M1151 M1165 M1152 A/C Charge

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M1151 M1165 M1152 A/C Charge

Post by Ted Gates » Sun Oct 23, 2016 7:15 am

Hi all,
I'm starting this thread so that there is a collection of factory a/c installation information. Such as freon charge and oil quantities.
I found thus far:
R4 compressor, Delphi 1135 , Part number 52381135

Freon F134A

Compressor oil:
Polyalkylene Glycol Oil, PAG 150 (180 Viscosity), AC Delco #15-118

Oil volume, new system not prelubed:
Compressor 9 FL Oz, Evaporator 3 FL Oz, Condenser 1 FL Oz, Accumulator 2 FL Oz.

Freon charge, fl oz, for
2 man, front only: R134a, 1 lb 7 Oz (0.65 kg)
4 man, front and rear: R134a, 3 lb 8 Oz (1.59 kg)

Ambient temperature chart for R134A
Outside temp 65f, low pressure 25-35psi, high pressure 135-155psi
70f, 35-40, 145-160
75f, 35-45, 150-170
80f, 40-50, 175-210
85f, 45-55, 225-250
90f, 45-55, 250-270
95f, 50-55, 275-300
100f, 50-55, 315-325
105f, 50-55, 330-335
110f, 50-55, 340-345

P/T charts are on the net....

If you have additional factual information here please post for this series hmmwv. Not red dot stuff...

Ted


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Re: M1151 M1165 M1152 A/C Charge

Post by Ted Gates » Wed Nov 09, 2016 7:21 am

Here is a wiring schematic for this series truck. This is only a supplemental diagram and in no way should be used as a replacement to the Technical Manuals for the HMMWV.
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Re: M1151 M1165 M1152 A/C Charge

Post by Ted Gates » Wed Feb 21, 2018 4:07 am

I thought I would dredge this up from the board so that hmmwv ac installers would know it exists. I have done a few of these and this is very helpful.

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Re: M1151 M1165 M1152 A/C Charge

Post by Action » Wed Feb 21, 2018 1:36 pm

These new systems are very good. I rarely put mine on HIGH in the SW FL summer. Glad I have it! :D

Jason

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Re: M1151 M1165 M1152 A/C Charge

Post by NateTheGreat » Tue Jun 25, 2019 10:19 am

The updated fan switch nameplate for this AC setup is:
NSN 9905-01-583-7286 / 12480917 TACOM

It is not correctly listed in the TM parts breakdown drawings (change 02 revision of TM ...387-24P, Jan. 2006).

Ted / Jason / gurus, I'm trying to gather a couple details regarding wiring harness for the setup for the purposes of cloning the harness. See following questions, any help is much appreciated.

1) For the harness to the rear A/C evap unit there is a 4 pin Deutsch connector (DTP connector) along the tunnel. Can someone ring this out in relation to your schematic with a DVM? i.e. this connector would pass along 416D, 436E, 7L, 720A and I want to know which one is pin1 through pin4 at the DTP connectors.

2) Similarly what are the connections at the cannon connector pins? I can figure this out later, but would be nice to have here too.

3) What is the exact length from the end of the cannon connector to the end of the Deutsch connector?

4) Could someone confirm the part # off the Cannon connector on the harness? I'd figure this out from my rear A/C unit, but I'm a couple states away from my parts for a while. From pics it looks like a bayonet style mil 5105 series, 8-pin, 22-23S shell layout? i.e. Cannon CIR or ca3106?

The rest looks relatively simple. The tricky details are all in the rear harness.

Thanks,
Nate

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Re: M1151 M1165 M1152 A/C Charge

Post by Action » Tue Jun 25, 2019 1:46 pm

I cant help. Mine is a 2-man.

