Upright TM12 Service Manual page 80

Hydraulic Schematic
4-2 H
YDRAULIC
Legend: 107015-001 Hydraulic Schematic Legend
DESIGNATION NAME
Allows Depression Mechanism to
CV Check Valve
Provides force to turn front
CYL1 Steering Cylinder
CYL2 Lift Cylinder Provides force to lift platform
Depression
CYL3 Mechanism Extends or retracts DM bar
Cylinders (2)
Stops machine from moving
CYL4 Brake Cylinder
FC Flow Control
Priority Flow Provides priority oil flow to
FD
Divider
FL1 Suction Strainer Traps particles in hydraulic tank
FL2 Return Filter Filters oil returning to tank
Provides tractive effort to move
MOT Drive Motors (2)
ORF Down Orifice
Provides hydraulic pressure for
PMP Pump
Provides pressure protection to
RV1 Main Relief Valve
Provides pressure protection to
Steering Relief
RV2 pump and steering components
Valve
TNK Tank
Steering Right/ Provides directional control for
V1
Left Valve
Provides oil control for drive or
V2 Lift Valve
Allows oil to return to tank;
Down/Emergency
V3 manually operated for emergency
Lowering Valve
Depression
V4 mechanism Provides oil control for DM bar
Retract Valve
Depression
V5 Mechanism Provides oil control for DM bar
Extend Valve
Forward/Reverse Provides oil control for drive or
V6
Valve
Counterbalance Prevents machine from running
V7
Valve away on slopes; cushions stops
Page 4-4
S
CHEMATIC
FUNCTION LOCATION
Hydraulic Manifold
retract in drive mode
Mid-chassis
wheels
Mounted inside Mast
Assembly
Mid-chassis
Battery
while parked Compartment
Control Elevation Rate Flow Control Valve
Hydraulic Manifold
steering
Inside hydraulic tank
at outlet
Left side, rear of
Charger
Front Motor Mounts
platform
Control descent rate Lift Cylinder
On Electric motor,
left side, behind
all functions
charger
Hydraulic Manifold
pump.
Hydraulic Manifold
when steering
Holds hydraulic oil Right Side Door
Hydraulic Manifold
steering
Hydraulic Manifold
lift functions
Lift Cylinder
lowering
DM Cylinder
Hydraulic Manifold
Hydraulic Manifold
lift functions
Hydraulic Manifold
Flow Control Valve Assembly
Hydraulic Manifold
FD
RV2
V1
V2
CV
RV1
RV3
V5
V7
107099-002 TM12 Work Platform
Section 4 - Schematics
FC
V7