Scru S ste
C lin rical
Service Manual – SC8000
Scru i t
C lin er it
n ine S ut
When the engine is shut
off, the de-energized
Scrub
Cylinder Lock L6
valve
holds the oil pressure
from the bottom port on
the
Scrub Lift Cylinder
to
support the
Weight of The
Scrub Deck
and prevent it
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Scru i t
C lin er
it n ine unnin
When the engine is running
but the scrub system is off, the
Accessory Pump
pumps the oil
through the
Steering Unit
and to
the
Scrub Brush Proportional Up L7
valve, the
Scrub Brush Proportional
Down L5
valve and the
Scrub
Cylinder Lock L6
valve.
The
Brush Proportional Up L7
valve provides adequate oil
pressure to the bottom port on
the
Scrub Lift Cylinder
, through
the
Scrub Cylinder Lock L6
valve,
to raise the scrub deck.
The de-energized
Scrub Brush
Proportional Down L5
valve
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port on the
Scrub Lift Cylinder
Any oil from the top port on the
Scrub Lift Cylinder
is directed to
the
Reservoir
.
The de-energized
Scrub Cylinder Lock L6
valve holds the oil pressure from the bottom port on the
Scrub Lift
Cylinder
to keep the scrub deck in its raised position.
Scrub
Cylinder
Lock L6
Scrub Brush
Proportional
Down L5
Reservoir
Accessory
Pump
Steering
Unit
Scrub Brush
Proportional
Up L7
Scrub Lift
Cylinder
Weight of
Scrub Deck
Scrub
Cylinder
Lock L6
Scrub Lift
Cylinder
