[Ascanio]

Originally Posted by grannyknot

I`ve spent a lot of time myself hunting for a rebuild kit, have never found one.
https://metricmechanic.com/
is one of the few companies that rebuild the 420G, they may sell you some parts.
You could also try, https://diffsonline.com/getrag-6-spe...l#.YCQ0ii1h1u0
This is a vid from MM disassembling 3 420G`s

Great info! Thanks
Do you know if they work on the ZF type H as well?