Well it's been a few more days with the diesel and I'm still lovin' it . Still have minor stuff to fix of course. First question is does anyone know where the fuse is for the rear defroster is on an 84 300sd?? In my old 380se it was on the drivers side fender well and looked like a metal strip between two screws. I can't find anything similar on this car. Also don't see it mentioned on the label in the fuse box. Where is this stupid thing?? Second issue is my odometer stopped working I pulled the cluster out to see what broke and found that the tiny little gear on the odometer was broken and of course it completely fell apart when i touched it Any ideas on a fix for this or where to find that little gear?? I checked Ebay for a replacement speedo but only found 85 MPH speedos. Mine is 120, is this right or maybe it's been replaced before Thanks for the help AGAIN

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U. S. Air Force Air Traffic Controller
"U gotta keep 'em separated!!"

The 120 mph speedometer is correct for an '84 SD or D. They were 85 mph prior to '83 because of the US 55mph national speed limit. The reason for the double nickle was the oil embargo of '73 and resultant run up of gas and diesel prices. De javu.

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1961 190Db retired
1968 220D/8 325,000
1983 300D 164,150

The rear defog also uses a relay. Its the silver cans in the fuse block just ahead of the fuses. Its the one that is closest to the fender and closest towards the windshield. Try substituting one of the other ones and see if it works. HTH Mike

Contact Continental Imports. They should be able to help you out.

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Rick Miley
2014 Tesla Model S
2018 Tesla Model 3
2017 Nissan LEAF
Former MB: 99 E300, 86 190E 2.3, 87 300E, 80 240D, 82 204D Euro
Chain Elongation References

Hey,
I just fixed mine. I bought the gear from www.odometergears.com for $25
I highly recommend doing this. It beats $150 for a rebuilt unit.
If you do this you need to check the first large gear and clean out any remaining pieces of the smaller gear that may be in the teeth.
You have to pry the brass fitting on the shaft off. I used a small screwdriver and gently pried a little. turned the shaft 1/2 turn and gently pried again.
Repeat this process until the fitting loosens up. Once it's loose it comes right off.
The new gear is pushed on by hand. One end is tapered to make installation easier.

Danny

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1984 300SD Turbo Diesel 150,000 miles

OBK member #23

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Thanks guys for the info and links. $25 for that tiny little gear Holy crap it must be made of solid gold!! Oh wait, gold wouldn't crumble when touched! Anyway, I guess it's worth it. I'm gonna get one ordered today. How else am I gonna know when I get to 500k miles? I'll also order a new relay since switching it means something else won't work. But I will switch it to test the circuit. You guys are the greatest, thanks again.

__________________
U. S. Air Force Air Traffic Controller
"U gotta keep 'em separated!!"

You can have my whole working 0-85MPH speedometer for 25 bucks if you want it. The only thing it doesn't have is a needle on the end of the shaft. The rest is there, and VERY working

Begging your pardon ..... It's: deja (already) vu (seen)

Yeah, I'm a 4th gen German American and don't speak or write frog well at all. Of course I'm also an 11th gen English American and don't speak or write frog well at all. Sorry bout that.

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1961 190Db retired
1968 220D/8 325,000
1983 300D 164,150