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#1
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How much movement should I have when sliding my front driveshaft back?
How much play or movement(front to back) should I have in the spline on the front driveshaft in my 420SEL? Mine is totally compressed, with nut loose,no movement to rear of car at all. Flex disc is unable to come loose even with carrier bearing loose. I've changed the engine in car, and am in process of bolting everything together.I feel I should have enough movement to allow flex disc to be removed . I think I need to shorten my driveshaft, but need to have an idea of how much.
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#2
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Um, 0.0
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#3
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Once the nut is completely relaxed, you should be able to compress the driveshaft far enough to clear the pilot bushing at the flex disk.
Occasionally, a good sized pry bar will encourage the driveshaft to move. Jim
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14 E250 BlueTEC black. 45k miles 95 E320 Cabriolet Emerald green 66k miles 94 E320 Cabriolet Emerald green 152k miles 85 300TD 4 spd man, euro bumpers and lights, 15" Pentas dark blue 274k miles |
#4
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Mine is totally compressed when in place, can get not get enough movement to get away from flex disc at all. Looks like I've got to do some more measuring and shorten my driveshaft a little, maybe about an inch?
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#5
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how do you know that the driveshaft is totally compressed?if the parts on the car are the same as the original that driveshaft will compress enough at the slip joint to enable you to remove or replace the flexdisc.suggest that you take off rear flex disc and carrier bearing and put complete shaft on the ground and take apart slip joint and lubricate well.you will find that it is jammed.check for balance marks on shaft and yoke,if not there mark it before you take it apart.
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David S Poole European Performance Dallas, TX 4696880422 "Fortune favors the prepared mind" 1987 Mercedes Benz 420SEL 1988 Mercedes Benz 300TE (With new evaporator) 2000 Mercedes Benz C280 http://www.w108.org/gallery/albums/A...1159.thumb.jpg |
#6
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New engine/trans is different from stock? If yes, then you may have a length issue (I get email about that all the time).
If same as stock engine/trans, sometimes the bushings in the flex disc are tight in the yoke. Factory manual says to insert a dowel to move around, free them up. If you can't get clearance to remove the front disc, your not going to have any for the rear either. Removing the carrier bearing bolts may give enough angle in the shaft to allow a bit more clearance. A little leverage as Jim suggested "should" be all it takes.
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Hanno '79 6.9 Sold (after 27 years) '83 280SL, 5 spd. '94 E320 Sdn. 5 spd conversion '02 E320 Sdn.(on loan to mom!) '87 300E (5 spd. conversion) Sold '05 E500 Wagon |
#7
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Engine is not stock, is 617 diesel from 300SD. I found that I need to shorten shaft 1", am working with Driveshaft Specialist Inc in San Antonio to remedy the problem. Fully rebuilt,shortened shaft is around $525, so will probably go that route. Thanks.
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