Lino,
Have you read this thread:
http://www.peachparts.com/shopforum/showthread.php?t=27603&highlight=transmission+rebuild
It does not apply to the B2 per say but contains a wealth of tranny info.

__________________
-Marty

1986 300E 220,000 miles+ transmission impossible
(Now waiting under a bridge in order to become one)

Reading your M103 duty cycle:
http://www.peachparts.com/shopforum/showpost.php?p=831799&postcount=13
http://www.peachparts.com/shopforum/showpost.php?p=831807&postcount=14