Yuchai YC25-8 User Manual
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Yuchai YC25-8 User Manual

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Hydraulic Digger
USER MANUAL

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Summary of Contents for Yuchai YC25-8

  • Page 1 Hydraulic Digger USER MANUAL...
  • Page 2 ● Let the person leave the workplace who not the operator ● It should have a safety operation training before you operates the machine You have the duty to observance the ordinance & laws, follow the relevant direction about machine operation & maintain from YUCHAI.

  • Page 3: Table Of Contents

    Hydraulic Digger Contents Ⅰ、Prolegomena To user------------------------------------------------------------------------1-2 Product Information -------------------------------------------------------------1-3 Direction of The Machine ------------------------------------------------------1-5 Machine Form---------------------------------------------------------------------1-6 Technical Parameters ----------------------------------------------------------1-7 Ⅱ、Safety Rule General rules----------------------------------------------------------------------2-2 Safety Prompt --------------------------------------------------------------------2-3 Safety Equipment ---------------------------------------------------------------2-4 Safety Sign ------------------------------------------------------------------------2-5 Safety of The Workplace -----------------------------------------------------2-13 Safety Operation ---------------------------------------------------------------2-14 Transport &Load and Unload -----------------------------------------------2-24 Maintain --------------------------------------------------------------------------2-25 Fire-proof、...
  • Page 4 Hydraulic Digger throttle grip ----------------------------------------------------------------------3-11 driver's chair --------------------------------------------------------------------3-12 safety belt -----------------------------------------------------------------------3-13 Air-condition Control ----------------------------------------------------------3-14 Radio ------------------------------------------------------------------------------3-18 Door and Window --------------------------------------------------------------3-20 Ⅳ、Operation Manual Prepare for Running Machine ------------------------------------------------4-2 Engine Operation ----------------------------------------------------------------4-3 In&Out Machine ------------------------------------------------------------------4-7 Moving The Machine -----------------------------------------------------------4-8 Turning The machine ---------------------------------------------------------4-10 Rotating The Machine --------------------------------------------------------4-11 Operate The Operating Device ---------------------------------------------4-12 Working On The Slope or In The Water ----------------------------------4-14...
  • Page 5 Hydraulic Digger Forced Changing Part ----------------------------------------------------------5-7 Choose List of the Oil Plants--------------------------------------------------5-8 The Tighten Moment ------------------------------------------------------------5-9 Maintenance List of Time-check -------------------------------------------5-12 Routine Check ------------------------------------------------------------------5-14 Fuel System of the Engine ---------------------------------------------------5-15 Cooling System of the Engine ----------------------------------------------5-19 Lubricating System of the Engine ------------------------------------------5-22 Air Intake System of The Engine -------------------------------------------5-24 Other Maintenances of The Engine ---------------------------------------5-26 Hydraulic System --------------------------------------------------------------5-27...
  • Page 6 Guangxi Yuchai Heavy Industry Company Limited...
  • Page 7 Hydraulic Digger Prolegomena...

  • Page 8: Product Information

    Hydraulic Digger Product Information When you want to know the informations of the machine, please view the picture as follow: ● Overall Information(The nameplate is on the nearside of the platform) ● Engine Information(The nameplate is in the top of the cylinder cover)

  • Page 9: Direction Of The Machine

    Hydraulic Digger ●Running Information(The timer of the engine is in the digital combination instrument which in the cab) Machine File Please fill the machine and engine’s series No. in the table.When you need to buy the spare parts or the relational informations,you can tell us the No..
  • Page 10 Hydraulic Digger Front、back、left、right、top、underside in the manual same as the direction as follow:...

  • Page 11: Machine Form

    Hydraulic Digger Machine Form ( The Moving–arm Un-deflecting Type 1. Bulldozer 2.Bucket 3. Bucket oil cylinder 4. Lever 5.Lever oil cylinder 6.Moving-arm 7. Moving-arm oil cylinder 8. Rotating platform 9. Rotating platform oil cylinder 10.Driving wheel 11.Pedrail 12. guide deflection sheave 13.Bulldozer oil cylinder Note:The lookum is optional equipment.It only used in the better condition.
  • Page 12 Hydraulic Digger 1.Frame dimension parameter YC25-8 Code Item Unit 825E Operating Weight 3080 Standard bucket capacity 0.07 Name of engine Kubota D1803 Cummins A1700 Power of engine Kw/rpm 22.8/2200 24/2200 Length 4508 Height 2400 Overall width 1450 Width of pedrail...
  • Page 13 Hydraulic Digger 2.Operating parameters YC25-8 Code Item Unit 825E Max. digging height 4205 Max.height of load&unload 2840 Max. digging depth 2610 Max. digging radii 4610 Max.digging distance of level floor 4487 Digging radii of Max.digging height 2957 Min. rotating radii 1856 Max.
  • Page 14 Hydraulic Digger 3. Bucket series (black area is standard collocate)
  • Page 15 Hydraulic Digger 4.Driving machine It adopts the hydraulic motor thought the multilevel epicycle reducer to become independent drive.The reducer inside of the padrail. Driving speed(km/h) Max.pull(kN) Power of make the grade High speed 12.36 58%(30 Low speed 22.94 5.Hydraulic system First enter to the throttle hydraulic system Main valve:Intake multiple valve Variable plunger pump:Flux of 2 plunger pump(L/min)
  • Page 16 Hydraulic Digger Safety Rules...

  • Page 17: Safety Prompt

    Hydraulic Digger Safety Prompt 1. Warning sign In the user manual, the sign shows the import information about the safety. When you see the sing, you need to read the information behind the sign careful 2. Safety prompting word The machine includes ”Danger”、 ”Warning”、 ”Notice” etc. The safety prompting word.

  • Page 18: Safety Equipment

    Hydraulic Digger Safety Equipment 1.The safeguard for the operator 1) The operator need put on the interrelated safeguard: sheathy work clothes、motorcycle safety helmet、work shoe and so on(safety glass、safety earplug、glove、safe belt) 2) IF the operator has long hair, please tie it and wear the motorcycle safety helmet.
  • Page 19 Hydraulic Digger...

