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Unic URW295CR Maintenance Manual

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ＭＡＩＮＴＥＮＡＮＣＥ　ＭＡＮＵＡＬ
URW295CR
ＦＵＲＵＫＡＷＡ　ＵＮＩＣ　ＣＯＲＰＯＲＡＴＩＯＮ

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  • Page 1 ＭＡＩＮＴＥＮＡＮＣＥ　ＭＡＮＵＡＬ URW295CR ＦＵＲＵＫＡＷＡ　ＵＮＩＣ　ＣＯＲＰＯＲＡＴＩＯＮ...

  • Page 2: Table Of Contents

    Contents １． Dimensions and weight of crane body （１−１） ２． Description of carrier equipment （２−１） ３． Description of crane equipment （３−１） ４． Major specifications （４−１） ５． Rated Road Chart （５−１） ６． Attention １ Inspection before crane operation （６−１） ２ Emergency stop switch  ３ Shock-less function （６−２） ４ Interlocking balance control function ７． Mode change １ Manual mode  （７−１） ２ Radio control mode  ３ Switching of mode indicator ４ Switching of "shockless"function （７−２） ５ Switching of low-temperature operation mode ６ Resetting of interlocking balance control （７−３） ７ Switching of  outrigger radio contorol mode ８ Method of engine start and stop that uses radio controller （７−４） ８． Control box  １ Internal view of control box ...
  • Page 3 ９． Control valve １ MRV-500 control valve （９−１） ２ Main relief valve （９−２） ３ Relief valve for storing hook （９−３） ４ Pressure reducing valve （９−４） ５ Back pressure valve （９−５） ６ Pressure regulator valve （９−６） ７ Valve body (D, H, T, S) （９−７） ８ Valve body (Outrigger) （９−８） ９ O-ring fitted on jointing surface of valve body （９−９） 10 Accelerator cylinder （９−１０） 11 Spool assembly (types of D, H, T, S) （９−１１） １０． Oil flow in the in-out body １  When no operation is carried out （１０−１） ２  When crane is being operated （１０−２） ３  When unloading （１０−３） ４  When hook is being wound up by hook storing operation （１０−４） ５  When hook storing relief valve is being functioned by hook storing operation （１０−５） ６  When boom up, hook up,boom retraction, and slewing C.W. are functioning （１０−６） ７  When boom down, hook down, boom ext, and slewing C.C.W. are functioning （１０−７） ８ Description of acceleration cylinder function （１０−８）...
  • Page 4 １４． Telescoping cylinder １ 5-Section Boom (Triple Cylinder) Operation  (1) When Telescoping Cylinder1 extends （１４−１）  (2) When Telescoping Cylinder1 retracts （１４−２）  (3) When Telescoping Cylinder2 extends （１４−３）  (4) When Telescoping Cylinder2 retracts （１４−４）  (5) When Telescoping Cylinder3 extends （１４−５）  (6) When Telescoping Cylinder3 retracts （１４−６）  (7) Adjusting Procedures for Selector Valve with Adjusting Bolt （１４−７） ２ Function and Working of Cushion Seal  (1) Flow of Pressure Oil When Retracting （１４−８）  (2) Flow of Pressure Oil When Extending （１４−９） ３ Cause of Troubles and Measures to be taken （１４−１０〜１１） １５． Derrick cylinder １ Flow of oil,when lowering （１５−１） ２ Flow of oil,when raising （１５−２） １６． How to punch （１６−１） Telescoping/Derrick cylinder measures to prevent piston from being （１６−２〜３） loosened １７． Hoist winch １ Cons truction of Hois t Winch and brake s hoe adjusting procedure （１７−１） ２ Caution to be taken when reass embling hoist winch （１７−２）...
  • Page 5 ２３． Over winding alarm １ Function of overwinding alarm and procedures for operation  （２３−１） ２ Boom top in detail （２３−２） ３ Illustrated wiring diagram,overwinding alarm （２３−３） ２４． Electric circuit １ System structure （２４−１） ２ Electric circuit diagram （２４−２，３） ３ General view （２４−４〜８） ２５． Structure of emergency stop switch disassembled condition （２５−１） ２６． Correspondence and check method at trouble １ Emergency measures when crane will not function at all （２６−１） ２ How to control outriggers when in an emergency （２６−２） ３ How to judge differential transformer for break or short-circuit of coil （２６−３〜４） ４ Inspection of derrick cylinder （２６−５） ５ Insupection procedures when cylinder sinke （２６−６） ６ Procedures for checking outriggers for sinking （２６−７） ２７． Boom length detector １ How to install and detach boom length detector （２７−１） ２ How to replace main cord for boom length detector and potentiometer （２７−２〜４） ２８． Mentenance And Inspection Of Carrier （２８−１〜３）...

  • Page 6: １．Dimensions And Weight Of Crane Body

    １．Dimensions and weight of crane body All width 600ｍｍ The total height 1375ｍｍ Tread length    1050ｍｍ The total length 2690ｍｍ Total weight(approx.) 1850kg （１−１）...

  • Page 7: ２ Description Of Carrier Equipment

    ２ Description of carrier equipment Rubber crawler Horn switch Wheel sprocket Fuel tank Idle roller Hydraulic oil tank Truck roller Stater switch Crawling motor Hour meter Crawling lever Choke knob Accelerator lever Lock lever （２−１）...

  • Page 8: ３ Description Of Crane Equipment

    ３ Description of crane equipment Option Boom Over-winding alarm Column Load meter Frame Warning horn Hoist winch Wire rope Slewing device Load indicator Derrick cylinder Automatic stop for leaving minimum wire rope Telescoping cylinder (With wire rope retaining roller)(Option) Outrigger Level Crane operating levers 19 Anti-rollover device Outrigger control levers (only crane equipped with device)(Option) Hook Outrigger selection switch （３−１）...

  • Page 9: ４　Major Specifications

    ４　Major specifications Major specifications （Speed,indicated in the table below is at oil temperature range of 45～ 55℃,operating with noload,and at rated pump discharge.） Crane capacity(maximum lifting load) ２．９３ton×１．４ｍ　（With outriggers extended fully） Maximum lift above groud(Hook) Approx ８．８ｍ Boom to be extended to: ２．５３ｍ～４．０７５ｍ～５．６１ｍ～７．１３ｍ～８．６５ｍ...

