hi, i drive a 2000 model hino GH1j.
there is air leaking from the rear of the selector mounted on the side of the gearbox.
can some body tell me how to fix it please
You Aussies and your weird Hinos. I've never seen one of those. I'd head over to your dealer and get an exploded view of that thing, and see if seals/ o-rings are available separately.