[TR] Steering box Cam Gear replacement

[Randall]

The shaft is splined.  The worm is pressed on over the splines, and then the
end of the shaft is rolled over (like a big rivet) to secure the worm.  Moss
suggests heating to approximately 350F and using a press both ways (on and
off).  With enough force, the rolled over section will straighten out and
(hopefully) be reusable.

I forget where I got this photo, might have been from Mark Macy:
https://i.imgur.com/bNIGZxU.jpg

Worth noting that the factory did not consider the worm to be field
replaceable.  They only sold it already installed on the shaft.

Also worth noting that the worm is different for LHD vs RHD.  Make sure you
get the right one, or your steering wheel is going to work backwards!

-- Randall 

> In a Cam Gear box ( TR2-3), anyone know how the cam gear is 
> attached to the shaft?