DOC-20230111-WA0038.

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UNDERCARRIAGE / Travel DeviceDisassemble Travel Motor• Be sure to read “Precautions for Disassembly andAssembly” thoroughly on page W1-1-1 beforestarting the disassembly work.When disassembling and assembling the travel motor,the travel device must be disassembled andassembled. Refer to the pages for the disassemblingor assemble travel device when disassembling andassembling the travel device. Accordingly, descriptionin this section starts on the premise that the travelmotor has been dismounted.CAUTION: Travel motor weight: 46 kg(101 lb).IMPORTANT: When brake valve (2) is removed,valve plate (9) is also removed. Takecare not to allow the valve plate todrop.Do not remove needle bearing (7)unless necessary.1. Position the travel motor in vertical direction.Loosen socket bolts (1) (8 used) to remove brakevalve (2) from housing (30).: 12 mm2. Remove valve plate (9) from brake valve (2).6. Remove plates (10) (4 used) and friction plates(11) (3 used) from housing (30).CAUTION: Housing (30) weight: 20 kg (44 lb)IMPORTANT: When the brake releasing circuit ispositioned upward, the thick portionof swash plate (17) faces upward. Sotake care that the swash plate maydrop off.7. Place housing (30) horizontally. With the brakereleasing circuit in the housing downward, removethe rotor (12) assembly from housing (30).8. Remove plungers (16) (9 used), retainer (15),spherical busing (14), and disc springs (13) fromrotor (12).9. Remove swash plate (17) from housing (30).10. Attach a bar on the inner spline of shaft (18),tapping on it with a plastic hammer. Remove theshaft (18) assembly from housing (30) with pins(19) (2 used), plate (20), retaining ring (23),bearing (24) and retaining ring (25) still on it.11. Remove pins (19) (2 used) from plate (20).3. Remove O-rings (27) (2 used), (28) and discspring (3) from housing (30).IMPORTANT: When removing piston (4) usingcompressed air, be sure to cover thepiston with cloths to prevent thepiston from flying out.4. Supply compressed air 98 to 294 kPa (1 to 3kgf/cm 3 , 14 to 43 psi) into the brake releasingcircuit of housing (30), so that piston (4) will floatup to be removed.5. Remove O-rings (5) and (6) from piston (4).W3-2-13
UNDERCARRIAGE / Travel DeviceBrake Release Circuit18Servo Piston Circuit30212223242526W1CC-03-02-002W3-2-14
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INTRODUCTIONTO THE READER• This m
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SAFETYRECOGNIZE SAFETY INFORMATION
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SAFETYWEAR PROTECTIVE CLOTHING• W
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SAFETYUSE HANDHOLDS AND STEPS• Fa
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OPERATE ONLY FROM OPERATOR'SSEAT•
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SAFETYDRIVE MACHINE SAFELY• Befor
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AVOID INJURY FROM BACK-OVER ANDSWIN
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SAFETYAVOID POWER LINES• Serious
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HANDLE FLUIDS SAFELY−AVOID FIRES
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SAFETYPRACTICE SAFE MAINTENANCETo a
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SAFETYPREVENT PARTS FROM FLYING•
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SAFETYAVOID HIGH-PRESSURE FLUIDS•
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SAFETYCheck Emergency Engine Stop S
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REMOVE PAINT BEFORE WELDING ORHEATI
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SAFETYDISPOSE OF WASTE PROPERLY•
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SECTION AND GROUPCONTENTSWORKSHOP M
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SECTION 1GENERAL INFORMATIONGroup 1
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GENERAL / Precautions for Disassemb
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TIGHTENING TORQUE SPECIFICATIONSGEN
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IMPORTANT: The following items are
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GENERAL / TighteningPIPING JOINT1 4
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GENERAL / TighteningScrew-In Connec
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PERIODIC REPLACEMENT OF PARTSGENERA
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GENERAL / PaintingPAINTINGPainting
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MEMO...............................
