Mower deck 165 Hydro Deck Arm & Sheave (pulley)

[namari]

Hi everyone, I picked up an older JD 165 Hydro for restoration the other day. The arm for the deck is missing the sheave and I'm having a hard time finding a replacement. The stem is 2 1/4" from the base of the arm and the hole that fits into the deck pin is 5/8". It does not have the common 15mm bolt that holds it on, but rather some kind of adapter that fits on top that keeps the double sheave (pulley) on. I'm going to try to attach pictures:



Any guidance to where I can get a replacement for this would be MUCH appreciated! Thank you.

Nate

 

[namari]

Here's a better picture of a deck with the correct arm installed:



Even a part number would be helpful. Thank you!