Section
5-8 AB46 Work Platform
Schematics
5.15.2
REFERENCE
DESIGNATION NAME FUNCTION LOCATION
CV1 & CV2 Check Valve, Brake Allows free flow from Rear of Chassis
brakes around
pressure reducing valve
CV3 Check Valve, Flow Check Hydraulic Manifold
Turret Rotate
CV4 Check Valve, Trim Flow Check Hydraulic Manifold
CV5 Check Valve, Jib Flow Check Hydraulic Manifold
CV6 Check Valve, Flow Check Hydraulic Manifold
Boom Raise
CV7 Check Valve, Flow Check Hydraulic Manifold
Boom Extend
CV8 Check Valve, Riser Flow Check Hydraulic Manifold
CV9 Check Valve, Flow Check Hydraulic Manifold
High Relief
CV10 Check Valve, Flow Check Hydraulic Manifold
High Relief
CV11 Check Valve, Flow Check Hydraulic Manifold
Brake Release
CV12 Check Valve, High Flow Check Hydraulic Manifold
CV13 Check Valve, Low Flow Check Hydraulic Manifold
CV14 (2) Check Valve, Stops flow from hand pump Hydraulic Manifold
Hand Pump through diverter valve
CV15 (2) Check Valve, Reduces pressure Hydraulic Manifold
for smooth
cage rotate operation
CV16 Check Valve, Jib Lower Sends oil through OR2 to Hydraulic Manifold
slow jib lowering
CV17 Check Valve, Brake Flow Check Differential Lock Block
CYL1 Steering Cylinder Actuates steering linkage Front axle assembly
to steer front wheels.
CYL2 Riser Cylinder Raise Elevating Assembly Elevating Assembly
CYL3 Boom Extend Cylinder Extend Boom Inside Boom
CYL4 Boom Raise Cylinder Raise Elevating Assembly Elevating Assembly
CYL5 Jib Cylinder Raise Jib Jib
CYL6 Master Cylinder Maintain cage level Rear of Boom
CYL7 Slave Cylinder Maintain cage level Front of Boom
CYL8 Cage Rotate Cylinder Rotate cage Between cage and Jib
CYL9 Left Brake Cylinder Release left brake Left brake
CYL10 Right Brake Cylinder Release right brake Right brake
DVDR Flow Divider Divides oil flow evenly Differential Lock Block
FL1 Filter, Return Keep oil clean Hydraulic tank
Fl2 Filter, Suction Strainer Keep oil clean Pump
Fl3 Filter, Return Keep oil clean Hydraulic tank
Fl4 Filter, Suction Strainer Keep oil clean Pump
MOT1 Motor, Slew Turns Turret Bottom of turret
ORF1 Jib Down Orifice Limits the descent speed
of the jib.
PMP1 Drive Pump Provides fluid power for Chassis
drive system.
PMP2 Boom Pump Provides fluid power for Chassis
boom system.
PMP3 Hand Pump Pump up brakes for towing Hydraulic manifold
REFERENCE
DESIGNATION NAME FUNCTION LOCATION
RV1 High Pressure Limits maximum pressure Hydraulic manifold
Relief Valve
RV2 Low Pressure Limits minimum pressure Hydraulic manifold
Relief Valve
RV3 Turret Rotate Limit pressure to turret Hydraulic manifold
Relief Valve rotate motor
RV4 Riser Relief Limit pressure to riser Riser cylinder
Valve cylinder
RV5 Boom Extend Limit pressure to boom Boom extend cylinder
Relief Valve extend cylinder
RV6 Boom Raise Limit pressure to boom Boom raise cylinder
Relief Valve raise cylinder
RV7 Jib Relief Limit pressure to jib Jib cylinder
Valve cylinder
RV8 (2) Master Relief Limit pressure to master Master cylinder
Valve cylinder
RV9 (2) Slave Relief Limit pressure to slave Slave cylinder
Valve cylinder
RV10 (2) Cage Rotate Limit pressure to cage rotate Cage rotate cylinder
Relief Valve cylinder
RV11 Charge Relief Valve Limit Charge Pressure Drive Pump
V1 Steering Valve Controls oil flow to Top of manifold, ports
steering cylinder marked 'D'.
V2 Riser Valve Controls oil flow to Front of manifold, port
Riser Cylinder
V3 Boom Extend Valve Controls oil flow to Hydraulic manifold
Boom Extend Cylinder
V4 Boom Raise Valve Controls oil flow to Hydraulic manifold
Boom Raise Cylinder
V5 Jib Valve Controls oil flow to Hydraulic manifold
Jib Cylinder
V6 Trim/Level Valve Controls oil flow to Hydraulic manifold
Master Cylinder
V7 Cage Rotate Valve Controls loi flow to Hydraulic manifold
Cage Rotate Cylinder
V8 Turret Rotate Valve Controls oil flow to Hydraulic manifold
Slew Motor (MOT1)
V9 Brake Apply Valve Apply brakes Brake valve block
V10 Pilot Valve Allows oil flow to drive Differential Lock Block
motors to vary
V11 Low Rate Valve Flow control Hydraulic manifold
V12 High Dump Rate Power to riser and Hydraulic manifold
boom extend cylinders
V13 Diverter Valve Allows hand pump to Hydraulic manifold
function
V14 Bypass Valve Allows oil to bypass Differential Lock
to tank Block
V15 Differential Lock Valve Actuate Pilot Valves Differential Lock Block
Note: See figure 5-5 for hydraulic valve locations.
Table 5-4: Hydraulic Schematic Legend
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