Re: [MBZ] Bouncing upon shift
You must get the engine rpm closer to the tranny rpm when shifing. MB diesels are notorious for bouncing neophyte drivers faces off the steering wheel! Slower clutch engagement or a bit more right foot will take care of the problem. I would, however, check (or just replace) the tranny mount and inspect the diff mount and the center carrier -- hard shifting will cause excessive wear on those parts. Probably not a bad idea to check the engine mounts as well -- if not replaced, probably flat by now. Peter
Re: [MBZ] Bouncing upon shift
Zoltan Finks wrote: Not a desperately important question, I know, just wondering if anyone has experienced this, and if it indicates something worn out (like tranny mount)? It's seems to be a general bouncing of the drivetrain or frame that works its way through for 2 or 3 seconds. Try feathering the accelerator between shifts to match the engine revs to the rest of the drivetrain. -- John L. Ervine 1981 240D 4-spd 270+kmi 1980 300TD 175+kmi 1980 300SD 277+kmi 1977 280S 4-spd 81+kmi 1976 350SE 4-spd 163+kmi
Re: [MBZ] Bouncing upon shift
Thanks. I sort of figured after I sent the question that it would be assumed that less-than-optimal shifting was the culprit. I'm not sure that's the case though - it just feels like there isn't sufficient rigidity in the drivetrain to accept what (I think, at least) is an acceptably smooth and efficient shift. But I could very well be wrong. Will play around with it. Getting the wife to do so is another matter again. Brian On 4/27/06, John Ervine [EMAIL PROTECTED] wrote: Zoltan Finks wrote: Not a desperately important question, I know, just wondering if anyone has experienced this, and if it indicates something worn out (like tranny mount)? It's seems to be a general bouncing of the drivetrain or frame that works its way through for 2 or 3 seconds. Try feathering the accelerator between shifts to match the engine revs to the rest of the drivetrain. -- John L. Ervine 1981 240D 4-spd 270+kmi 1980 300TD 175+kmi 1980 300SD 277+kmi 1977 280S 4-spd 81+kmi 1976 350SE 4-spd 163+kmi ___ http://www.striplin.net For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net
Re: [MBZ] Bouncing upon shift
Zoltan Finks wrote: Another question: in my 83 240D, I notice that when I shift to second and let out the clutch expediently (not dumping it though) I feel this forward and rearword sort of bouncing of the vehicle - sort of feels like some big pickups do that tend to have frame-bounce, only this is fore and aft. It's annoying, especially with the nice springy seats. Not a desperately important question, I know, just wondering if anyone has experienced this, and if it indicates something worn out (like tranny mount)? It's seems to be a general bouncing of the drivetrain or frame that works its way through for 2 or 3 seconds. I expect that something has collapsed, is worn or loose. Perhaps the differential mount(s) or the center bearing mount. Could even be the flex disc or the bolts that secure them. The entire engine and driveline from front to rear is isolated in rubber and any bit of that rubber that's more than 10 years old isn't working the way it was intended to work. Some of that is tolerable to me, but it's NOT the way the designers intended the car to be. Marshall -- Marshall Booth (who doesn't respond to unsigned questions) der Dieseling Doktor [EMAIL PROTECTED] '87 300TD 182Kmi, '85 190D 2.0 161Kmi, '87 190D 2.5 turbo 237kmi, '84 190D 2.2 229Kmi (retired)
