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  #1  
Old 07-28-2006, 10:50 AM
rrgrassi's Avatar
mmmmmm Diesel...
 
Join Date: Jun 2006
Location: Royse City Tx
Posts: 5,177
A/C loves me, A/C loves me not

Hey all you A/C gurus out there...

I hate the Harrison R4 compressor. Is there a drop in alternative to it?

Thursday morning, I drove to work, nice icy A/C. Leave to go home, no A/C. No compressor engagment at all. Checked the pressure, hardly any. I had only one can of 134, since this was converted before I bought the car, and the compressor kicked on. I bought some of the green dye to do a leak finder.

What a pain, huh? The A/C lasted a week to the day since I picked up the car.

Thanks!

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70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K
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  #2  
Old 07-28-2006, 10:54 AM
Gary F.'s Avatar
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Posts: 110
May not be a compressor problem. The leak could be anywhere.
As far as I know, there is not a "drop in" replacement for the R4.
Let us know where the leak is, and maybe we can help.
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85 300D Ivory, 202,000
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  #3  
Old 07-28-2006, 11:00 AM
jrgslg's Avatar
1985 300sd
 
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Location: Eads TN
Posts: 217
Sounds like the compressor is working great,most likely a leak.Mine was leaking at the compressor seals for the hose connection.Phil had the parts. Goood Luck,Johnny
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  #4  
Old 07-28-2006, 11:18 AM
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Location: Deltona, Florida
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Yeah, why would you want to replace a perfectly good compressor?

Check for leaks by looking for oil. Around the compressor manifold and the expansion valve under the dash.

Danny
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  #5  
Old 07-28-2006, 11:26 AM
winmutt's Avatar
85 300D 4spd+tow+h4
 
Join Date: Apr 2006
Location: Atl Gawga
Posts: 9,346
Quote:
Originally Posted by Gary F.
May not be a compressor problem. The leak could be anywhere.
As far as I know, there is not a "drop in" replacement for the R4.
Let us know where the leak is, and maybe we can help.
Freeze12.
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  #6  
Old 07-28-2006, 11:27 AM
rrgrassi's Avatar
mmmmmm Diesel...
 
Join Date: Jun 2006
Location: Royse City Tx
Posts: 5,177
I did see some oil around the body of the compressor. The current compressor is 3 years old. I do know it is a leak somewhere, that is why I am going to do the bright green dye charge. I had a sudden loss of freon in my Altima, but that was because a rock took out the condensor. There is not any sign of oil on the condensor on my 300D. It's a sad thing that there is not a way to make an A6 compressor work. Those are pretty rock solid units.

I worked for a Caddy dealer while in high school, and that is where I got my A/C training. I replaced a ton of the R4's because of faulty front, rear and barrel seals. I do hope it is just a seal and not a hose, compressor or evaporator core.

Thanks for all the advice
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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K
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  #7  
Old 08-04-2006, 07:07 PM
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Join Date: Oct 2004
Location: Atlanta,GA
Posts: 174
I am also looking for an alternative to the R4 for my 1983 300SD . I once saw a 1985 300D with a Sanden ( Sankyo ?) but haven seen any in the junkyards .
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  #8  
Old 08-07-2006, 11:52 AM
rrgrassi's Avatar
mmmmmm Diesel...
 
Join Date: Jun 2006
Location: Royse City Tx
Posts: 5,177
Green dye test revealed freon leak at the from compressor seal. Everything else was leak free. I picked up a reman compressor and have a dryer on order from DieselGiant.

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K
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