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  #1  
Old 04-18-2010, 04:58 PM
JWJ JWJ is offline
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Join Date: Sep 2005
Location: Raleigh, North Carolina
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Transmission leak

My '85 300TD leaks a quart of fluid every ~800 miles. It seems to only leak during the warm months.

I've briefly checked underneath, but the leak is not coming from the pan gasket.

What other leak locations are possible?

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JWJ
1983 MB 300D - > 430,000 miles - Deep Blue - Bilstein Comforts - 0-60 in 24 seconds - 27MPG
1985 MB 300TD (wagon) - > 275,000 miles - Manila Beige - Thule rack - 0-60 in 18 seconds - 22 - 25MPG
Biodiesel, Mobil Delvac 1, and Viton fuel lines!
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  #2  
Old 04-18-2010, 06:51 PM
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Modulator maybe? Can you tell which side it is leaking on?
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Old 05-26-2010, 06:47 PM
JWJ JWJ is offline
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Quote:
Originally Posted by toddyvol View Post
Modulator maybe? Can you tell which side it is leaking on?
The leak is on the driver's side of the trans. The modulator area and below is the most wet. It only leaks when in gear, so it's hard to locate the area. (I don't have a lift.)

Is the modulator seal/ring a PITA?

Is there a book for the trans?
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JWJ
1983 MB 300D - > 430,000 miles - Deep Blue - Bilstein Comforts - 0-60 in 24 seconds - 27MPG
1985 MB 300TD (wagon) - > 275,000 miles - Manila Beige - Thule rack - 0-60 in 18 seconds - 22 - 25MPG
Biodiesel, Mobil Delvac 1, and Viton fuel lines!

Last edited by JWJ; 05-26-2010 at 06:57 PM.
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  #4  
Old 05-26-2010, 10:39 PM
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Join Date: Nov 2009
Location: Victoria Australia - down under!!
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There is a good trans manual, I think Phil at fastlane can help you. Click the buy parts link!

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1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
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