Hydraulics
Section 4 - Schematics
Page 4-8
114101-000 X26 Ultra Narrow - Service Manual
4-2 H
YDRAULICS
Legend:
066781-020 Hydraulic Schematic
Figure 4-7:
Hydraulic Components Location
Reference
number
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
Front of Chassis above Drive Motors
CYL2 Lift Cylinder
Provides force to lift platform
Elevating Assembly
CYL3 Depression Mechanism Cylinder (2)
Extends or retracts depression mechanism bar
Control Module and Power Module
DVR1
Priority Flow Divider
Provides priority fluid flow to steering
Hydraulic Manifold
DVR2
Flow Divider
Divides fluid to drive motors in parallel drive mode
Series/Parallel Manifold
FL1
Suction Strainer (Filter)
Traps particles in hydraulic reservoir
Inside Hydraulic Reservoir at outlet
FL2
Return Filter
Filters fluid returning to reservoir
Control Module
MAN
Hydraulic Manifold
Provides fluid distribution to cylinders, brakes, and series parallel reservoir
Control Module
MOT
Drive Motors (2)
Provides tractive effort to move machine
Front Wheels
OR
Orifice
Restricts fluid return from emergency lowering valve
Lift Cylinder
PB
Parking Brake (2)
Stops machine from moving while parked
Internal to Drive Motors
PMP
Pump
Provides hydraulic pressure for all functions
Control Module
RV1
Steering Relief
Provides pressure protection to pump and steering components when steering
Hydraulic Manifold
RV2
Lift Relief Valve
Provides pressure protection to lift system
Hydraulic Manifold
RV3
Main Relief Valve
Provides pressure protection to hydraulic system
Hydraulic Manifold
RES
Reservoir
Holds hydraulic fluid
Control Module
SP
Series Parallel Valve Manifold
Provides fluid distribution to drive motors
Chassis, between Modules
V1
Steering Right/Left Valve
Provides directional control for steering
Hydraulic Manifold
V2A
Lift Valve
Provides fluid control for drive or lift functions
Hydraulic Manifold
V2B
Down/Emergency Lowering Valve
Allows fluid to return to reservoir; manually operated for emergency lowering
Lift Cylinder
V3A
Depression Mechanism Extend Valve
Provides fluid control for depression mechanism bar
Hydraulic Manifold
V3B
Depression Mechanism Retract Valve (2)
Provides fluid control for depression mechanism bar
Depression Mechanism Cylinders
V4
Forward/Reverse Valve
Provides fluid control for drive or lift functions
Hydraulic Manifold
V5
Series/Parallel Valve (2)
Controls drive speed
Series/Parallel Manifold
V6
Counterbalance Valve (2)
Provides dynamic braking
Hydraulic Manifold
FRONT
V2B
Emergency
Lowering
Valve
SP
Series Parallel
Manifold
CYL3
Depression
Mechanism
Cylinder
CYL1
Steering
Cylinder
CYL2
Lift
Cylinder
MOT
Drive
Motor
PMP
Pump
RES
Hydraulic
Reservoir
FL2
Return
Filter
MAN
Hydraulic
Manifold
Control
Module
Power
Module