300D Air Con.

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mathuisella
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300D Air Con.

Post by mathuisella » Wed 20 Dec, 2017 10:36 am

Hi all, well with summer here and it's very hot... I want to get the air con going.

I cleaned off the contacts of the compressor yesturday and with help from a friend applied 12v to it and with a "snap" sound, it's safe to say the clutch engages.

Time to find an AC belt to put on and see if she runs :D

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pina4greg
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Re: 300D Air Con.

Post by pina4greg » Wed 20 Dec, 2017 5:13 pm

Just having to replace mine on the w140 300se.....not cheap... but necessary here in Perth.
:angryfire:
1992 W140 300se

mathuisella
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Re: 300D Air Con.

Post by mathuisella » Wed 20 Dec, 2017 6:14 pm

Okay, well the two belts according to Bursons and supercheap auto as well as autobarn that fit my car are the

13A1370
13A1345

So i read that as 13 wide A/V shape and 13**mm long, well i took an extension lead out to the car and put it into the grooves where the belt would go and it's 82.5cm, so i would need belt 13A0825, SCA has a 13A0825, so with a bit of adjustment it should fit :) Picking it up tomorrow.

I connected the compressor up and turned the car to "reds" or "accessory" and went to turn the AC/fans on to see if the clutch will engage, but i got a click from the relay box behind the passenger side headlight rather than the compressor itself, strange.

It was this relaxy box..
25590596_10212883848223775_703622182_o.jpg

Also, while i'm in this area, can anyone tell me where this goes ?

It doesn't seem to have a place to fit anywhere ? it's a gree wire and a black wire connected to a single pin/socket that's just loose behind the front passenger headlight area.
25593133_10212883848383779_484705269_o.jpg
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Kcodezd
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Re: 300D Air Con.

Post by Kcodezd » Wed 20 Dec, 2017 7:30 pm

Hi Math, whilst i was taking to you this evening i pulled a cable from the bottom side of that box. Does it look like a bit like a rca cable? If it does try feeling the bottom edge (of the box) for a hole about 12mm in diameter.
W123 280E
W211 E63 AMG

mathuisella
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Re: 300D Air Con.

Post by mathuisella » Wed 20 Dec, 2017 10:11 pm

Kcodezd wrote:
Wed 20 Dec, 2017 7:30 pm
Hi Math, whilst i was taking to you this evening i pulled a cable from the bottom side of that box. Does it look like a bit like a rca cable? If it does try feeling the bottom edge (of the box) for a hole about 12mm in diameter.
looks like it has come out of one of the plugs, the line goes to the glow plugs, will look further into it in the morning.


So, back to the AC.

Belt in the morning and hopefully that's all :)

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Tony From West Oz
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Re: 300D Air Con.

Post by Tony From West Oz » Wed 20 Dec, 2017 10:59 pm

mathuisella wrote:
Wed 20 Dec, 2017 6:14 pm
Okay, well the two belts according to Bursons and supercheap auto as well as autobarn that fit my car are the

13A1370
13A1345

So i read that as 13 wide A/V shape and 13**mm long, well i took an extension lead out to the car and put it into the grooves where the belt would go and it's 82.5cm, so i would need belt 13A0825, SCA has a 13A0825, so with a bit of adjustment it should fit :) Picking it up tomorrow.

I connected the compressor up and turned the car to "reds" or "accessory" and went to turn the AC/fans on to see if the clutch will engage, but i got a click from the relay box behind the passenger side headlight rather than the compressor itself, strange.

It was this relaxy box..
25590596_10212883848223775_703622182_o.jpg
That is the Glow Plug Relay. It turns the GPs off after a time delay, or after the engine starts.

Also, while i'm in this area, can anyone tell me where this goes ?

It doesn't seem to have a place to fit anywhere ? it's a green wire and a black wire connected to a single pin/socket that's just loose behind the front passenger headlight area.

25593133_10212883848383779_484705269_o.jpg
The connections to the GP relay are a heavy cable to the battery, a 4 socket plug (Ign, Temp sensor, Earth, GP lamp) and a 6 socket plug (5 sockets used) to connect to the GPs.

That cable is not part of the GP system.
Life is a journey, with problems to solve, lessons to learn, but most of all, experiences to enjoy.

'83 W123 300D 325000km (Wife's car Josephine - sold).
'84 W123 300D replaced good OM617 912 with OM617 952 and enjoyed having good acceleration for the first time since first driving a 300D in 2002 - became engine and trans donor for 300CD Turbodiesel conversion. Now parted out.
'86 W124 300D sold (Wife's old car - sold )
'85 W123 300CD, 275 000km (Fatmobile) rebuilt turbodiesel from previous Fatmobile transplanted into 280CE (occasional tourer)
'99 W202 C250 Turbodiesel (my darling Wife's car - Sold)
'98 W202 C250 Turbodiesel (my car - Sold)
'06 Ssanyong Musso Crew Cab 2WD Ute (OM662 diesel and Auto Transmission)

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Thunderbolt
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Re: 300D Air Con.

