Air conditioner install using Waterloo parts

[ramdough]

OK @ramdough I couldn't wait until the weekend.

Here's some pics, but the gist of it is the front most hose is the inflow. If it trace that line back, it goes down along the passenger frame rail, then up towards the front of the engine near the front crank pulley. Both hoses lead here, one stops short (lower on the engine), and that's the return. The feed line feeding flow into the heater box comes from higher up.

I hope that makes sense.

View attachment 880157
View attachment 880158
View attachment 880159

Thanks! That will help a lot!


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[Guruman]

Got my interior unit installed today. It was a lot of work, but not a lot of drama. I found it helpful to sit the unit on top of a couple of 2x4's, as well as removing the lower portion of the gunner's platform. That gave me more room to move the unit around to get the wiring and air lines sorted out, and kept the drain tubes from getting scraped off.

A luck test revealed that the unit seems to be working fine, however my new options panel is inop, no tach, no switch illumination. I thought I remember reading something about connector under the PDP that needs hooked up to the available connector from the options panel, but I cannot find the thread, and wherever that connector is hiding, is doing it good.

 

[Guruman]

Got my condenser unit bolted up... starting to look into the hose routing. I'm a little unsure on how the whole system gets plumbed in.

So far I think the output of the pump gets a hose leading to the high pressure service port, then into the dryer, then into the condenser (top or bottom connection???), then into the evaporator, then back to the pump.

But... some diagrams I see online show the flow running into the condenser first, then into the dryer... does it matter?

Also, I think I need a crimper to fab up the lines. I ordered one from Amazon this morning, hopefully it does the job.

https://www.amazon.com/gp/product/B07S528V2N/

 

[ramdough]

Got my condenser unit bolted up... starting to look into the hose routing. I'm a little unsure on how the whole system gets plumbed in.

So far I think the output of the pump gets a hose leading to the high pressure service port, then into the dryer, then into the condenser (top or bottom connection???), then into the evaporator, then back to the pump.

But... some diagrams I see online show the flow running into the condenser first, then into the dryer... does it matter?

Also, I think I need a crimper to fab up the lines. I ordered one from Amazon this morning, hopefully it does the job.

https://www.amazon.com/gp/product/B07S528V2N/

The routing does matter. The path through the condenser matters too. The condenser is after the compressor (in the top and out the bottom), then the dryer, then the evaporator, then compressor again.

Broke Overland has a good video.

I am a little unsure about where the trinary switch goes, but I think it is ported into the dryer some how.


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[ramdough]

Here is a good picture. It looks like the trinary switch may be right after the dryer.

 

[Guruman]

The routing does matter. The path through the condenser matters too. The condenser is after the compressor (in the top and out the bottom), then the dryer, then the evaporator, then compressor again.

Broke Overland has a good video.

I am a little unsure about where the trinary switch goes, but I think it is ported into the dryer some how.


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Ya... his video is partly why I have questions.... he mentions that the flow through his condenser seems wrong... should be gas in the top. liquid out the bottom, but he shows the high pressure going in the bottom.

 

[GeneralDisorder]

Here's the FMTV A1 LSAC AC system drawings:



Item #3 is the suction hose (low side) from the evaporator to the compressor. This connects to a 90 degree pipe with a support bracket that fits into the back of the compressor. The low side charge fitting is part of the fitting on the back of the compressor. This hose is the largest diameter and the factory hose is also insulated.

Item #1 is the discharge hose (high side) from the compressor to the condenser. This hose contains the high side charge fitting as an inline splice in the hose nearer to the compressor.

Item #5 is condenser to drier.

Item #8 is drier to evaporator.



Trinary switch is going to go into the drier - where the factory setup has one of the two pressure switches - 16 in that diagram.

 

[Guruman]

thanks @GeneralDisorder

 

[ramdough]

Ok,

Few issues here….


I have everything but I am missing a few bolts.

Can someone confirm the following guesses? I hope to order today from McMaster.

Compressor to bracket: 4ea m10x1.5 x 100mm?



Upper bracket to lower bracket: 4ea m10x1.5 x 30mm?

Condenser: guessing m10x1.5 x 30mm?

Cat pulley: m10x1.5 x 85mm (I have these but confirming).

