Re: [MBZ] 240D Differential
On Sun, 20 Nov 2005 11:39:49 -0500 Mitch Haley [EMAIL PROTECTED] wrote: If the diff has homokinetic axles, it may be possible for the diff to shift out of position internally while bringing it home with both axles removed. I'm not sure if that's a problem with mbz diffs, but with many FWD cars you are supposed to remove the axles one at a time, or put a special tool in (basically a plastic rod the size of an axle stub) before removing the 2nd axle. When I was busy converting our car, I had a differential sans axle shafts sent from Dallas to Austin and then took it to a local Indy to get the seals replaced without any special considerations. In addition, the precautions you mention above are not even considered in the MB shop manual. Craig
Re: [MBZ] 240D Differential
Russ, I've got a 240D differential. It is buried in the garage. I'd have to dig it out. Let me know offline if you are interested. [EMAIL PROTECTED] At 09:30 PM 11/20/2005, you wrote: Hi Gang, My wife's '83 240D has developed a LOUD Growling in the differential. When I bought the car the PO had taken it to an IDIOT that didn't know crap about MB tranny's. It was shifting sluggishly. Instead of doing a filter and fluid change. He proceeded to remove all the Vacuum lines off the controller on the valve cover then re plumb the Tranny line directly to the VP line. I Finally got the Tranny issues straighten out, still not quite right but I'm getting it there. About a month after we got it the Diff. started to make noise after long runs, She drives 220 miles a day mostly at 60+ mph. So I changed the Diff. lube with Mobil 1 gear oil. That was the first of the month. Last week I drove it for the first time since the fluid change, Yes I did give it a good work out when I did the change No Noise. Well the Noise was back. I asked my wife when it started making the noise again. She said 2 days. Thursday I get a call from her Stating it had gotten so bad she was afraid to drive it back home unaccompanied. So I met her and followed her home. 2 hour drive at 35mph. Grrr. When I got it home I took a spin in it. Get it over 30 the noise starts above 40 it is BAD sounds like the Diff. is about to come apart. I know it's not the Half shafts. Put it on my Indys lift. We put it thru the paces. He says that it's the Diff. So it looks like I get to change it out this week while wifey is off of school. What I need to know from the Great Minds of this Great List is if I can't find a Diff. from a 240D Auto car will one from a 300D (123) or 240D Manny Tranny work i.e. What are the Gear Ratio's? I know that one PnP has 4 300D's in stock. Missed out on a 240D at another PnP, they got rid of it 2 weeks ago Grrr. Any tips on the RnR from anybody that has done this before. TIA Russ W. '83 240D Manny (His) '83 240D Auto (Hers) ___ 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] 240D Differential
Most economical solution is a used replacement. Marshall -- Marshall Booth (who doesn't respond to unsigned questions) der Dieseling Doktor [EMAIL PROTECTED] '87 300TD 182Kmi, '84 190D 2.2 229Kmi, '85 190D 2.0 161Kmi, '87 190D 2.5 turbo 237kmi
Re: [MBZ] 240D Differential
Thanks for the pictures Craig. Was the Gear Ratio for the 300D the same as the 240D? If not how did it change your fuel mileage or acceleration? Russ W. Craig McCluskey wrote: On Sun, 20 Nov 2005 21:30:28 -0600 Russ Williams [EMAIL PROTECTED] wrote: Any tips on the RnR from anybody that has done this before. Pictures attached (but not to list email) of axle half-shaft change. Changing the diff is trivial with both half-shafts out, just disconnect the driveshaft and unbolt the (four?) bolts that hold the diff to the subframe. I don't recall if I kept the 240D diff from our car when I changed the diff to a 300D diff. Craig
Re: [MBZ] 240D Differential
On Mon, 21 Nov 2005 00:15:31 -0600 Russ Williams [EMAIL PROTECTED] wrote: Thanks for the pictures Craig. Was the Gear Ratio for the 300D the same as the 240D? No. IIRC, the 240D diff is 3.69:1 and the 300D diff is 3.46:1. If not how did it change your fuel mileage or acceleration? The lower acceleration inherent in a lower ratio is offset by the 300D's extra piston. The 300D turns slower at Interstate speeds (75 mph here in New Mexico) and, ostensibly, has a higher top end (though I haven't tried that out). Fuel economy is running about 23.5 mpg -- not as good as I'd like it but tolerable. Craig
Re: [MBZ] 240D Differential
Thanks for the offer Loren. Let me see what I can find locally. I need to get this thing back on the road by next Monday when wifey goes back to her teaching job. Russ W. Loren Faeth wrote: Russ, I've got a 240D differential. It is buried in the garage. I'd have to dig it out. Let me know offline if you are interested. [EMAIL PROTECTED] At 09:30 PM 11/20/2005, you wrote: Hi Gang, My wife's '83 240D has developed a LOUD Growling in the differential.
