big mistake... Transmission cover destruction and the tale of the selector seal
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Thread: big mistake... Transmission cover destruction and the tale of the selector seal

  1. #1
    Fellow Frogger! forzamacchi's Avatar
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    Default big mistake... Transmission cover destruction and the tale of the selector seal

    I knew I knew I shouldn't have dug into it... but the seal was sitting there weeping and begging to be changed.....

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    Here is how it was supposed to happen; remove the bolts from the front cover of the transmission. Extend the selector arm and pull the cover out. Drive out the shaft pin, and remove the selector. Install a new seal and re install everything.

    Here is what it really happened.

    The bolts, all except the two longest, came out nicely. The two longest, adjacent to the selector shaft, despite heat and fluid, gave up their heads instead of turning out. With two headless bolts I decided to do what I had done a few times before.... drill them out... All was going fine until the brittle cover decided to crack and break off at the bolt location. At that point I decided to carve out the cover so it could be freed. Last resort, but I didn't see much light at the end of the tunnel. I will be calling the Jacques hotline hoping he has another cover.

    Eventually, I was able to free the cover. I have spotted the pin which needs to be driven out, but before I damage anything else, what is the best method for driving it out?

    big mistake... Transmission cover destruction and the tale of the selector seal-att_1432685968165_img_20150526_170342.jpg

    Disgusted and ashamed.... Ben

  2. #2
    1000+ Posts daffyduck's Avatar
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    I think I got lucky on the last one of those that I did.
    Now that the bolts are exposed you can probably grab them with vice grip pliers and extract them; so at least there is that.

  3. #3
    1000+ Posts alan moore's Avatar
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    Quote Originally Posted by forzamacchi View Post

    Eventually, I was able to free the cover. I have spotted the pin which needs to be driven out, but before I damage anything else, what is the best method for driving it out?

    Click image for larger version. 

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    Disgusted and ashamed.... Ben
    Simply drive the pin out with a straight pin punch, using a smallish hammer. It comes out reasonably easily.
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    1000+ Posts Fordman's Avatar
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    Do you mean how to remove the "roll-pin" in the selector fork? I would just use a "parallel pin punch" with a slightly smaller o.d. than the pin. They usually tap through quite easily, and it looks reasonably well supported in that location. You would normally tap it right through, then to re-assemble just tap it in from front again. Put some rag or something around underneath it, you wouldn't want the pin to fall into the box! Also make sure it has enough room behind that shaft for the pin to go right through.

    Rennsteig Parallel Pin Punches with Sleeve (Pin Remover Tools) - 8 Piece Set - Hand Tool Pin Punches - Amazon.com

    I note on Wiki there is also a specialised "roll pin punch" which seems to have a small central projection to locate in the roll pin, but I have never used one of them.

    Note on removal, that one end of the roll pin probably has a nice small taper to assist in re-inserting the pin on re-assembly, ie, put it back in the same way it is now.

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    Fellow Frogger! forzamacchi's Avatar
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    Thanks Everybody... I bought a pin punch set and it came out quite easily. The shop even had a pin assortment I took home for replacement. Now it's time to find a new cover....

  6. #6
    COL
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    How badly damaged is the front cover?

    You could take it to a welding shop and get them to MIG or TIG it up for you, the run a drill though where the bolts go and dress up the outside with a file and emery paper.
    Regards Col

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    1000+ Posts schlitzaugen's Avatar
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    That said, alloys of that age are a pain in the butt to weld because of their high silica content, so perhaps the potential welder needs to be notified.
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    1000+ Posts daffyduck's Avatar
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    Find a new cover? Oh look what I have here.
    Attached Thumbnails Attached Thumbnails big mistake... Transmission cover destruction and the tale of the selector seal-1432732792433.jpg  
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  9. #9
    1000+ Posts daffyduck's Avatar
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    Location Los Angeles, United States
    Umm?
    I am 65 miles east.
    I can show you some really cool Citroens.

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    Quote Originally Posted by daffyduck View Post
    Find a new cover? Oh look what I have here.


    Those look like three-speed 'boxes from a 4CV or Dauphine, rather than a later R8 type 330 four-speed.

    Mind you, if it was me and even if I knew they were the wrong type, I'd still drive the 65 miles to look at really cool Citroens. :-)
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  11. #11
    1000+ Posts daffyduck's Avatar
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    One of those boxes is a four speed with a trashed bearing set. I was hoping the covers might be the same. They did not come from an R8.

  12. #12
    Too many posts! JohnW's Avatar
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    Quote Originally Posted by daffyduck View Post
    One of those boxes is a four speed with a trashed bearing set. I was hoping the covers might be the same. They did not come from an R8.
    Presumably a Dauphine Gordini (or maybe an early R8 (R1130) although the end of the box looks more like the D-G). Either way, not a 330. Those 4-speed housings are sought after by some folk in historic racing, as some clubman cars, in Oz at least, used them.
    JohnW

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