13
255 Blankdraulic Installation Tool (HK1014)
6. Connect the
tool to the air
supply and
cycle it 20–30
times; watch
for air bubbles
escaping into
the bottle.
(Rock the tool
to free trapped
air.)
NOTE
:
Do not
allow air to
re-enter the
tool. When cycling the tool, hold the fill bottle as
shown in Figure 8 to prevent drawing in air.
7.
When bubbles stop accumulating, stop cycling tool.
Remove the fill bottle while tool is laying on its side.
8.
Install the check valve ball, guide, and spring.
Replace the plug
.
9. Turn
the tool so the front of the
head faces you. Use
a 3/32” allen wrench to back out (approximately 1/2
turn counterclockwise) the setscrew inside the plug,
shown in Figure 8
A
. (This ensures that the piston
remains in the full-forward position.)
Remove the relief valve plug; insert the relief valve
ball, guide, sleeve, and spring, and then re-insert the
plug.
10. Unlock the fill tool and check the fluid level (red line
indicator, Figure 7) in the reservoir
housing. Cycle
the tool with the stall nut attached and the retaining
nut locked in the full-forward position (“dead stall”).
NOTE
:
Dead stalling is not necessary if the
optional stall nut was not used; just cycle the tool.
The reservoir fluid level should not drop below the
red line on the reservoir housing.
11. Re-lock the
fill tool into the reservoir plunger
. Lay
the tool on its side and remove the bleed plug.
Insert
the fill bottle and add a few drops of fluid to the
reservoir; wait for air bubbles to escape, then remove
the fill bottle. (Push a pin or a scribe into the
hole
to check for trapped air bubbles.) Replace the plug.
(Figure 7)
12. Unlock the fill tool, cycle the tool as in step 10, and
check the fluid level in the reservoir housing.
The reservoir fluid level may drop slightly. If so,
repeat step 11 until, when the fill tool
handle is
touched, it has no pressure against it and it drops
out of the lock position, and the fluid level in the
reservoir housing
does not drop when the tool is
cycled.
NOTE
:
This usually requires 3 or 4 repetitions.
13. When the fluid level is sufficient, remove the fill tool
and stall nut. Install a nose assembly and pull several
fasteners to test function.
Fill and Bleed (continued)
WARNING
: Failure to re-lock the fill tool
will result in oil being ejected from the
head under pressure when topping off the
reservoir. Severe personal injury may result.
Figure 8a
114530 Relief
Valve Plug Assy.
Figure 8
