Re: [MBZ] Cyclical vibration
Dieselhead wrote: Does it change if you let up on the go pedal? If so and if it is related more to road speed than engine RPM, then I'd guess driveshaft. Someone may have taken the driveshaft apart and not put it back the right way. There are 38 wrong ways and only one right way it goes back together if someone takes the slip joint apart. Simplest fix is to buy a used driveshaft. KALEB! do you have one for sale? Very good point. I believe he said something about the flex disks and carrier bearing being replaced. If the person who did that work misaligned the drive shaft halves... Mitch. OR if the rubber mount was not replaced, or was replaced with a uro one Had that on a 126... new rubber was too soft, and allowed the driveshaft to gyrate in the opening. THe original one was chewed up, so I had to get a new one. ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Cyclical vibration
Flex disk failure from the description. I have not found the OM617 to cause a vibration unless it has eaten the engine mounts and trans mounts. But you feel that at idle, not speed. clay On Jun 17, 2013, at 6:16 PM, DC Nichols wrote: > Hi all, new member here and new owner of an 84' 300D. Being brand new to > these cars I don't have a point of reference. > > I have a cyclical rumble felt in the seat from about 30mph up. It occurs > primarily when engine is under load (accelerating or maintaining speed up a > hill). Its about one second on, one off. Seems like it might get slightly > faster with speed. It's not terribly annoying but would like to fix it if > possible. > > Flex discs and carrier bearing look good. Both have about 80k. New engine and > trans mounts. Transmission has about 80k miles on it. One new axle half > shaft. One old one but boots are intact. Driveshaft has one weight on it that > I could find. > > Someone told me this is the natural vibes of a straight 5 cylinder. Not sure > if i believe that. Thanks in advance for any help you can offer. Also, can > anyone recommend a good w123 mechanic in the Norman, Moore, Okc area? > > Thanks, > Daniel > ___ > http://www.okiebenz.com > For new and used parts go to www.okiebenz.com > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Cyclical vibration
Dieselhead wrote: Does it change if you let up on the go pedal? If so and if it is related more to road speed than engine RPM, then I'd guess driveshaft. Someone may have taken the driveshaft apart and not put it back the right way. There are 38 wrong ways and only one right way it goes back together if someone takes the slip joint apart. Simplest fix is to buy a used driveshaft. KALEB! do you have one for sale? Very good point. I believe he said something about the flex disks and carrier bearing being replaced. If the person who did that work misaligned the drive shaft halves... Mitch. ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Cyclical vibration
> DC wrote: I have a cyclical rumble felt in the seat from about 30mph up. It occurs primarily when engine is under load (accelerating or maintaining speed up a hill). Its about one second on, one off. Seems like it might get slightly faster with speed. It's not terribly annoying but would like to fix it if possible. Someone told me this is the natural vibes of a straight 5 cylinder. Not sure if i believe that. It is not normal. At least, I have never felt it on any of the half-dozen or so OM-617s I've driven. Is it engine or road speed related? That is, in 2nd gear does it do it at the same RPM or same MPH as when it's in 3rd gear? -- Philip Does it change if you let up on the go pedal? If so and if it is related more to road speed than engine RPM, then I'd guess driveshaft. Someone may have taken the driveshaft apart and not put it back the right way. There are 38 wrong ways and only one right way it goes back together if someone takes the slip joint apart. Simplest fix is to buy a used driveshaft. KALEB! do you have one for sale? ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Cyclical vibration
> DC wrote: > > I have a cyclical rumble felt in the seat from about 30mph up. It > occurs primarily when engine is under load (accelerating or > maintaining speed up a hill). Its about one second on, one off. > Seems like it might get slightly faster with speed. It's not > terribly annoying but would like to fix it if possible. > Someone told me this is the natural vibes of a straight 5 > cylinder. Not sure if i believe that. It is not normal. At least, I have never felt it on any of the half-dozen or so OM-617s I've driven. Is it engine or road speed related? That is, in 2nd gear does it do it at the same RPM or same MPH as when it's in 3rd gear? -- Philip ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Cyclical vibration
Does it sound/feel different when you go around turns? I'm thinking about front wheel bearings. My first 240D had a rumbly grumbly when I first got it that my Indy couldn't seem to hear. I finally got him to do the front wheel bearings and it fixed it. -Curt Date: Mon, 17 Jun 2013 20:16:30 -0500 From: DC Nichols To: "mercedes@okiebenz.com" Subject: [MBZ] Cyclical vibration Message-ID: <55bd4011-b2b5-4889-a77f-164f8f60e...@yahoo.com> Content-Type: text/plain; charset=us-ascii Hi all, new member here and new owner of an 84' 300D. Being brand new to these cars I don't have a point of reference. I have a cyclical rumble felt in the seat from about 30mph up. It occurs primarily when engine is under load (accelerating or maintaining speed up a hill). Its about one second on, one off. Seems like it might get slightly faster with speed. It's not terribly annoying but would like to fix it if possible. Flex discs and carrier bearing look good. Both have about 80k. New engine and trans mounts. Transmission has about 80k miles on it. One new axle half shaft. One old one but boots are intact. Driveshaft has one weight on it that I could find. Someone told me this is the natural vibes of a straight 5 cylinder. Not sure if i believe that. Thanks in advance for any help you can offer. Also, can anyone recommend a good w123 mechanic in the Norman, Moore, Okc area? Thanks, Daniel ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Cyclical vibration