Post by Thunderbolt » Thu 21 Dec, 2017 12:13 pm

Hi hope your aircon goes well. Mine didnt work when I got the car, had no belt on either but there was one in the boot so I put that on (pain) still no joy, so rang around ac places first guy just came up with endless reasons why it would be buggered and how it would cost a fortune, finally took it to a well known place who was willing to try but he wanted the car for 6HOURS! to keep it under pressure/vacuum as he was convinced it would leak. Turned out there was nothing wrong just needed regas. He got 4 degrees at vents wich he said was better than some new cars! Cost me $240 it gets very cold in the car now happy days!
Cheers

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MaXim
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Re: 300D Air Con.

Post by MaXim » Fri 22 Dec, 2017 9:23 am

Are you folks recharging with r134a?

I have heard bad things about putting it in these old York compressors even with a full system conversion. Has anyone had experiences with Hychill?

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Tony From West Oz
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Re: 300D Air Con.

Post by Tony From West Oz » Fri 22 Dec, 2017 10:19 am

If the system had R12 in it, then use Hychill or HR12 (same stuff IIRC)
If the system had been converted to R134a, then you may need to get advice on the lubricant and seal compatibility.
Life is a journey, with problems to solve, lessons to learn, but most of all, experiences to enjoy.

'83 W123 300D 325000km (Wife's car Josephine - sold).
'84 W123 300D replaced good OM617 912 with OM617 952 and enjoyed having good acceleration for the first time since first driving a 300D in 2002 - became engine and trans donor for 300CD Turbodiesel conversion. Now parted out.
'86 W124 300D sold (Wife's old car - sold )
'85 W123 300CD, 275 000km (Fatmobile) rebuilt turbodiesel from previous Fatmobile transplanted into 280CE (occasional tourer)
'99 W202 C250 Turbodiesel (my darling Wife's car - Sold)
'98 W202 C250 Turbodiesel (my car - Sold)
'06 Ssanyong Musso Crew Cab 2WD Ute (OM662 diesel and Auto Transmission)

tsharkey
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Re: 300D Air Con.

Post by tsharkey » Fri 22 Dec, 2017 1:34 pm

MaXim wrote:
Fri 22 Dec, 2017 9:23 am
Are you folks recharging with r134a?

I have heard bad things about putting it in these old York compressors even with a full system conversion. Has anyone had experiences with Hychill?
Being a diesel, it will use the Delco compressor, I have recharged with R134a and seems to work OK (not icy cold, but cool enough....)

btw - I know I have been hard to catch - if you are around over the break, I will grab that spring compressor.
W123 1981 300TD - Family Kid mover
W202 1998 C250D Factory OM605A Turbo - Partner's daily driver
W123 1982 300CD Retro fitted OM617A Turbo - Mine
W123 1984 300TD 5 Speed Manual, to teach the kids how to drive
W123 1982 300TD Factory OM617A Turbo (Hans) - Project
W123 1985 230TE - Brother's
W123 1985 300D - Sister in Law's
1962 S-Series Valiant (Tho Daimler & Chrysler divorced, still part of the extended family)

Past benzes
W114 1969 250CE - PO put in an M110 transplant and nearly sent me around the bend
W123 1981 300TD - "Matilda" - RIP hit front side & rear but left my brother + niece A-OK

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mathuisella
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Re: 300D Air Con.

Post by mathuisella » Fri 22 Dec, 2017 7:09 pm

okay, so i got the belt on, went back and got 6 belts between 81cm to 95cm

turned out the 85cm was the go, and i'll return the others tomorrow.

Okay, so clutch engages when i apply 12v directly to the compressor clutch, but when i turn the fan dial on in the car as well as turning the wheel al lthe way to Max/blue so it clicks, the clutch doesn't engage.


Test 1, bridge the wires for the front condensor fan > fan runs
test 2, bridge wires for compressor, compressor clutch engages and runs.

test 3, Gas pressure low side. > pressed low side valve with a piece of bent metal so my hands weren't in the path. feels like about 5-10psi coming out, but it's the low pressure side.

test 4, Gas pressure High Side > Pressed small piece of bent metal in here so i didn't get my fingers in the pathway, Pressure was like 5-10PSI here as well.

what do i do now guys ?

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Tony From West Oz
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Re: 300D Air Con.

