What have you done on your Classic today? - Mercedes-Benz Forum

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post #1 of 23 (permalink) Old 02-27-2015, 06:37 AM Thread Starter
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Date registered: Oct 2012
Vehicle: 1968 250S, 1991 300se, 1998 SL500, 2x 1977 450SEL 6.9. Past MB's; 300SD, 300E, 300TE, 190E, ML420
Location: Colorado
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Garage
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What have you done on your Classic today?

Several other forum sections have a thread like this, thought I would start one here.

My project kind of started with my air pump making weird noises when I started the car, so I ordered a rebuilt one. I had already stockpiled parts to address front main seal leak and some of the radiator hoses that are 30-47 years old that I anticipated replacing.

As I pulled the car into the work bay I also noticed gas dripping from the fuel pump. I have a few spare pumps, but also bought some repair kits on fleabay. The kits matched exactly the old lever style aftermarket pumps, but required serious modification to fit the original MB pump. These lever style are NLA.

The air pump arrived but is missing the pipe that come out of the back side the air hose connects to. seems all the new ones are that way. fortunately there is a mounting flange, bolt holes and supplies gasket for the mysterious missing part. I fab'd one from some 1/4" steel and 3/4" pipe.

The front main seal was easy enough after removing the radiator and belts and such. My air impact wrench removed the crank bolt easily. It is torqued to 300 ft/lbs. The old seal pops out very easy with a paint can opener. I made a puller for the ring on the crank from a piece of 2" PVC. BTW there is a lot of relevant information on sl113.org that applies to 230/250/280 engine and many other areas common to that vintage. That is where I found good info on doing this job. I turned the ring around to eliminate the wear area and pushed back on.

2 of the radiator hoses I needed are only available from MB (unless you want URO) , so I placed an order from the classic center for them. A genuine MB lower hose is exactly the same cost as a URO hose locally! go figure!

Things deviated a bit at this point as with all the hose replacements I am doing. I started focusing on the hose clamps. Found out quickly that the old original style clamps that have a long screw and nut are absolutely no longer available. According to concours judging if you replace all on your car with the current available Norma MB / german style clamps you are not docked anything. So after some research by classic center I have a bunch of new clamps on order also. I will use my still good looking original types in a few locations, and the new ones will replace a lot of ungainly looking Gates / US style clamps that ended up on the engine over the last 46 years.

Still on the work list is replacing transmission filter and fluid and pulling the driveshaft to get balanced. I rebuilt it last years, but it vibrates a lot.

Last edited by rumb; 02-27-2015 at 06:39 AM.
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post #2 of 23 (permalink) Old 02-28-2015, 11:08 AM
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Date registered: Mar 2014
Vehicle: 1968 280se, 1972 280se 4.5, Land Rover disco II, Triumph Thruxton, Triumph Tiger. +boring Chevy Van
Location: Grass Valley california
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Were would you get a drive shaft balanced? I think mine vibrates a little to much.

I'm currently working on both my 280"s one 4.5 one 6.

On the 6
Front rotors and new bearings etc.
New Draglink.
New fan belts.
Exhaust system (that was no fun fitting)
fuel tank flush and fuel lines cleaned.
I've already done the basic fluid changes. Tranny, engine, coolant, brake fluid etc.

On the 4.5
New drag link and damper. (what a difference
Timing chain stuff. Chain, guides, Tensioner, cam tube clips.
i bought the manual from that bloke on You Tube Kent Bergsman. Mercedessource.
It gives a nice clear step by step guide.
This summer i'm going to address a few small rust areas. Also respray the roof. Its a two tone car. I want to keep it as original as possible and not over restore.
Cheers John.
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post #3 of 23 (permalink) Old 02-28-2015, 01:07 PM Thread Starter
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Date registered: Oct 2012
Vehicle: 1968 250S, 1991 300se, 1998 SL500, 2x 1977 450SEL 6.9. Past MB's; 300SD, 300E, 300TE, 190E, ML420
Location: Colorado
Posts: 2,348
Mentioned: 5 Post(s)
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Garage
(Thread Starter)
I just looked in the yellow pages / google. There is a place near here that does it. I would suspect there are a lot of businesses that do this wherever you live. I did a quick google and saw 8 in your area.
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post #4 of 23 (permalink) Old 02-28-2015, 06:12 PM
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Date registered: Mar 2014
Vehicle: 1968 280se, 1972 280se 4.5, Land Rover disco II, Triumph Thruxton, Triumph Tiger. +boring Chevy Van
Location: Grass Valley california
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What did you look under? Machine shop?
Thanks john
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post #5 of 23 (permalink) Old 03-01-2015, 06:52 AM Thread Starter
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Date registered: Oct 2012
Vehicle: 1968 250S, 1991 300se, 1998 SL500, 2x 1977 450SEL 6.9. Past MB's; 300SD, 300E, 300TE, 190E, ML420
Location: Colorado
Posts: 2,348
Mentioned: 5 Post(s)
Quoted: 425 Post(s)
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post #6 of 23 (permalink) Old 03-01-2015, 10:23 PM
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Date registered: Mar 2014
Vehicle: 1968 280se, 1972 280se 4.5, Land Rover disco II, Triumph Thruxton, Triumph Tiger. +boring Chevy Van
Location: Grass Valley california
Posts: 431
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Thanks for that Rumb
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post #7 of 23 (permalink) Old 03-18-2015, 10:22 PM
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Date registered: Oct 2012
Vehicle: 1972 220 D, 1974 450SL, 1995 E300D 2002 S430, 1976 300D
Location: Seattle
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I just finished tearing out the interior and most of the console. Picked up what was once a very nice 1976 300D, but prior owners did not love her as she needed. Now it will be a 24 hours of LeMons contender. In coming months I will be welding and making her safe to take on the road.

Clay

74 450SL - Froggy
'02 s320 - Victor
'76 300D - Voldemort
'95 E300D - Cleo
'72 220D - Gump
'87 300SDL - POS SDL

92 300SE - #1 boys ride
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post #8 of 23 (permalink) Old 03-21-2015, 12:00 PM Thread Starter
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Date registered: Oct 2012
Vehicle: 1968 250S, 1991 300se, 1998 SL500, 2x 1977 450SEL 6.9. Past MB's; 300SD, 300E, 300TE, 190E, ML420
Location: Colorado
Posts: 2,348
Mentioned: 5 Post(s)
Quoted: 425 Post(s)
Garage
(Thread Starter)
re-installed my balanced drive shaft. wow very smooth now.

Also adjusted the trans anti kick down switch on front carb and got rid of that horrible clunk when I came to a stop! Why didnt I do that a long time ago?
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post #9 of 23 (permalink) Old 03-21-2015, 05:30 PM
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Date registered: Jun 2009
Vehicle: 1955 300 SL
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Nothing! We had snow again last night and this AM. Usually I'm able to take a car out for a nice warm-up drive on the first day of Spring, but the weather isn't being cooperative. Perhaps tomorrow, perhaps next week, perhaps . . .
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post #10 of 23 (permalink) Old 03-22-2015, 08:08 AM
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Date registered: Sep 2014
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Installed the NOS cibie long range driving lights in place of the original fake fogs using the stock light switch-figured out how to move the indicator/parking lights to the clear plastic triangles using a generic push socket with dual filament Amber bulb. One side has a short elsewhere, likely from reassembly post paint..will track down next weekend but should be complete after that
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