  • Page 10: ５．Rated Road Chart

    ５．Rated Road Chart Boom section １・１＋２ 3.835 Working Radius （ｍ） Outrigger Max EXT. 2.65 2.25 2.05 1.65 Ratid Road （ｔ） Outrigger Not Max EXT. 1.45 0.65 0.49 0.35 0.25 Boom section １＋２＋３ 5.37 Working Radius （ｍ） Ratid Road Outrigger Max EXT. 1.35 1.35 1.35 1.25 0.65 0.52 0.43 Outrigger Not Max EXT. 0.65 0.53 0.38 0.28 0.22 0.16 0.12 （ｔ） Boom section １＋２＋３＋４ 6.89 Working Radius （ｍ）...

  • Page 11: １ Inspection Before Crane Operation

    ６．１ Inspection before crane operation Do not operate the crane for about 2 seconds after starter switch has been tuened on. The crane is carrying out the system diagnosis to prevent incorrect operation. The mode indicator lamp is to be fully lit up for 2 seconds during the system diagnosis.

  • Page 12: ３ Shock-Less Function

    ６．３ Shock-less function In order to preuent a lifted cargo from swinging, it allows the crane to make a smooth stop when operated through radio remote control. When making the crane a sudden stop, actuate the “selector switch” controlling opposite function while the shock-less is functioning. (Do not pull the speed lever during this operation.) In order to inactivate the shock-less function, turn ON the “hook winding-down”...

  • Page 13: ２ Radio Control Mode

      7.1 Manual mode     Radio control operation switch is pushed or if mode indicator lamp has disappeared     by pushing Radio control selector switch, the manual operation is possible.  Mode indicator lamp is turned off. Radio control operation switch   7.2 Radio control mode     If the key switch of the transmitter is turned on, the start button is pushed, and mode indicator lamp lights,    the radio controller can be operated. Mode indicator lamp is lights. Key switch Start button   7.3 Switching of mode indicator (State ⇔ Operation) Depress both winding-up and radio controller selector switches simultaneously. Operation indication State indication (normal case） Depress both winding-up and radio controller selector switches at the same time or turn OFF power to crane and turn it ON again. ＋ Radio control operation switch ( 7 - 1 )

  • Page 14: ４ Switching Of "Shockless"Function

      7.4 Switching of "shockless"function  (Carry it out when it is not over-wound） Turn ON winding-down switch with para-hook switch depressed. "shockless" No"shockless" “[-]” appears on the  left side of mode indicator. (normal case） Turn ON winding-up switch with para-hook switch depressed.   7.5 Switching of low-temperature operation mode Depress the switch for storing hook with the switch for slewing C.C.W.turned ON. Low-temperature Low-temperature operation mode operation mode ON Depress the switch for storing hook with the switch for OFF(normal case） Mode indicator shows [06]. slewing C.W.turned ON. Voice message, “change control mode”is issued. ( 7 - 2 )

  • Page 15: ６ Resetting Of Interlocking Balance Control

      7.6 Resetting of interlocking balance control Depress the switch for storing hook with the switch for boom-up turned ON. Retaining function of  Retaining function of  dividing operation ON dividing operation OFF Mode indicator shows [oF]. (normal case） Depress the switch for storing hook with the switch  for boom-down turned ON. Voice message, “change control mode”is issued.   7.7  Switching of  outrigger radio contorol mode Turn ON "mode operation switch" to outrigger side. Crane operation mode Outrigger operation mode Mode indicator shows [04]. (normal case） Turn ON "mode operation switch" to crane side. Voice message, “change control mode”is issued. mode opreration switch ( 7 - 3 )

  • Page 16: ８ Method Of Engine Start And Stop That Uses Radio Controller

    7.8  Method of engine start and stop that uses radio controller           However, this operation is possible under the following condition.             １） Starter switch must be on.             ２） The power supply of the transmitter must be on.             ３） The operation mode must be a radio controll mode.  Depress the switch for mode select with the switch for slewing C.C.W.turned ON. Engine stop Engine start Depress the switch for mode select with the switch for slewing C.W.turned ON. ( 7 - 4 )

  • Page 17: １ Internal View Of Control Box

    ８．１ Internal view of control box Package Packing Modo indicator Fuse Radio remote control selector switch Matters to be attended when carrying out electric welding When carrying out electric welding, a large amount of electric current from the welder flows back through ground circuit which in turn may damage the control box.
  • Page 18 ８．２ Mode indicator lighting when it is in normal operation Remote Content manual display control × × Current control is in traveling mode. No operation but outrigger is possible either manually or by remote　controller. × ○ Current control is in radio controller mode. ×...
  • Page 19 ８．３ Mode indicator blinking when it is in wrong operation. Correspondence display It is operated to selector switch of shock-less function while operating the crane. The manual operation is done at the radio controller mode. The radio controller is operated at a manual mode. 1.

  • Page 20: ５ Error Indication

    ８．５ Error indication When an error is detected, the mode indicator goes off or blinks and the voice message “Service remote control” sounds. Mode Available Measures Trouble indication operation None No operation System error is possible. ４２ Replace fuse in control box. Turn power ON again.
  • Page 21 When an error is detected, the mode indicator goes off or blinks and the voice message “Service remote control” sounds. Mode Available Measures Trouble indication operation No operation Check if oil pressure is applied. ７０ Derrick is possible. Check that manual lever has not been caught. ７１...

  • Page 22: ６ Zero Point Adjustment

    ８．６　Zero point adjustment Mode indication Setting procedures Engage PTO to turn power ON. Start "Hook storage" SW being pushed one by one from the Depress “radio remote control selector” "CC" blinking when you do not exchange the control boxes. switch and ”slewing C.W.” switch simultaneously until beep sound is heard, then depress “slewing C.C.W.”...

  • Page 23: Differential Transformer, Or Accelerator Unit Has Been Replaced

    ８．７ Zero point adjustment procedures when spool, 　　　differential transformer, or accelerator unit has been replaced The adjustment is needed only when any of following components has been disassembled/ re-assembled or replaced: Differential transformer, Spool, Acceleration cylinder, and Control valve. １． Engage PTO to turn power ON ２．...

  • Page 25: ８ Mode Indication When Zero Point Adjustment Has Been In Failure

    ８．８ Mode indication when zero point adjustment has been in failure When differential transformer has not been connected, following modes blink: Mode indication Mode indication Where in error Where in error ． ． ． ． ｄ Derrick Outrigger: Right ． ．...

