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#16
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Some weaknesses in the 722.6 design that got rectified in the later years. Things like the dreaded conductor plate and wire connections. And MB coming to the realization that "sealed for life" in a transmission was a fallacy.
The 722.6/OM606 turbo combination in a W210 can not be beat in my book when properly maintained. The spring perch issue and body rust problems are the only flaws in an otherwise beautifully engineered and executed vehicle. Some say the last 124 - 95 E300 - is the best Diesel MB ever made. I contend it is the 96-99 W210. The W210 design was baked before the Chrysler merger took hold, and to me represents the last of the models MB was allowed to design for reliability and not for cost. Technology was racing forward in the early 90s, and many new techologies were incorporated in the W210, that were ahead of their time compared to other makers of that era, and not available when the 124 was designed in the early 80s. - CAD design - the car was completely CAD modeled and the tooling produced on CNC machines. Totally standard today for even a KIA but back in the early 90s most were still doing it the old fashioned way. The W124 had some rudimentary computer FEA runs done to determine body strength, but the vast majority of that car was designed on a hand drawing board and the tooling created by hand off the drawings. - Electronically controlled transmssions - not that many 5 speed auto transmissions available in the mid 90s. Even fewer that were electronically controlled. - CAN bus body control - again another thing that even KIAs do as standard today but groundbreaking in the early 90s. Compare the way the 124 and 210 handle body control functions. Everything in the 124 is straight wired from fuse to switch to device. In the 210 everything communicates over CAN bus.
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The OM 642/722.9 powered family Still going strong 2014 ML350 Bluetec (wife's DD) 2013 E350 Bluetec (my DD) both my kids cars went to junkyard in 2023 2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles) 2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles) 1998 E300DT sold to TimFreeh 1987 300TD sold to vstech |
#17
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1997, 1998, 1999 had roller bearing failure bringing down the planetary gear requiring full teardown. At that point it's useless to rebuild the transmission and cheaper acquiring a reman. or used.
Another stupid easy repair that the model years get are pressure regulator springs that break inside the valve body. Very common, and a 5-10 minute job and about $20.00 to do. Not including leaking connectors at the conductor plate. Simple to fix. Just don't let it go.
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Only diesels in this driveway. 2005 E320 CDI 243k Black/Black 2008 Chevy 3500HD Duramax 340k 2004 Chevy 2500HD Duramax 220k |
#18
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Quote:
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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles 06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU 91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion 19 Honda CR-V EX 61k mi Fourteen other MB's owned and sold 1961 Very Tolerant Wife |
#19
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...are you aware how many cars had those issues? 20%? 10%? ...did the 722.6 in the refresh resolve those issues and can a pre-facelift tranny be replaced by a post-facelift tranny?
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"Senior Luna, your sense of humor is still loco... but we love it, anyway." -rickymay ____ "Your sense of humor is still loco... " -MBeige ____ "Señor Luna, your sense of humor is quite järjetön" -Delibes 1982 300SD -- 211k, Texas car, tranny issues ____ 1979 240D 4-speed 234k -- turbo and tuned IP, third world taxi hot rod 2 Samuel 12:13: "David said to Nathan, “I have sinned against the Lord.” And Nathan said to David, “The Lord also has put away your sin; you shall not die." |
#20
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Quote:
When the pressure regulator spring breaks, it isn't the end of the world. It will cause a harsh shift between gears 2-3 and 3-4. Something to get around to, but isn't going to cause any kind of catastrophic failure like roller bearings. Jooseppi, I have seen about 75% of the W210s I have diagnosed with transmission failure with this issue. It isn't limited to just W210 Diesels as any car from this era with the 722.6 gearbox can have these issues. Facelift gearboxes rectified the roller bearing failure of the 722.6 including pressure regulator spring problems. However leaking at the harness and the conductor plate connector did not resolve in facelift gearboxes. Last edited by jake12tech; 07-28-2014 at 09:45 PM. |
#21
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Quote:
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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles 06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU 91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion 19 Honda CR-V EX 61k mi Fourteen other MB's owned and sold 1961 Very Tolerant Wife |
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Between 100-150K miles I have experienced seems to be the norm.
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#23
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Well, we'll see how I make out.....98 has 83k and 99 has 153k....both extremely well taken care of fluid and filter wise.
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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles 06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU 91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion 19 Honda CR-V EX 61k mi Fourteen other MB's owned and sold 1961 Very Tolerant Wife |
#24
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Back on topic: I think I'll let this one go, as it's rusty. It's a shame though, the motor sounded great and it drove nice. I think I'll be looking for a different 210 or a 124. I really liked my 124 and I really miss the way a mercedes feels. Thanks everybody!
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-1983 VW Rabbit LS Diesel (5speed, VNT/Giles build) |
#25
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the front shaft bearing failure in the early NAG-1 transmissions usually happened due to lack of fluid and filter changes (stupid life long fluid recommendation from MB)
Sonnax make the bearing inserts for replacement.
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2012 BMW X5 (Beef + Granite suspension model) 1995 E300D - The original humming machine (consumed by Flood 2017) 2000 E320 - The evolution (consumed by flood 2017) |
#26
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1995 E300D
Quote:
Jeremy
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"Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970 |
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