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Grove
Published 01-14-2021 Control # 707-01
2-1
TMS9000-2 SERVICE MANUAL
HYDRAULIC SYSTEM
2
SECTION 2
HYDRAULIC SYSTEM
SECTION CONTENTS
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Draining and Flushing . . . . . . . . . . . . . . . . . . . . . . 2-4
Removing Air from the Hydraulic System . . . . . . . 2-5
Parts Replacement . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Supply Pressure and Return Circuit . . . . . . . . . . . 2-6
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Hydraulic Reservoir and Filter. . . . . . . . . . . . . . . . 2-6
Pump Distribution . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Return Hydraulic Filter Assembly . . . . . . . . . . . . 2-10
Hydraulic Pumps . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Carrier Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Outrigger Selector-A/C Manifold Valve. . . . . . . . 2-19
Outrigger Control Manifold . . . . . . . . . . . . . . . . . 2-21
Pilot Operated Check Valve . . . . . . . . . . . . . . . . . 2-24
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
Internal Leak Testing . . . . . . . . . . . . . . . . . . . . . 2-24
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25
Superstructure Valves . . . . . . . . . . . . . . . . . . . . . 2-26
Turntable Hydraulic Valves . . . . . . . . . . . . . . . . . 2-26
Main Directional Valve Assembly . . . . . . . . . . . . 2-27
Access Manifold Assembly . . . . . . . . . . . . . . . . . 2-28
Hydraulic System of the Superstructure . . . . . . 2-29
Checking for Leaks . . . . . . . . . . . . . . . . . . . . . . . 2-29
Cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29
Steer Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31
Outrigger Extension Cylinder . . . . . . . . . . . . . . . 2-34
Outrigger Jack Cylinder . . . . . . . . . . . . . . . . . . . . 2-37
Center Front Stabilizer Cylinder. . . . . . . . . . . . . . 2-41
Lift Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-44
Counterweight Cylinder . . . . . . . . . . . . . . . . . . . . 2-47
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-47
Telescope Cylinder . . . . . . . . . . . . . . . . . . . . . . . . 2-48
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-48
Pressure Setting Procedures . . . . . . . . . . . . . . . . 2-49
Objective . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-49
Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-49
Valve Pressure Setting Table . . . . . . . . . . . . . . . 2-49
Service Tool Notes . . . . . . . . . . . . . . . . . . . . . . . 2-50
A. Procedure for Checking/Setting the Piston
Pumps Cut-Off & Differential Pressures . . . . . . . 2-50
B. Procedure for Checking/Setting the Pilot
Supply Pressure . . . . . . . . . . . . . . . . . . . . . . . . . 2-52
C. Procedure for Checking/Setting the Main
Directional Control Valve, Load Sense, Lift
and Telescope Pressures . . . . . . . . . . . . . . . . . . 2-53
D. Procedure for Checking/Setting Cab Tilt
weight (CWT) Raise and Lower Pressures . . . . . 2-58
F. Procedure for Checking/Setting Swing
Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-59
H. Procedure for Checking/Setting Air
Conditioning Pressure . . . . . . . . . . . . . . . . . . . . . 2-60
I. Procedure for Checking/Setting the Center
Front Stabilizer Pressure . . . . . . . . . . . . . . . . . . . 2-61
J. Procedure for Checking/Setting the Front
Steer Pressure. . . . . . . . . . . . . . . . . . . . . . . . . . . 2-62
K. Procedure for Adjusting Electronic
Controllers (Meter-in Dead Band and/or
Max Function Speeds). . . . . . . . . . . . . . . . . . . . . 2-63
Содержание Grove TMS9000-2 Series
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