  • Page 20: Safety Sign

    Hydraulic Digger Safety Sign Warning: if you don’t know the safety sign or the safety sign loses, it may be make some casualty. Please replace the lose or broken sign timely, and make the safety sign cleanness and easy to see. Please read the user manual and the safety sign carefully before 、...
  • Page 21 Hydraulic Digger 2. The place of the safety sign The sign is the picture only show the “Safety sign” part of the sign, other will show in next section...
  • Page 22 Hydraulic Digger 3. Graphic& instruction of the safety sign 1) Care and remoteness the operating device 2）Tail Trade Mark 3) Hoisting Mark...
  • Page 23 Hydraulic Digger 4） No treading 5) Pay attention to the safety when up & down the machine Up& down the machine, please slow, and fist the handrail, face to the machine, use the ladder and the pedrail. 5) Reading the manual...
  • Page 24 Hydraulic Digger 7) Binding Mark 8)Hoisting and Binding mark 9)Locked mark Left control box locked...
  • Page 25 Hydraulic Digger 10) Long arm warming mark 11）Left locked mark 12) Warning marks 2-10...
  • Page 26 Hydraulic Digger 13) When maintain electric please read the manual Electric system can easy to shock hazard. It should read the manual when it maintain. 14) Warning mark on Left control box Do not start the engine through short circuit of the starting motor 16) Excavator electric shock mark 2-11...
  • Page 27 Hydraulic Digger 17) System warning mark 18) Hydraulic oil filling mark 19) Sign of transfuse the fuel oil 20) Sign of Lubrication 2-12...
  • Page 28 Hydraulic Digger 21) Sign of sling Accelerograph mark 23) Pay attention to lock it after open the window of the cab. If it doesn’t lock the window,it will close because of the outside force or the libration,may be hurt the body. 24)Sign of noise 2-13...
  • Page 29 Hydraulic Digger 25)CE mark 26)Safety sign 27)The sign of center of rotating 28) Dozer blade and Chassis adjusting sign 30) Don’t allow to split、drill、cut and hit the accumulator、the high-pressure of the air spring,and need keep way from the fire or the high temperature.
  • Page 30 Hydraulic Digger The parts have the high-pressure air.The wrong way to dispose it can lead some hurts.Please let the person who has more experiences to dispose it. 30) Binding sign 31) Sign of Door latch 32) Use notice of the flee hammer 2-15...
  • Page 31 Hydraulic Digger 33) Sign of oil draining port on the fuel tank 34) Sign of traveling direction 35) Servicing warning sign 36) Glisten sign 37) Shift sign 2-16...

  • Page 32: Safety Of The Workplace

    Hydraulic Digger Safety of The Workplace As far as possible to know the workplace, please check as follow: 1. The place of slope 2. The open drain 3. The suspender 4. The agrotype (soft or hard) 5. The plash or the fenland 6.

  • Page 33: Safety Operation

    Hydraulic Digger water pipe. Warning: If you see the end of the broken cable, the cutting cable will hurt your eye. Safety Operation Warning: Before running the machine, please tie the safety belt, ring the trumpet, and confirm nobody in the workplace.
  • Page 34 Hydraulic Digger 3) Whether the sound、 the liberation、 the smell、 the instrument are well 4) Whether the machine oil or the fuel leak 5) Check engine oil pressure and water temperature 6) Warm-up 2-3 minute 2. Travelling and rotating ● Safety rules of driving 1) Before the machine driving, please turn the top of the 1) when the machine drives on...
  • Page 35 Hydraulic Digger 5) When the machine drives on the area which have the underpass、the bridge、the cable, it need have the sign command, keep a distance 6) Upgrade or downgrade, it need lock the platform 7) When the machine overpass the bridge、the building、the bearing, it should confirm whether they can bear the weight of the digger.
  • Page 36 Hydraulic Digger 3. Driving or operating on the slope It is dangerous to driving、operating on the slope. Be care! 1) It suggests not upgrade or downgrade on the slope which the gradient more than 20 2) When the machine works, it need to tie the safety belt especially on the upgrade or downgrade and the danger...
  • Page 37 Hydraulic Digger 6) When the machine operates the slope which the portrait on the slope, it must start the gradient more than 25 high first ,then towards the direction of the downgrade. The Bulldozer backs it, and press the ground, the place for remove the soil on the direction of the upgrade.
  • Page 38 Hydraulic Digger driving on the rock or over 17) operation device, the roadblock. machine maybe overturn 10) Don't driving or operating on slope which lengthways orientation gradient is more than 25 11) Don’t driving or operating on the slope which the landscape orientation gradient is more than 15...
  • Page 39 Hydraulic Digger operation device, the machine maybe overturn 4.Safe to operation Warning: the operation must remember the operation handles to avoid the wrong operation. Warning: the wrong operation will make the machine overture. Remember the information can make a right guide to protect the body. 1) Before operating, it should remove all the things and the people.
  • Page 40 Hydraulic Digger 7) When the machine operated, if the hydraulic oil tank reach the end-point of the driving, the power will act on the limit ring of the oil tank. It will reduce the use life of the machine. To avoid the case, when the hydraulic oil tank operated, it should have a little value.
  • Page 41 Hydraulic Digger 12) Not dig to the machine body. 13) When the pedrail leave the ground, it doesn’t dig. Otherwise, the machine and the frame will break. 14) Not use the deadweight of the machine to increase the digging power 15) Not use the falling power of the bucket regard the handle、...
  • Page 42 Hydraulic Digger 17) Not use the falling power of the machine. Otherwise,the machine broken. 18) Not use the power of rotating to press the soil or destroy the rideau and the wall.When the machine rotates,it doesn’t make the gear of the bucket into the soil. 19) Not make the bucket into the soil,and not use the driving power to dig.It makes the back of the machine beat over weight.
  • Page 43 Hydraulic Digger 21) Not working plane which under the hanging part.It maybe have the danger of the rockfall or the hanging part collapse. 22) Please install the cabin protecting device If the working area is dangerous for rockfall 23)Do not travelling or working soft surface swampland...
  • Page 44 Hydraulic Digger 5. Prevent dumpage、Antiskid and the resolvent Warning:1)If it need to swerve on the slope, it only use the big radian swerve. When the machine turn right, turn the lever of the moving-arm to left. The distance to the ground about 30cm, lock the platform.
  • Page 45 Hydraulic Digger 6) On the slope, it is 90 for the two pedrail and the gradient, the rotating platform more than 90 7) The machine operates on the slope, it swerves, the platform rotates fast or no power 8) When the machine turn adown about 180 9) It is the uneven road for the back operation 10) The machine dig the underside of the body when it depth digging...

