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  #1  
Old 07-11-2019, 09:56 PM
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Dieseldiehard
 
Join Date: Oct 2002
Location: Bay Area No Calif.
Posts: 4,298
WTB Diff for '99 E300D turbo

This is more a feeler to see if one is available. I have been spoiled driving the "new" to me '99 which I bought recently and is still being broken in basically.

The "old" E300D which my wife's niece drives to college was here for me to do some tire work today and I drove it for the first time in months and I noticed the thump it always made when going from coasting to acceleration seems to be getting louder, or rather one can feel it more.

The rear flex disc was replaced already. From a road test it seems to be slop in the diff so I am going to have a friend run it up on his shop lift to see if there is anything in the way of the trans mount or suspension that can be a factor, but I really doubt that as I changed nearly anything in the bottom side with rubber in it after I got the car from Forum member anghrist. That was around 6 years ago.
The car always had a little gear whine in the rear end, nothing excessive and I can live with that but this thumping needs to be addressed before it damages a flex disc or worse.

At one time I looked diligently for a diff, hoping to find a low mileage one but that search was short lived after my friend who owned a shop where I did part time work in exchange for lift time died and the shop changed hands.

I would never try puling a diff at a pick-n-pull either, not at my age and besides that would be a really tough thing to perform in a wrecking yard!
SO, if anyone has a diff out of a W210 turbodiesel (98-99) let me know by PM or reply direct.
I should know more tomorrow after I check for play in my driveshaft.

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'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!
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Old 07-12-2019, 03:08 PM
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Dieseldiehard
 
Join Date: Oct 2002
Location: Bay Area No Calif.
Posts: 4,298
I've pretty much determined its the diff thats causing the thump, it has more play then the "new" E300D used for comparison (48Kmiles).
Holding one wheel and rotating the opposite one I see about 3X the slack in the wheel before the gears engage in the diff and I felt resistance.
Maybe 2 degrees rotation on the new car for about 6 degrees rotation on the old car. That allows the engine to rev up a bit before the diff loads it.
Its a 3.07 Pumpkin p/n A210 351 08 05
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'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!
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Old 07-13-2019, 09:19 AM
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Location: New Milford, Ct
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I have a '99 diesel parts car. It runs and drives so I'll check the diff for slop.
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'97 Renntech E60RS
'97 GMC 2500 Sub' Diesel
'95 E300D
'88 300TE
'88 250TD
'84 L/Rover 109
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Old 07-13-2019, 11:49 PM
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Dieseldiehard
 
Join Date: Oct 2002
Location: Bay Area No Calif.
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Hi Dave! let me know but realize also that I have lined one up across the state, I was told its off a relatively low mileage car, but no actual mileage numbers. The cost to get it would probably exceed the shipping I am still holding my breath and I am not in a hurry to install one! there was a complete car offered earlier this year for something like $1200 and I figured it was worth more than that in parts. But I have no place to part out a car.
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'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!
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Old 07-14-2019, 10:36 PM
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Posts: 6,810
I have a '99 E300 parts car in So. Cal. I will be going to the Legends in Monterey on the 15th of August, I could bring it with me.....Rich
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Old 07-17-2019, 06:32 PM
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Dieseldiehard
 
Join Date: Oct 2002
Location: Bay Area No Calif.
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thanks to all who responded, I located a diff with 75K miles on it. Luck o' the Irish

I will report on the outcome next month, this will take a while.
Really couldn't take the "thump" every time the accelerator is pressed, I was learning to ride it like walking on pins and needles but the young lady that drives it is completely incapable of anything but tromp (thud) and release, tromp (thud) and release. Gotta be hard on the flex discs
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'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!
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Old 07-17-2019, 09:09 PM
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Location: Orange County, California
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Or you can just have a differential / gear shop just go through your existing one and adjust it for you rather than buying another used diff with potentially the same problem that you're trying to remedy. If they find no problem then you know your problem is elsewhere in the driveline.
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Old 07-17-2019, 09:23 PM
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Location: Bay Area No Calif.
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Quote:
Originally Posted by upod View Post
Or you can just have a differential / gear shop just go through your existing one and adjust it for you rather than buying another used diff with potentially the same problem that you're trying to remedy. If they find no problem then you know your problem is elsewhere in the driveline.
I would rather take a chance with a low mileage OE diff than risk going through what I saw when a shop here sent a diff to be rebuilt and it came back with a bad whine, they must not have got the torque right. I heard a lot about using plastigauge and some careful reassy that must have not been done properly
Thats a job for an expert, and out here I don't know any good shops that do that sort of work.
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  #9  
Old 07-17-2019, 10:02 PM
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Join Date: Jun 2012
Location: Orange County, California
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How about taking the car to your mechanic and trying to sort things out, given that they messed this up by sending it out to a hack differential shop? Maybe they'll buy the used diff for you since it sounds like their mistake!
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  #10  
Old 07-17-2019, 11:09 PM
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Dieseldiehard
 
Join Date: Oct 2002
Location: Bay Area No Calif.
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Quote:
Originally Posted by upod View Post
How about taking the car to your mechanic and trying to sort things out, given that they messed this up by sending it out to a hack differential shop? Maybe they'll buy the used diff for you since it sounds like their mistake!
You misunderstood what I said. please re-read my post.

I used to do part time work at a friend's shop. I never intended to be a mechanic but after I got hooked on Mercedes diesels I needed a lift and in return I did occasional work there to fill in when they were busy or on weekends. A customer had a noisy diff and the shop called on a well known transmission shop (name left undisclosed). The result was less than perfect, I was surprised when I learned it had a whine, the owner described a lot of the details they took etc anyhow that was NOT the diff in this car.
I hope this is more clear now.
The 75,000 mile diff I am buying has a 6 month warranty, if that is worth anything because the labor to R&R is probably going to exceed the cost of the diff.
DDH
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'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!
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  #11  
Old 08-07-2019, 10:08 PM
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Dieseldiehard
 
Join Date: Oct 2002
Location: Bay Area No Calif.
Posts: 4,298
found a pull with 75K miles on it for $350 and its installed as of yesterday I drove it and NO MORE big THUMP!

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