  • Page 31: 8.14 Voice Message List

    8.14 Voice message list Remote control ready When PTO is connected, and the crane power supply is turned on When turned into normal mode by pushing the radio control selector switch. Radio control selector switch When the emergency stop is released by pushing the emergency stop switch. State that switch is not pushed State that switch is pushed Emergency stop is released...
  • Page 32 Engine side Port relief for storing hook 9.1  MRV‑500 control valve 606041000 Gauge port for pilot Pressure reducing valve Proportional solenoid for Back pressure valve accelerator cylinder 3.0MPa(30kgf/cm ) 1.0MPa(10kgf/cm ) 740192193 Gauge port Lever side Flame side Needle valve for releasing automatic Tank port Accelerator stop for over‑winding cylinder Pump Main relief set pressure 601239000 speed Differential transformer  20.6MPa（ 210kgf/cm2 ）at 38L/min 2000 rpm accelerator cylinder Solenoid valve for unloading 750211008 740192192 Relief for storing hook set Pressure  3.9MPa（ 40kgf/cm2 ）at 17L/min Solenoid for storing hook Main relief valve 740192192 Piping port side 606042000 Pressure regulator valve Pump port Pressure difference1.2MPa  (12kgf/cm ) Derrick...
  • Page 33 9.2 Main relief valve Gauge port  PT1/4 Main relief set pressure pump speed Ｏ‑ring 770170014 20.6MPa（ 210kgf/cm2 ）at 38L/min 2000 rpm Backup ring 770180045 Relief for storing hook set Pressure Ｏ‑ring 731191021 Gauge port  3.9MPa（ 40kgf/cm2 ）at 17L/min Main relief  Backup ring 732121021 for pilot valve pressure 606042000 PF1/4  Tank PF3/4 In‑out body Ｏ‑ring 731191032 Tank side High‑ Pressure side Ｏ‑ring 731191021 Ｏ‑ring 770170048 Ｏ‑ring Ｏ‑ring 731171015 Ｏ‑ring 731191016 Backup ring 770180050 731191011 Backup ring 732121015 Backup ring 732121016...
  • Page 34 9.3 Relief valve for storing hook Relief valve for storing hook 606041000 Relief valve  for storing hook Relief setting pressure for storing hook  3.9MPa [40kgf/c㎡ ] at 17L/min O‑ring  731191021 High‑pressure  side In‑out body Needle valve Tank side 605116040 High‑pressure side O‑ring 731171005 O‑ring 731173012 Backup ring 732123012...
  • Page 35 9.4 Pressure reducing valve Pressure reducing valve Solenoid valve for unloading  740192192 Sleeve(No disassemble is allowed) Do not desassemble this part as sliding  surface of spool may be damaged  when trying to remove it. In‑out body Main relief Pump port Ｏ‑ring 731171005 To be connected to PF1/2 pilot section Back‑up ring Spool 732121005 Ｏ‑ring 731171512 Ｏ‑ring 731191014 Ｏ‑ring 731191512 Filter 605686290 Ｏ‑ring Ｏ‑ring Pilot pressure Parts of regular replacement Tank 731174008 731174009...
  • Page 36 9.5 Back pressure valve Gauge port Ｏ‑ring  731191018 Back pressure valve...
  • Page 37 9.6 Pressure regulator valve Pressure regulator valve Derrick Down  UP Hoist Down Telescope Extend Retract Slew C.C.W Outrigger Extend Retract Tank side Tank side High‑pressure  Control valves side Ｏ‑ring 731191022 Pilot line Choke plug with filter 605686360...
  • Page 38 9.7 Valve body (D, H, T, S) Ｏ‑ring Lower,Down,Extend,C.C.W Ｏ‑ring 731191006 Raise,Up,Retract, C.W 731171011 Shuttle  Ｏ‑ring valve 731171015 Packing Raise    Lower 770200059 Ｏ‑ring 731171015 Up        Down Badk‑up ring 732131015 Ｏ‑ring Retruct   Exitend 731171011 C.W.      C.C.W. Differential  Ｏ‑ring 770170053 transformer  750211006 Tank side Tank side Ｏ‑ring 731174008 High  Ｏ‑ring 731174009 pressure side Ｏ‑ring 731191512 Pressure regulator valves  for each control element  Ｏ‑ring 731191512 Proportional solenoid  Proportional solenoid  740192193 740192193 Ｏ‑ring Raise,Up,Retract, C.W Lower,Down,Extend,C.C.W 731191014...
  • Page 39 9.8 Valve body (Outrigger) Ｏ‑ring 731191014 Ｏ‑ring 731171011 Ｏ‑ring 731171015 Packing 770200059 Ｏ‑ring 731171015 Badk‑up ring 732131015 Ｏ‑ring 731171011 Differential  Ｏ‑ring 770170053 transformer  750211006 Tank side Tank side Ｏ‑ring 731194008 Ｏ‑ring 731194009 High  pressure side Ｏ‑ring 731191512 Pressure regulator valves  Ｏ‑ring 731191512 for each control element  Proportional solenoid  Ｏ‑ring 740192193 731191014...
  • Page 40 9.9  O‑ring fitted on jointing surface of valve body Ｏ‑ring Ｏ‑ring Ｏ‑ring Ｏ‑ring 731194010 770170014 Tank 731171005 731194010 Ｏ‑ring 770170054 Tank Tank High‑ High‑ Ｏ‑ring Pressure  Pressure  731191018 Ｏ‑ring 731171005 Ｏ‑ring 731191018 In‑out body side Accelerator cylinder side Valve body side (Derrick,Hoist,telescoping,Slewing） Valve body（Pressure regulation) Valve body In‑out body Pressure Valve body (Derrick,Hoist,Telescoping,Slewing) regulator Accelerator cylinder Ｏ‑ring Ｏ‑ring Derrick Down 731191016 770170014 Hoist Down...
  • Page 41 9.10  Accelerator cylinder Proportional solenoid  740192193 Ｏ‑ring  731171512 Ｏ‑ring  731191512 Ｏ‑ring  731174009 Ｏ‑ring  Accelerator Cylinder 731174008 601239000 Differential transformer  Back‑up ring Packing Ｏ‑ring Ｏ‑ring Ｏ‑ring 750211008 732131015 770200059 770170053 731171015 731171015...
  • Page 43 10.1  Oil flow in the in‑out body  Back pressure valve  Port relief for storing hook 1.0MPa(10kgf/cm ) Gauge port for Poilot pressure         when no operation is carried out Pressure reducing valve 3.0MPa(30kgf/cm ) Gauge port Solenoid valve for  Relief valve for  Needle valve for releasing  Tank port autmatic stop for over‑winding storing hook storing hook Accelerator Tank cylinder Solenoid valve  for unlading Solenoid for storing hook Main relief valve Back pressure valve Pressure regulator valve Main relief  valve Feedback Working pressure  of pump is maintained  Pressure reducing  at 2Mpa. valve Emergency screw Solenoid valve for unloading Pailot pressurer Solenoid valve for  Relief valve for storing hook storing hook Set‑bolt 3.9MPa(40kgf/cm ) Solenoid valve ...
  • Page 44 10.2 Oil flow in the in‑out body  Back pressure valve  Port relief for storing hook 1.0MPa(10kgf/cm ) Gauge port for Pilot pressure      when crane is being operated Pressure reducing valve 3.0MPa(30kgf/cm ) Gauge port Needle valve for releasing  Tank port autmatic stop for over‑winding Solenoid valve for  Relief valve for  Accelerator storing hook storing hook cylinder Solenoid valve  for unlading Tank Solenoid for storing hook Main relief valve Back pressure valve Pressure regulator valve Main relief  valve Feedback Working pressure  Pressure reducing  of pump valve Emergency screw Solenoid valve for unloading Pilot pressurer Set‑bolt Solenoid valve for  Relief valve for storing hook storing hook 3.9MPa(40kgf/cm ) Secondary ...
