Hog Technologies Stripe Hog SK2000, Operation Manual

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Stripe Hog Systems
2.6 Thru-shaft, Spray Bars,
Protectors And Nozzles
Thru-shaft Motor
The hydraulic powered thru-shaft motor rotates
the spray bar on the blasting head assembly. The
center of the rotating shaft is drilled to allow high
pressure water to pass through the shaft to the
spray bar. A specially designed swivel seal and
brass backup ring create a water tight, high pres-
sure seal at the connection of the high pressure
hose to the thru-shaft. The hose is secured to
the rotating shaft housing by the swivel nut. The
swivel nut is hand tightened only. If the nut
becomes loose, the hose will wobble and damage
the swivel seal. Additionally, if the swivel nut is
overtightened by using a pipe wrench or pliers, the
swivel seal will be damaged. The swivel nut must
1. Swivel Nut
2. Swivel Seal Weep Hole
3. Thru-shaft Cover
4. Grease Fitting
5. Speed Sensor
6. Brass Backup Ring
7. Swivel Seal
1
3
4
5
2
6
7
Thru-shaft Motor Components
Swivel Seal & Brass Backup Ring
be checked daily to ensure it is tight and that the
swivel seal is not leaking. Any water dripping from
the weep holes just below the swivel nut while the
system is pressurized indicates the seal is leak-
ing and must be replaced. Operating the blasting
head with a leaking swivel seal will cause complete
failure of the seal, stopping blasting operations.
The RPM of the thru-shaft motor is controlled by
the HEAD ROTATION speed dial on the switch
console. A speed sensor on each thru-shaft mo-
tor housing continuously monitors the RPM of the
thru-shaft/spray bar and displays the speed on the
LED HEAD ROTATION speed gauge on the switch
panel. During blasting operations, the operator
can monitor the RPM of the spray bar and make
adjustments as necessary.