Manitowoc Shuttlelift CD5515-2 Service And Maintenance Manual

GROVE Published 1-20-2017, Control# 483-02 4-1
CD5515-2/YB5515-2 SERVICE MANUAL HYDRAULIC SYSTEM
4
SECTION 4
HYDRAULIC SYSTEM
SECTION CONTENTS
General Description . . . . . . . . . . . . . . . . . . . . . . . . 4-1
General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Troubleshooting Aids . . . . . . . . . . . . . . . . . . . . . . 4-2
Troubleshooting Procedures. . . . . . . . . . . . . . . . . 4-2
Troubleshooting Guides . . . . . . . . . . . . . . . . . . . . 4-3
Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
System Description. . . . . . . . . . . . . . . . . . . . . . . . 4-8
Description of Operation . . . . . . . . . . . . . . . . . . . . 4-8
Hydraulic Swivel . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Lift Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Oil Flow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Holding Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Lift Cylinder Leakage Check. . . . . . . . . . . . . . . . 4-11
Telescope Circuit . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
Oil Flow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
Holding Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
Port Relief Valve . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
Telescope Cylinder Leakage Test . . . . . . . . . . . 4-14
Hydraulic Swivel . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Hoist Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Oil Flow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Brake Holding Valve . . . . . . . . . . . . . . . . . . . . . . 4-15
Hydraulic Swivel . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
Swing Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
Oil Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
Pilot Control System . . . . . . . . . . . . . . . . . . . . . . . 4-15
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
Oil Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
Pilot System Relief Valve. . . . . . . . . . . . . . . . . . . 4-15
Pressure Setting Procedures . . . . . . . . . . . . . . . . 4-15
Checking and Adjusting Hydraulic Pressure
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
Anti-Double Blocking System . . . . . . . . . . . . . . . 4-19
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
System Function . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
Outrigger and Axle Lock Out Circuits . . . . . . . . . 4-19
Independently Controlled Outrigger Hydraulic
System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
Oil Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
Outrigger Valves . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
Load Holding Valves . . . . . . . . . . . . . . . . . . . . . . 4-22
Vertical Outrigger Cylinder Leakage Check. . . . . 4-22
Component Repair . . . . . . . . . . . . . . . . . . . . . . . . 4-22
Hydraulic Pump Repair . . . . . . . . . . . . . . . . . . . . 4-22
Outrigger Control Valve . . . . . . . . . . . . . . . . . . . . 4-23
Swing Motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23
Hydraulic Swivel . . . . . . . . . . . . . . . . . . . . . . . . . 4-30
Hydraulic Cylinders . . . . . . . . . . . . . . . . . . . . . . . 4-33
Under Deck Winch. . . . . . . . . . . . . . . . . . . . . . . . . 4-40
GENERAL DESCRIPTION
General
A hydraulic system uses liquid to make a transfer of force.
Any force on a confined liquid is applied to any point in the
system that the liquid reaches. Oil is used as the hydraulic
liquid for this system because the liquid must be a lubricant
for the components of the system.
There are several main components in a hydraulic system.
Each component has a specific function in the system.
The pump moves the oil through the system. It is important
to remember that the pump causes the flow, not the pressure
in the system. Pressure is caused by resistance to the flow.
This resistance can be external (for example, a load on a
cylinder or motor), or internal (the resistance of the
components of the system). Pressure increases as the
resistance to the flow increases. The pump will continue to
push more oil into the system until the resistance is
overcome or the relief valve opens (fixed displacement
pumps) or the pump compensator setting is reached
(variable displacement pumps).
Reference Only

Manitowoc Shuttlelift CD5515-2 Specifications

General

Brand	Manitowoc
Model	Shuttlelift CD5515-2
Category	Construction Equipment
Language	English