Manitowoc Grove RT880E User Manual

Grove Published 11-10-2014, Control # 524-00 2-31
RT880E SERVICE MANUAL HYDRAULIC SYSTEM
2
VALVES
General
This subsection provides descriptive information for all the
hydraulic valves used on this crane. For a listing of all valves,
the circuit they are used in, and their physical location, refer
to the Valve Usage Table. Refer to Figure 2-17 for a valve
locations pictorial. The description of each valve given here
is for the valve itself. For information on how each valve
functions in the individual circuits, refer to the description and
operation procedures of that circuit.
NOTE: On each valve illustration in this section, each item
number in table correlates to location on the valve,
and to the valve hydraulic schematic.
Table 2-3
Valve Usage Table
Valve Name Circuit Used In Physical Location
Directional Control Valves Boom Lift/Telescope(s)/Hoist(s)
Counterweight Removal
Cab Tilt /Luffing Jib
Superstructure (Right Side Plate)
Between Superstructure Side Plates
Between Superstructure Side Plates
Steering Control Valve Front Axle Steer Control Cab Steering Column
Front Steer/Swing/Accessory Manifold Front Axle Steer Supply
Swing Directional Control
Telescope Relief Control
Swing Brake Pressure
Controller Supply
Hose Reel Brake Control
Hose Reel Motor Supply
Superstructure Right Side Plate
Steering Control Unit Front Axle Steer Cab Steering Column
Hydraulic Remote Controllers
(HRC)
Boom Lift
Telescope (Floor)
Main Hoist
Auxiliary Hoist
Swing
Cab Seat Arm Rests (2)
Cab Floor for Telescope with Optional
Aux Hoist
Swing Power Brake Valve w/Treadle
Pedal
Swing Cab Floor
Double PO Check Valve Cab Tilt Between Superstructure Side Plates
Tandem Brake Valve with Treadle Service Brakes Cab Floor
Dual Accumulator Charging Valve Service Brakes Superstructure inside Left Side Plate
Accumulator(s) Service Brake Superstructure Left Side
Holding Valves Boom Lift
Telescope (3)
Counterweight Removal (2)
Lift Cylinder (Bolt on Manifold)
Cylinder Port Blocks (Cartridge style)
Cylinder Port Blocks (Cartridge style)
Axle Lockout, Rear Steer and Oil
Cooler Fan Motor Control Manifold
Axle Lockout Control
Rear Steer Control
Oil Cooler Motor Control
Left Hand Carrier Frame Rail
Solenoid Valves:
Cross Axle Differential Lock Differential Lock (Optional) Carrier Inside Right Side Rail

Manitowoc Grove RT880E Specifications

General

Brand	Manitowoc
Model	Grove RT880E
Category	Construction Equipment
Language	English