Dumb Brake, Tranny diagnostic questions - Mercedes-Benz Forum

 
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post #1 of 2 (permalink) Old 12-25-2012, 02:00 AM Thread Starter
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Dumb Brake, Tranny diagnostic questions

I have a 1982 300D Turbo that's occasionally driven.

While replacing glow plugs, I leaned on the radiator hose and finished off the cracked flange, a $50 repair ended up costing $400 after replacing radiator and battery to get it running again. Already spending too much, I need to DIY everything.

Questions:

How much transmission fluid would be lost ion changing the radiator, losing fluid in the cooler + dripping?

I never had an automatic before, checking the fluid level for the first time after replacing the radiator I only see a slight wetting of the dipstick inches above the normal marks, seems like this might just be from vapor, is the tranny fluid level on the stick apparent?
It started a bit of clunking on downshifts before the radiator change, but may be doing it more now. Might that be due to low fluid? torque converter seems to feel right.

The brakes feel normal driving gently, but have no emergency stopping power, it can be stopped if the throttle was stuck but I can's lock up the wheels, the pedal travel is not bad, something less than an inch pedal travel before the brakes engage, bled the 4 wheel lines with no big change, the front reservoir got very low or dry once in the past, sound like the master cylinder need bleeding.? sounds like a tough one man job (I have most of the factory manuals)

Thanks for any clues
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post #2 of 2 (permalink) Old 12-25-2012, 12:03 PM
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When you park the car nose higher, the ATF loss while disconnecting the radiator will be minimal.
Check with your model section, but MB master cylinders do not require bench bleeding and firm pedal would indicate no air in the lines.
Your engine has vacuum pump with diaphragm that has limited life span. I would suspect you have no vacuum boost. Hook up vacuum gauge to the system and check for leaks and pump performance.
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