HK4400
•
Turn knob clockwise (CW) all the way
to close needle valve. This will
separate the brake release circuit from
the rest of the hydraulic system.
•
Using the hand pump, pressurize the
brake release circuit to 350 psi. A
pressure gauge is mounted to the
valve block to display the brake
release system pressure.
•
When moving machine, keep an eye
on the pressure gauge to ensure that
the pressure remains above 250 psi.
•
After moving is complete, turn the
knob on the needle valve counter-
clockwise (CCW) all the way to relieve
the pressure.
Opening the By-Pass Valve
•
The by-pass valve is located on the
bottom side of the propulsion pump
that is directly coupled to the engine.
The valve can be accessed below the
engine compartment.
•
The by-pass connects the ports A-B
and must be used only in case of
emergency and only for moving
machine short distances.
PRECAUTION
By-pass valve is intended for moving a
machine for very short distances at very
slow speeds. It is not intended as a tow
valve.
•
To open, turn by-pass valve counter-
clockwise (CCW) two full turns using a
17 mm wrench.
PRECAUTION
To avoid leakage, do not exceed two CCW
turns of the screw.
•
After moving machine is complete,
close the by-pass by turning valve CW.
HAND PUMP
KNOB
PRESSURE
GAUGE
25
Содержание HK 4400
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