LMTV Air Conditioner AC Main Unit Gen1 and Gen2 Details

[GeneralDisorder]

On the Gen 2 anyway the holes have to be drilled in the cab for the AC fittings. The heater coolant fittings are the same as the non-AC box.

 

[DTinNC]

On the Gen 2 anyway the holes have to be drilled in the cab for the AC fittings. The heater coolant fittings are the same as the non-AC box.

Cool thank you for the tips.

 

[Ned81]

I figured out that my condenser fan pressure switch on the dryer is bad. If I jump the purple wires together the fans run all the time ( which isn’t the worst thing). I need a new pressure switch but I have to idea how to find the correct one. No numbers on it at all. Does anyone know what will work?

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[GeneralDisorder]

Is this a factory system such that part numbers will be in the TM?

What is your truck serial number? If it's a TM part I will need the serial number to look it up.

 

[Ned81]

Is this a factory system such that part numbers will be in the TM?

What is your truck serial number? If it's a TM part I will need the serial number to look it up.

Thanks!
It is a factory red dot gen2
A-t011014edkg


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[GeneralDisorder]

5930-01-573-8366
RD-5-11064-0

I see several on eBay for quite reasonable.

 

[Ned81]

5930-01-573-8366
RD-5-11064-0

I see several on eBay for quite reasonable.

Thanks General! I appreciate it!


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[brainsboy]

Just making conversation but I just added A/C to my LMTV and you can get an evaporator for a BUS off of ebay which has the housing and blower motor, just remove the housing and fan and use the evap/heater core with expansion valve(all one piece) fits directly in the stock location of your LMTV, or least it did on mine which is a 2001. Just cut two holes for the a/c lines and keep the same heat core lines and it all looks original.

 

[Lostchain]

Just making conversation but I just added A/C to my LMTV and you can get an evaporator for a BUS off of ebay which has the housing and blower motor, just remove the housing and fan and use the evap/heater core with expansion valve(all one piece) fits directly in the stock location of your LMTV, or least it did on mine which is a 2001. Just cut two holes for the a/c lines and keep the same heat core lines and it all looks original.

Sounds awesome, can you share some pictures?

 

[High Water]

5930-01-573-8366
RD-5-11064-0

I see several on eBay for quite reasonable.

I ordered the above switch from ebay. The pressure ranges were not exactly the same as my original but close enough for me to take a chance. Well, the electrical connection is slightly different so I didn't install it. I have been searching for several weeks now for the correct switch, Red Dot schematics, SS, FB and still haven't found the correct one. Maybe I am just searching in all the wrong places. (Hey could be a song).

Attached is a couple of photos of the inop switch, OFF 370 psi ON 263 psi. I installed the R-5760 unit back in 2019 and it has worked well since. I don't know if it is Gen 1 or 2, I don't know what the differences are. Looking for help.

 

[GeneralDisorder]

I ordered the above switch from ebay. The pressure ranges were not exactly the same as my original but close enough for me to take a chance. Well, the electrical connection is slightly different so I didn't install it. I have been searching for several weeks now for the correct switch, Red Dot schematics, SS, FB and still haven't found the correct one. Maybe I am just searching in all the wrong places. (Hey could be a song).

Attached is a couple of photos of the inop switch, OFF 370 psi ON 263 psi. I installed the R-5760 unit back in 2019 and it has worked well since. I don't know if it is Gen 1 or 2, I don't know what the differences are. Looking for help.
View attachment 929609View attachment 929610

Interesting - have you considered reaching out to Red Dot and asking them?

 

[High Water]

Interesting - have you considered reaching out to Red Dot and asking them?

I have not, but good idea.

 

[High Water]

I have been communicating with Red Dot support and they have been quite responsive which is refreshing. Now they are asking me for the condenser model as the R-5760 refers to the inside unit. I have three schematics .pdf files but none appear to show the condenser model. I did send Red Dot the following tidbits of information and am waiting for their reply:

CONDENSER ASSEMBLY RD-4-6000-0 TV040108
CONDENSER HARNESS RD-4-6001-0 TV040091
(2) PURPLE - FAN CYCLING SWITCH AC RECEIVER-DRIER
- note: I can confirm there is a purple wire on the switch connector but there is no part number listed on the schematics.
TO CONDENSER (RO-4-6200-0) FAN POWER DEUTSCH DT04-4P
SEE RD-3-12396 SHEET 1 FOR SYSTEM DETAILS
- note: I do not have this schematic. I did google it but no positive result.

Does anyone know the Red Dot condenser model?