  • Page 46: Transport &Load And Unload

    Hydraulic Digger Transport &Load and Unload Transport (unload) the digger must strict obey the safety rules ● When the digger transported, it must obey the safety transport rules of the country (local) trade or the good habit ● When the digger transported, the cab doesn’t allow to hitching anybody and anything.

  • Page 47: Maintain

    Hydraulic Digger machine drives on the road. And make sure the people can see them. And make sure the car which after can see the sign of “Drive slow” ● The pedrail type machines maybe destroy the road. It needs the truck to transport.

  • Page 48: Fire-Proof、Explosion-Proof& Antigas

    Hydraulic Digger ● Don’t put some small parts into the placket ● The high-pressure liquid can hurt the eye or the skin, it need to avoid when the machine maintains ● Clean all the sundries of the interior machine, it maybe hurt the operator or destroy the machine Fire-proof、Explosion-proof&...

  • Page 49: Accumulator

    Hydraulic Digger ● Clean out the slip、the spill、the lamina and other flammability thing which in the engine、 the vent-pipe、 the muffler、 the engine room ● It doesn’t have to put the dishcloth which have the oil into the cab. ● It should have the fire extinguisher in the cab,and put it where can easy to take ●...
  • Page 50 Hydraulic Digger fire.It must do as follow: ● Check the level of the electrolyte timely,and supply the distilled water to make the level of the electrolyte between the “top level” and the “low level” line.If the electrolyte of the accumulator lower than eh “low level”line,it doesn’t have to use the accumulator ●...
  • Page 51 Hydraulic Digger explode please caution as follow: 1) Cut off the cable of the accumulator, it should cut the cathode cable first 2) Connect the cable, it should connect the cathode cable first 3) Don’t use the metal element to connect the port of the accumulator 4) Don’t welding 、...

  • Page 52: Hydraulic System

    Hydraulic Digger Hydraulic System 1.Safety rule of high-pressure oil The inside of the hydraulic system always have the pressure. When it checks or replaces the pipeline or the soft pipe, it must to check whether the pressure has release or not. If it has the pressure, it will make a serious hurt or destroy.
  • Page 53 Hydraulic Digger 2.Safety operation of the high-pressure soft pipe If the high-pressure leaks, it will make the fire or the operation trouble. And lead the serious hurt or destroy. If it finds the bolt become less crowded, it should stop the machine, and screw down it.
  • Page 54 Hydraulic Digger 4. Release the pressure of the hydraulic system When the digger operates, the hydraulic oil of the hydraulic pipeline in the state of high-temperature and high-pressure. When it take-down the gun, the oil maybe squirts. So it needs to turn the cover of the gun before take-down the gun and release the pressure.
  • Page 55 Hydraulic Digger It deals it ,it need the professional. The machine have the stored energy device in the control pipeline, it is a device which stores the pressure. When the machine has the device, after stop the engine, it can operate the control pipeline short time.
  • Page 56 Hydraulic Digger pipeline. 5) Turning the safety lock joy stick to the lock place to lock the job stick and the attachment control pedal. 2-41...

  • Page 57: Ⅲ、Parts Introduction

    Hydraulic Digger Parts Introduction...

  • Page 58: Pandect For Operation Device(Cab Type)

    Hydraulic Digger Pandect for Operation Device(Cab Type) 1. the seat 2. Joy stick of the left operation device 3. Safety lock handle 4. Joy stick of the right operation device 5. Pedal cover of the assistant control valve 6. Joy stick of the left driving 7.

  • Page 59: Pandect For Operation Device(Canopy Type)

    Hydraulic Digger 14. Left control panel Pandect for Operation Device( Type) Canopy 1. The seat 2. Joy stick of the left operation device 3. Safety lock handle 4. Joy stick of the right operation device 5. Pedal cover of the assistant control valve 6.

  • Page 60: Panel Switch Of Left Controlling Box(Switch Group)

    Hydraulic Digger Panel Switch of Left Controlling Box 1. Switch of the fore light It is open which has the switch sign. 2. Switch of the rear light It is open which has the switch sign. 3. Fan switch It is open which has the switch sign. 4.

  • Page 61: Panel Switch Of Right Controlling Box(Panel Meter And Switch)

    Hydraulic Digger sign 6. Air-condition switch Panel Switch of Right Controlling Box 1. Start switch It uses for start or stop the engine. It has four stations. OFF station It can insert or draw the key, all the switch of the electric system are close, and the engine stops ON station When the engine runs, it should keep the switch key on the ON...
  • Page 62 Hydraulic Digger START station It is the start station of the engine. When the engine starts, it should keep the key on this station. After start the engine, it need loosen the key immediately, it will back ON station by itself. HEAT station When it starts the engine in the winter, it should keep the key on this station.
  • Page 63 Hydraulic Digger Press the switch, the trumpet rings, when the machine will start or act, to remind of safety who around the machines. Instruction Sheet meter of fuel It indicates the fuel quantity of the fuel tank. When the oil under 1/5,the sign sparks. When the oil under 1/10,the sign sparks and the buzzer rings Working hour meter...
  • Page 64 Hydraulic Digger have not worked. Warm-up state indication When the engine warm up, the sign light...

  • Page 65: Safety Lock Part

    Hydraulic Digger Safety Lock Part 1. Safety lock handle Warning: The safety lock part is the important part of the safety system. When the operator leaves the cab, it must safety lock. If the safety lock handle doesn’t stay the lock stations, the handle maybe moves and makes the operation device or the platform move.
  • Page 66 Hydraulic Digger Warning: The platform lock part is the important part of the safety system. When the machine transport 、driving、lay or stop on the ramp, it must platform lock. Platform locks and unlock Lift the pin of the platform lock (see the picture).The bending block (a) of the pin hang on the box(c), unlock the platform and the bottom frame.

  • Page 67: Operate The Operation Device& Rotating Device

    Hydraulic Digger Operate The Operation Device & Rotating Device 1. Operate the operation device & rotating device Use the joy stick direction of the left & right operation device. See the picture. A. Joy stick of the left operation device Operating the bucker lever: fore push the joy stick, the bucker lever overhang, rear pulls the joy stick, the bucker lever draw-in Rotating the platform: Turn the joy stick right, the platform turn right.
  • Page 68 Hydraulic Digger switch button of the left operation device joy stick to replace the platform rotating function or moving-arm deflecting function. On the working order, the machine is the mode of the platform rotating. When it presses the button, it makes the turning head of the joy stick deflects, and presses the replacement button of the joy stick, it can return the mode of the platform rotating.

