212 Series Tooling Alcoa Fastening Systems
14
Fig. 3.4
FILLING AND BLEEDING PROCEDURE (CONT.)
7. Stand tool upright on bench. While
actuating the trigger slowly (20 - 30
cycles), bend fill bottle at right angles to
tool - - see FIGURE 3.4. Observe that air
bubbles emerge from tool. When bubbles
are no longer observed, cycling may be
discontinued.
8. When trigger is released, pull piston
returns to idle position (full forward).
Disconnect tool from airline with piston
full forward.
9. Lay tool on its side. Remove fill bottle.
Top off fluid in fillport. Install bleed plug
and tighten with screwdriver.
10.Connect airline to tool. There is a choice
of two procedures for measuring the
stroke - - with and without a stall-nut - -
see appropriate section and follow the
selected procedure. If stroke is less than
specified, remove bleed plug and top off
fluid. Reinstall bleed plug.
11. Install two fasteners to check function
and installation in a single stroke, or
cycle tool with stall nut fully threaded
onto piston. Measure stroke again.
Remove plug and top off fluid. Reinstall
plug and cycle again - - measure again.
Continue this process until stroke meets
minimum requirements.
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