Post by Tony From West Oz » Fri 22 Dec, 2017 7:51 pm

The W123 A/C has pressure sensor and temperature sensor on the dryer.
If you have low refrigerant pressure the clutch will not engage.
No point in feeling for pressure (unless you have calibrated fingers), get someone with a gauge to measure it
Looks like you have low refrigerant in the system. get it recharged and see if it works.
Life is a journey, with problems to solve, lessons to learn, but most of all, experiences to enjoy.

'83 W123 300D 325000km (Wife's car Josephine - sold).
'84 W123 300D replaced good OM617 912 with OM617 952 and enjoyed having good acceleration for the first time since first driving a 300D in 2002 - became engine and trans donor for 300CD Turbodiesel conversion. Now parted out.
'86 W124 300D sold (Wife's old car - sold )
'85 W123 300CD, 275 000km (Fatmobile) rebuilt turbodiesel from previous Fatmobile transplanted into 280CE (occasional tourer)
'99 W202 C250 Turbodiesel (my darling Wife's car - Sold)
'98 W202 C250 Turbodiesel (my car - Sold)
'06 Ssanyong Musso Crew Cab 2WD Ute (OM662 diesel and Auto Transmission)

mathuisella
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Re: 300D Air Con.

Post by mathuisella » Sat 23 Dec, 2017 10:57 am

well, air con places are all booked out here :/ looks like after christmas when i drive back to brisbane... I was hopeful to get it done for the drive, but oh well.

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MaXim
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Re: 300D Air Con.

Post by MaXim » Wed 27 Dec, 2017 8:45 pm

Got my 300D's AC regassed today with r134a. Some extra work was needed to get the auxilliary fan to work - some previous owner had bypassed it with a switch. I converted it back to the factory configuration and shorted out the temperature sensor on the dryer to give the condenser the extra cooling it needs. It was ice cold but these older York compressors really do have a noticeable drag on an old diesel. Turning it off definitely helps with getting up to speed on a freeway onramp :laughing6: I'm very satisfied with the result and going to go there tomorrow morning with my Subie Outback whose AC is not as cold as it should be.

mathuisella
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Re: 300D Air Con.

Post by mathuisella » Thu 28 Dec, 2017 12:29 am

I got mine done today as well :D

it had already been converted to r134A gas, so we went with it.

pics of the process

connecting
26177835_10212939505095162_311330101_o.jpg
system holding vacuum
26178020_10212939504895157_734115601_o.jpg
the gas bottle used

26180010_10212939505015160_851504134_o.jpg
charging the system
26107755_10212939505415170_166855265_o.jpg


fan auto switching on
26177704_10212939505175164_275009391_o.jpg


unfortunately, i didn't get a shot of the temp :(

guy said it was 15 degrees and dropped to 13, but that was with the door open. also the front windscreen ports and the side ports were open, so not as much air was coming through the front centre vents where he had the thermometer.

did a 150km drive today and it was nice and cold :)
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Pete49
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Re: 300D Air Con.

Post by Pete49 » Thu 28 Dec, 2017 2:09 pm

Tony From West Oz wrote:
Fri 22 Dec, 2017 10:19 am
If the system had R12 in it, then use Hychill or HR12 (same stuff IIRC)
If the system had been converted to R134a, then you may need to get advice on the lubricant and seal compatibility.
According to the Hychill website says its compatible to all seals & lubes and my experience agrees as I have had no failures in over 12 months.
1978 W123 300D Maple Yellow
1981 W123 300TD Classic White (now sold)
1983 W123 280TE Champagne

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Tony From West Oz
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Re: 300D Air Con.

Post by Tony From West Oz » Thu 28 Dec, 2017 11:40 pm

Better to check than suffer seal failure and lose your gas and lube.
Life is a journey, with problems to solve, lessons to learn, but most of all, experiences to enjoy.

'83 W123 300D 325000km (Wife's car Josephine - sold).
'84 W123 300D replaced good OM617 912 with OM617 952 and enjoyed having good acceleration for the first time since first driving a 300D in 2002 - became engine and trans donor for 300CD Turbodiesel conversion. Now parted out.
'86 W124 300D sold (Wife's old car - sold )
'85 W123 300CD, 275 000km (Fatmobile) rebuilt turbodiesel from previous Fatmobile transplanted into 280CE (occasional tourer)
'99 W202 C250 Turbodiesel (my darling Wife's car - Sold)
'98 W202 C250 Turbodiesel (my car - Sold)
'06 Ssanyong Musso Crew Cab 2WD Ute (OM662 diesel and Auto Transmission)

mathuisella
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Re: 300D Air Con.

Post by mathuisella » Mon 05 Feb, 2018 4:20 am

So, it's been a little while now, pleased to report the air con is still going strong :)

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