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1990 Mercedes-Benz 300E Question: distributor/rotor adapter problem

 

Question

Igor Ed, Forgan, OK, May 09, 2009, 13:32
 Rookie

I am attempting to change out the distributor/rotor adapter. It is a keyed shaft. I have removed the screw and was told to give it a quarter turn and it would slide out. The screw is out, but cannot get the quarter turn in any direction. I have tried to just pull it out and that is a no go. It is frozen in place. How or what do I need to do?
There is nobody in my area willing to work on it.

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  • Answer #1

    Bret Bodas from RepairPal Test Shop, June 10, 2009, 19:58
     Master

    Did you ever figure this out? How did you get it off?

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  • Answer #2

    Visitor, July 08, 2010, 22:15

    same thing happened to me ended up replaceing the cam sucks

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  • Answer #3

    ramjetmech June 18, 2013, 23:48
     Rookie

    Here is what you do, had same problem go down to Ace Hardware tell them you need a starter tap 5/8-18nf made by Hanson. this tap will start very easy. as you turn it into the rotor adapter you will be cutting threads, go all the way down till it stops then remove it. now while you are at ace get 3 or 4 bolts with the same thread pitch as the tap, 3 inches 4 inches and 5 inches in length. I used a 4 inch bolt same length as my tap. they are cheap so buy a couple different lengths.. I had to move my fan housing out of the way. it's easy, release on top of fan housing and rotate, will come off. Buy some washers same inside diameter as bolt but different thicknesses. OK I used a couple of washers and A old socket it was big 2 3/4 inch with a 3/4 drive that way the 5/8 inch bolt will fit through the 3/4 drive. if not,a machine shop could open it up for pennies, lay the socket over the adapter so you can just barely start the bolt. use washers if needed. what will happen is as you start to screw the bolt down and the bolt head hits the washers and the top of the socket it will start to draw the adapter out. it will come almost all the way out then just grab it with some pliers, don't pry on any housing, and wiggle out. Learned this working on Aircraft and Submarines. same principle when you pull bearings out of landing gear.. I just had to think about it for awhile but it works great and will save you some Big Bucks.Now if the top of the Adapter broke off and just the shaft is in there like my friends did you just use a smaller socket or like I did just used a couple of washers and the box end of one of my wrenches think it was 3/4 inch. One last thing, you don't have to twist the adapter it is slotted straight down the side. Total cost for all this about 12 dollars. unless you have to buy a socket but just go to a flea market maybe 10 bucks Just read this a couple of times you'll get it.. and don't forget to use a magnet to make sure no metal chips are left after tapping the adapter. I know this letter is long but you can use this same principle on a lot of things that are stuck in a bore RamJetMech

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