i have a 1984 300 sd and the a/c belt keeps breaking can anyone help me thanks

can you rotate the A\C compressor by hand? Sounds to me likes its seized..

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2004 F150 4.6L -My Daily
2007 Volvo XC70 -Wife's Daily
1998 Ford F150 -Rear ended
1989 J-spec 420SEL -passed onto its new keeper
1982 BMW 733i -fixed and traded for the 420SEL
2003 Volvo V70 5 Speed -scrapped
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yes i can the pully is free and the ac clutch is working right it will last for about 10 miles then break

i was thinking that i had the power sterring and ac on the wrong pully around the crank but i dont have a belt diagram

Sorry, just to clarify, it lasts for 10 miles with the ac on or off?

__________________
2004 F150 4.6L -My Daily
2007 Volvo XC70 -Wife's Daily
1998 Ford F150 -Rear ended
1989 J-spec 420SEL -passed onto its new keeper
1982 BMW 733i -fixed and traded for the 420SEL
2003 Volvo V70 5 Speed -scrapped
1997 E290 Turbo Diesel Wagon -traded for above
1992 BMW 525i -traded in
1990 Silver 300TE -hated the M103
1985 Grey 380SE Diesel Conversion, 2.47 rear end, ABS -Sold, really should have kept this one
1979 Silver 300D "The Silver Slug" -Sold

I had the same problem with my first car. I just always got it on too tight... maybe loosen it a wee bit.

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[/SIGPIC]~cirrusman

1983 Mercedes Benz 300SD - Wife calls him "Chitty Chitty Bang Bang"
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1983 Toyota Tercel (Tommy, The little Toyota that could)
1965 Ford F100 (Grandma Ford)
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Gone:
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2004 Subaru Outback

1987 Cadillac Fleetwood Brougham
1986 Volvo 740 GL Station Wagon - Piece of junk.
1981 Volvo 242 DL 2 Door - Hated to see it go. R.I.P.
1987 Pontiac Fiero GT

classic signs of a/c overfilled with oil, or refrigerant.

also, a random sieze of the crank on the compressor will do this.

I'd dump the charge, flush the system, and drain the compressor, then replace the dryer and charge the oil EXACTLY as the system requires, then add in exactly the correct amount of refrigerant, and see if the compressor still eats belts.

if it does, you need a new compressor.

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
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1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

You said the pulley is free, but is the compressor free? With the belt off and the clutch disengaged you will always be able to turn the pulley freely unless the bearings are worn out. What you need to turn is the most forward portion in front of the pulleys and see if it turns smoothly, feeling the compression pulses smoothly. If it does, then it is highly likely overcharged as vs described. If OTOH, turning the forward portion makes you think there are rocks inside, then the guts of the compressor are toast.

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