Re: [MBZ] 240D Differential
Loren Faeth wrote: Russ, I've got a 240D differential. It is buried in the garage. I'd have to dig it out. Let me know offline if you are interested. I've got one too, from an auto W123. IIRC, all W123 240D have the same 3.69 diff. If the 300D has a 3.46, that's only 7% taller, probably not enough to notice in driving, but enough to make you want to grab the speedo/odo out of the donor car. I believe most of the turbos have 3.07, which might make the wife's car a bit sluggish off the line. (but at least she's got a torque converter to make up for it. I'm not sure, but it seems like the 1985 300Dt had a high stall torque converter and a 2.xx diff, you do not want that in a 240d. Mine has the plug-in axles (annular?), not the bolt-on, so I'd have to drain the diff, remove the axles, and find something to hold the spider gears straight in shipping. With bolt-on axles, if the seller is willing to let you have the axles stubs, they can ship the diff sealed with the axle stubs installed. What's local for Russ? I'm in Michigan.
Re: [MBZ] 240D Differential
Thanks Mitch, That's what I needed to know. I'm in Louisiana south of Baton Rouge. I'll be calling all the PnP around here to see if any have a 240D with an Annular Diff. Russ W. Mitch Haley wrote: Loren Faeth wrote: Russ, I've got a 240D differential. It is buried in the garage. I'd have to dig it out. Let me know offline if you are interested. I've got one too, from an auto W123. IIRC, all W123 240D have the same 3.69 diff. If the 300D has a 3.46, that's only 7% taller, probably not enough to notice in driving, but enough to make you want to grab the speedo/odo out of the donor car. I believe most of the turbos have 3.07, which might make the wife's car a bit sluggish off the line. (but at least she's got a torque converter to make up for it. I'm not sure, but it seems like the 1985 300Dt had a high stall torque converter and a 2.xx diff, you do not want that in a 240d. Mine has the plug-in axles (annular?), not the bolt-on, so I'd have to drain the diff, remove the axles, and find something to hold the spider gears straight in shipping. With bolt-on axles, if the seller is willing to let you have the axles stubs, they can ship the diff sealed with the axle stubs installed. What's local for Russ? I'm in Michigan. ___ 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] 240D Differential
Mitch Haley wrote: I've got one too, from an auto W123. IIRC, all W123 240D have the same 3.69 diff. If the 300D has a 3.46, that's only 7% taller, probably not enough to notice in driving, but enough to make you want to grab the speedo/odo out of the donor car. I believe most of the turbos have 3.07, which might make the wife's car a bit sluggish off the line. (but at least she's got a torque converter to make up for it. I'm not sure, but it seems like the 1985 300Dt had a high stall torque converter and a 2.xx diff, you do not want that in a 240d. Remember that the differential (and transmission) ratio is calculated to match the peak engine power to achieve maximum highway speed (recall the discussions about most Mercedes 5 speeds being faster in 4th rather than 5th). If you drop the differential ratio, (say from 3.69 to 3.46) that will reduce the top speed of the car - probably only by 4-5 mph or so, but it WILL almost surely drop it. It may alter economy too, but to say for sure which way fuel consumption will go is not always clear. That will depend on driving speeds and load. Mercedes really did a pretty good job of getting the car to run just right with the engine/transmission/differential they used. Marshall -- Marshall Booth (who doesn't respond to unsigned questions) der Dieseling Doktor [EMAIL PROTECTED] '87 300TD 182Kmi, '84 190D 2.2 229Kmi, '85 190D 2.0 161Kmi, '87 190D 2.5 turbo 237kmi
Re: [MBZ] 240D Differential
Russ Williams wrote: I'll be calling all the PnP around here to see if any have a 240D with an Annular Diff. Two things I should mention: 1. I got it backwards, the homokinetic are the ones I have, that slide into the diff and are retained with giant c-clips. The annular have removeable drive flanges that slide into the diff and are retained with the same clips, then the axle bolts to the drive flange. 2. The diffs are identical, regardless of the axles currently mounted to them. If the diff has bolt-on axles, unbolt the axles, and the PP will probably let you have the drive flanges with the diff. When you get home, you can open it up and get rid of the flanges if you don't need them. If the diff has homokinetic axles, it may be possible for the diff to shift out of position internally while bringing it home with both axles removed. I'm not sure if that's a problem with mbz diffs, but with many FWD cars you are supposed to remove the axles one at a time, or put a special tool in (basically a plastic rod the size of an axle stub) before removing the 2nd axle.
