Upright TM12 - Electrical and Hydraulic Troubleshooting

Page 5-4
Schematics 5.3 - Hydraulic
Tm12 Work Platform - European
5.3 H
YDRAULIC
Legend:
Hydraulic Schematic Legend (107015-000)
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 Mid-chassis
CYL2 Lift Cylinder Provides force to lift platform
Mounted inside
Mast Assembly
CYL3
Depression
Mechanism
Cylinders (2)
Extends or retracts DM bar Mid-chassis
CYL4 Brake Cylinder
Stops machine from moving while
parked
Battery
Compartment
FC Flow Control Control Elevation Rate Lift Cylinder Block
FD
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
Left side, rear of
Charger
MOT Drive Motors (2)
Provides tractive effort to move
platform
Front Motor
Mounts
ORF Down Orifice (2) Control descent rate Lift Cylinder Block
PMP Pump
Provides hydraulic pressure for all
functions
On Electric motor,
left side, behind
charger
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 Drive Relief Valve
Provides pressure protection to
Pump and Drive components
Left side, forward
of Charger
TNK Tank Holds hydraulic oil Right Side Door
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
Allows oil to return to tank;
manually operated for emergency
lowering
Lift Cylinder Block
V4
Depression
mechanism
Retract Valve
Provides oil control for DM bar DM Cylinder
V5
Depression
Mechanism
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
V8
Velocity Fuse
Valve
Lock lift cylinder if line breaks Lift Cylinder Block
Drive Relief Valve Cylinder Valve Block
ORF
FC
V3
FD
RV2
Hydraulic Manifold
V1
V2
CV
RV1
RV3
V5
V7
V7