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#1
06-23-2014, 11:36 PM
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Uh Oh! Loose Yoke on Trans Output Shaft
I dropped the drive shaft on my '81 300TD to replace the intermediate bearing/bushing and the flex discs and noticed that the flange on the trans output shaft is very loose. More loose rotationally rather than end play (although this a little), but something is definitely bonkers.
I've ordered the tool for the nut, but I need to know what to expect when I get the flange off. What usually wears here--the flange female or the output shaft male? I'm wondering if I'm looking at a buggered transmission or just a worn yoke. Thanks for your help.
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1981 300TD 310k miles 1970 280sel 172k miles 1966 230 Fintail 162k miles "Where are we going? And why am I in this hand basket?" Last edited by Carpenterman; 06-24-2014 at 12:25 AM. 
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#3
06-24-2014, 09:31 AM
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The holes in the flange are fine.
Also, can anyone confirm that tool M0032 is the correct one for the 722.315 transmission with the slotted nut? Sir Tools M0032 Mercedes Pin Wr Socket The description does not list an application for this trans, but my research seems to indicate that this tool works. Yes, I know that the nut can be chiseled or punched off but there is not room with the trans in the car.
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1981 300TD 310k miles 1970 280sel 172k miles 1966 230 Fintail 162k miles "Where are we going? And why am I in this hand basket?"
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#4
06-24-2014, 11:42 AM
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The easiest way to be sure is to measure the diameter of the slotted nut. Other sites show the M0029.
Transmision, Specialty Auto Tool Rentals Mercedes Tools - Mercedes Benz Special Tools & Repair Information-Tool The M0029 is 38mm in diameter and the M0032 is 42.5mm in diameter
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Sam 84 300SD 350K+ miles ( Blue Belle )
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#5
06-24-2014, 12:47 PM
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I am not sure if it is on the Transmission End or the Pinion shaft end but one of the Members said that the Replacement Nut uses a 12 point Socket. The though was to forget about ordering the Tool and use a Punch to knock the Slotted Nut around and remove it.
I don't know if that would apply in your case. You could look up a new Nut at your favorite Internet parts Seller and see if it is a 12 Point Nut or not.
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84 300D, 82 Volvo 244Gl Diesel
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#6
06-24-2014, 01:12 PM
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I searched on Pelican and a couple other sites and don`t see the out put shaft Nut listed.
I had the manual transmission Flange loose on our 80 240D. It had a lot of sideways slop. My iIdy loaned me his Socket to remove the nut. Didn`t pay any attention as to which Socket it was. I did order the Nut (I think) here from pelican Parts. I pulled the flange off, and it was the Splines in the flange that were worn to a point. The out put shaft of the trans was in good shape. I think the Shaft is a harder metal than the Flange, so maybe that is why it had the wear. I pulled a Flange off a spare Transmission that was in good shape, and swapped it on with the new Nut. Charlie
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there were three HP ratings on the OM616... 1) Not much power 2) Even less power 3) Not nearly enough power!! 240D w/auto Anyone that thinks a 240D is slow drives too fast. 80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works
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#7
06-24-2014, 01:51 PM
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I appreciate all the help, guys. I took SDBlue's suggestion and measured the nut. The trans output is the M0032 and the diff input is the M0029.
Goofy, huh? I thought about chiseling/punching the nut off, but there's not much room with the trans in the car. I'm going to have to pull the flange from my parts car and naturally it's the 30mm 12 point, so I get to add even another tool to my dusty collection of hardly used Mercedes tools. I read your thread earlier, Charlie, so I'm hoping (like you) it's just the flange that's worn. That "not a big problem" driveline vibration I've had for the last couple of months, has turned out to be a big problem. The intermediate carrier bushing was halfway torn, although the flex discs, while hard and starting to show cracks, were intact. The universal had the expected hitch, but was tight. According to my records, the discs and bushing were original to the car. Not too bad for 33 year-old rubber.
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1981 300TD 310k miles 1970 280sel 172k miles 1966 230 Fintail 162k miles "Where are we going? And why am I in this hand basket?"
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#8
06-24-2014, 01:54 PM
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If I were you I would not buy one of those pronged sockets. The replacement nuts are now 12 point 30 mm
Hammer the old nut off with a punch and chuck it away.
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1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior  Don't leave that there - I'll take it to bits!
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#9
06-24-2014, 07:05 PM
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Loose more than the free play of the parking pawl?
With the trans in park, rotate the flange in one direction, look at / mark the nut relative to the flange. Rotate flange in the opposite direction and look at the mark, if they have moved, the flange splines are worn. If not this is likely normal parking pawl free play. Others have had issues where the flange strips out leaving the car non drivable. Splines on shafts are hardened where internal splines ( flanges ) generally are not.
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#10
06-25-2014, 11:30 AM
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Quote:
Quote:
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1983 123.133 California - GreaseCar Veg System 
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