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#1
08-16-2012, 10:23 PM
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Is my transmission toast? Leaked on HWY!
In question is an '83 300SD with an original trany sitting on about 300K miles. My wife was driving home on the highway this evening when an unfortunate "perfect storm" of events happened.
What happened: The belt driving the A/C compressor broke. When it did, instead of dropping out the bottom it decided to go up into the radiator fan and get nicely tangled up. The left over tail of the belt slinging round and round on the fan became an excellent weed-whacker and cut up the lower transmission oil cooler line. Needless to say, all the trany fluid was lost on the HWY(well, allot of it actually painted my engine compartment and underside of my car). My wife of course experienced a loss of power and pulled off the hwy as soon as she could, however, by the time she came to a stop the car didn't go go go anymore. The repair of the hose and doing a filter change and fill up on the trany are easy. I'm not worried at all about getting it back together. Question/Concern: Does anyone know if this event of sudden fluid loss while driving hwy speeds will damage the trany? Is it somewhat likely? Very likely? Absolutely likely? I'm wondering if I'm wasting my time with a new filter and filling it back up. Take a chance? Or just go ahead and send it to the rebuilders? You experiences and valued opinions please. Thank you.
__________________
Cousin Dave 83' 300SD 250k+ and going strong! Take the best that exists, make it better! If it doesn't exist, create it! Accept nothing nearly right or good enough! 
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#2
08-16-2012, 10:49 PM
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I doubt it will have any effect on the operation of the transmission.
__________________
1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
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#3
08-16-2012, 10:59 PM
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Hi, sorry to hear the unfortunate incident...but I think you're fine.
This actually happened to me a couple years back on my 300d when a bad motor mount coupled with a worn out bushing for the metal trans cooler line caused a breakage on the line dumping the fluid while I was driving up a hill in summer (so the trans was working hard). I replaced the line and while in there just replaced filter/pan gasket and refilled w/lucas. Car's been fine since and never showed any sign of damage to the trans.
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#4
08-16-2012, 11:01 PM
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Quote:
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#5
08-16-2012, 11:26 PM
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If it empties all the fluid rapidly it can't do much damage as the trans goes dry and the pressures drop to 0, torque converter is just spinning with no fluid. Fix the lines and change the transmission filter/add new fluid and I bet it will be good to go.
__________________
-diesel is not just a fuel, its a way of life-  '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k)
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#6
08-17-2012, 01:50 AM
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Quote:
It basically goes into neutral when the fluid is lost like that.
__________________
Grumpy Old Diesel Owners Club group I no longer question authority, I annoy authority. More effect, less effort....  1967 230-6 auto parts car. rust bucket. 1980 300D now parts car 800k miles 1984 300D 500k miles 1987 250td 160k miles English import  2001 jeep turbo diesel 130k miles  1998 jeep tdi ~ followed me home. Needs a turbo. 1968 Ford F750 truck. 6-354 diesel conversion. Other toys ~J.D.,Cat & GM ~ mainly earth moving
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#7
08-17-2012, 08:21 AM
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The new hoses have springs over them to prevent that from happening in the future.
__________________
1984 300SD Orient Red/ Palomino 1989 560SEC 2016 Mazda 6 6 speed manual 1995 Ford F-150 reg cab 4.9 5speed manual
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#8
08-17-2012, 10:09 AM
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Thanks for the replies folks. I feel much better about the situation now. That makes sense about the trany basically going into neutral when it looses it's fluid quickly. Sounds like it'll be back on the road today! I noticed the spring on the new cooler hoses. That's a good upgrade.
__________________
Cousin Dave 83' 300SD 250k+ and going strong! Take the best that exists, make it better! If it doesn't exist, create it! Accept nothing nearly right or good enough!
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#9
08-17-2012, 10:20 AM
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I am sure it is fine.
300k is nearing the end of its life, just so you know. I am going to order a kit to rebuild the 722 here, I am in DFW if you want to borrow it.
__________________
I'm not a doctor, but I'll have a look.  '85 300SD 245k '87 300SDL 251k '90 300SEL 326k Six others from BMW, GM, and Ford. Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]
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#10
08-17-2012, 06:59 PM
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I'll keep your offer in mind if that happens  Let us know how the rebuild goes. And share obstacles you have to overcome.
__________________
Cousin Dave 83' 300SD 250k+ and going strong! Take the best that exists, make it better! If it doesn't exist, create it! Accept nothing nearly right or good enough!
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