Ah! You mean that
little piece that spans along the back (yellow arrow) and fits in the little sprockets on the cap?
When I ordered
my new cylinders, they didn't have them. However, I didn't seem to need it based on the procedure I used to install the new wheel cylinders and the relined pads.
NOTE: The
second pic shows the difference between a front and back wheel cylinder for a 1 Ton.
