13
202 series Pneudraulic Installation Tools
(HK938)
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
s
PeciFicATions
for more information.)
- Shop air-line with 90–100 psi (
6.2–6.9 bar
) max.
- Air regulator
- Fill Bottle Assembly (P/N
120337
, supplied 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 bleed plug from the fill port.
2.
Connect the tool to the shop air. 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)
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).
5.
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.
6.
Connect the air-line to the tool and measure the
stroke as described in
m
eAsuring
T
ool
s
TroKe
. If
the stroke is less than specified, remove the bleed
plug and add fluid. Re-insert the bleed plug and
recheck the stroke.
7.
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 specification.
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
F
Igure
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 bleed plug (55) is removed, the fill bottle
must be in place before cycling the tool.
CONTAINER
(Discard fluid)
F
Igure
10
CAUTION
: Purge all fluid 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
s
PeciFicATions
.
F
Igure
11
