Upright TM12 Service & Parts Manual page 72

Schematics
5.3 H
YDRAULIC
Legend: Hydraulic Schematic Legend (107015-000)
DESIG-
NAME
NATION
Allows Depression Mechanism to
CV Check Valve
CYL1 Steering Cylinder Provides force to turn front wheels
CYL2 Lift Cylinder Provides force to lift platform
Depression
CYL3 Mechanism Extends or retracts DM bar
Cylinders (2)
Stops machine from moving while
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 (2)
Provides hydraulic pressure for all
PMP Pump
Provides pressure protection to
RV1 Main Relief Valve pump, limits platform load
Provides pressure protection to
Steering Relief
RV2 pump and steering components
Valve
Provides pressure protection to
RV3 Drive Relief Valve
Pump and Drive components
TNK Tank
Steering Right/ Provides directional control for
V1
Left Valve
Provides oil control for drive or lift
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 lift
V6
Valve
Counterbalance Prevents machine from running
V7
Valve away on slopes; cushions stops
Velocity Fuse
V8 Lock lift cylinder if line breaks
Valve
Page 5-4
FUNCTION LOCATION
Hydraulic Manifold
retract in drive mode
Mid-chassis
Mounted inside
Mast Assembly
Mid-chassis
parked Compartment
Control Elevation Rate Lift Cylinder Block
Hydraulic Manifold
steering
Inside hydraulic
tank at outlet
Left side, rear of
Charger
Front Motor
platform
Control descent rate Lift Cylinder Block
On Electric motor,
left side, behind
functions
Hydraulic Manifold
capacity.
Hydraulic Manifold
when steering
Left side, forward
of Charger
Holds hydraulic oil Right Side Door
Hydraulic Manifold
steering
Hydraulic Manifold
functions
Lift Cylinder Block
lowering
DM Cylinder
Hydraulic Manifold
Hydraulic Manifold
functions
Hydraulic Manifold
Lift Cylinder Block
Drive Relief Valve
Battery
Mounts
charger
FD
RV2
V1
V2
CV
RV1
RV3
Cylinder Valve Block
ORF
Hydraulic Manifold
V5
V7
V7
Tm12 Work Platform - European
5.3 - Hydraulic
V3
FC