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#1
12-01-2007, 02:25 PM
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W123 power antenna
After replacing my mast, I am having trouble getting my power antenna to go up and down. opening it up it looks like there are two sets of gears on top of each other... the top one is spinning, but the bottom one isn't... What's wrong?
Also, anyone with an 85 300D, I would appreciate it if you could take a picture of your power antenna in the trunk of your car.. It looks like somehow my bracket was just bent WAY out of shape... maybe one of my kids??
__________________
1985 MB 300D/T Fell off the WVO bandwagon when people started trying to charge $2.50 a gallon for dirty vegetable oil. 
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#2
12-01-2007, 04:57 PM
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See if this helps
126 trunk vent?
__________________
1983 300SD 200000miles
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#3
12-01-2007, 05:12 PM
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sorry, didn't help at all, totally different chassis, totally different antenna it looked like.
__________________
1985 MB 300D/T Fell off the WVO bandwagon when people started trying to charge $2.50 a gallon for dirty vegetable oil.
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#4
12-01-2007, 07:39 PM
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Quote:
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#5
12-01-2007, 07:49 PM
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well, there's no way to tell for sure, because the antenna was there before I bought the car...
but everything fitting before I tried to replace the mast tells me that it was close enough to the right one
__________________
1985 MB 300D/T Fell off the WVO bandwagon when people started trying to charge $2.50 a gallon for dirty vegetable oil.
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#6
12-01-2007, 08:13 PM
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It does look like the '85 is different from my '82 and '83:
http://catalog.worldpac.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=1CQ0J3JZ428O17AEDN&year=1985&make=MB&model=300-DT-001&category=All&part=Power+Antenna
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#7
12-01-2007, 08:15 PM
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Can you post a pic of your antenna? Any identifying name or numbers printed on it? My W123 looks like the one in the link.
John
__________________
Certified Registered Nurse Anesthetist (CRNA) 2002 F250 powerstroke with Plantdrive WVO conversion 1983 300SD 190K miles ,sold 2006 E320 CDI
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#8
12-01-2007, 08:16 PM
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I can. it looks like the antenna till you see the shot of the inside, post that pic sometime tonight
__________________
1985 MB 300D/T Fell off the WVO bandwagon when people started trying to charge $2.50 a gallon for dirty vegetable oil.
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#9
12-01-2007, 10:21 PM
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I took the pics but I am having some problems staying connected to the internet now. I did tear the mechanism further down to find that there is sort of a wire spring "buffer" coil *thingy* that connects the two gears, and for me, a piece broke off of the top gear so that the bottom gear just spins freely. I still have the old motor (but I went outside about 10 minutes ago and couldn't seem to find it) so when I do find it I will check to see if the top gear is good on that one...
if not, I am wondering why there would need to be a spring between the two gears... why couldn't I just screw them together?
__________________
1985 MB 300D/T Fell off the WVO bandwagon when people started trying to charge $2.50 a gallon for dirty vegetable oil.
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#10
12-02-2007, 05:10 AM
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It's there to keep the gears from jolting too much when the mast reaches the top, or bottom of it's travel. Basically, it keeps the teeth from stripping off, as near as I can tell. Interesting how the design backfires, eh? I have a Hirschmann just like that in my collection, but I haven't spent any time messing with it, yet.
In my research, I've discovered folks that actually screwed and glued the two gears together, and it worked okay. No word on whether rigidly fixing the gears to each other is a long-lasting solution, however.
__________________
- K.C.Adams '77 300D Euro Delivery OM617 turbo / 4-speed swap 404 Milanbraun Metallic / 134 Dattel MB-Tex Current status: * Undergoing body work My '77 300D progress thread
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#11
12-02-2007, 07:36 AM
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when I took mine apart in my 84 there is belt and the gears are pulleys. Are you missing the belt? I ordered a new belt from Stock Drive Products for $3
__________________
 1982 300CD Turbo (Otis, "ups & downs") parts for sale 2003 TJ with Hemi (to go anywhere, quickly) sold 2001 Excursion Powerstroke (to go dependably) 1970 Mustang 428SCJ (to go fast) 1962 Corvette LS1 (to go in style) 2001 Schwinn Grape Krate 10spd (if all else fails)
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#12
12-02-2007, 09:56 AM
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The gear in my original was still good so I swapped them. I made some pictures to make sort of a DIY, but then I realized that the problems would probably be pretty different for each unit...
__________________
1985 MB 300D/T Fell off the WVO bandwagon when people started trying to charge $2.50 a gallon for dirty vegetable oil.
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#13
12-02-2007, 10:32 AM
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__________________
1985 MB 300D/T Fell off the WVO bandwagon when people started trying to charge $2.50 a gallon for dirty vegetable oil.
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#14
12-02-2007, 01:51 PM
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Try this link for a diagram of your antenna. It helped me when I was cleaning and repairing my Hirshcmann.
http://www.geocities.com/odemer@sbcglobal.net/ John
__________________
Certified Registered Nurse Anesthetist (CRNA) 2002 F250 powerstroke with Plantdrive WVO conversion 1983 300SD 190K miles ,sold 2006 E320 CDI
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