Alright i have an 81 300d and i just noticed this morning that my break calipers were leaking. after coming to a stop steam started coming up from from the front of the car. and when i got home i took off the tire to look and the calipers were leaking. It seams that they are leaking from the two halves. my question is, is there some way that this can be fixed or am i stuck having to get new calipers.

Oreilly's sells a lifetime guaranteed caliper for $44 rears and $56 fronts. Not worth the effort to rebuild them for this price.
While doing it consider checking the following.

Thickness of rotor
Wheel bearings
Rubber brake hoses, should probably replace these anyways
Pads

Dave

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1970 220D, owned 1980-1990
1980 240D, owned 1990-1992
1982 300TD, owned 1992-1993
1986 300SDL, owned 1993-2004
1999 E300, owned 1999-2003
1982 300TD, 213,880mi, owned since Nov 18, 1991- Aug 4, 2010 SOLD
1988 560SL, 100,000mi, owned since 1995
1965 Mustang Fastback Mileage Unknown(My sons)
1983 240D, 176,000mi (My daughers) owned since 2004
2007 Honda Accord EX-L I4 auto, the new daily driver
1985 300D 264,000mi Son's new daily driver.(sold)
2008 Hyundai Tiberon. Daughters new car

Yah i just replaced the rotors, fluid and pads so they are all good. Are they quality parts. The brake lines need to be replaced to I will probably do it then.

There are packings between the two halves of the caliper, pretty cheap stuff probably 50 cents each i think there are two per caliper. You can even use an oring as long as it is EPDM and of a fat enough cross section.

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2003 Dodge Ram 2500 Cummins - Georend fully built trans, Banks Big Hoss Bundle, Smarty Tuner, 5" turbo back exhaust. 500 HP and 1100 ft/lbs to the ground.
1979 Mercedes-Benz 300CD - Lost to a four car pile up on 275, Thank You Michigan Drivers.
1986 Mercedes-Benz 300D - Sold, Euro non-turbo car.

You need a caliper rebuild kit

when i buy the repair kit will it come with instructions on how to replace all the parts.

I just noticed a leaking front caliper on friday. I replaced the calipers, hoses, rotors, and pads saturday morning