  • Page 69: Driving Operation

    Hydraulic Digger 3. Operating the assistant operation device When the machine has the assistant operation device, it opens the shift fore、pedal cover of the assistant operation lead valve, and step the pedal of the lead valve, it can connect the assistant oil. Driving Operation 1.
  • Page 70 Hydraulic Digger Gun Handle 1. Gun handle A. Gun handle(Cab type) Pull behind the gun handle of the engine. The gun increases. Before stop the engine, pushed ago the handle to the end. After stop the machine, the handle replaces. B.

  • Page 71: Safety Belt

    Hydraulic Digger suddenness,it will lead hurt.Rememeber to tie the safety belt and adjust the seat before start the machine. ● Front& back adjusting the seat: twist the front& back adjusting handle of the seat, it allows to move about 0-75mm.Loosen the handle, the seat locked.
  • Page 72 Hydraulic Digger safety system. Before the operation, it must tie the safety belt. If the operator doesn’t tie it, it will hurt him when the machine to turn over. Warning: Before tie the safety belt, it need to check whether the safety belt unconventionality. If it fray or destroy, it need to replace it.

  • Page 73: Air-Condition Control

    Hydraulic Digger Air-condition Control The plane of the air-condition lies on the plane switch ground of the left joy stick. 1. Basic operation of the aeration 1） Turn the air-condition switch to “OFF “anticlockwise; 2） Turn the wind speed switch to I、II、III deasil as need. 3）...

  • Page 74: Radio

    Hydraulic Digger speed and wind direction. 2) Turn the air-condition switch to the right place 3) Adjust the wind speed 、 wind direction 、 cooling to make a comfortable condition. 4) Turn the air-condition switch to “OFF “anticlockwise, and Turn the wind speed switch to “OFF “anticlockwise, it stop the refrigeration.
  • Page 75 Hydraulic Digger Press 1.PWR key, the electrical source open, the radio starts. Press it again, the electrical source close, the radio stops.(If the radio is the automatic electrical source, press any key to start the radio, press 1.PWR key stop it.) 2.
  • Page 76 Hydraulic Digger Press 2.CL key long time( more than 3seconds),the time sparks. It mean it enter the time adjusting mode. Now press 5.< key to adjust the minute, press 6.>key to adjust the time. After adjusting, it will return the natural display mode in 5seconds. 9.

  • Page 77: Door And Window

    Hydraulic Digger Door and Window 1. Door of the cab It is the only way to enter the digger for the operator. When the operator leaves the cab, he needs to lock the door. When open the door, it should the lock blocks to the lockpin. When it needs to close the door, it should press the door pull rod.
  • Page 78 Hydraulic Digger If it wants to open the turnover window (fore window),it needs to pull the two commode handles of the turnover window. Operating the commode handles to glide the turnover window. When the turnover window glide to the right place, and push-up the turnover window to the lock place, loosen the commode handle lock, the turnover window locked.

  • Page 79: Ⅳ、Operation Manual

    Hydraulic Digger Operation Manual...

  • Page 80: Prepare For Running Machine

    Hydraulic Digger Prepare for Running Machine 1) The digger is operated by the driver who trained. 2) Don’t operating the machine before the operator perusal the user manual. 3) The operator need put on the interrelated safeguard: sheathy work clothes、motorcycle safety helmet、work shoe and so on(safety glass、safety earplug、glove、safe belt) 4) It needs to check the machine before running the machine every day.

  • Page 81: Engine Operation

    Hydraulic Digger Engine Operation Warning: Before start the engine, please reading the safety detail of the user manual. Reading the safety sign of the machine. 1. Check the machine before start the engine 1) Check whether ties the safety belt, rings the trumpet, make sure nobody on the workplace and the top/bottom of the machine.
  • Page 82 Hydraulic Digger Warning: When the joy stick hangs the safety sign ”No start engine”, it doesn’t allow to start the engine. Warning: Before start the engine, it must to make sure the safety lock handle on the lock state. Warning: In the cold day to start the engine, it need to warm-up.
  • Page 83 Hydraulic Digger exceed 10seconds.After starting the engine and loose the key, it will return to “ON” by itself. If it finds the engine not start, it should start the engine again after 30 seconds. B. Cold temperature to start the engine When the temperature of the condition under 5 degree, turn the key to “HEAT”...
  • Page 84 Hydraulic Digger Warning: The battery can produce the explode air. It must keep away from the fire、the spark. Electricize it in thesealing area or it keeps ventilated area when use the battery. Working need the battery, it need wear the eyepatch. If the way for connect the assistant cable wrong, it will lead explode.
  • Page 85 Hydraulic Digger 3. After start the engine A. Warning the engine and warn-up the machine The normal temperature of the hydraulic oil is 50 C-80 C.If it operates the hydraulic oil under 20 C,it will destroy the hydraulic element. So before start to working, if the temperature under 20 it must warn-up as follow: 1) The engine runs 5 min with the Idle-speed .
  • Page 86 Hydraulic Digger If the engine superheat, don’t stop the engine, it need cooling the engine with the Idle-speed running, then stop the engine. 1) Push the gun goes ahead to the end. 2) Make it cooling with the low-speed running about 5min. 3) Turn the key switch to “OFF”, stop the engine, and the indicator lights wink.

  • Page 87: In&Out Machine

    Hydraulic Digger In & Out Machine 1) Make sure to grasp the engine, and keep the handrail cab’s state next door(see the arrowhead operation. of the picture) 2) Make sure the feet step on the pedrail placidly. 3) In & out the machine, it haven’t to use the joy stick instead...
  • Page 88 Hydraulic Digger Caution: When the operator leaves the cab, please take out the key and lock the door and the window. No allow climb up the oil tank、the cover of the engine、the top of the cab. Under any state, the operation devices (the bucket、the lever、the moving-arm、the attachment) don’t allow have the person.

