DIY gearbox modding?

[cliosportcraig]

I've got a JC5 130 without the speedo hole or worm drive, at home with pretty much every tool available is it possible to change casings for a knackered JC5 with the hole and also to fit the worm drive part?

Anything to look out for flying out when I open up the casing?

I wanna fit these parts

 

[Mark One]

good idea. Hope it works. Free bump

 

[Gaz.]

Things will only fly out if nothing's held with circlips, which I doubt.

Make sure you know EXACTLY where everything goes, or you'll have your gearbox apart for the next 2 years trying to make it turn again.

 

[Hutchie]

make sure you have two m10 bolts to go in where the two main shafts go through the outer casing as there are two sprung ball bearing encased in there, if they pop out i guarentee the air will be blue lol