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#1
01-09-2010, 09:26 PM
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Differential fill plug stuck
I am having the worst time getting that stupid bolt off.
Any tips on getting it out?
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-Typos courtesy of my mobile phone. Last edited by okyoureabeast; 01-09-2010 at 10:23 PM. 
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#2
01-09-2010, 09:31 PM
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Long breaker bar. Jack up the car and put the breaker bar on the plug with one end resting on the ground. Let the car down using the weight of the car to turn the plug. Alternatively, rest the end of the breaker bar in the cup of a hydraulic jack and pump the jack up.
Or, use an impact wrench.
__________________
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
01-09-2010, 09:32 PM
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Wonder if a torque multiplier would fit under there?
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=93645
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#4
01-09-2010, 09:33 PM
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Torch it. I torched mine, didn't even have to use a breaker bar.
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1983 240D 3.0T 4-speed manual, now sold  1989 Subaru GL Wagon 5-speed Touring Edition
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#5
01-09-2010, 09:34 PM
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That particular torque multiplier requires a lug bolt in the vicinity to lock it in place.
__________________
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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#6
01-09-2010, 09:34 PM
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I'm going to give the impact wrench a try.
While i'm out in the barn i'm going to grab my heat gun and give that a go as well.
__________________
-Typos courtesy of my mobile phone.
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#7
01-09-2010, 09:38 PM
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Never under estimate the power of a hot spanner (heat torch) !!!!! We use the hot spanner all the time!!
__________________
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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#8
01-09-2010, 09:38 PM
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I use a 14mm Allen wrench - not just a 14mm hex bit in a 1/2" drive adapter, although that might also work with a short breaker bar. I put the short end in the socket of the plug, but only after cleaning it out good and then, based on some shared wisdom from a poster on this board long ago, I spit on the end going into the socket and dip it in Comet or some other abrasive powdered cleanser. With a light coating of the cleanser on the hex end, I put it in the socket and tap slightly with a hammer to make sure it is seated. Then I use the hammer to loosen the plug by smacking the long end of the Allen wrench firmly and frequently near the end. It requires you position the Allen wrench so you get a good shot at the end. Once it moves it will slowly move about half a turn before it is easy to get the rest of the way out.
Good luck, Jim
__________________
Own: 1986 Euro 190E 2.3-16 (291,000 miles), 1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000, 1988 300E 5-speed 252,000 miles, 1983 240D 4-speed, purchased w/136,000, now with 222,000 miles. 2009 ML320CDI Bluetec, 89,000 miles Owned: 1971 220D (250,000 miles plus, sold to father-in-law), 1975 240D (245,000 miles - died of body rot), 1991 350SD (176,560 miles, weakest Benz I have owned), 1999 C230 Sport (45,400 miles), 1982 240D (321,000 miles, put to sleep)
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#9
01-09-2010, 09:45 PM
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Quote:
__________________
1983 240D 3.0T 4-speed manual, now sold 1989 Subaru GL Wagon 5-speed Touring Edition
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#10
01-09-2010, 09:51 PM
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MAPP gas in a propane torch is even better.
__________________
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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#11
01-09-2010, 09:58 PM
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We use oxy/propane. Its nearly as good as oxy/acetylene, much cheaper, Its not really a DYI though ! On earth moving equipment we often have bolts that need to be cut off. I have never had to do that on a MB though!!
__________________
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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#12
01-09-2010, 10:12 PM
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Quote:
What other tool cuts, brazes, heats, gouges, and welds? I think all I needed was a propane bottletorch for my fill plug but I'd advise taking the cover off before heating it.
__________________
'84 300D '97 Jeep XJ lots of mods '01 Subaru Forester
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#13
01-09-2010, 10:22 PM
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Goodness you guys are cracking me up.
Well I found my propane torch, but this is something I am a bit uncomfortable doing especially since all of this equipment was outside in the barn at 0 degrees right now. Calling in the parents  Edit: A mix of propane torch and breaker bare jack did the trick. Thanks guys!
__________________
-Typos courtesy of my mobile phone. Last edited by okyoureabeast; 01-09-2010 at 10:44 PM.
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#14
01-10-2010, 01:47 AM
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Good job Beast!
__________________
Jimmy L. '05 Acura TL 6MT  2001 ML430 My Spare Gone: '95 E300 188K "Batmobile" Texas Unfriendly Black '85 300TD 235K "The Wagon" Texas Friendly White '80 240D 154K "China"  Scar engine installed'81 300TD 240K "Smash" '80 240D 230K "The Squash" '81 240D 293K"Scar" Rear ended harder than Elton John
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#15
01-10-2010, 09:22 AM
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Quote:
DAMN.... That thing must have really been on there. You actually had to "jack" the breaker bar?
__________________
AJ 1985 300D (SOLD) 
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