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#1
07-04-2006, 02:39 PM
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B2 transmission cover - 84' 300TD
I have a leak on what I think is called the B2 cover. It is the large round disk on the passenger side closer to the back of the transmission. It leaks about 2 ~ 3 tablespoons every night. I have done searches on the forum and found a link to the B2 piston replacement. In the link step 9 says:
"A most important point: do not, repeat: do not, remove the very large "O"-ring that seals the B2 piston cover. It is near impossible to re-install on a transmission still located in the vehicle. " I think that this O-ring is what I need to replace to stop the leak. Has any one tried this with the transmission in the car? Also, I can push this disk in with my hand and there is spring pressure behind it, should be able to do this? Other than the leak the transmission works fine.
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_____________________________________________ 84' 300TD 228,000 miles 02' Jetta wagon TDI 198,000 miles 02' New Beetle TDI 172,000 miles 
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#2
07-04-2006, 03:24 PM
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Yes you can replace this o ring in the car, I did mine 83 300d and the cover does push in as you describe.
there is a retaining ring that you remove by pushing in the cover and carefully pry out the ring with a small screwdriver then remove and install the new o ring and carefully reinstall the cover, push it in and install the retaining ring. thats it! worked for me. Steve
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85 300d in progress
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#3
07-04-2006, 03:53 PM
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Reply
Thanks for your reply Steve.
Where did you purchase your o-ring and do you know the part number? Also, did you have to lower your transmission by removing the cross member to get to the cover? Are the piston and the cover two separate pieces or is it all one piece? Robert
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_____________________________________________ 84' 300TD 228,000 miles 02' Jetta wagon TDI 198,000 miles 02' New Beetle TDI 172,000 miles
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#4
07-04-2006, 05:37 PM
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Quote:
Yes You must lower the trans to get to the cover  .The cover is seperate from the piston. Steve
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85 300d in progress
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#5
07-05-2006, 12:09 AM
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I always wondered about the "A most important point: do not, repeat: do not, remove the very large "O"-ring that seals the B2 piston cover. It is near impossible to re-install on a transmission still located in the vehicle. " statement. I think that only applies if you have trouble putting an o-ring in a groove. It's actually rather easy.
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'82 300SD - 361K mi - "Blue" "Good judgement comes from experience. Experience comes from bad judgement." listen, look, .........and duck.
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