How long does it take to rebuild the valve body on a 1994 540i ZF 5HP30 transmission? My tech says he gets 5.5 hrs, but his people have done this many times and can probably finish in less time. I am wondering how long it takes a DIY'er who has never done this before. I will consider doing it myself as long as I am not getting into another multi-weekend job like changing the evaporator on my 300E.

Hopefully some of you guys who have done this for the first time may reply?