no particular position, just to let you see the pivot point so you spot where the pin is - likely require a proper sized pin punch and some judicious hammering .... but unless you have another diaphragm in hand ....

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature we find it attached to the rest of the world" John Muir
"When we tug a single thing on an old truck, we find it falls off" me
Some TF series details & TF heater pics & Rust-a-holics Unanimous parking lot