Hog Technologies SK5500, Operation Manual

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Section 2 - Stripe Hog Systems
Dirt Shield
FELT GASKET
Dirt Shield & Felt Gasket Typical Dirt Shield Installed
Typical Wear Brush & Wear Brush Clamps
Wear Brush
The wear brush clamped to the bottom of the
shroud provides a partial seal between the shroud
and pavement. The wear brush regulates vacuum
air flow into the shroud and reduces the amount
of debris and water exiting the blasting head dur-
ing water blasting operations. The wear brush is
an important safety feature of the blasting head
system. It must be adjusted as it wears and re -
placed as necessary. The brush assembly should
be adjusted so the brushes are always making
light contact with the pavement.
To adjust the wear brush, lower the Hog Head to
the ground and note the gap between the wear
brush and the pavement. Loosen the brush clamps
on the shroud, then slide the wear brush enough
to eliminate the gap. Tighten the clamps and re-
check. Readjust if necessary.
Refer to the Maintenance section of this manual for
additional information on adjusting and replacing
the wear brush.
Dirt Shield
The dirt shield is a felt gasket and threaded stain-
less steel flat washer that protects the thru-shaft
seals and bearings from dirt and debris during high
pressure blasting operations. It is located between
the spray bar and the shroud. The shield and felt
gasket protects the shroud from damage while
the spray bar is rotating. The dirt shield should be
inspected prior to the start of each shift as part of
the pre-start procedure and replaced if it becomes
worn or damaged. When installing a dirt shield,
it should be adjusted finger tight. If it is set too
tight it will prevent the spray bar from rotating.
Refer to the Dirt Shield Installation procedure in
the Maintenance section of this manual for instruc-
tions on replacing the dirt shield.