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#1
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Transmission went south
Well went to the store today, every thing's normal except for the new rust hole I found in the firewall under the battery on my rust free southern body and slicing my finger good pulling goop off the rust. Came out of the store, started my car, put it in D and press the pedal. It revs but I'm not moving, whats going on, I check to make sure its in D and not N and sure enough its in D. So I try to move the shifter a few positions and try again, shut the car off then restart, check the fluid (full), disconnect the kick-down switch. NOTHING WORKS. I was able to nurse the car the mile home.
-reverse works completely normal -will not shift into first, can get it to catch slightly around 3000 rpm with the brakes depressed (load) and s l o w l y get it to move until it gets to the point to shift into 2nd -once nursed up to speed all the other gears shift flawlessly with no slippage. I just replaced the vacuum modulator. 1-2 was tad harsh, 2-3 slipped a bit maybe 200 rpm, 3-4 was fine. Someone please tell me whats wrong and that its a simple adjustment or spring. Where can I get a quality rebuilt transmission?
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Adam Lumsden (83) 300D Vice-President of the MBCA International Stars Section Last edited by rg2098; 04-25-2005 at 09:29 PM. |
#2
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Sounds like the B2 piston broke. I hear it has been replaced without removing the trans in a W123. A W126 has more room though.
See: http://transmission.articles.mbz.org/b2/
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Michael LaFleur '05 E320 CDI - 86,000 miles '86 300SDL - 360,000 miles '85 300SD - 150,000 miles (sold) '89 190D - 120,000 miles (sold) '85 300SD - 317,000 miles (sold) '98 ML320 - 270,000 miles (sold) '75 300D - 170,000 miles (sold) '83 Harley Davidson FLTC (Broken again) :-( '61 Plymouth Valiant - 60k mikes 2004 Papillon (Oliver) 2005 Tzitzu (Griffon) 2009 Welsh Corgi (Buba) |
#3
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Stop spinning up the engine, wearing away your B2 band and running the metal bits from the B2 piston through the transmission! Ok, that said, go read all up about the B2 piston replacement, set aside a saturday morning, about 200 bucks, and get it done. Don't forget to change the transmission filter, fluid, and do the K1 accumulator spring upgrade while you're there. Then you will once again be a happy camper..
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Quote:
From what this says and whatI have seen in previous threads and this one, looks like youll be replacing the B2 piston. Sure stinks about the rust too doesnt sould like such a fun day |
#5
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B2 it is!
Yup its the B2. Make sure you read all the threads and get the parts you need. Its an easy job, however I haven't done one with the trans in the car. It shouldn't take longer than a day to finish if you have all the parts.
Good luck! Keep us updated!
__________________
-Randy Wakefield 1969 220D 4 speed (parts car) 1976 280C 1976 280S 1981 240D 4 speed (parts car) 1982 300D 1983 300TD (Ivory) 1983 300TD (gold) 1985 300TD (gray) 1987 190D 2.5 1970 280SEL (sold) 1977 240D 4 speed (sold) 1974 280 (rusted to death) --- 1927 Chevy 4 door sedan 1938 Chevy 2 door sedan 1950 Willys Jeepster 1955 Studebaker President 4 door 1977 Ford F250 1979 Glastron 17' 1948 John Deere A 1960 John Deere 2010 1979 Satoh S650G -- 2000 Bichon (Doby) |
#6
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I will order the parts today and they will be here tomorrow. I completely forgot about the B2 piston trying to figure out what went wrong. I willlet you know how it comes out.
Note: K1, filter, fluid all done within the last 500 miles. What would I do without you guys and this forum!
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Adam Lumsden (83) 300D Vice-President of the MBCA International Stars Section |
#7
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Mine did the same thing a month ago...had my local mechanic replace the B2 piston and 2,000 miles later it's shifting great.
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1983 300D 218K miles |
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Hey Rockhopper- bet I can guess who your mechanic is(Rick?). Why did it take 2k miles to shift well again?
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'02 BMW 325i '85 300D 450k '93 190E 2.6 170k(killed by tree) '08 Ducati Hypermotard 1100S 6k '06 Ducati S2R800 14k(sold) |
#9
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sorry, should have clarified...it's been 2,000 miles since the repair and it has been running/shifting great since the repair. Yes, Rick installed the B2.
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1983 300D 218K miles |
#10
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Sweet. How much did it set you back? It's a relief knowing he can do it successfully, as I may have to do the same you never know. My car shifts well now w/ a slight flare from 2-3.
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'02 BMW 325i '85 300D 450k '93 190E 2.6 170k(killed by tree) '08 Ducati Hypermotard 1100S 6k '06 Ducati S2R800 14k(sold) |
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sent you a PM.
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1983 300D 218K miles |
#12
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My '83 300D has the exact same symptoms. It happened while I was sitting at a red light. Will not engage in first without revs and feathering the throttle, shifts and runs fine once it makes that first shift. Pulled some fluid and put in some Trans-X without success. Will definetly check out the B-2 piston. Thanks for the thread, I hope it gets me on the right track.
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1983 300D Silver -mine- 185,000 w/ donor transmission 1983 300D Gray (Franklin) -parts car- 180,000- no transmission and no oil pan 1994 S320 Silver -wife's-135,000 |
#13
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Yup, it was the B2, new parts will be here tomorrow. This pile of parts was one contained unit at one time. Definetly a catastrophic failure of the B2. I remember hearding a pop when it put it in park when I got to the store. Amazing I could hear it in the passanger compartment with the engine running.
THANKS!
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Adam Lumsden (83) 300D Vice-President of the MBCA International Stars Section Last edited by rg2098; 04-26-2005 at 06:29 PM. |
#14
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For the record, it was not that difficult to do,
1)remove engine shock mounts 2)remove engine mounts and lower engine until resting on body 3)remove rear transmission mount 4)proceed with removing the B2. I was able to get plenty of clearence with all the mounts out.
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Adam Lumsden (83) 300D Vice-President of the MBCA International Stars Section |
#15
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Quote:
__________________
Michael LaFleur '05 E320 CDI - 86,000 miles '86 300SDL - 360,000 miles '85 300SD - 150,000 miles (sold) '89 190D - 120,000 miles (sold) '85 300SD - 317,000 miles (sold) '98 ML320 - 270,000 miles (sold) '75 300D - 170,000 miles (sold) '83 Harley Davidson FLTC (Broken again) :-( '61 Plymouth Valiant - 60k mikes 2004 Papillon (Oliver) 2005 Tzitzu (Griffon) 2009 Welsh Corgi (Buba) |
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