotta do this in 2 months.

LOL

After I figured out exactly what I was doing I was planning on taking pictures with measuring devices to make it easier for the next poor sod who tries to do this.
I've only found a couple threads that have had useful information, mostly over on G503.com, along with this gallery http://galuba.org/hummer/index.php?spgmGal=AC&spgmPic=59&spgmFilters=#pic

 

[Coug]

note to add about the bracket, the picture in the manual shows the vertical flat portion facing the rear, not the front like it looks when installed in my truck, so I'm leaning towards having received the incorrect bracket.

 

[Retiredwarhorses]

note to add about the bracket, the picture in the manual shows the vertical flat portion facing the rear, not the front like it looks when installed in my truck, so I'm leaning towards having received the incorrect bracket.

the bracket is backward....that flat part goes to the rear.
look at the rear of the condenso, you can see the channel is slides into.

 

[Coug]

the bracket is backward....that flat part goes to the rear.
look at the rear of the condenso, you can see the channel is slides into.

That's what I thought, so they definitely sent me the incorrect bracket. Description says "LH" , as opposed to RH, so I doubt I ordered the wrong one.

 

[Retiredwarhorses]

So the pictures I see of this bracket installed shw the angled reinforcement part that sticks down towards the rear of the truck.
the bracket I received has the flat angled portion facing the front.
Can someone confirm the one I have is correct or did I possibly get sent the wrong side?
If it's the correct one, then it looks like I mounted it a little too far forward (I was going by pictures I found of where to drill the holes)


View attachment 799609

the longer leg goes on the outside, if that’s a left fender condensor?

 

[Coug]

the longer leg goes on the outside, if that’s a left fender condensor?

yes, I have it installed longer leg to the outside.

 

[Coug]

So looks like I have 2 choices. I can call up Mac Motors and complain that they shipped the wrong one, or I can do some grinding and welding to move the flat part to the rear. Third option I suppose is use this one as a pattern and make one.

This bracket is the last piece I needed to install the condenser, and finish up the system, so kind of annoyed about all this (but who wouldn't be annoyed about getting the wrong part after waiting over a week)

 

[Coug]

pulled it out, found a barely legible part number stamped into it. Quick search of 4108852 crosses to 6015673, which is labeled as the RH bracket in the TM.