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Thread: DS20 gearbox

  1. #26
    Fellow Frogger! badabec's Avatar
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    Hello, I daren't bore my wife with my latest creation, so you lot will have to suffer...

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    The Citroen manuals show an open ended spanner to remove the input shaft bearing with no indication of how to re-tighten to its specified torque.

    Here is the socket I made from a track rod end socket and some 'gauge plate' or tool steel. I'm still waiting for the bearing, then I'll see how good my welding is.




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  2. #27
    Fellow Frogger!
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    Keep us posted - that's meant to be a hefty nut to undo......
    1968 DS21bvh Pallas in Gris Palladium

    Restoration blog: https://ds-restoration.blogspot.co.uk

  3. #28
    Fellow Frogger! citroenthusiast's Avatar
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    Looks pretty good. Here is one that I got from some fellow in Germany years ago (for a 5-speed). You will still have to come up with a way to keep the transmission itself from moving. Do NOT use a pipe inserted into the speedometer socket. The wall will not take the stress. As I mentioned earlier, a pipe bolted across the top of the open transmission in place of the cover plate worked for me.

    ..DS20 gearbox-speedo-nut-wrench.jpg
    Cheers,
    John T.

    54 TAV Legere; 61DS19 LHM BVH (son's); 71DS21 BVH; 73SM 3.0; 73SM EFI (Megasquirt); 73SM 3.0 (other son's)

  4. #29
    Fellow Frogger! citroenthusiast's Avatar
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    Quote Originally Posted by Budge View Post
    I'm refitting my clutch and need an alignment tool. As peter says, a spigot shaft is ideal. A rather optimistic question:

    I have a spare gearbox I can use bits from: will the spigot shaft disengage from the circle and the input shaft if I give it a sharp tug? In other words is the circlip just acting as a locking or locating ring? If so, can the spigot shaft be shoved back into it's correct place afetr removal?

    Alternatively, would i need to dive into the box to remove the circlip?
    I have successfully pulled the input shaft with a slide hammer. That act will often destroy the circlip, but you may not care. Stand the transmission on end and dribble a little oil down the shaft first. I believe inside part of the input shaft is solid, so I don't think tearing down the transmission will help anyway.
    Cheers,
    John T.

    54 TAV Legere; 61DS19 LHM BVH (son's); 71DS21 BVH; 73SM 3.0; 73SM EFI (Megasquirt); 73SM 3.0 (other son's)

  5. #30
    Fellow Frogger! badabec's Avatar
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    Quote Originally Posted by citroenthusiast View Post
    Looks pretty good. Here is one that I got from some fellow in Germany years ago (for a 5-speed). You will still have to come up with a way to keep the transmission itself from moving. Do NOT use a pipe inserted into the speedometer socket. The wall will not take the stress. As I mentioned earlier, a pipe bolted across the top of the open transmission in place of the cover plate worked for me.
    Hello, I used your system. A four foot pipe bolted to the gearbox case and a milled down spanner extended with another four foot pipe. I did remember to tap back the edge of the nut where it is peened into the shaft. It didn't really have any say in the matter!

    That is a nice socket, looks fully machined from billet. I went the lazier, cheapskate route!

  6. #31
    Fellow Frogger! ds21bvh's Avatar
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    The other option is to loosen the nut while the box is still in the car.... this is how I've done it in the past.
    John - do you still have the contact for that socket - it's a beauty...
    Cheers,
    Mark...

  7. #32
    Fellow Frogger! citroenthusiast's Avatar
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    Quote Originally Posted by ds21bvh View Post
    John - do you still have the contact for that socket - it's a beauty...
    Cheers,
    Mark...
    I sent you a p.m. with what I remember...
    Cheers,
    John T.

    54 TAV Legere; 61DS19 LHM BVH (son's); 71DS21 BVH; 73SM 3.0; 73SM EFI (Megasquirt); 73SM 3.0 (other son's)

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