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  #1  
Old 03-29-2010, 06:49 PM
otto huber's Avatar
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Location: Alameda California
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240D transmission/flex disc issue

I'm going to replace the flex disc and transmission yoke on my friends '79 240D(4spd manual). The disc failed and damaged the yoke a few weeks ago. With the drive shaft unattached, I took a look under the car to make sure everything looked okay, and that the yoke he purchased would fit. Everything looked good, but I was curious to see if the transmission would slip into the different gears with the engine running. Even though he was only travelling 30 mph when it failed, he said it was a pretty ugly sounding breakdown that killed the engine.
After taking the car off of it's jack stands, I started the car and put the transmission through all the gears. Unfortunately, when the car was in neutral, the speedometer started to climb as I revved the engine, meaning that the transmission is still engaged. I didn't have time to get back under the car and check the linkage, but my fear is that the flex disc failure did some serious damage to the transmission. Has anyone heard stories of flex disc failure doing serious harm to a transmission? What else should I do before I get under there and replace the flex disc and yoke? Thanks
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Old 03-29-2010, 09:14 PM
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When I bought my 240 the PO had blown the front flex disc going about 35mph. It destroyed the shifter linkages, and bent up the trans mount, as well as dinged up the yoke, but not too badly. I wouldn't be surprised if the linkages are bent and not really getting the trans out of gear. I also notice on mine when I had the car up on stands and running with the driveshaft disconnected that the yoke on the trans would spin even in neutral. So I wouldn't be too worried about it just yet. I've been driving the car for nearly 50k miles since I fixed it all, and the trans is still running strong.
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Old 03-30-2010, 07:17 PM
otto huber's Avatar
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Thanks Bio,

I hope that we have as much success as you did.
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