Schematics
X-Series Work Platform6-6
Section
6.3
Table 6-4: Hydraulic Schematic Legend, X20N, X20W, X26N
REFERENCE
DESIGNATION NAME FUNCTION LOCATION
V2 Valve, Reverse Prevents machine Right front of
Counterbalance from running away Manifold Block,
on slopes and lower unit.
cushions stops.
V3 Valve, Forward Prevents machine Right front of
Counterbalance from running away Manifold Block,
on slopes and upper unit.
cushions stops.
V4 Valve, Drive/Lift Provides control of Top center rear of
oil for Drive or Lift Manifold Block.
functions.
V5 Valve, Forward/ Provides control of Top of Manifold
Reverse oil for Forward or Block, towards
Reverse drive. right side.
V6 Valve, High Speed Controls oil flow into Top left center of
Drive and Lift circuits Manifold Block.
by dumping oil
back to tank.
V7 Valve, Down Allows oil to flow Mounted on base
and Emergency out of Lift Cylinder of Lift Cylinder.
Lowering to Tank, manually
operated for
Emergency Lowering.
V8 Valve, Drive Allows oil to flow to Top right center of
Dump Forward/Reverse Manifold Block
Valve for Drive towards front.
operation. During Lift,
drive circuit oil is
returned to tank.
V9 Valve, Pothole Allows oil pressure to Inside Control
Protection retract Pothole Module.
protection cylinders
when energized.
REFERENCE
DESIGNATION NAME FUNCTION LOCATION
CYL1 Cylinder, Steering Provides force Under Chassis
to turn front wheels. at front of machine.
CYL2 Cylinder, Brake Stops machine from Rear of machine
moving while parked. between wheels.
CYL3 Cylinder, Lift Provides force to Inside the Elevating
lift Platform. Assembly.
CYL4 Cylinder, Cushion Provides smooth Mounted to right
starting and stopping side of Hydraulic
when driving. Tank.
CYL5 & Cylinder,Pot Hole Provides power to On one side of
CYL6 protection extend & retract Power & Control
Pothole protection Modules.
tubes.
FL1 Filter Filters oil returning Mounted to
to Tank. Hydraulic Tank.
FL2 Suction Screen Traps particles in Inside Hydraulic
Hydraulic Tank. Tank at outlet.
MOT1 Drive Motor Provides tractive On left front
effort for work Steering Spindle.
platform.
MOT2 Drive Motor Provides tractive On right front
effort for work Steering Spindle.
platform.
ORF1 Orifice, Brake Delays the Under rod end
engagement of the fitting of Brake
Brake Cylinder. Cylinder.
ORF2 Orifice, Down Controls the Under fitting
platform rate of on base of Lift
descent. Cylinder.
ORF3,4 Orifice, Cushion Controls drive Inside each end of
Cylinder cushion rate. Drive Cushion
Cylinder.
PMP Duplex Pump Supplies hydraulic Inside left Chassis
oil flow for all Module, right
functions. front.
RV1 Valve, Main Provides over Center front of
Relief pressure protection to Manifold Block.
Pump and limits
Platform lifting
capacity.
RV2 Valve, Steering Provides over Lower left front of
Relief pressure protection Manifold Block.
to steering
components when
steering.
RV3 Valve, Lift Provides over In-line valve
pressure protection mounted on hoses
to high side of Pump between Pump
and. and tank.
RV4 Valve, Lift Provides over In-line valve
pressure protection mounted on hoses
to low side of Pump between Pump
and. and tank.
V1 Valve, Steering Provides directional Left side of
control for Steering Manifold Block.
Cylinder.
6.3 Hydraulic Schematic
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