  • Page 45 Back pressure valve  10.3  Oil flow in the in‑out body  Port relief for storing hook 1.0MPa(10kgf/cm ) Gauge port for pilot pressure       when unloading  Pressure reducing valve 3.0MPa(30kgf/cm ) Gauge port Solenoid valve  Relief valve  Needle valve for releasing  Tank port autmatic stop for over‑winding for storing hook for storing hook Accelerator Tank cylinder Solenoid valve  for unlading Solenoid for storing hook Main relief valve Back pressure valve Pressure regulator valve Main valve Main relief  valve Tank Working pressure  of pump is maintained  Pressure reducing  at 1Mpa or less valve Emergency screw Secondary  Relief valve for storing hook Spool Solenoid valve  Core pressure for storing hook 3.9MPa(40kgf/cm )
  • Page 46 10.4  Oil flow in the in‑out body when hook is being        wound up by hook storing operation Solenoid valve  Relief valve  for storing hook for storing hook Tank Core Winding up Back pressure valve Pressure regulator valve Spool Main relief  Feedback valve Ｐ Working pressure  Pressure reducing  of pump is maintained  valve at 6Mpa or less. Emergency screw Solenoid valve for unloading Pilot pressure 3MPa Relief valve for storing hook Set‑bolt Solenoid valve  for storing hook 3.9MPa(40kgf/cm ) Solenoid valve  Set‑bolt Secondary  for unlading (stop valve) pressure Main relief valve Tank Working  20.6MPa(210kgf/cm ) pressur Primary ...
  • Page 47 10.5 Oil flow in the in‑out body when hook storing relief       valve is being functioned by hook storing operation Solenoid valve  Relief valve  for storing hook for storing hook Tank Core Back pressure valve Pressure regulator valve Spool Main relief  Feedback valve Ｐ1 Working pressure  Pressure reducing  of pump is maintained  valve at 6Mpa or less. Emergency screw Solenoid valve for unloading Pilot pressurer 3MPa Set‑bolt Solenoid valve  Relief valve for storing hook for storing hook 3.9MPa(40kgf/cm ) Solenoid valve  Set‑bolt Secondary  for unlading (stop valve) pressure Main relief valve Tank Working  20.6MPa(210kgf/cm ) pressur Primary ...
  • Page 48 10.6 Oil flow in the valve body when boom up, hook up, boom retraction,       and slewing C.W. are functioning When electric current flows through the solenoid coil with the output  Actuator port Actuator port signal supplied out of control box, the core is magnetized accordingly. Lower,Down,Extend,C.C.W Raise,Up,Retract, C.W  The spool in the solenoid moves upward leading the pilot pressure  Shuttle valve to the piston which in turn allows the spool to move to the left. This connects the return circuit to the tank and at the same time  connects the oil in "P1" to the circuit actuating boom‑up, hook‑up,  boom retraction, and slewing C.W.. Spool Piston Raise Retract Differential  transformer Detects spool position   Pilot pressure to apply signal input Tank Ｐ Tank to control box. Spool Pressure regulator valves  for each control element  Core Proportional solenoid ＯＮ Proportional solenoid ＯＦＦ Lower,Down,Extend,C.C.W Raise,Up,Retract, C.W...
  • Page 49 10.7 Oil flow in the valve body when boom down, hook down, boom extension,       and slewing C.C.W. are functioning When electric current flows through the solenoid coil with Actuator port Actuator port the output signal supplied out of control box, the core is Raise,Up,Retract, C.W. Lower,Down,Extend,C.C.W.  magnetized accordingly.  The spool in the solenoid moves upward leading the pilot pressure  Shuttle valve to the piston which in turn allows the spool to move to the left. This connects the return circuit to the tank and at the same time  connects the oil in P1 to the circuit actuating boom‑down, hook‑down,  boom extension, and slewing C.C.W.. Lower Piston Spool Down Extend C.C.W. Differential  transformer Detects spool position   Pilot pressure Spool to apply signal input  Tank Tank Ｐ1 to control box. Core Pressure regulator valves  for each control element Proportional solenoid ＯＦＦ Proportional solenoid ＯＮ Lower,Down,Extend,C.C.W Raise,Up,Retract, C.W.
  • Page 50 10.8 Description of acceleration cylinder function When controlling through the radio remote controller, electric  Coil current proportional to the movement of speed control lever flows  from the control box to the cylinder coil so that the iron core is  Core gradually magnetized accordingly.  The iron core and the spool facing each other with the spring  1 placed them move downward to lead the pilot  pressure to the piston for extension. Spring 1  The cylinder extends to the position where the working force  of cylinder for extension controlled by movement of  spool spool and the force of spring 3 are balanced.  The position being balanced is  detected by the differential transformer  to provide feedback to the control  If no current flows through  box which in turn sends next command  the coil, spool is pushed up  to the proportional solenoid. so that pilot pressure will  not be applied to cylinder  for extension. Pailot pressure 3.0MPa (30kgf/cm ) spring 2 To be connected to tank spuping 3 Internal pressure changes from  0(zero) to 30㎏f/c㎡ according to  extent of opening of the spool. Piston Differential transformer...
  • Page 51 11.1  Hydraulic System Relief valve for storing hook Solenoid valve  3.9MPa(40kgf/cm ) for storing hook Solenoid valve  Working  Set bolt（stop valve） for unloading pressure Secondary  pressure Gauge Port Main relief valve Tank 20.6MPa(210kgf/cm ) Primary pressure Pump Back pressure valve Pressure  1.0MPa regulator  Pressure reducing valve (10kgf/cm ) 3.0MPa(30kgf/cm ) valve 1.0MPa Emergency screw（stop valve） (10kgf/cm ) Pilot pressure Gauge port Solenoid valve  Raising SOL for accelerator Derrick Regulator valve  for each control  Lowering SOL element Accelerator cylinder Shuttle valve...
