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  #1  
Old 06-11-2008, 05:58 AM
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transmission question , help please

could not sleep. these little diesel cars get into the brain and won;t go away. i have the opportunity to buy a nice little 83, 300D that has a basically dead automatic. it does work ok in reverse but in any of the three forward gears there is absolutely no response. i have searched and found that reconditioned or rebuilt trannys are available for somewhere in the 1200 $ range, have not or did not consider the torque converter but i certainly would if i got a rebuilt transmissioin. . . but the question im having is, is it possible that this is not as bad as it appears ? im mean, possibly a repair without taking the thing out and repolacing it ? and sadly enuf, last fall i scrapped one out that had a good tranny and a h.s. engine. of course its been in china already and probably returned as a yugo or something. . . .

the two biggest problems im having in my brain are:

1: im not in physical condition to do this myself anymore

2: im retired and living on a somewhat fixed income

they guy wants $1000 bucks for the car and the engine really sounds good but im reallly torn about getting way too much money in this little thing with no hope for recovery when the widow has the auction.

does anyone have some words of wisdom for this old guy ? ? ?

thanks much in advance,

davidh

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83 300D Alabama Beauty (Son's)
83 300D West Coast Rust Free that been abused
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  #2  
Old 06-11-2008, 06:28 AM
t walgamuth's Avatar
dieselarchitect
 
Join Date: Apr 2005
Location: Lafayette Indiana
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I don't know much about the automatic trannies, but for about the same money you can buy a used stick and convert it.

If this interests you we can fill in the details.

Tom W
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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  #3  
Old 06-11-2008, 06:28 AM
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This ain't the only Benz inna world....

Hi Guy,

Try Craigs list. E-Bay. Pay to have car checked out before you go to purchase. Check for other cars to buy. Look around your city. Many Benz cars are for sale in relative good condition just now cause of the diesel prices. Get a good or better car for the same money. Look to the south for a better car. Have an adventure via a trip to pick up a better car and vacation to boot. Several years ago, the wifey and I flew cross country to pick up a Benz. Still an excellent car. Had a wonderful trip going and coming home from the purchase of that car. Still laugh about the "risks" involved in going cross country in a old Benz. It it crapped out onna way home, was gonna burn beside the turnpike if needed be.

Regards,

Run-Em
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  #4  
Old 06-11-2008, 06:30 AM
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interesting ? you bet.. .. .. ..
$tukapa@cheqhet.net drop the $
davidh
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  #5  
Old 06-11-2008, 07:35 AM
Admiral-Third World Fleet
 
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Quote:
it does work ok in reverse but in any of the three forward gears there is absolutely no response.
Sounds like a B2 piston failure. Could be a $50 part DIY or simple mechanic repai. Do some research here on B2s.
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80 300SD (129k mi) 82 240D stick (193k mi)77 240D auto - stick to be (153k mi) 85 380SL (145k mi) 89 BMW 535i 82 Diesel Rabbit Pickup (374k mi) 91 Jetta IDI Diesel (155k mi) 81 VW Rabbit Convertible Diesel 70 Triumph Spitfire Mk III (63kmi)66 Triumph TR4a IRS (90k mi)67 Ford F-100 (??)
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  #6  
Old 06-11-2008, 08:24 AM
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Yea sounds like a B2 but its more like $200 for the parts.(I just did one)
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  #7  
Old 06-11-2008, 10:29 AM
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can't find anything by searching b2 . . .. .. please help ?
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  #8  
Old 06-11-2008, 11:10 AM
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The google search feature works better: http://www.peachparts.com/search.htm?cx=015238323195528004774%3A_wneywo5nvm&cof=FORID%3A9&q=B2+Piston&sa=Search#928
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  #9  
Old 06-11-2008, 01:38 PM
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thanks you folks for all the great information. i did buy the car this morning after reading about the valve. i'm a gambler i guess. its'll be delivered by roll-off tomorrow or friday. yea !!!!!!!!

i assume i will order this valve form our mercedes shop, along with the filter , etc. will check that tonite. i still need to work and make a living i guess.

man im excited. hot dog ! ! !
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  #10  
Old 06-11-2008, 09:56 PM
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If my '83 300D had a dead tranny, I'd be doing a manual swap. I could get the tranny and related parts from the local Pick N Pull, or just cannibalize my 240. My $.02
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  #11  
Old 06-12-2008, 01:16 AM
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Remove and physically inspect the b2 assembley before ordering. If it is bad you will see the problem. If not why spend the money? Hopefully it is the problem but there are no guarantees.
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  #12  
Old 06-25-2008, 08:55 PM
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well now ! the 300 is now finally on jack stands with the pan off the transmission. i have the printed instructions about how to take off the mount bolts and drop the tranny about 2 inches or so and then pry it over. sounds easy enuf. . .

i attempted to remove the four cross member to body bolts. ya rite. the internal, un-obtainable rusty threaded nuts broke loose from the body and of course they turn right along with the bolts. not just one, but all four. what next ? or am i trying to remove the wrong bolts ? if these are the ones that need to come off to lower the trans. and crossmember together then im basically screwed. cut the heads off the bolts, cut off or at least open up the side of the body caviety so i can remove the "nuts" or whatever they are and then replace the nuts with REAL nuts and flatwashers ?

now that im typing this, it sounds like the only way to do it short of burning off and replacing a couple parts of the body (frame) where the nuts need to be. that would NOT be a fun job at all. and besides its 85 with about 90 % humidity and the f$#@ mosquitos are hungry.

any other ideas that would be easier ?

haap please !
im too old for this crap !
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  #13  
Old 06-25-2008, 09:30 PM
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David;

Did you look at www.dieselgiant.com for his pictorial on replacing the B2 valve? I can't offer you any advice on the rusted bolts.

Where in NW Wisconsin?

John
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  #14  
Old 06-30-2008, 09:32 PM
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its apart finally, more help needed

tonite amongst all the mosquitos i was able to move the tranny like i was instructed using a wedge type portapower cylinder, and take the retaining ring off and pull the spring loaded side cover open and in my hand, then the related parts inside, including a double ended rod (ball ends). brought it into the shop and looked at it for a bit, then proceeded to remove the snap ring and pull the piston and sleeve out. . . i;ll be dammed. broken in small pieces. . . just like you guys said. how impressed am i ? totally !
however, inside the now large hole in the side of the transmission there is a rubber seal, that seals the cylinder part of what i just removed. its about a inch plus inside diameter. it appears that someone did not have it aligned properly when it was last installed and part of the outside thats suppose to be pressed into the bore, is hanging out. do you suppose that would also be a problem ? ? ? if so, how the heck can i just order that ? plus the b2 piston and plastic sleeve ? i would probably need a breakdown of the transmission to identify it or is my description good enuf for the average m.b. parts guy ?

i have a couple pictures of it i would be happy to share with anyone for an honest opinion. . . .

im pretty concerned about that seal. . .

all in all, this was quite an easy take-apart for what its worth. . . im getting anxious to take it for a ride. . .
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  #15  
Old 07-01-2008, 07:34 AM
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bump

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