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#1
09-21-2007, 01:17 AM
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what goes "clunk" when i shift into gear (manual trans 240d)?
i get a "clunk" when i shift into gear and i can feel play (a tug or a seesaw effect that i can feel in the shifter when i go over a bump or let off the gas suddenly). would that be a transmission mount or something else? thanks.
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#2
09-21-2007, 05:29 AM
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Sounds like it. Maybe engine mounts too, could also be flex donut or center bearing on driveshaft.
YOu need to get under the car and start wiggling things. Tom W
__________________
[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
09-21-2007, 09:22 AM
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any vibration in the shifter when you drive?
If so - check your flex disk from the tranny to the drive shaft.
Motor Mounts / transmission mount would be the first thing I'd check. Time to investigate!
__________________
~shell As of 2/2010: 2001 CLK55 0o\=*=/o0 13.6 @ 106mph 10K mi 1984 300SD 260K mi and going and going... 97 S600 46K miles 1991 Sentra SE-R (extremely dorked with) www.se-r.net
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#4
09-21-2007, 09:29 AM
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is this a new clunk? most manual trans unless they are really new with nice strong syncros will make a gear engagement clunk. the movement does sound like worn mounts. don't overlook the center bearing if your car has one. *(on the drive shaft)
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!!  1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#5
09-21-2007, 09:43 AM
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If the mount, flex disks or center bearing bushing have issues (cracking excessive movement etc) they should be replaced immediately. Any of them can lead to busted flex disks and that can kill.
__________________
http://superturbodiesel.com/images/sig.04.10.jpg 1995 E420 Schwarz 1995 E300 Weiss #1987 300D Sturmmachine #1991 300D Nearly Perfect #1994 E320 Cabriolet #1995 E320 Touring #1985 300D Sedan OBK #42
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#6
09-21-2007, 11:03 AM
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replaced motor mounts a week ago and it helped a bunch (idle is silky smooth now and noise is down to nothing) but i can still feel the play. i'm going to do the trans mount next and from what i understand it is simple to go ahead and replace the flex disc. so i should replace the donut as well? what do i wiggle and where would "play" be in order for me to try to identify potential problems? what is the difficulty level of replacing the center bearing? any special tools? thanks all.
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#7
09-21-2007, 04:59 PM
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check your diff for play also, and the u-joint.
__________________
Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac? As long as they would add one additional commandment for you to keep thy religion to thyself. George Carlin (Wonder where he is now..) 1981 240d (engine donor 1983 240d) recently rebuilt engine hurray! - No more.. fought a tree and the tree won. pearl black 1983 240d 4speed (Converted!@$$%) atleast the tranny was rebuilt.
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