  • Page 89: Moving The Machine

    Hydraulic Digger Moving Of The Machine 1. Safety rules for moving the machine 1) Before start the digger, you need know the condition, know whether it has the passerby or the roadblock and know the bearing power of the ground. 2) Before start the digger, you need to ring the alarming to caution the passerby.
  • Page 90 Hydraulic Digger Warning: When it is high-speed driving, it is dangerous to turn the joy stick suddenly. 1) No turn the joy stick suddenly, otherwise, it will make the machine starts suddenly. 2) Avoid to replace the joy stick from go ahead to back off suddenly(or from back off to go ahead) 3) Avoid the joy stick replaces suddenly, for example from the high-speed and stop suddenly(loosen the joy stick)
  • Page 91 Hydraulic Digger 2) Operate the left & right driving joy stick as follow: When the bulldozer in front, pushes the foreside of the joy stick forward slowly, and make the machine moves. When the bulldozer in back, pull the joy stick backward slowly, and make the machine moves.
  • Page 92 Hydraulic Digger Caution:Avoid the machine stop suddenly,it need have enough space. 4-14...

  • Page 93: Turning The Machine

    Hydraulic Digger Turning The machine Caution: Before operate the joy stick, it need to check the station of the bulldozer. If the bulldozer in back, the operation reverse Use the left& right driving joy stick to replace the direction of the driving.
  • Page 94 Hydraulic Digger 4-16...

  • Page 95: Rotating The Machine

    Hydraulic Digger Rotating The Machine ●Before rotate the top frame, it need to check whether the area safe. ●Make sure already to lift up the lock pin of the platform, unlock the platform and the chassis. ●If it operates the rotating joy stick fast, the top frame turns fast, too.

  • Page 96: Operate The Operating Device

    Hydraulic Digger Operate The Operating Device If it operates the joy stick of the operation device fast, the operation device moves fast, too. If it operates the joy stick of the operation device slowly, the operation device moves slowly ,too The operation device operated by the left/right operation control valve.
  • Page 97 Hydraulic Digger If the moving arm has the deflecting function, it must make sure the machine stay the rotating state before it rotating. 3. Control the moving-arm Operate the right operation control valve, push forward, the moving-arm down; Pull backward, the moving-arm up. 4.
  • Page 98 Hydraulic Digger 5. Control the moving-arm deflecting(the rotation head) Operate the left operation control valve, deflect to left, the rotation head turn left. Deflect to right, the rotation head turn right. If the moving arm has the deflecting function, it must make sure the machine stay the moving-arm deflecting mode before it rotating 6.

  • Page 99: Working On The Slope Or In The Water

    Hydraulic Digger Working On The Slope or In The Water Warning:It is dangerous to work near the slope of the piedmont. ● When the machine drives, the bucket should away the ground 20-30cm ● No back up on the slope. ●...
  • Page 100 Hydraulic Digger 4-22...

  • Page 101: Out Of The Muddy Condition

    Hydraulic Digger Out of The Muddy Condition It needs to operate the machine careful to avoid get into the mud. If the machine gets into the mud, please do as follow: A. One side of the pedrail gets into the mud Caution: When it uses the moving-arm or the lever to uplift the machine, it must make the bottom of the bucket touch the ground.(No use the gear of the bucket to push).The angle of the...

  • Page 102: Operating Manual

    Hydraulic Digger Operating Manual 1. Operation when the bucket in reverse The bucker in reverse suit for the station under the machine When the machine stay the state which like the picture, when the angle is 90 for the oil tank of the bucket and the lever、 the oil tank of the lever and the lever, it can have the max.
  • Page 103 Hydraulic Digger If the truck loads from the back easier than from the side, the loadage is more, 3. Operation of dig the ditch Make the bulldozer back and anchor into the ground. Throw out the moving-arm and the lever, and make the gear of the bucket into the ground.
  • Page 104 Hydraulic Digger 5. Shake down the sandy and the soil which in the bucket Make the lever stay the level state, the bucket stay the unload state. If the sandy and the soil don’t down, and operate the operation handle of the bucket some time with left & right, the sandy will shake down.
  • Page 105 Hydraulic Digger pedrail system 3) When the machine driving, the bulldozer doesn’t hang anything. Otherwise, it can destroy the bulldozer or the pedrail system 4) When the bulldozer lift up the machine, it should make sure the smooth road, the bucket can touch the ground. 4-27...

  • Page 106: Take-Down & Installing The Bucket

    Hydraulic Digger Take-down & Installing The Bucket Safety rule ● When it uses the hammer to knock the pin bearing, the slug maybe into the eye to make the hurt. When the person deal the operation, it need wear the safety glass、motorcycle safety helmet、the glove.
  • Page 107 Hydraulic Digger Take-down Stop the machine on the ground which hard and smooth. It requests to put the bucket to the place which can touch the ground. If the bucket fall down heavy, it will increase the resistance and difficult to take-down the pin bearing. Take-down the double nuts of the lock bolt which connect the lever and the connect lever, and take-down the bolts, then take-down the pin bearing③and the pin bearing of the connect...

  • Page 108: Place The Machine

    Hydraulic Digger Place The Machine Safe rule 1) Avoid to stopping the machine suddenly. When it places the machine, it need have enough space. 2) Place the machine on the ground which hard and smooth. No place it on the slope. If it must places the machine on the slope, it need put the stow-wood under the pedrail ,make the operation device inset the ground.
  • Page 109 Hydraulic Digger 2) After overload work when the engine is, no stop the machine immediately. It needs let the engine to run 5 minutes with low-speed, clear over-heat then stop the machine 3) Fall down the bucket and the bulldozer. 4) Push the gun to the end, pull the stop handle to the end(if the machine have) 5) Start the key and turn to “OFF”...

  • Page 110: After The Operation

    Hydraulic Digger After The Operation 1. Examining Check the digital combination instruction sheet: the water temperature of the engine、the pressure of the machine oil、the pressure of the machine oil、the oil level of the fuel and so on. 2. Locking Please lock all the things as follow: 1) The cab(don’t forget to close the window、turnover window).
  • Page 111 Hydraulic Digger Caution: When it opens the cover of the engine, the back of the engine don’t stand the person. 4-33...