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SECTION 2UPPERSTRUCTURECONTENTSGrou
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UPPERSTRUCTURE / CabREMOVE AND INST
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UPPERSTRUCTURE / Cab9. Disconnect c
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UPPERSTRUCTURE / CabInstallationCAU
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UPPERSTRUCTURE / Cab7. Install viny
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DIMENSIONS OF THE CAB GLASSUPPERSTR
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UPPERSTRUCTURE / CabMethod for Remo
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UPPERSTRUCTURE / CabMethod for Inst
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UPPERSTRUCTURE / CabSpacer a (44584
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Install upper door glass as follows
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Install upper front glass as follow
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UPPERSTRUCTURE / CounterweightREMOV
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UPPERSTRUCTURE / Counterweight8. In
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UPPERSTRUCTURE / Counterweight5. In
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REMOVE AND INSTALL MAIN FRAMEUPPERS
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UPPERSTRUCTURE / Main FrameCAUTION:
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UPPERSTRUCTURE / Main FrameCAUTION:
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REMOVE AND INSTALL PUMP DEVICEUPPER
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UPPERSTRUCTURE / Pump DeviceInstall
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UPPERSTRUCTURE / Pump DeviceW2-4-5W
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UPPERSTRUCTURE / Pump DeviceDisasse
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UPPERSTRUCTURE / Pump Device1 - Cov
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UPPERSTRUCTURE / Pump DeviceAssembl
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UPPERSTRUCTURE / Pump Device(Blank)
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UPPERSTRUCTURE / Pump DeviceNo Part
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REMOVE AND INSTALLE CONTROLVALVE 1U
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UPPERSTRUCTURE / Control ValveInsta
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UPPERSTRUCTURE / Control ValveDISAS
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UPPERSTRUCTURE / Control Valve95838
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Disassemble Control Valve 1• Be s
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5. Remove plug (26), O-ring (27), s
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UPPERSTRUCTURE / Control Valve13. L
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ASSEMBLE CONTROL VALVE 1UPPERSTRUCT
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UPPERSTRUCTURE / Control ValveSecti
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UPPERSTRUCTURE / Control ValveAssem
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UPPRERSTRUCTURE / Control Valve11.
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UPPERSTRUCTURE / Control Valve17. I
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UPPERSTRUCTURE / Control ValveRemov
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UPPERSTRUCTURE / Control ValveDisas
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UPPERSTRUCTURE / Control Valve1 - S
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UPPERSTRUCTURE / Control ValveAssem
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REMOVE AND INSTALLE SWING DEVICEUPP
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UPPERSTRUCTURE / Swing Device(Blank
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UPPERSTRUCTURE / Swing DeviceDisass
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UPPERSTRUCTURE / Swing DeviceCAUTIO
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UPPERSTRUCTURE / Swing DeviceCAUTIO
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UPPERSTRUCTURE / Swing DeviceAssemb
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UPPERSTRUCTURE / Swing Device9. Adj
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UPPERSTRUCTURE / Swing Device10. Re
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UPPERSTRUCTURE / Swing DeviceIMPORT
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UPPERSTRUCTURE / Swing Device12. Re
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UPPERSTRUCTURE / Swing DeviceAssemb
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UPPERSTRUCTURE / Swing Device18. Ap
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REMOVE AND INSTALL RIGHT PILOTVALVE
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UPPERSTRUCTURE / Pilot ValveIMPORTA
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REMOVE AND INSTALL LEFT PILOTVALVEU
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REMOVE AND INSTALL TRAVEL PILOTVALV
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UPPERSTRUCTURE / Pilot ValveInstall
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REMOVE AND INSTALL BLADE PILOTVALVE
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UPPERSTRUCTURE / Pilot ValveInstall
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Disassemble Right and Left Pilot Va
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Assemble Right and Left Pilot Valve
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UPPERSTRUCTURE / Pilot Valve8. Appl
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UPPERSTRUCTURE / Pilot ValveDisasse
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UPPERSTRUCTURE / Pilot Valve10. Rem
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Assemble Travel Pilot ValveUPPERSTR
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UPPERSTRUCTURE / Pilot Valve7. Plac
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UPPERSTRUCTURE / Pilot Valve14. Ins
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Disassemble Blade Pilot Valve• Be
Page 208 and 209: UPPERSTRUCTURE / Pilot ValveAssembl
Page 210 and 211: UPPERSTRUCTURE / Pilot Shut-Off Val
Page 212 and 213: InstallationUPPERSTRUCTURE / Pilot
Page 214 and 215: UPPERSTRUCTURE / Pilot Shut-Off Val
Page 216 and 217: Assemble Pilot Shut-Off ValveUPPERS
Page 218 and 219: REMOVE AND INSTALL SHOCKLESSVALVEUP
Page 220 and 221: DISASSEMBLE AND ASSEMBLE SHOCK-LESS
Page 222 and 223: UPPERSTRUCTURE / Shockless Valvekey
Page 224 and 225: REMOVE AND INSTALL SOLENOID VALVEUN
Page 226 and 227: UPPERSTRUCTURE / Solenoid Valve(Bla
Page 228 and 229: Disassemble Proportional Solenoid V
Page 230 and 231: Assemble Proportional Solenoid Valv
Page 232 and 233: UPPERSTRUCTURE / Solenoid ValveDisa
Page 234 and 235: MEMO...............................
