69 220 Clutch Diagnosis? - Mercedes-Benz Forum

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post #1 of 3 (permalink) Old 02-02-2009, 08:47 AM Thread Starter
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Date registered: Feb 2009
Vehicle: 57 and 61 Ponton's 1969 220
Location: The "Great North-WET"
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69 220 Clutch Diagnosis?

I just did the introduction thing, newbie as of last night.
I came across a 69 220, 4cyl, 4spd car over the weekend that is in original paint, super clean interior, and has a nice running/supposedly rebuilt motor. There has been a full brake job (according to the owner) as well. I plan to drive the car today, I only had a chance to look over the exterior when I saw the car, it has a for sale sign-$1200. The rear rockers are rusty, but I can do the body work and blend the paint if the rust is isolated to that area. So first question is, are these cars known for rust in othe areas?
The owner has put a new clutch master and slave in to "fix" a clutch chatter problem. The car has been mostly parked for a couple of years and this problem surfaced when they started driving it again to sell it. The trouble is that according to the owner, after a week of driving it, the chatter has not gone away.
I need help with a diagnosis on this one. My first thought would be after the car was parked up here in the damp climate, moisture/rust has built up on the metal surfaces, and it should clear up with some use.
My second thought is after being parked that long the rear engine seal may have started to leak oil in to the bell housing, and ruined the clutch.
Third of course is that by coincidence a pressure plate problem has popped up, and it has little to nothing to do with the car being idle. I have an original Mercedes shop manual for the year and know about the mid-year change along with the way to measure the wear on the clutch itself, but I don't think that chatter is indicating excessive wear. I suppose it could be an engine mount or trans mount too?
So, any diagnosis help? Should I just look at the car with the thought that it will need a clutch and judge accordingly? I think along with the rust, if it needs a clutch (I can do the work) that the $1200 is too much for the car.

Thanks in advance for any input.
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post #2 of 3 (permalink) Old 02-02-2009, 02:26 PM
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Date registered: Jan 2008
Vehicle: 1973 W115 200 /8
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The W115 (and W114) cars rust quite badly actually..
Check the valances, and of course the infamous drain in front of the windshield..
The drainholes come out over the clutch-housing, and if clogged up, the water runs into the car instead. And then the rust starts on the floor and of course inside the drain-housing..
Also, the floors have "asphalt"-mats inside and usually some sort of hard coating underneath.. Which can "hide" the rust.. Check the floor for solidity and sound.. Meaning you should tap it with a small hammer or so, to hear if the rust has eaten away the metal in between the layers..
Also use a screwdriver handle, and "tap" along the rockers (The part under the doors, from the front fender to the rear wheelarch.) This way you can hear if the rockers are filled up with sand/dirt or rust...

Not sure about the clutch.. Start by cheking if the hose is ok.. Could be a seperate cup of fluid, or it takes the fluid from the brake-reservoir.. Then bleeding it, to see if that helps.

1991 W140 400 SE - SOLD !!
1973 W115 200 -For sale as project.
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post #3 of 3 (permalink) Old 02-03-2009, 07:07 AM
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If a new clutch was fit and it now chatters something was likely done wrong or the new pieces are at fault, in any case its out with the gear box.
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