a couple problems with 1985 300 - Mercedes-Benz Forum

 
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post #1 of 5 (permalink) Old 12-19-2012, 12:15 PM Thread Starter
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a couple problems with 1985 300

I'm working on a friend's 1985 300cd. First problem is pretty minor. My friend told me he thinks it is a 300cd, but a couple parts (secondary fuel filter for instance) don't seem to fit. I tried looking up the vin and the results said 300td, but it's not a wagon. Second problem is the engine mount. The bolt on the bottom side seems to be between a 10mm and 11mm. The bolt is slightly recessed so I'm not sure if that is why the socket doesn't want to fit on right. Third problem is the primer pump. It is the old white plastic type and it is leaking. The biggest "stubby" wrench I have is 18mm but it looks like I need about a 22mm. Any suggestions on how to fix the pump would be appreciated. Is there anyway to rebuild them?
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post #2 of 5 (permalink) Old 12-23-2012, 03:21 PM
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Vehicle: 1984 300D turbo 1982 380SL 1981 380SL 1984 300SD
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Use a pair of vice grips gently on the cylinder of the pump body, it is not on there very tight.

It is a 300CD if it has a turbo and is a coupe, and that's about all there is to that.

If the fuel filter doesn't fit and you are specifying an 85, try for a 1984 and see if you get a different part number.
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post #3 of 5 (permalink) Old 12-23-2012, 04:00 PM Thread Starter
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Awsome thank you. Also, I am not accustomed to this style engine mount. I removed the engine mount strut because it is bad. As far as the engine mount, do I have to disconnect the mount from the engine to get the (rubber bushing) mount off? Cause that's the only way I can see to get to the inner most 10mm bolt holding the rubber mount to the frame.
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post #4 of 5 (permalink) Old 12-23-2012, 06:57 PM
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The driver side mount is way easier than the passenger to remove, sometimes it is just easier to remove the aluminum strut from the engine than trying to contort and doing it "easier".

You might also wish to ask these questions in the W123 forum instead of general, as well.
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post #5 of 5 (permalink) Old 12-23-2012, 07:11 PM Thread Starter
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Ok. I'm pretty new to the whole internet thing. Lol, it took me about 30 minutes just to figure out how to start this thread.
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