Working on AC and I forgot which one goes where. where does the red switch go on he top or the bottom of the dryer?

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1984 300SD Turbo Diesel 150,000 miles

OBK member #23

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The switch for the fan goes on the top of the drier. It does NOT have the O-ring on it.

The compressor cut out switch goes on the bottom. It has the tiny o-ring.

Hope that helps.

Scott

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Scott
1982 Mercedes 240D, 4 speed, 275,000
1988 Porsche 944 Turbo S (70,000)
1987 Porsche 911 Coupe 109,000 (sold)
1998 Mercedes E300 TurboDiesel 147,000 (sold)
1985 Mercedes 300D 227,000 (totaled by inattentive driver with no insurance!)
1997 Mercedes E300 Diesel 236,000 (sold)
1995 Ducati 900SS (sold)
1987 VW Jetta GLI 157,000 (sold)
1986 Camaro 125,000 (sold - P.O.S.)
1977 Corvette L82 125,000 (sold)
1965 Pontiac GTO 15,000 restored (sold)

Yeah I got it. Had them in the wrong place.

Got everything sealed up tight, no leaks after a good flushing. 3 ounces of new oil. Charged it up and had around 150# on the high side and 35# on the low side. Doesn't cool very good. There are bubbles in the sight glass.
Outside temp around 88 degrees.
Should the high side be that high or should I charge until the low side gets to around 40# and be happy? I'm thinking it's undercharged or 3 ounces of oil is too much?

Any comments?

Danny

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1984 300SD Turbo Diesel 150,000 miles

OBK member #23

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Charged with ...?

R-12 of course

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1984 300SD Turbo Diesel 150,000 miles

OBK member #23

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Did you use a real vacuum pump or one of the cheap Harbor Freight versions? It sounds like you might have moisture in the system.

3oz of oil is a bit too little rather than too much. What were you charging with? 12 oz cans? 30lb container? Low side pressure of around 40 is about right but I always charge based on weight.

Scott

__________________
Scott
1982 Mercedes 240D, 4 speed, 275,000
1988 Porsche 944 Turbo S (70,000)
1987 Porsche 911 Coupe 109,000 (sold)
1998 Mercedes E300 TurboDiesel 147,000 (sold)
1985 Mercedes 300D 227,000 (totaled by inattentive driver with no insurance!)
1997 Mercedes E300 Diesel 236,000 (sold)
1995 Ducati 900SS (sold)
1987 VW Jetta GLI 157,000 (sold)
1986 Camaro 125,000 (sold - P.O.S.)
1977 Corvette L82 125,000 (sold)
1965 Pontiac GTO 15,000 restored (sold)

No I did not use cheap Harbor freight tools. I used this:
http://www.denlorstools.com/home/dt1/page_3843_214/robinair_rob15234_1.2_cfm_2_stage_vacuum_pump_r_12.html

Pulled down to 30" for 3 hours and held there for 1/2 hour before charging. It's kind of hard to believe there's moisture in the system.

I charged from a 30lb container and purged the lines before charging.

Danny

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1984 300SD Turbo Diesel 150,000 miles

OBK member #23

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At what engine rpm?