  • Page 112: Takedown &Transport The Machine

    Hydraulic Digger Take-down &Transport The Machine 1. Safety rule for shipping the machine 1) Running the engine with low-speed, load/unload the machine slowly. 2) When it warm-up the machine by automatic, no load/unload the machine 3) If it cancel the operation of the warm-up when it load/unload, the speed will replace sudden.
  • Page 113 Hydraulic Digger 11) When the machine rotate the superstructure in the transport vehicle, the transport vehicle unstable. So it needs to rotate slowly and draw back the operation device. 12) It needs to wedge the wheels of the transport vehicle whether up/down the transport vehicle.
  • Page 114 Hydraulic Digger 4) Lock the rotating platform 5) Let the digger and the ramp in the line, the bulldozer stay the backside. Caution: It only operates the driving joy stick on the ramp, no operate other joy sticks or the footplate. 6) Stop driving and hold out the lever (B), and make the foreside of the pedrail declination to the soleplate of the transport vehicle.
  • Page 115 Hydraulic Digger of the transport vehicle. Warning: Before the drive leaves the seat after finish the operation, he need to uplift the left control box first and cut off the lead operate oil line. 3. Fix the machine in the transport vehicle 1) Put the operation device 2) Stop the the engine, and take out the key 3) Uplift the safety lock handle and the control box...
  • Page 116 Hydraulic Digger 4. Unload the machine from the transport vehicle 1) Need to choice the hard 、 smooth road when it load/unload. It needs to keep a safe distance with the edge of the road 2) Braking the transport vehicle, and put he stow-wood under the wheels to make sure the transport vehicle doesn’t move 3) Install the ramp between the transport vehicle and the...
  • Page 117 Hydraulic Digger lever hold out, and make the pedrail of the digger declination to the ramp, then drives to the ground. 5. Hoisting the machine A. Safety rule 1) No hoisting the machine when it has the people 2) Make sure the steel wire has the enough stronger to bear the weight of the machine.
  • Page 118 Hydraulic Digger 3) Stop the engine, make sure not have anything around the cab, then leave the machine. Close the door of the cab and the window. 4) Use the steel wire thrill through the guided wheel and the return wheel of the pedrail, the drive wheel and the return wheel of the pedrail.
  • Page 119 Hydraulic Digger and the bucket. Adjust the upside frame face to the port of the guided wheel 2) Take back the safety lock handle 3) Stop the engine, check whether the area safe. then leave the machine. Close the door and the widow of the cab and the cover of the engine 4) Make the cargo hook to hook the hoist hole of the moving arm(It has the sign near the hoist hole),then use the steal...
  • Page 120 Hydraulic Digger 6) Check whether it can replace the pose when the hydraulic oil line of the moving-arm oil tank leaks oil. 7) Stopping operate uplift when the machine leave the ground, and check whether the machine keep the balance. Operate uplift when the machine steady.

  • Page 121: Operate The Machine Under The Cold/Hot Weather

    Hydraulic Digger Operate The Machine under The Cold/Hot Weather 1. Operate the machine under the cold weather It has the special problems because of the cold weather. It need to protect the machine not destroy. 1) Electric system: Keep the accumulator cleaning, full with the power.

  • Page 122: Deposit The Machine

    Hydraulic Digger Deposit The Machine 1. Preparative before the machine deposited Please do as follow when the machine deposited long time: 1) Clearing and washing all the parts, then put the machine into the inside. If it has to put the machine outside, it need to choice the smooth ground and use the mantle to cover the machine 2) Wipe the lube to the metal surface of the piston.
  • Page 123 Hydraulic Digger lock state. 10) Lock the cut-off valve which for install the attachment. And installing a bolt in the elbow. 11) Keep the machine cleaning, and deposit the area which dry Caution: When the machine deposited, it need to adjust the pose of the machine to protect the piston of the oil tank.
  • Page 124 Hydraulic Digger 2) Immit the machine oil and lube to all the parts. 3) The moisture into the oil when the machine deposited long time. Before /after start the engine, it needs to check the oil of all the parts. If the oil includes the water, it needs to replace it. Caution:1)The deposit way which introduced can make the digger deposit one year under normal condition of the weather.

  • Page 125: Reason For The Technical Trouble& Resolve

    Hydraulic Digger Reason for the Technical Trouble& Resolve Trouble Reason Resolve ●Problem for start the engine ●Replace or check the engine ●Lack electrification of the battery ●Electrification or replace the battery ●Error use for the line or the piston of ●Mend or replace the warm-up piston the warm-up ●Error of the oil injection positive...
  • Page 126 Hydraulic Digger ●The fuel has the air ●Ejectment the air ● The pipe laying obstructed which ●Check and clean it supply the oil ●The oil injection positive replaces ●Adjust it with the ordain value ●The oil injection work not good ●Check the working pressure or the oil 3.The power...
  • Page 127 Hydraulic Digger contact assistant service Trouble Reason Resolve ●Bad fuel ●Use the better fuel 6.The engine emit the black ●The air filter obstructed ●Replace the core of the filter smoke ●Error of the oil injection positive ●Adjust it with the ordain value ●The pulverization of the nozzle not ●Check and replace the parts good...
  • Page 128 Hydraulic Digger ●Error use of the hydraulic oil ●Use the hydraulic oil which right 12.The ●The pipe laying obstructed ●contact assistant service temperature of ● The oil filter of the hydraulic oil ●Clean or replace hydraulic oil too high obstructed ●The oil pump attrite ●contact assistant service ●The oil cooler obstructed...
  • Page 129 Hydraulic Digger Trouble Reason Resolve ●The hydraulic pump destroy ●contact assistant service 16.The ●The pressure of the main safety valve ●Adjust the pressure tanks or the motor become low ●The level of the oil low ●Immit the oil working or no ●The oil suction filter obstructed ●Clean the filter power...
  • Page 130 Hydraulic Digger ●The axunge lacks ●contact assistant service ●The control valve leaks oil ●contact assistant service Trouble Reason Resolve ●The joint of the electron looses,to lead ●Inter the joint tight or repaire 22.The air-condition the clutch not good ●The belt looses ●Adjust it ,replace it if it broken system ●The fan of the blower looses...
  • Page 131 Hydraulic Digger Maintenance...

  • Page 132: General Knowledge Of Maintenance

    Hydraulic Digger General Knowledge of Maintenance New machine’s break-in The incunabulum 100 hours is the break-in period. It need to use the machine careful in the period. No let the machine do the works which overload and the work intensity too high. First 50hours,it only allow to bear overload work abut 80%.
  • Page 133 Check the calculagraph which in the instruction sheet. See the value whether the machine need to maintenance Using the purity spare parts Use the purity spare parts of Yuchai is the important factor to ensure the machine working and delay the use life. Disposing the castoff ●...
  • Page 134 Hydraulic Digger Countercheck the machine after Check and maintenance If it doesn’t countercheck the machine after Check and maintenance every time, it can happen the accident and lead the serious hurt or destroy. Check as follow: ● Whether miss some parts which need Check and maintenance ●...

