Nilfisk-Advance 7765 Service Manual page 66

Service Manual – Advance 7765 / Nilfisk CR1500
Scrub Deck Up with Engine Shut Off
Power Steering
Cylinder
L
Power
Steering
Unit
3.1
CIR
1500
PSI
T
When the scrub deck is raised and the engine is shut off, the check valve in the de-energized
valve holds the oil pressure from the bottom port on the
Lock Up Solenoid (9)
supports the weight of the
R
T
P
To Squeegee
Vacuum Motor
Reservoir
when in its retracted position to prevent it from "floating down".
Scrub Deck
Squeegee
Cylinder
Lock Up (10)
Control
Valve
Squeegee Check Valve
270 PSI
Cylinder
Solenoid (7)
Scrub Brush
Solenoid (8)
Scrub Brush
Scrub Brush
Solenoid (6)
Lock Up
Solenoid (9)
P
8.2 GPM
1.5 GPM
Auxiliary
1.02
Pump
CIR
Scrub Deck Cylinder
Scrub System
To and From
Squeegee Hydraulic
Deck Cylinder
C3
Scrub
Deck
Cylinder
C2
C1
Scrub Deck
Locked Up
Scrub Brush
. This
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