1R7W-2-1
SECTION 2
UPPERSTRUCTURE
CONTENTS
Group 1 Cab
Removal and Installation of Cab
(ZX110-3 class, 120-3 class) ..................... W2-1-1
Removal and Installation of Cab
(ZX135US-3 class) .................................... W2-1-9
Dimensions of Cab Glass
(ZX110-3 class, 120-3 class) ................... W2-1-21
Dimensions of Cab Glass
(ZX135US-3 class) .................................. W2-1-25
Group 2 Counterweight
Removal and Installation of Counterweight
(ZX110-3 Class, 120-3 Class) ................... W2-2-1
Removal and Installation of Counterweight
(ZX135US-3 Class) ................................... W2-2-3
Group 3 Main Frame
Removal and Installation of Main Frame..... W2-3-1
Group 4 Pump Device
Removal and Installation of Pump Device
(ZX110-3 class, 120-3 class) ..................... W2-4-1
Removal and Installation of Pump Device
(ZX135US-3 class) .................................... W2-4-5
Disassembly of Main Pump ....................... W2-4-10
Assembly of Main Pump............................ W2-4-20
Disassembly of Regulator ......................... W2-4-34
Assembly of Regulator .............................. W2-4-36
Disassembly of Solenoid Valve ................. W2-4-38
Assembly of Solenoid Valve ...................... W2-4-40
Disassembly and Assembly of
Gear Pump .............................................. W2-4-42
Disassembly and Assembly of
Gear Pump (Optional) ............................. W2-4-44
Maintenance Standard .............................. W2-4-46
Group 5 Control Valve
Removal and Installation of Control Valve
(ZX110-3 class, 120-3 class) .....................W2-5-1
Removal and Installation of Control Valve
(ZX135US-3 class).....................................W2-5-5
Disassembly of Control Valve
4-Spool Side .............................................W2-5-10
Disassembly of Control Valve
5-Spool Side .............................................W2-5-18
Assembly and Disassembly of
4-Spool Side and 5-Spool Side ................W2-5-24
Assembly of Control Valve 4-Spool Side ...W2-5-26
Assembly of Control Valve 5-Spool Side ...W2-5-32
Disassembly of Blade Control Valve
(Optional)..................................................W2-5-38
Assemble of Blade Control Valve
(Optional)..................................................W2-5-40
Group 6 Swing Device
Removal and Installation of Swing Device
(ZX110-3 class, 120-3 class) .....................W2-6-1
Removal and Installation of Swing Device
(ZX135US-3 class).....................................W2-6-3
Disassembly of Swing Device......................W2-6-6
Assembly of Swing Device.........................W2-6-14
Disassembly of Swing Motor......................W2-6-24
Assembly of Swing Motor ..........................W2-6-28
Disassembly of Valve Unit .........................W2-6-34
Assembly of Valve Unit ..............................W2-6-36
Maintenance Standard ...............................W2-6-38