  • Page 135: Maintenance Summary

    Hydraulic Digger Maintenance Summary The lube ● Use the lube which the choose list of the oil plants shows. In the stated time, it needs to replace the lube. ● Avoid the impurity(water、metal grain、dust and so on) into the lube. Many problems of the machine because of the impurity. ●...
  • Page 136 Hydraulic Digger ● Wipe the old lubricating oil The coolant ● It must use the coolant under any weather ● Check the level of the coolant. If it lacks, it need to immit. Lack of the coolant will lead the engine overheat ●...
  • Page 137 ● No install other electron element except Yuchai allow ● Need clean the electric system careful when it operated in the beach. Avoid to rust ●...

  • Page 138: Easy Broken Part

    The seal ring、the filter core、the gear of the bucket and the blade are the easy broken parts. They need time-Check/maintenance or replace. Please order the parts from the agent of Yuchai as the following list which show the part No. Item Part No.

  • Page 139: Forced Changing Part

    Hydraulic Digger 830H-1502300(FS1235) The core of the diesel oil 830H-1502400(FS16034) The filter of the machine Every 250 hours 830H-1502600(FS1242) Segregator of (core) T0405-01211 The bulb for working light Forced Changing Part Some parts are important for the machine about the safety. They are the soft pipes of the oil/ liquid.

  • Page 140: Choose List Of The Oil Plants

    Hydraulic Digger Choose List of the Oil Plants As the temperature of the condition 、the using fact to choose the oil plants.But the oil plants must pass muster: Lube or Fuel Use temperature Viscosity Fill-in Lube of the engine Chilliness area:CH15W/40 upwards General area:CH5W/30 upwards...

  • Page 141: The Tighten Moment

    Hydraulic Digger Driving reducer 1.4(Every side) The Tighten Moment Refer to the value to install the bolts、the nuts. The tighten moment of the general parts Intensity Bend Diameter of The Bolt mm Grade of Intensity The Bolt N/mm The Tighten Moment Nm 9-12 22-30 45-59...
  • Page 142 Hydraulic Digger The tighten moment of hydraulic soft pipe Rotating Nut with The Metric System Thread Metric System Outside diameter Thread of steel tube Moment Min./max M12*1.5 15-25 M14*1.5 30-45 M16*1.5 8/10 38-52 M18*1.5 10/12 43-85 M20*1.5 50-65 M22*1.5 14/15 60-88 M24*1.5 60-88...
  • Page 143 Hydraulic Digger The tighten moment of hydraulic soft pipe BSP Thread and Rotating Nut BSPP Thread Metric System Moment Min./max G1/4 15-25 G3/8 27-41 G1/2 42-76 G5/8 44-94 G3/4 95-135 115-165 G1.1/4 140-280 G1.1/2 215-365 300-500 ORFS Rotating Nut UNF Thread Specs of the lineation 9/16-18 11/16-16...

  • Page 144: Maintenance List Of Time-Check

    Hydraulic Digger Maintenance List of Time-Check Refer to the list and the calculagraph, time-Check and maintenance to the machine. If the condition of the machine bad or the working intensity strong, or it hast the hydraulic crash hammer and so on, the period of some parts maybe reduce. Period of Maintenance Item (Total of the Working Hour)
  • Page 145 Hydraulic Digger Period of Maintenance Item (Total of the Working Hour) 1000 2000 Lubricate System of The Engine&Other ▲ ●Check the level of the machine oil ☆ ▲ ●Replace the machine oil ☆ ▲ ●Replace the filter core of the machine oil ☆...
  • Page 146 Hydraulic Digger Period of Maintenance Item (Total of the Working Hour) 1000 2000 Reducer ▲ ●Check the level of the oil and immit ▲ ●Replace the machine oil ●Check the tighten moment of the reducer ☆ ▲ which connect the bolt Bear wheel、carrier wheel、guide wheel ☆...

  • Page 147: Routine Check

    Hydraulic Digger Routine Check It need do the routine Check to the machine everyday or every 10hours. 1) Check whether the machine leak oil、water or the fuel leaks 2) Check whether the parts and the attachment have the rupture、 the nick or the distortion 3) Check the hydraulic device’s fix and connect 4) Check the appearance of the parts 5) Check the working circs of the operation device、...

  • Page 148: Fuel System Of The Engine

    Hydraulic Digger Fuel System of the Engine Maintenance manual Capacity of the oil tank-----------------------------------------------------40L Check the level of the oil------------------------------------------------10h Vent the water and the impurity from the oil tank------------------100h Clean the oil tank-----------------------------------------------------------250h Check the pressure of the oil injection-----------------------------500h Replace the filter core of the fuel---------------------------------------500h 1.
  • Page 149 Hydraulic Digger 3. Clean the oil tank Clean it every 250hours 1) Vent the fuel to the container 2) Take-down the oil drain plug, take out the fliter. Top up half of the oil tank, and vent it again. 3) Clean the filter and replace. 4) Install the oil drain plug again.
  • Page 150 Hydraulic Digger Warning:The pressure of fuel which from the high-pressure oil pipe can penetrate the skin and hurt the body.It should put on the glove and the sheathy work clothes before operating. 4. Pre-filter of the diesel oil Chang the filter core every 500hours Vent the water and the dust of the separator everyday.
  • Page 151 Hydraulic Digger Caution:Don’t screw the valve too tight.It will destroy the thread. 5. Replace the filter core of the fuel Replace it every 200hours or every 3 months.It must use the sterling filter core 1) Take-down the filter of the fuel 2) Use the cloth which not cottony to clean the surface of the sealing gasket.
  • Page 152 Hydraulic Digger Caution: Check whether the base of the filter core has the old sealing gasket. If it has the old sealing water, it will leak oil. 5) Use the new fuel top up the new filter, and use the cleanly machine oil to lubricate the “O”...

