Castle AT-8 Diagnostics Manual - Manual (Page 12)

How To…
8.40
Tightening the PEM Nut
The cylinder lever is held against the body of the cylinder with a PEM nut. This nut can be tightened
by first removing the cylinder and then tightening up the nut.
SOLUTION STEPS:
1. Remove the arm from the upper bracket by removing the bolts in the bracket. This can be done
with the arm on the machine, but will require a second person to hold the bottom bracket firmly
against the table.
2. Turn off the air and remove the airline for the cylinder with the loose lever. The line is connected
to the cylinder by a push-in fitting. Simply push the outer ring in as you pull the airline.