  • Page 52 11.2 Hydraulic Circuit Diagram (control valve) Tank Gauge Port From pump Solenoid valve Main relief valve for unloading In‑out Back pressure valve Pressure reducing  valve Solenoid valve Pilot pressure Set bolt Emergency screw for storing hook Gauge Port Pressure regulator  Derrick valve Lower Accelerator Raise Lower Raise Hoist Down Down Telescope Extend Retract Extend Retract Hydraulic motor type ⇒Internal pilot type C.C.W Slewing C.C.W High pressure line Outrigger Tank line Ext.
  • Page 53 11.3 Hydraulic Circuit Diagram Geuge Port Derrick Pressure relief 21.6MPa Counter‑balance  Line filter (220Kgf/c㎡) valve 606022000 740580036 Filter 770290150 Hydraulic motor Check valve 740197149 740390024 Hoist Doun Hydraulic motor 740320029 Counter‑balance valve Load meter 606004000 770363335 Filter770290147 Telescoping Left Slewing Hydraulic motor 740360027 Contorol valve 740170007 Ｗ.Ｐ.check valve 601463000 Right Filter  770290149 Outrigger Hydraulic pump 740290030 Engine Front, Rear, Rated delivery 36L/min  Left Left Rated revolution 1800rpm Front, ...
  • Page 57 12.4  Construction of swivel joint and position of houses. Hoist Up Hoist Down Hoist Drain Derrick Lowering Telescoping Retraction Derrick Telescoping Raising Extention To hexagon socket head plug,apply "Lock Tight#202"before tightening. (Don't use a sealing tape.) Inner Joint When assembling,fill up with chassis grease. Outer Joint Hoist ホイスト デリック Derrick 上 起 Raising Telescoping テレ Derrick デリック Retraction 縮 Lowering 伏 Hoist ホイスト Down 下 Telescoping テレ...
  • Page 60 13. B OOM (5-s ec tion boom) (1) S imultaneous teles c oping of boom4 and boom5 E xtending wire rope C ord reel B oom1 B oom3 B oom5 Tere1 Tere2 Tere3 B oom4 B oom2 R etracting S heave2 S heave1 wire rope Operation...
  • Page 61 (2) B oom 4, 5 front s ide s ec tion in detail B oom4 B oom5 P ipe G uide C onnect the cord which came out of the pipe to the overwinding detector by pas s ing it through ins ide of the guide.
  • Page 62 (3) B oom 3, 4 rear s ide s ec tion in detail Apply "T hree B ond #1102"to the s lide plate to prevent it from falling. Apply the dis ulfide molybudenum greas e to the s lide plate s urface. Tele1 B oom4 R etracting...
  • Page 63 (4) Ins tallation proc edures for s lide plate and guide It has s imilar c ons truc tion irres pec tive of number of boom s ec tion G uide C learance 2mm C learance 1mm When as s embling, apply"Lock tight #242".
  • Page 64 （１４−１）...
  • Page 65 (2) When T eles c oping C ylinder1 retrac ts After the s et-s crew is tightened with Lock Tight #2701 applied、hit with a punch at 2 places on the C heck valve 1 circumference and leave it as it is for 1 hour. S pool R od C heck...
  • Page 66 (3) When T eles c oping C ylinder2 extends C heck valve 1 S lide pipe R od B olt C heck Tele2 valve S elector valve as s ’y P is ton C heck valve 2 C heck valve 1 After the s et-s crew is tightened with Lock Tight #2701 applied、hit with a punch at 2 places on the S pool...
  • Page 67 (4) When T eles c oping C ylinder2 retrac ts C heck valve 1 S lide pipe R od C heck valve B olt S pool Tele2 S elector valve as s ’y P is ton C heck valve 2 C heck valve 1 After the s et-s crew is tightened with Lock Tight #2701 applied、hit with a punch at 2 places on the...
  • Page 68 (5) When T eles c oping C ylinder3 extends C heck valve 1 R od S lide pipe B olt C heck Tele2 valve S elector valve as s ’y P is ton C heck valve 2 C heck valve 1 S lide pipe S pool P res s ure Oil...
  • Page 69 (6) When T eles c oping C ylinder3 retrac ts C heck valve 1 R od C heck B olt valve Tele2 S pool S elector Valve As s ’y P is ton S lide pipe C heck valve 2 C heck valve 1 S lide pipe To tank...
  • Page 70 (7) A djus ting P roc edures for S elec tor V alve with A djus ting B olt A djus ting P roc edures with A djus ting B olt R etract telescoping cylinders (1) and (2) to their minimum. A pply Ò...
  • Page 71 14.2 Function and Working of Cushion Seal For the purpose of absorbing a piston shock to the stroke end, the 4-section boom and 6-section boom have the cushion seal in the part of piston of the telescoping cylinder (2), while the 5-section boom has the cushion seal in its telescoping cylinder of (2) and (3).
  • Page 72 Cushion mechanism of the telescoping cylinder (2) for 5-section and 5-section boom. (2) F low of P res s ure Oil When E xtending When extending the cushion seal is pushed to ward the snap ring, and the pressure oil flows into the chamber A without being shut as shown in the illustration.
  • Page 73 14.3 Cause of Troubles and Measures to be Taken (1) 5-section boom When retraction of the boom (3) becomes impossible at the position just before full retraction of the booms (4), (5) and (6), inspect the plunger which is assembled in the telescoping cylinder (3). When the boom (3) does not change over to the boom (2), and retraction becomes impossible at the position just before full retraction, inspect the drilled hole at the position of the plunger of the telescoping cylinder (2).
  • Page 74 5-section boom (T riple cylinders) T roubles Possible cause Measures to be taken Some foreign substances are Disassemble selector valve for Retraction is normal, but when cleaning, or replace it with a extending, booms (2) and (3) clogging the part of selec- new one.
  • Page 75 15.1 Flow of oil,when lowering Apply"Lock Tight "638"here Hezagon socket head screw For grand Bush omission stop Apply"Lock tight #2701" With"Curing accelerator  #7649"If the addelerater is not used, do not flow of the agent.After the screw is  tightened,hit with a pinch at 2 places on  its circumference. and the The check valve shuts  amountof oil that returns to the tank is limited. Pressure oil Tunk     The spool opens  according to the reduction side  pilot pressure Counter‑balance valve Piston Hezagon socket head screw For piston turn stop Apply"Lock tight #2701" With"Curing accelerator  #7649"If the addelerater is not used, do not flow of the agent.After the screw is  tightened,hit with a pinch at 2 places on  its circumference. （１５−１）...
