Air-Actuated Hydraulic Swaging Unit (AHSU)
Setup and Operating Instructions 5
9. Release the air inlet valve handle.
Note: Releasing the air inlet valve handle too
soon may result in an insufficiently preswaged
assembly.
10. Depress the nut retainer to remove the
preswaged assembly.
11. Install the preswaged assembly into the fitting
body. Turn the nut onto the fitting body until it is
finger-tight.
12. Mark the nut at the 6 o’clock position.
13. While holding the fitting body steady, tighten
the nut one-half turn until the mark reaches the
12 o’clock position.
Nut retainer
Gauging Instructions
Position the Swagelok AHSU gap inspection gauge
adjacent to the gap between the nut and body hex.
■
If the gauge will not enter the gap, the fitting is
sufficiently tightened.
■
If the gauge will enter the gap, additional tightening
is required.
Note: 3-sided AHSU gap gauge is for fractional
fittings.4-sided AHSU gap gauge is for metric
fittings.
Inspect the fitting with a gap inspection gauge
Tightening is required
Sufficiently tightened
AHSU gap
inspection gauge
