13
2022 and ERT9 series Pneudraulic Installation Tools (HK1021)
Fill and Bleed
This section documents the “bleed-&-fill” procedure.
For component identification, see
Figures 9, 10, &
11.
ReQuIReD eQuIPMeNT
•
DEXROn
®
III or equivalent ATF (See
Specifications
for more information.)
•
Shop air-line with 90 psi (
6.2 bar
) max.
•
Air regulator
•
Fill Bottle Assembly (P/n 120337, included with
tool)
• Large flat-blade screwdriver
•
Stall nut (P/n 124090
or 125340, optional)
•
nose assembly
•
Fasteners (optional)
PREPARATIOn
•
Install air regulator in
the air-line and set the
pressure to 20–40 psi
(
1.4–2.8 bar
).
• Add an approved hydraulic fluid to the fill point
of the fill bottle.
TO BlEED AnD FIll THE TOOl:
1.
Lay the tool on its side with the fill port facing
up and remove the bleed plug from the fill port.
2.
Connect the tool to shop air-line. If fluid is
present, hold the tool over a suitable container
with fill port facing into container. Cycle the tool
several times to drain old fluid, air, and foam.
(Figure 10)
3.
Screw the fill bottle into the fill port.
4. Stand the tool upright on a bench. Trigger the
tool slowly (20–30 cycles), and bend the fill
bottle at a right-angle (90°) to the tool. (Figure
11)
5. When air bubbles stop accumulating at top
of the bottle, stop cycling the tool. When the
trigger is released, the pull piston returns to the
idle position (full-forward).
6. Disconnect the tool from the air-line. lay the
tool on its side and remove the fill bottle. Top
off the fluid in the fill port, and install and
tighten the bleed plug.
7. Connect the air-line to the tool and measure the
stroke as described in
Measuring Tool Stroke
.
If the stroke is less than specified
, remove the bleed
plug and add fluid. Re-insert the bleed plug and
recheck the stroke.
8.
Increase the air pressure to specifications.
Install two fasteners to check the function and
installation in a single stroke, or cycle the tool
with a stall nut fully threaded onto the piston
to load up the tool. Measure the stroke again.
Remove the plug and add fluid. Re-insert the
plug, and cycle and measure again. Repeat this
process until the stroke meets the recommended
minimal length.
DEXRON
is a registered trademark of General Motors Corp.
WARnInG: Avoid contact with hydraulic
fluid. Hydraulic fluid must be disposed of in
accordance with local regulations. See MSDS
for hydraulic fluid shipped with tool.
120336
Fill Bottle
Fill Point
120004
Cap
120337 Fill Bottle Assy
Figure
9
WARnInG: Air pressure must be set at
20–40 psi (
1.4–2.8 bar
) to prevent possible
injury from high-pressure spray.
If the bleed plug is removed, the fill bottle
must be in place before cycling the tool.
Figure
10
CAUTIOn
: All fluid must be purged from
the tool before refilling. The tool stroke will
be diminished if the fluid is aerated.
For optimal performance, refill with a fluid
that is recommended in
Specifications
.
Figure
11