  • Page 76 15.2 Flow of oil,when raising Apply"Lock Tight "638"here Hezagon socket head screw for gland‑bush turn stop Apply"Lock tight #2701" With"Curing accelerator  #7649"If the addelerater is not used, do not flow of the agent.After the screw is  tightened,hit with a pinch at 2 places on  its circumference. Pressure oil Tunk Check Valve  opens. Counter‑Balance Valve Piston Check Valve opens. Hezagon socket head screw Spool opens For piston turn stop Apply"Lock tight #2701" With"Curing accelerator  #7649"If the addelerater is not used, do not flow of the agent.After the screw is  tightened,hit with a pinch at 2 places on  its circumference. （１５−２）...
  • Page 77 １６　 HOW TO PUNCH (1) Purpose Troubles injuring the inside surface of cylinder tube due to screws mounting piston being loosened have been happened. Therefore, we not only upgraded the screw lock agent “LOCK TIGHT #262” to “#2701” to strengthen adhesion but also added punching process (partly carried out for derrick cylinder).
  • Page 78 TELESCOPING/DERRICK CYLINDER ASS’Y, MEASURES TOPREVENT PISTON FROM BEING LOOSENED (Description) In order to ensure preventing the pistons of telescoping and derrick cylinders from becoming loose, fix the screw threads on the rods and the pistons with the adhesive “LOCK TIGHT #638” (excepting for telescopic cylinders). Besides, securing piston with screws and punching after application of “LOCK TIGHT #2701”...
  • Page 79 TELESCOPING/DERRICK CYLINDER ASS’Y, MEASURES TOPREVENT PISTON FROM BEING LOOSENED (3) Application of “Lock Tight” • Apply “LOCK TIGHT” sufficiently to the threads to fill them. Apply “LOCK TIGHT” to the component mounting o-ring (piston) at the 2nd to 3rd threads from the thread end. (Refer to “Estimated adhesive consumption”...
  • Page 80 HOIST WINCH 17 . 1 Construction of Hoist Winch and brake shoe adjusting procedure Gear4 Drum Apply"Lock Tight#242" Breather Gear2 Ratchet Wheel Brake Shoe Split Pin After assembling, apply grease to engaging tooth surfaces of the gear. Castle Nut Rotate the gear shaft to Washer   check that the pawl makes a smooth movement. Disk Bearing Motor Pay attention to its direction. Gear1 Casing Brake Shoe Ajusting procedures 1.Tighten the castle nut lightly with a spanner.
  • Page 81 17 .  2 Caution to be taken when reassembling hoist winch Check that the spring is caught in the drill hole on the pawl. Dimensions on both sides should beequally arranged when fitting the ratchet wheel. Set bolt position Ratchet Wheel Tightening order of bolts for mounting reduction gear Tighten the hexagon socket head screws in diagonal order after the set bolt has been fastened first to align each screw hole. （１７−２）...
  • Page 82 17 . 3 Cause of T roubles and Measures to be Taken ( Hoist winch ) Problems Possible cause Measures to be taken Pump is faulty. Replace. Pressure does not rise. (Pressure does not rise at idling speed.) (Total pressure required for operation is insufficient.) Relief set of control valve is faulty.
  • Page 83 （１８−１）...
  • Page 84 19. SLEWING  1 Slewing reduction gear (1) Construction of slewing reduction gear Dust seal Bearing housing Taper roller bearing Flange bolt Worm wheel Casing Ball bearing Crown nut Gear shaft Breather Worm shaft Crown nut Snap ring Teper roller bearing （19‑1）...
  • Page 85 (2) Construction to be taken when reassembling slewing reduction gear Apply "ThreeBond Apply Grease to #1401"to it. the inside of dust seal. Dust Seal Fill up with grease here. Use Lithium soap radical grease (such as Rizonix grease No.1 or Kyseki) Nut:Apply "Lock Tight#262"before tightening it. Note: Tighten the nut to the extent that the gear shaft can be rotated to either direction with your both hands. Reference Tightening torque:20N‑m(2kgf‑m) Bearing housing Assemble the worm wheel with the mark"V" Flange bolt directed upward. Tightnig torque: 167±20N‑m (17±2kgf‑m) （19−2）...
  • Page 86 (3) Slewing reduction gear disassembly procedures Remove a snap ring (H-80) retaining the taper roller bearing which sustains the worm shaft. Turn the gear shaft counterclockwise, and pull out the worm shaft from the casing. (Use of special tool for removing worm shaft is recommended.) Remove 8 pcs.
  • Page 87 This figure shows the pulled out housing with gear shaft and worm wheel. Grip the housing with a vice and pull out the worm wheel with a gear puller. Pull out the collar which is assembled in the nut. （19‑4）...
  • Page 88 Pull out the O-ring which is assembled in the nut. With a pin spanner, remove the nut which retains the taper roller bearing. Note: To the threaded part of the nut,ÒLOCK TIGHTÓ was applied. Therefore, when loosening, warm up lightly the threaded part with gas flame, and then loosen.
  • Page 89 ２０．１ Turntable Mounting Procedures １ Install the slewing reduction gear to the base. ２ Set the turntable on the base to screw‑in the bolts for mounting turntable lightly. ３ Insert the thickness gauge(0.1〜0.2mm)into the space between the turntable gear     and the pinion gear,and press strongly the turntable to the pinion gear. ４ So as not to part from the turntable and the pinion gear,it tightens with the      specified torque in the order of tightening the installation bolt.  ５ After it assembles it, grease is painted on the gear tooth combination side.  "Ｓ"Mark(Soft zone)Position Flame ８ ４ ７ １ Back Front ２ ６ Slewing reduction ５ ３ ９ gear ass'y Tighting sequence of bolt for mounting turntable Tightnen the bolts in the numerical order as illustrated in the figure above. Pinion gear Tempered bolt Bolt Turn table After assembling, apply grease to engaging tooth surfaces of the gears. （２０−１）...
  • Page 90 ２０．２ Position of soft zone,tightening sequence of bolts       and tightening torque "Ｓ"Mark(Soft zone)Position ８ ４ ７ １ Back Front ６ ２ Slewing reduction ５ ３ ９ gear ass'y Turntable Tempered bolt Tighting sequence of bolt for mounting turntable Tightnen the bolts in the numerical order as illustrated in the figure above. Tighting torque for bolts fastening slewing reduction gear ass'y Parts Name Torque  Bolt  167±20Ｎ‑ｍ Tighten the mounting bolts in diagonal order. M14×40L (17±2㎏f‑m) 716114D40 Tightning torque for bolts fastening turntable Torque Parts Name Before mounting bolts are tightened, Tempered Bolt 353±29Ｎ‑ｍ degrease the bolts and the tapped holes M18×75L(12.9) (36±3㎏f‑m) to apply "Lock Tight #262"to the bolts and 018542020...