Jason

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Re: M1151 M1165 M1152 A/C Charge

Post by 86humv » Tue Jun 25, 2019 2:58 pm

Image
Look up :
ITT Cannon CA-B / CB series bayonet connectors.
Plug has ink stamp : ITTC 0646 ccu230 which has nothing to do with part number.
P.N. CB6E22-23S _S_ ......Is close to what it is.
86 Hmmwv
Lots A parts
M101A2 trailer
M1102 trailer

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Re: M1151 M1165 M1152 A/C Charge

Post by NateTheGreat » Tue Jun 25, 2019 3:35 pm

Excellent thank you Greg. I have ca3106e22-23sb jotted down as my connector of choice. I believe it should be the right match based on your info.

Could you measure out the length of that same harness?
Last edited by NateTheGreat on Wed Jun 26, 2019 4:44 am, edited 1 time in total.

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Re: M1151 M1165 M1152 A/C Charge

Post by Ted Gates » Wed Jun 26, 2019 4:39 am

I tried to measure it installed with seat in the way, it seemed to be about 43". Measured twice!
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Re: M1151 M1165 M1152 A/C Charge

Post by NateTheGreat » Sun Jun 30, 2019 8:07 am

Ted, thanks for double-checking that. Just got my connector in. Ended up with a surplus CIR06AF-22-23S as an alternate. Might pick your guys brains about harness routing in a few spots. Most of it I can figure out from your build pics.

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Re: M1151 M1165 M1152 A/C Charge

Post by ant929 » Thu Feb 25, 2021 1:48 am

Could you direct me to the TM for trouble shooting the A/C for the 1165A1. I just got mine the other day and A/C is blowing hot. Would like to know the first few things to check. Thanks

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Re: M1151 M1165 M1152 A/C Charge

Post by Ted Gates » Thu Feb 25, 2021 4:33 am

[quote=ant929 post_id=1875612 time=1614250083 user_id=170220]
Could you direct me to the TM for trouble shooting the A/C for the 1165A1. I just got mine the other day and A/C is blowing hot. Would like to know the first few things to check. Thanks
[/quote]

The first thing to check is the electrically activated heating valve. It fails open and the heating coil has more btu's than the cooling, so you get hot quick (that happened to me and I though the ac was bad but it was this valve). If that is ok, then check to see if compressor is activating (look at its clutch for engagement). If not, then perhaps only a low charge is your problem or bad compressor (somewhat rare). I would not dig into harnesses until ALL the simple things are investigated.

Here is a diagram I did for reference.
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M1165 AC WIRING.png

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Re: M1151 M1165 M1152 A/C Charge

Post by Action » Thu Feb 25, 2021 12:12 pm

FWI, the electric valve takes a minute or so to close, so you will get hot or warm air to start with, until it closes all the way. Just have someone watch it while you turn the a/c on, to verify if it is working or not, Or, take a pic of it before starting and then after a/c has been on for a couple minutes to compare. The valve is over by the radiator overflow tank. It has a 90 degree hose on each side. (5/8").
I don't put fan on HI until it starts blowing cold.
You can check the charge easily, too. Just like any other car. The hi and low ports are just behind the compressor.

Jason

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Re: M1151 M1165 M1152 A/C Charge

Post by ant929 » Fri Feb 26, 2021 4:57 am

Thanks guys, you are amazing. the valve was stuck in open and it was only blowing hot air. Thank you so much.

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Re: M1151 M1165 M1152 A/C Charge

Post by CarmelIndianaM1151A1 » Tue May 23, 2023 8:04 pm

Hey, I'm digging into the HVAC on my 1151 and 258xxx. So far, I jumpered the thermostat on passenger side, got the rear fan blowing. Compressor clutch will not engage. Replaced the heater core valve with a regular manual valve, dash still blows hot.

I jumpered the low side switch, compressor still wouldn't activate. I have 24v at harness.

With truck running, checking low side pressure the gauge shows 130psi with the trigger open, no pressure with trigger depressed (trying to fill).

I can hand rotate the clutch. Even if pressure was low, it should engage when jumping low side switch right? The engine bogs down just a little bit with low side switch jumpered, but clutch won't engage.

Can I jumper the compressor by running a ground wire and a 24v wire to try and get the clutch to engage?

Any help would be appreciated.


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