Hog Technologies STRIPE SH7500, Operation Manual

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Section 2 - Stripe Hog Systems
Hydraulic Manifold
The Hydraulic manifold is mounted to the chas-
sis below the UHP pump. Electric solenoid valves
activated by switches in the control panels direct
hydraulic pressure to the various components
in the waterblasting hydraulic system. It is also
equipped with a regulator between the low and
high pressure side of the manifold that is used
to adjust the low pressure setting. The solenoid
valves are a cartridge type design that are easily
replaced in the event of a failure.
Hydraulic Motors and Actuators
The charge water pump and spray bar thru-shaft
are powered by hydraulic motors. Internal com-
ponents of the motors are lubricated and cooled
by the hydraulic fluid that powers the motor. All
hydraulic motors have maximum pressure ratings
and RPM settings that should never be exceeded.
Most hydraulic motors are designed to rotate in
one direction. If a motor needs to be removed
for any reason, always make sure to mark the
hoses and ports so they will be installed in the
correct position. If the hoses are installed in the
wrong ports the motor will rotate opposite of the
designed rotation which will permanently damage
the motor.
Hydraulic Cylinders
Two types of hydraulic actuators are used in the
waterblasting hydraulic systems. Rotary, “Helac”
cylinders are used on the Hog Arm and conven-
tional ram type cylinders are used to raise the
debris tank and the optional lift arm.
Helac cylinders provide a broader range of move-
ment than conventional ram type cylinders. The
cylinders and hinged arm joints are integrated so
the joint bearings are lubricated by the hydraulic
fluid that powers the cylinders, eliminating grease
fittings at the joints and reducing maintenance.
Helac cylinders are sensitive to air. Consequently,
special procedures must be used to bleed air from
the cylinders when hoses or other hog arm hy-
draulic equipment is serviced.
The hydraulic cylinders used to lift the debris tank
or lift arm are equipped with special counterbal-
ance valves that prevent the tank from dropping
suddenly if a hose ruptures or a fitting fails.
All hydraulic systems and cylinders require special
procedures for bleeding air from the system after
servicing components or replacing hoses. Contact
Helac Hydraulic Cylinder On Hog Arm
Hydraulic Manifold, Solenoid Valves & Gauges
Hog Technologies if you need assistance in bleed-
ing the air from the hydraulic system.
Hydraulic Hoses
The hydraulic system operates at pressures of
up to 3,000 psi (207 BAR). Therefore, it is criti-
cal that the operator and maintenance personnel
inspect the hydraulic hoses, fittings and other
components frequently. A visual inspection of the
entire hydraulic system should be conducted each
day before operating the unit. Any hose or com-
ponent that is questionable or shows any sign of
deterioration, wear or leakage should be replaced