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#1
03-17-2006, 04:32 PM
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82 300SD 722.3 Tranny Problems Help!
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I have a 1982 300SD with a 4 speed automatic transmission. I have had the car for a little over 2 years with no transmission problems, no slippage or anything out of the ordinary. Last week I was stopped at a stop sign and waited for traffic to clear, when it was safe to go, I stepped on the accelerator and I felt like something in the transmission let go, like a little pop, hardly noticeable, and I had no more forward gears. I still have reverse, but no forward gears whatsoever. I've done a search on the forum and have found some very good suggestions. One is to check for the commonly known B2 Piston failure. I've removed the B2 Piston and it looks fine even though it looks like it's an older B2 piston. The sleeve is black plastic with a thin metal ring on the inside of the sleeve not like some of the other plastic sleeves I've seen on some posts. Now that I've checked that piston does anyone have any other suggestions what else I could check? Is the B1 piston known to fail as well? Help!! Any help is appreciated...  
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"Life", is the art of drawing, without an eraser. 
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#2
03-17-2006, 05:22 PM
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How about the band that the B2 piston operates?
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MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator
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#3
03-17-2006, 06:28 PM
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Where is it located? Do I have to take anything off to see it? All I can see operate the B2 piston is I'm not sure what to call it but looks like a slide of some sort?? I should post a picture of it I guess...but I can't see where the band is..
__________________
"Life", is the art of drawing, without an eraser.
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#4
03-17-2006, 06:53 PM
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M.B.Doc I only have removed the pan and the tranny filter. Do I have to remove any more parts to see the B2 band? How do you add pics in this comment box??
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"Life", is the art of drawing, without an eraser. Last edited by wildrose196812; 03-18-2006 at 11:10 PM. Reason: Add Pics
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#5
03-23-2006, 11:26 AM
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Good Diagnosis M.B. DOC
Yes, you were correct DOC, the B2-band was broken.. Now to pull out the tranny and send it out to a tranny shop to have the B2-band replaced. Should I have them look at replacing anything else while they are in there, besides the B2-piston?
__________________
"Life", is the art of drawing, without an eraser.
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