I have a cyclical rumble felt in the seat from about 30mph up. It occurs primarily when engine is under load (accelerating or maintaining speed up a hill). Its about one second on, one off. Driveline frequency, or wheel? The former is about 3x the latter. Has the driveline been removed/operated upon by the unworthy, perhaps misaligning the halves? Lotsa rubber that can be replaced under there that might affect this. -- Jim ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Cyclical vibration
It's been my experience that the first thing to check when one has any kind of vibration is tires. Sometimes one can feel a tread separation just by carefully feeling for it on each tire. The next thing is to jack up each end of the car and lay a straight edge on a block close to the tread and slowly turn the wheel. After that, rotating the tires front to back can be diagnostic if that changes the frequency/interval of the vibration. If so, take the car to a good tire shop for rebalancing and professional checks. If no luck after that, then I check the tie rod ends and other parts of the front end for looseness. Also check the wheel lugs for looseness. I put a large pipe wrench on the drive shaft and twist it while closely looking at the flex discs for cracks in the rubber. I make sure and put the pipe wrench close to the ends of the drive shaft links so the drive shaft "tube" won't be deformed. The rubber mount for the carrier bearing should be moveable but not loosely moveable. If none of that is diagnostic, then perhaps some of the real pros on this list can suggest more serious problems to look for. Gerry '83 300D '83 240D Hi all, new member here and new owner of an 84' 300D. Being brand new to these cars I don't have a point of reference. I have a cyclical rumble felt in the seat from about 30mph up. It occurs primarily when engine is under load (accelerating or maintaining speed up a hill). Its about one second on, one off. Seems like it might get slightly faster with speed. It's not terribly annoying but would like to fix it if possible. Flex discs and carrier bearing look good. Both have about 80k. New engine and trans mounts. Transmission has about 80k miles on it. One new axle half shaft. One old one but boots are intact. Driveshaft has one weight on it that I could find. Someone told me this is the natural vibes of a straight 5 cylinder. Not sure if i believe that. Thanks in advance for any help you can offer. Also, can anyone recommend a good w123 mechanic in the Norman, Moore, Okc area? Thanks, Daniel ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com -- OK Don 2013 F150 2012 Passat TDI DSG 1957 C182A ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2242 / Virus Database: 3199/5933 - Release Date: 06/23/13 ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Cyclical vibration
Welcome to the group! I would suspect the flex disks or carrier bearing even though they only have 80k on them. There are no "natural vibes" that haven't been dampened by MB - that should be one smooth running car. I used to live in Norman, but the only decent MB wrench that I know has since gone to that great MB achive in the sky (RIP), sorry. On Mon, Jun 17, 2013 at 8:16 PM, DC Nichols wrote: > Hi all, new member here and new owner of an 84' 300D. Being brand new to > these cars I don't have a point of reference. > > I have a cyclical rumble felt in the seat from about 30mph up. It occurs > primarily when engine is under load (accelerating or maintaining speed up a > hill). Its about one second on, one off. Seems like it might get slightly > faster with speed. It's not terribly annoying but would like to fix it if > possible. > > Flex discs and carrier bearing look good. Both have about 80k. New engine > and trans mounts. Transmission has about 80k miles on it. One new axle half > shaft. One old one but boots are intact. Driveshaft has one weight on it > that I could find. > > Someone told me this is the natural vibes of a straight 5 cylinder. Not > sure if i believe that. Thanks in advance for any help you can offer. Also, > can anyone recommend a good w123 mechanic in the Norman, Moore, Okc area? > > Thanks, > Daniel > ___ > http://www.okiebenz.com > For new and used parts go to www.okiebenz.com > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > -- OK Don 2013 F150 2012 Passat TDI DSG 1957 C182A ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
[MBZ] Cyclical vibration
Hi all, new member here and new owner of an 84' 300D. Being brand new to these cars I don't have a point of reference. I have a cyclical rumble felt in the seat from about 30mph up. It occurs primarily when engine is under load (accelerating or maintaining speed up a hill). Its about one second on, one off. Seems like it might get slightly faster with speed. It's not terribly annoying but would like to fix it if possible. Flex discs and carrier bearing look good. Both have about 80k. New engine and trans mounts. Transmission has about 80k miles on it. One new axle half shaft. One old one but boots are intact. Driveshaft has one weight on it that I could find. Someone told me this is the natural vibes of a straight 5 cylinder. Not sure if i believe that. Thanks in advance for any help you can offer. Also, can anyone recommend a good w123 mechanic in the Norman, Moore, Okc area? Thanks, Daniel ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
