SL/SLC-Class (R107) 1971-1989 : 250SL, 280SL, 450 SL, 380 SLC, 450 SL, 380 SL, 560 SL

SL/R107: 85 380SL tranny leak

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Old Apr 24, 2020 | 10:24 AM
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Rgierer!'s Avatar
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1985 380SL
85 380SL tranny leak

The car has been sitting about 4 weeks. The last time I drove it I noticed a puddle of red fluid. When I parked it I slipped a large sheet of cardboard under the car. This week I noticed the cardboard was soaked with a lot of transmission fluid and it appeared to still be actively leaking.

i jacked the car up and started to clean up the area so I could begin to make assessments. At this point it appears to be leaking from the left side of the tranny. Any ideas about what to focus on would be appreciated.

There appears to be a substantial shield around the transmission. Is this something I can remove with destabilizing the transmission?

With no more facts than what I have listed I wonder about the transmission coolant line, as I think of it as the weakest link, but at this point I have not located it. Guidance would be appreciated.

Thank you

Robin

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Old Apr 26, 2020 | 05:55 PM
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TheShadow619's Avatar
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1981 380SL
The bracket that goes under the trans pan can be removed. The other bracket is the trans support. If it is leaking on the side it has to be from on a seal; cooler line, modulator, rear drive shaft seal (running forward dripping off the brackets).
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Old Apr 27, 2020 | 09:06 AM
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1985 380SL
Thank you.

I have odered some seals and o-rings.

Wish me luck!!

Robin
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Old Jul 10, 2020 | 02:19 PM
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2003 500SL; 1985 380SL
Robin,
I recently had the same problem. My mechanic told me that the transmission pan had been over tightened at some point, and I had to get a new pan installed to fix the problem.
Frank
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