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#1
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W123 drive shaft
I was trying to unbolt the drive shaft from the rear of the transmission, and then pry it back. Well, it won't move back at all. I read about loosening the nut on the drive shaft. I don't have the two wrenches I have read about one 41mm & the other 46mm. I have checked around, and I didn't come up with any. What other options will help moving the drive shaft enough to get the transmission out? If you unbolt the differential end will it lift up there so you can possibly pull it back, and not be confronted with the nut on the drive shaft?
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Rebe |
#2
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Is the flex disc simply stuck to the yoke? Or have you separated the flex disc and the driveshaft still won't move? If it's the second, you can unbolt the center support from the body of the car and it will help it move even without loosening the drive shaft nuts.
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1979 300D 040 Black on Black - 1985 300D Maaco job (sadly sprayed over 199 Black Pearl Metallic) on Palamino http://i.imgur.com/LslW733.jpg The Baja Arizona Oil Burners Send a message if you'd like to join the fun Left to Right - UberWasser, Iridium, Stuttgart-->Seattle,, mannys9130 Visit the W123 page on iFixit for over 70 helpful DIY guides! |
#3
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I use a very large pair of Channelocks with the trans in park to loosen/tighten the nut.
Uberwasser is correct. But I've never worked on a driveshaft where I couldn't slide the splines with some prying force, even with the nut tightened.
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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?" |
#4
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The 2 that I've removed (300SD and 240D) I dropped the center support which makes clearance for the front yoke to slide rearward. Mine both took a significant pry as the flex disc was well and truly stuck on its centering pin. I had to work my way around the circumference of the disc and work it rearward.
I still have both those driveshafts if anyone wants them - I can't speak to their condition. Dan |
#5
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^^^ this is the method I use when pulling trannys. You'll need to also unbolt the center support bearing to be able to move it back a bit.
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1983 123.133 California - GreaseCar Veg System |
#6
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What I have done so far was to unbolt the driveshaft where it mates to the flex disc(three bolts). I didn't take the bolts out of the flex disc on the back side of the transmission. I is kind of hard to do any prying there because I only found the bolt heads on the flex disc to pry the driveshaft yoke to. It's awkward and I didn't think I was able to get much pressure there to push the driveshaft back! The bolt on the transmission must be torqued tightly or the driveshat collar on the tail shaft spleens is stuck tightly!
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Rebe |
#7
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I used a Chain Type Pipe Wrench to loosen the Collar Nut. It was not on tight.
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84 300D, 82 Volvo 244Gl Diesel |
#8
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Quote:
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1983 123.133 California - GreaseCar Veg System |
#9
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I used a long pry bar on the driveshaft, against the crossmember with a block of wood. Slight taps on the shaft where it slides to free it up.
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#10
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Help was much appreciated. I was able to loosen the driveshaft nut, and I turned it a couple of turns. It didn't move back even then by a screwdriver like some posts claimed. I did some more reading on the posts here about the tabs. That is when I was able to free it up and move it back out of the way!
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Rebe |
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