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LMTV Air Conditioner AC Main Unit Gen1 and Gen2 Details

Ned81

Active member
114
185
43
Location
VA
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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Ned81

Active member
114
185
43
Location
VA
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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brainsboy

Member
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Location
Tampa, FL
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

Well-known member
Steel Soldiers Supporter
284
585
93
Location
Portland, OR
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

Member
Steel Soldiers Supporter
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.
Pressure switch 1.jpgPressure switch 2.jpg
 

GeneralDisorder

Well-known member
Steel Soldiers Supporter
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5,126
113
Location
Portland, OR
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

Member
Steel Soldiers Supporter
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?
 
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