gearbox is jamming - nissan micra 1.2 '89

> >
> > Hi Alan,
> >
> > Thanks for your comment. Since a while now, I am just using 1st, 2nd and
4th
> > gear, except when I know I will have to stop again after a short
distance,
> > then I still use 3rd
> > gear. As you said, there is no problem when the car has stopped moving,
to
> > shift out of 3rd.
> >
> > I hope this will be enough to avoid problems. You said you will contact
a
> > gearbox specialist. Let me know please, what the outcome is.
> >
> > What exactly does '"3/4 synchro hub is cracked mean" ? Is it broken into
> > pieces ? I don't know what exactly the synchro hub is, and where this
damage
> > will
> > be located..
__________________________________________________ ____>

> The synchro hub is a specially shaped toothed ring that fits onto the
> main drive shaft in the gearbox. 3/4 means that it is the ring used
> when moving from 3rd to 4th gear. At the moment it sounds as if yours
> is just cracked and not broken into pieces as mine is.
>
> I must say that I am no expert when it comes to these things - the
> information I am getting is from my trusty Haynes Service Manual.
>
> If you want to fix the problem yourself, it will mean stripping the
> box completely and replacing the ring - something I wouldn't
> contemplate doing myself. My friendly expert is coming for the car on
> Wednesday morning. I'll ask him some more questions. It may be quicker
> and cheaper to get a secondhand box from a breakers and fit it. This
> would be much easier than stripping the box.
>
> Regards,
> Alan

Hi Alan,

Thanks again for the description. A friend of mine said there are different
ways synchronisation is achieved. I still can't picture it before me.

Rgds,

Carl