Manitowoc Grove RT880E User Manual

HYDRAULIC SYSTEM RT880E SERVICE MANUAL
2-52 Published 11-10-2014, Control # 524-00
2 SPEED SWING VALVE
Description
The 2-speed swing valve (see Figure 2-27) is used to select
the swing motor speed. The valve is bolted directly to the
swing motor. It consists of two solenoid actuated two position
two-way valves and an adjustable flow control.
Swing speed is selected in the cab via the dashboard Swing
High/Low Speed Switch. In the deenergized position or LOW
SPEED switch position, the two solenoid actuated two
position two-way valves allow oil to pass across the
adjustable flow control to the opposite side of the motor thus
reducing the flow available to the motor. When selecting the
HIGH SPEED switch position, the two solenoid actuated two
position two-way valves are energized thus not allowing oil to
pass across the adjustable flow control and forcing all
available flow to the motor.
Maintenance
Removal
1. Tag and disconnect the electrical connector to the valve.
2. Tag and disconnect the hydraulic hoses from the valve.
Cap or plug the lines and ports.
3. Remove the two retaining screws securing the valve to
the swing motor.
4. Remove valve.
Installation
1. Secure the valve to the swing motor using the two
retaining screws.
2. Connect the hydraulic hoses to the ports on the valve as
tagged during removal.
3. Connect the electrical connector to the valve as tagged
during removal.
4. Verify proper operation of the valve. Refer to the SWING
SPEED in the Operator Manual.
5. Check valve and hydraulic connections for leaks. Make
repairs as needed.
NV1
SV1
SV2
FIGURE 2-27
Item Description
1 Needle Valve
2 Adapter
32-Way Valve
4Coil
5Plug
6392-1
6392-2
1
NV1
2
V1
3, 4
SV1
5
2
V2
3, 4
SV2

Manitowoc Grove RT880E Specifications

General

Brand	Manitowoc
Model	Grove RT880E
Category	Construction Equipment
Language	English