  • Page 91 ２１．１ Tightening torque for bolts fastening column           and tightening order  Inspection Hole  for bolts mounting turntable Stopper Bolts for Column ＭＪ６×５０(１２Ｔ)０８Ｈ６５１０６０ When assembling,apply"Lock Tight ♯９６２Ｔ" Tightning Torque:２５±２Ｋｇｆ・ｍ Tighten the bolts in the numerical order as illusted in the figure. Column Turntable （２１−１）...
  • Page 92 22.1 Construction of slip ring and its fitting position. Apply sealing agent, "Cemedine SuperX(White)" Green to the mounting surface (over entire circumference.) Degrease sealing surface Yellow thoroughly. Swivel joint Apply sealing agent, "Cemedine SuperX(White)" to the mounting surface (over entire circumference.) Degrease sealing surface  thoroughly. Yellow Green (22‑1)
  • Page 93 23.1 OVER WINDING ALARM 1． Function of overwinding alarm and procedures for operation (1) Function of overwinding alarm The device automatically makes an alarm sound to warn that the wire rope is overwound when the hook comes close to the boom top. Cord reel Overwinding detector Weight for...
  • Page 95 23.3 Illustrated wiring diagram,overwinding alarm To detector leaving Cord reel minimum wire rope Black B'    E    IG    BAT   ST Black OFF                                          STOP 1                                          RUN SPRING RETURN Black 2                                          START Overwinding Control box Yellow detector Key switch Green Slip ring Blue/Black IG        B' E        BAT +   ‑  12V Yellow Green Battery Overwinding alarm switch Switch panel(front) White Brown/Yellow Black Black Speaker Light Green...
  • Page 96 24.1 System structure Contorol box Battery Engine Control box  reset ＳＷ Voice alarm Engine start relay Buzzer to alarm for un‑stored boom Emergency stop ＳＷ Engine stop relay Outrigger  mode  buzzer Outrigger mode lump Receiver Transmitter Three colous lump Mode indicator ML     Red     Detection of spool position control box    Yellow     Green  Contorol valves Unloading ON/OFF SOL for crane Pressure sensor  ON/OFF SOL Switching to     ( ead side) Derrick cylinder h low pressure Differential Accelerator Proportional Pressure sensor ...
  • Page 97 SLIP RINGS DETECTOR FOR LEAVING HEAD 24.2 Electric circuit diagram PRESSURE SENSOR PRESSURE PRESSURE MINIMUM WIRE ROPE (HEAD SIDE) DETECTOR FOR FULLY  GN YE (CLOSED ON SAFE） RAISED BOOM PRESSURE SENSOR UNIT‑FLASHER UNIT‑FLASHER UNIT‑FLASHER SPEED (ROD SIDE) REMOTE CONTROL RAISE (ON WHEN FULLY RAISED)  (TRANSMITTER) RD(VIN) BOOM ANGLE RD WH BK LOWER RD BK SENSOR BK(GND) ANGLE 0V DETECTOR FOR FULLY  OVERHOIST HOIST WH(VOUT) SWITCH LOWERED BOOM LOWER...
  • Page 98 Black 24.3 White/Black Blue Pink Pink Brown To control box Orange Orange To detector for leaving Yellow Yellow Yellow minimum wire rope Yellow  Red Control box Blue Blue White Speaker Green White White White  Blue/Black DETECTOR FOR LEAVING SPEAKER(+) Black Brown/Yellow Gray Gray   MINIMUM WIRE ROPE Red     Red     Red(VIN) Black Black Black   Black   Black(GND) Violet Violet White    White   ...
  • Page 99 24.3 General view Black Green  Yellow Overwinding alarm switch To be connected to slip ring Green         Yellow Overwinding Red‑ Light         Yellow white Black Green To connected to "BATTERY MAIN"  Earth To connected to "BATTERY RR"...
  • Page 104 25.1 Structure of emergency stop switch disassembled condition To install the emergency stop switch unit, insert the protrusion into the groove of the thread section. Unlocked condition Fit the metal fixture’s direction to the groove and insert the unit. If the nut is tightened excessively, the switch does not return correctly. Locked condition ( 25 - 1 )
  • Page 105 26.1 Emergency measures when crane will not function at all １） Check that all manual levers are at their neutral positions.  ２） Re-start the engine and wait for 2seconds to operate the crane. ３） Hasnʼt the emergency stop switch been depressed? Reset the emergency stop switch to operate the crane. ４） Please store the crane  while resetting overwinding automatic stop switch.  ５） Please store the crane  while resetting Controlbox reset switch.  ６） Unfasten the hexagon nut by 3 turns with the  set bolt locked with a screwdriver. Tighten up the set bolt fully while paying attention  that the hexagon nut will not be turned together  with the set bolt. Lock the set bolt with the hexagon nut to prevent  it from being loosened. This allows the crane to be operated by manual control but the  automatic stop for over-winding will not function Emergency screw ７） Extract the lock pin with your hand to screw in  the emergency screw and disconnect the power  connector, “BATTERY MAIN”. Although both the automatic stop for over-winding and the auto acceleration will not function,  this allows the crane to be operated by manual control.  If the crane can be operated by taking  measures described in sections 4) and 5) above, contact local UNIC crane sales agent or  service shop immediately as the crane is faulty. ( 26 - 1 )
  • Page 106 26.2　How to control outriggers when in an emergency 1. Remove cover. 2. In order to operate each function in any one of outriggers, operate the outrigger control lever while depressing,with a screwdriver, the button located on the side of the solenoid valve operate. Outrigger to be operated How to operate　...
  • Page 107 26.3 How to judge differential transformer (750211003) for break or short-circuit of coil In order to prevent the differential transformer from being broken, use a circuit tester with digital display when checking it. When differential transformer coil beaks or short-circuits: No crane operation can be possible.
  • Page 108 ② Check the insulation between coils of primary and of secondary. If measurement reads even in MΩ range, replace the transuformer. Measurement of some resietance between primary and secondary coils suggest that moisuture may be entered into the connector. ③ ⑤...
