2012 series Tooling (HK969) Alcoa Fastening Systems
14
Bleed Procedure for Partially Filled Tool
in Field Use:
1. Disconnect tool from airline. With fillport facing
up, lay tool on its side.
2. Remove bleed plug from bleed port.
3. Hold tool over suitable container with fillport fac-
ing into container.
4. Connect tool to air line. Cycle tool several times
to drain the old fluid, air and foam.
5. Screw fill bottle into fillport.
6. See WARNING
above. With air pressure set at
20-40 psi, connect airline to tool.
7. Stand tool upright on bench. While actuating the
trigger slowly (20-30 cycles), bend fill bottle at
right angles to tool. Figure 4.2. 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 air line to tool. There is a choice of two
procedures for measuring the stroke: With and
without a stall-nut. S
EE HOW TO MEASURE STROKE
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 instal-
lation 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 require-
ments.
F
F
ILLING
ILLING
AND
AND
B
B
LEEDING
LEEDING
P
P
ROCEDURE
ROCEDURE
(continued)
WARNING
Air pressure MUST be set to 20-40 psi to
prevent possible injurious high pressure
spray.
NEVER CYCLE TOOL WITHOUT:
BLEED PLUG TIGHTENED
FILL BOTTLE TIGHTENED IN TOOL, or
FILLPORT HELD OVER A RECEPTACLE Figure 4.1
When not properly contained any fluid pres
-
ent in tool will spray out. Severe injury may
result.
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