Scru S ste
C lin rical
Service Manual – SC8000
Scru i t
C lin er n
it n ine unnin
When the engine is running and
the scrub system is switched on, 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 energized
Scrub Brush
Proportional Up L7
valve provides
oil pressure ranging from
approximately 750 to 779 psi
(depending on the scrub pressure
selected) to the bottom port on the
Scrub Lift Cylinder
.
The energized
Scrub Brush
Proportional Down L5
valve
provides oil pressure ranging
from approximately 333 to 499 psi
(depending on the scrub pressure
selected) to the top port on the
Scrub Lift Cylinder
.
The energized
Scrub Cylinder
Lock L6
valve opens to allow
ELGLUHFWLRQDORLOÁRZWKURXJKWKH
valve.
Note: The pressure differential between what the
Scru rus ro ortional
valve and the
Scru rus ro ortional o n
valve send to the
Scru i t
C lin er
, and the weight of the
scrub deck all work in conjunction to produce the three scrub pressures.
Scrub
Cylinder
Lock L6
Scrub Brush
Proportional
Down L5
Reservoir
Accessory
Pump
Steering
Unit
Scrub Brush
Proportional
Up L7
Scrub Lift
Cylinder