  • Page 109 ２６. ４ Inspection of derrick cylinder (1) Preparation before inspection ①Raise booms to an angle of approx. 30°. ②Put a mark on the rod with a felt pen (refer to Fig. 1). ③In order to release pressure remained in the derrick system, stop the engine and shift the manual lever for raising/lowering of booms.
  • Page 110 26.5 INSUPECTION PROCEDURES WHEN CYLINDER SINKE 　　　　Inspection of telescoping cylinder (1) Preparation before inspection ①Allow booms to be horizontal and extend them fully to put a mark on each boom section (refer to Fig. 1). Put a mark on each boom ②Raise booms to their maximum to sling a load.
  • Page 111 26.6　Procedures for checking outriggers Raise vehicle by 50mm. for sinking In case where outrigger sinks during crane operation Test 1 Putting the crane on a solid level ground, extend the outriggers to their extremes and raise the crane mounted vehicle Retract by 50mm from the ground to check the sinking condition.
  • Page 112 27.1 How to install and detach boom length detector If the cord is wound up beyond the yellow tape, the potentiometer built in the boom length detector may be damaged. When the boom length detector is installed and detached, follow the steps illustrated below by paying attention not to wind up the cord beyond the yellow tape.
  • Page 113 27.2 How to replace main cord for boom length detector and potentiometer (When main cord is broken) 　　　　　 (61MC03110)　　　　 (61MC03120) 1. In order to prevent the yellow tape of main cord from entering the case, attach the stopper for preventing 　over-wound and remove the boom length detector with the boom retracted to its extreme.
  • Page 114 8. Fix the main cord with a gummed tape to prevent it from being loosened. 9. Raise the pawl to remove the contact ring out of the drum. 10. Melt the solder on the backside of contact ring to disconnect the damaged main cord. Pawl Winding-up direction...
  • Page 115 18. Pull out the cord until the marked yellow tape can be seen to attach the stopper for preventing over-wound. If the stopper for preventing over-wound is not available, fix the cord on the case with a gummed tape to prevent it from being wound up furth Keep always apply tension to the cord.
  • Page 116 28．Mentenance And Inspection Of Carrier １．Inspection before operation Device Servicing item Device Servicing item Hydraulic oil tank Oil leakage,Oil quantity,Filling Interlock for Function Fuel leakage crane-crawl lever Remaining fuel quantity Engine oil quantity/Filling up Engine Crawling lever Slack, Travel Battery electrolytic solution Wheel sprocket Loose bolt Unusual vibration,Noise...
  • Page 117 ３．Inspection and Maintenance which is to be carried out every 250 hours or 3 months Check and clean the air clean erelement when the crane has been operated for 250 hours（3 months). Clamp Cleaner case Cleaner element Filling port Cleaner Drain port Grid Check oil quantity in the reduction gears of crawling motor/Filling up(Charge oil every 1,000 hours)
  • Page 118 29．Maintenance And Inspection Of Crane １．Inspection before operation Servicing item Servicing item Servicing item Device Device Device Tightness of each Rotation of hook, Item necessary for mounting Slinging Pump Hool Function of retaining crane operation are implements Oil leakage Usual mechanism provided noise...
  • Page 119 ３．Replacement of wire rope (for winding-up) Wire rope is an expendable article and it will be damaged and its strand wires are broken to allow it to be thinner through a long period of operation．Replace the rope according to following ◆１．Replacement criteria 1.A rope in which amount of broken strand wires（except filler wires）comes to more than 10％...
  • Page 120 ◆３．How to fix wire rope end Wire rope end 1.when paasing the wire rope end through the wire Where cut out socket，be sure to pass it as indicated by the arrow mark on the socket． Wire clip If it is passed from the opposite direction，service (Pay attention to life of wire rope becomes shorter as the wire rope is mounting direction) kept bent all the time. 2.Do not forget to mount the wedge and the wire clip as illustrated in the figure in the left． Arrow mark Leave the wire rope end to allow a distance from the Wedge notch to the rope end by more than 40mm as  (Diameter of wire rope=8mm) illustrated in the figure as"a". 3.Pass the pin through with the wire socket held with Projection on upper part your hand and tighten it with the bolt securely. of wire socket Stopper If rope end is left by more than 40mm (as"a"illustrated above),rope  end is visible through this hole,if  not,adjust length of rope end. Pass the pin through and tighten it securely with bolt ◆４．How to correct twisted wire ropes Wire ropes tend to turn in untwisting direction when they are under tension．IF two or more wire ropes are hooked together, they tend to be twisted particularly while they are new.The twist wiii decreases as the ropes are getting fit to the crane. １．Unload the hook. ２．Extend the boom fully.
  • Page 121 ◆５．Replacement of expendable parts Replacement of gaskets and seals for each cylinder Replace it every 3 years. Replacement of sliding plate of boom Replace it every 3 years. Sliding plate Replacement of brake shoe of hoisting winch Replace it every 3 years. Brake shoe ( 29 - 4 )
  • Page 122 30．Refueling resin １．Lubrication chart (Carrier) return filter saction. filter Service interval Where to lubricate Lubricant Tool No.of part Initial ： Replace after 25 hours ①Engine　（１．２liters） Engine oil After ： Replace every 50 hours ②Tension adjustment of 30 hours,Whenever ３２mm spanner Initial ：...
  • Page 123 ２．Lubrication chart (crane) Service No.of Where to libricate Lubricant Tool interval part ①Boom slide plate（Underside＆side face of boom Molybdenum grease Manual application sections②,③,④,and⑤）For5-section boom ②Boom slide plate(Upperside of boom section① Molybdenum grease Grease pump Daily ③Boom foot pin Chassis grease Grease pump Chassis grease Grease pump...

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