14
2013 & 2014 series Pneudraulic Installation Tools
(HK978)
The fluid level may drop slightly. If so, repeat these steps
until the fluid level does not drop when the tool is cycled.
NOTE
:
This usually requires 3 or 4 repetitions.
When the tool stroke is as recommended:
a. Increase the air pressure according to the tool
specification.
b. Install two fasteners to check function and
installation in a single stroke (or cycle the tool with
the stall nut fully threaded onto the piston).
c. Re-measure the stroke.
Continue this process until the tool stroke is at the
minimum requirement.
BLEED PROCEDURE FOR PARTIALLY FILLED TOOL
IN FIELD USE
1. Disconnect
the tool from the
air supply.
Lay tool on
its side with
fill port facing up
.
2. Remove the bleed plug from the fill port, and
position the fill port over suitable container. (Figure
4)
3.
Connect the tool to the air supply and cycle it several
times to
drain fluid, air, and foam.
4. Screw the fill bottle into the fill port.
5.
Connect the tool to the air supply, with the pressure
set at 20–40 psi (
1.4–2.8 bar
).
6. Stand tool upright. While slowly actuating the trigger
(20
–
30 cycles), attach the fill bottle at a right angle
(90
°
) to the tool (Figure 5) and watch for escaping air
bubbles.
7.
When air bubbles stop accumulating in the fill bottle,
stop cycling the tool.
When the trigger is released,
the
pull piston returns to
the
idle (full forward)
position. Disconnect
the tool from the
air supply.
8. Lay the tool on its side, and remove the fill bottle.
Carefully add fluid to “top off” the fluid in the fill
port. Insert and tighten the bleed plug.
9.
Connect the tool to the air supply to check the tool
stroke.
NOTE
:
There are two procedures for measuring
tool stroke: with and without a stall nut. See
Measuring Tool Stroke
.
If the tool stroke is less than the recommended minimum
length, remove the bleed plug and add fluid. Then
re-insert the bleed plug and re-check the stroke.
The fluid level may drop slightly. If so, repeat these steps
until the fluid level does not drop when the tool is cycled.
NOTE
:
This usually requires 3 or 4 repetitions.
When the tool stroke is as recommended:
a. Increase the air pressure according to the tool
specification.
b. Install two fasteners to check function and
installation in a single stroke (or cycle the tool with
the stall nut fully threaded onto the piston).
c. Re-measure the stroke.
Continue this process until the tool stroke is at the
recommended minimum length.
Fill and Bleed (continued)
Before cycling the tool
, make sure the:
• bleed plug is tightened in the fill port, or
• fill bottle is securely attached to the tool
(if the bleed plug has been removed), or
• fill port is held over a container.
(Figure 5)