Anyone know the belt size?


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[chucky]

Ok,

Few issues here….


I have everything but I am missing a few bolts.

Can someone confirm the following guesses? I hope to order today from McMaster.

Compressor to bracket: 4ea m10x1.5 x 100mm?



Upper bracket to lower bracket: 4ea m10x1.5 x 30mm?

Condenser: guessing m10x1.5 x 30mm?

Cat pulley: m10x1.5 x 85mm (I have these but confirming).

Anyone know the belt size?


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I think i would throw the towel in at this point ! It wasnt ever gona workout so cut your losses ! Box all the stuff up and i will have someone come by and haul the stuff off ! Those bolt prices are thru the roof now just save your money !

 

[ramdough]

Here's the FMTV A1 LSAC AC system drawings:

View attachment 881104

Item #3 is the suction hose (low side) from the evaporator to the compressor. This connects to a 90 degree pipe with a support bracket that fits into the back of the compressor. The low side charge fitting is part of the fitting on the back of the compressor. This hose is the largest diameter and the factory hose is also insulated.

Item #1 is the discharge hose (high side) from the compressor to the condenser. This hose contains the high side charge fitting as an inline splice in the hose nearer to the compressor.

Item #5 is condenser to drier.

Item #8 is drier to evaporator.

View attachment 881105

Trinary switch is going to go into the drier - where the factory setup has one of the two pressure switches - 16 in that diagram.

Is #6 a rubber grommet?


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[ramdough]

Here's the FMTV A1 LSAC AC system drawings:

View attachment 881104

Item #3 is the suction hose (low side) from the evaporator to the compressor. This connects to a 90 degree pipe with a support bracket that fits into the back of the compressor. The low side charge fitting is part of the fitting on the back of the compressor. This hose is the largest diameter and the factory hose is also insulated.

Item #1 is the discharge hose (high side) from the compressor to the condenser. This hose contains the high side charge fitting as an inline splice in the hose nearer to the compressor.

Item #5 is condenser to drier.

Item #8 is drier to evaporator.

View attachment 881105

Trinary switch is going to go into the drier - where the factory setup has one of the two pressure switches - 16 in that diagram.

Do you have the full drawing you could post with parts list?


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[GeneralDisorder]

Belt is 1/2" wide, 55" long.

Compressor to bracket bolts are 10x1.5x110mm

Upper to lower bracket are 10x1.5x30mm

Condenser to frame - what you suggest should work. I grabbed what I needed from my bolt bins and didn't pay attention to size.

Crankshaft pulley bolts are 10x1.5x85mm

 

[GeneralDisorder]

Is #6 a rubber grommet?

Appears to be a rubber washer. 6mm thickness, 40mm OD and 12mm ID.,

I bolted mine up solid without those.

 

[GeneralDisorder]

Hose parts list:



Condenser parts list:

 

[ramdough]

Belt is 1/2" wide, 55" long.

Compressor to bracket bolts are 10x1.5x110mm

Upper to lower bracket are 10x1.5x30mm

Condenser to frame - what you suggest should work. I grabbed what I needed from my bolt bins and didn't pay attention to size.

Crankshaft pulley bolts are 10x1.5x85mm

Thanks! I ordered my bolts!


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[ramdough]

OK @ramdough I couldn't wait until the weekend.

Here's some pics, but the gist of it is the front most hose is the inflow. If it trace that line back, it goes down along the passenger frame rail, then up towards the front of the engine near the front crank pulley. Both hoses lead here, one stops short (lower on the engine), and that's the return. The feed line feeding flow into the heater box comes from higher up.

I hope that makes sense.

View attachment 880157
View attachment 880158
View attachment 880159

Ok, finally traced my hoses. The hoses are reversed. When I switch them back, we will know if that makes a difference with heat always on. Will update everyone.


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[Brennan]

BKubu, I'll take the Gen2 HVAC unit, tried to message you.

I have a GEN 2 HVAC unit for the cab if anyone is interested (before I put it on eBay). PM me if interested.

 

[ramdough]

Should I paint my pulley? At least the non contact surfaces?


I was surprised that it was just bare steel.


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[ramdough]

For lower bracket mounts, did you reuse the engine mount bolts or buy longer ones?


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