Page 236 and 237: SECTION 3UNDERCARRIAGECONTENTNSGrou
Page 238 and 239: REMOVE AND INSTALL SWING BEARINGUND
Page 240 and 241: UNDERCARRIAGE / Swing Bearing(Blank
Page 242 and 243: UNDERCARRIAGE / Swing BearingDisass
Page 244 and 245: UNDERCARRIAGE / Swing BearingAssemb
Page 246 and 247: REMOVE AND INSTALL TRAVEL DEVICEUND
Page 248 and 249: UNDERCARRIAGE / Travel DeviceInstal
Page 250 and 251: UNDERCARRIAGE / Travel DeviceDisass
Page 252 and 253: IMPORTANT: For handling of floating
Page 254 and 255: UNDERCARRIAGE / Travel DeviceAssemb
Page 256 and 257: UNDERCARRIAGE / Travel Device11. In
Page 260 and 261: 12. Remove retaining rings (23) and
Page 262 and 263: UNDERCARRIAGE / Travel DeviceAssemb
Page 264 and 265: IMPORTANT: When needle bearing (7)
Page 266 and 267: Disassemble Brake Valve• Be sure
Page 268 and 269: Assemble Brake Valve• Be sure to
Page 270 and 271: REMOVE AND INSTALL CENTER JOINTUNDE
Page 272 and 273: UNDERCARRIAGE / Center JointInstall
Page 274 and 275: UNDERCARRIAGE / Center JointDisasse
Page 276 and 277: UNDERCARRIAGE / Center JointAssembl
Page 278 and 279: MAINTENANCE STANDARDUNDERCARRIAGE /
Page 280 and 281: REMOVE AND INSTALL TRACKADJUSTERBef
Page 282 and 283: Disassemble Track Adjuster• Be su
Page 284 and 285: UNDERCARRIAGE / Track AdjusterCAUTI
Page 288 and 289: UNDERCARRIAGE / Track AdjusterAssem
Page 292 and 293: REMOVE AND INSTALL FRONT IDLERBefor
Page 294 and 295: UNDERCARRIAGE / Front IdlerDisassem
Page 296 and 297: UNDERCARRIAGE / Front IdlerAssemble
Page 298 and 299: UNDERCARRIAGE / Upper And Lower Rol
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UNDERCARRIAGE / Upper And Lower Rol
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REMOVE AND INSTALL TRACKSRemovalUND
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UNDERCARRIAGE / TrackCAUTION: Secur
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UNDERCARRIAGE / TrackIMPORTANT: Ins
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UNDERCARRIAGE / TrackMAINTENANCE ST
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UNDERCARRIAGE / TrackPinBAW142-03-0
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MEMO...............................
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SECTION 4FRONT ATTACHMENTGroup 1 Fr
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FRONT ATTACHMENT / Front Attachment
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STANDARD DIMENSIONS FOR ARMAND BUCK
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REMOVE AND INSTALL CYLINDERFRONT AT
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FRONT ATTACHMENT / CylinderInstall
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FRONT ATTACHMENT / CylinderCAUTION:
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FRONT ATTACHMENT / Cylinder4. Remov
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4. Disconnect hoses (6) (2 used) fr
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5. Hoist boom cylinder (4). Start t
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FRONT ATTACHMENT / CylinderInstall
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FRONT ATTACHMENT / CylinderDisassem
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FRONT ATTACHMENT / CylinderAssemble
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FRONT ATTACHMENT / CylinderIMPORTAN
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11. Align the holes on piston rod (
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MEMO...............................
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SECTION 5ENGINE AND ACCESSORYSECTIO
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MEMO...............................
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Hitachi Construction Machinery Co.
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