Upright SL20 Series User Manual

Page 5-4
Schematics - Hydraulic Schematic
SL20
5.3 H
YDRAULIC
S
CHEMATIC
Legend:
Hydraulic Schematic, 101180-020
DESIG-
NATION
NAME FUNCTION LOCATION
CV Check Valve Allows Depression Mechanism to
retract in drive mode
Hydraulic
Manifold
CYL1 Steering Cylinder
Provides force to turn front wheels
Frontofchassis
above drive
motors
CYL2 Lift Cylinder
Provides force to lift platform
Mounted under
upper boom
weldment
CYL3 Depression Mecha-
nism Cylinder
Extends or retracts DM bar
Frontofhydraulic
tank
CYL4 Break Cylinder Stops machine from moving while
parked
Above front tires
DVDR Priority Flow Divider Provides priority oil flow to
steering
Hydraulic
Manifold
FL1 Suction Strainer
Traps particles in hydraulic tank
Inside hydraulic
tank at outlet
FL2 Return Filter
Filters oil returning to tank
Back of hydraulic
tank
MOT Drive Motors (2) Provides tractive effort to move
platform
Front motor
mounts
PMP Pump
Provides hydraulic pressure for all
functions
On Electric motor
at left rear of
control module
RV1
Main Relief Valve Provides pressure protection to
pump, limits platform load
capacity.
Hydraulic
Manifold
RV2 Steering Relief
Valve
Provides pressure protection to
pump and steering components
when steering
Hydraulic
Manifold
RV3 Lift Relief Valve Provides pressure protection to
Lift components
Hydraulic
Manifold
TNK Tank Holds hydraulic oil Control Module
V1 Steering Right/Left
Valve
Provides directional control for
steering
Hydraulic
Manifold
V2 Lift Valve Provides oil control for drive or lift
functions
Hydraulic
Manifold
V3 Down/Emergency
Lowering Valve
Allowsoiltoreturntotank;
manually operated for emergency
lowering
Lift cylinder
V4 Depression mecha-
nism Retract Valve
Provides oil control for DM bar DM cylinder
V5 Depression Mecha-
nism Extend Valve
Provides oil control for DM bar
Hydraulic
Manifold
V6 Forward/Reverse
Valve
Provides oil control for drive or lift
functions
Hydraulic
Manifold
V7 Counterbalance
Valve
Prevents machine from running
away on slopes; cushions stops
Hydraulic
Manifold

Upright SL20 Series Specifications

General

Brand	Upright
Model	SL20 Series
Category	Lifting Systems
Language	English