Trevi therm remove knobs
Remove cap on the top of the knob then remove screw, pull theknob forward then the carrier and the shroud, this should then reveal thegearbox cover (Part 11)which is held inplace by two screws on the left and right of the cover as you look at thedrawing (Not the top and bottom)
http://www.showerdoc.com/trevi-therm-post-1997-shower-spares
Answered 11 years ago by The Shower Doctor
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Trevi Therm Built In - Post 1997 Shower Spares
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