The Stovebolt Site Forums The Parking Lot Big Bolts 2 speed rear - where to find diaphram?

Good morning, this is my first posting on your site and firstly thank you for accepting my request.

My neighbor Barry has a 1954 Chevrolet farm truck with a Timken 2 speed diff and although its still working, is showing signs of age cracking on the diaphram.
Its a Timken with the diaphram measuring 7 inches in diameter, a 3 inch hole in the center for the two pressed metal actuator plates and from the side a 1 inch step up for the in/out movement.
To this point l have been tasked with locating a new replacement, with little to no success.

Anyone here knw where l can direct Barry to for his purchase?

Thanks in advance for your assistance.

Cheers
David Dare
Victoria Australia

Hy DAVE_AUSTRALIA, welcome, the original part number for the diaphragm was 3847058 maybe a search of Ebay might turn one up, good luck.

Dave australia Chapman Chevrolet in Tempe Arizona carries that 3847058 diaphragm .

A big shout out to those above for your assistance, 3B,David Braley & fixite7.
I will be ordering that part either ebay or chev dealer (if they respond).
Cheers again
David way down under in Aus.

Dave Australia Glad to help,shifted mine several times today...big fun when she shifts !!