  • Page 153: Cooling System Of The Engine

    Hydraulic Digger Cooling System of the Engine Maintenance manual Capacity of the radiator----------------------------------------------------5.7L Check the level of the coolant------------------------Everyday or 10h Check the rubber soft pipe and the clip------------Everyday or 10h Clean the vane of the radiator------------------------------------------500h Replace the coolant-------------------------------------Spring and Autumn Check the consistency of the coolant --------------Everyday or 10h 1.
  • Page 154 Hydraulic Digger Warning: The hot coolant will spurt when open the cover of the radiator. The way to open the cover: Open the cover little after the system cooled .Then wait it release the pressure. 2. Check the rubber soft pipe and the clip Check it everyday or every 10 hours.
  • Page 155 Hydraulic Digger Warning:It is dangerous when the compress air、the high-pressure water、the steam hit the body.It must use the glasses、the veil and so on Caution: Avoid shatter the vane of the radiator, the distance should exceed 500mm between nozzle high-pressure water or the compress air and the surface of the radiator(water tank).The vane of the radiator which destroyed lead leak water or overheat.
  • Page 156 Hydraulic Digger Warning: Don’t open the cover of the radiator(water tank) with the hot engine except the temperature of the coolant under 5. Check the consistency of the coolant It need to check the consistency of the coolant before the beginning of the cold weather.

  • Page 157: Lubricating System Of The Engine

    Hydraulic Digger impurity. If it uses this water, it will become the scale and adhesive to the radiator or the pipe of the cooling water. No use the drinking-water, too. The coolant is easy to burn. No close the fire. If the coolant into the eye, it should use the water to clean and to the hospital in time.
  • Page 158 Hydraulic Digger arrive the ordain value. Warning: After stop the engine, the parts and the oil are the high-temperature. They will hurt the body. It need wait the temperature reduce when it start to maintenance. 2. Replace the machine oil of the engine Replace the machine oil of the engine after the new machine runs 50 hours.
  • Page 159 Hydraulic Digger 5) Immit the new machine oil till the oil arrive the “Max” of the oil leveler 6) Close the cover of the sprue, and run the engine about 5 minutes. 7) After stop the engine about 10-20 minutes, check the level of the machine oil.

  • Page 160: Air Intake System Of The Engine

    Hydraulic Digger Air Intake System of The Engine Maintenance manual Cleaning period of the dust tank-----------Every 10hours or everyday Replace period of the filer core---------------------------------Every 500h 1. Clean the dust tank Clean the dust tank every 10 hours or everyday. 1) Take out the dust tank 2) Clean the dust tank Warning:The dust will enter the engine if it checkd、...

  • Page 161: Other Maintenances Of The Engine

    Hydraulic Digger 1) Open the cover of the engine, take-down the back cover of the air filter, take down the core. 2) Install the new core, and close the cover. 3. Check the air intake pipe Check whether it has the things which the intake pipe has the fray、the pipe destroy、the clip loose or the pipe break and so on Replace the pipe and the clip if it necessary,to make sure the intake system not leak.
  • Page 162 Hydraulic Digger the engine at any moment.And all the persons must keep in touch. It maybe has the danger-winded when it near the fan、the belt of the fan and so on to operate. No insert the tools or other things into the fan or the belt of the fan.Otherwise,the part rupture or fly out Warning:It has the audition problem with temporary oreverdurimg if the machine has the noise too big.It need wear...

  • Page 163: Hydraulic System

    Hydraulic Digger Hydraulic System Maintenance manual Capacity of the hydraulic oil tank-----------------------------------------40L Check the level of the oil---------------------------------------------------10h Replace the filter-----------------------------------------------------------500h Replace the hydraulic oil-------------------------------------1000－1500 h Check the pressure system---------------------------------------------500h warning: It brings the serious hurt and death if the hydraulic oil or the axunge rip into the skin.
  • Page 164 Hydraulic Digger 4) Observe the level of the oil thought the oil leveler of the hydraulic oil tank(see ①) It requests the level can see in the area of the oil leveler. No immit too more to see the oil leveler. Caution: The level of the hydraulic oil will change when the temperature up.
  • Page 165 Hydraulic Digger 4) If the oil lacks, it should supply it. 3. Replace the hydraulic oil and clean the filter Replace and clean it every 1000 hours. Warning:1)Avoid the scald, it vents the oil only after the hydraulic oil cool or before start the machine everyday. 2) When Take-down the flange cover of the sprue, it needs turn the cover slow and release the pressure to avoid the oil spurt out.
  • Page 166 Hydraulic Digger oil drain valve of the oil tank or the oil drain cock to vent the surplusage 5) Take down the oil absorbent filter(see ③) 6) Clean the inside of the oil tank 7) Clean the vent cock and the vent valve, install it again. 8) Clean the oil absorbent filer.
  • Page 167 Hydraulic Digger A. Vent the air which in the pump 1) Loose the drain bolt of the vent, and check whether it has the oil out. Over the exhaust. 2) Over the exhaust，screw down the bolt. Caution: If it run the pump without the oil, the pump will have the high temperature and make the pump break prematurely.
  • Page 168 Hydraulic Digger Caution :No rotating the machine at any time during vent the air 1) Run the engine with low-speed, loose the blowoff cock, examine whether the oil outflow from the drain bolt 2) If it doesn’t have the oil outflow, take-down the drain bolt, then immit the hydraulic oil into the crust of the motor 3) After vent the air, screw down the drain bolt 4) Last runs the engine with the low-speed, and turn the...
  • Page 169 Hydraulic Digger F. Vent the air which in the attachment If the machine has the attachment, it need run the engine with low-speed, and operate the footplate of the attachment (about 10 times),till the air vented from the pipe laying of the attachment.
  • Page 170 Hydraulic Digger 3) Take down the spring④ 4) Take down the filter element⑨ from the flange of the oil return⑩ 5) Screw down the core⑦ from the lever⑥ 6) Replace “O” ring⑧ of the core, after it install with the lever ⑥,wipe the hydraulic oil to”O”...
  • Page 171 Hydraulic Digger Caution: It must vent the pressure of the hydraulic oil tank before take-down the filter core 1) Screw down the filter shell⑤ 2) Take-down the filter core③ 3) Install the new ”O” ring ②into the groove of the filter head 4) Before install the new core ,it need wipe the hydraulic oil on the surface of the sealer, and put the core into the filter head 5) Clean the filter shell⑤...
  • Page 172 Hydraulic Digger filter core reduces,too.Avoid destroy the hydraulic pump and other hydraulic elements,it suggest the periods as follow:(Unit:Hour) Working rate of the hydraulic Replace period of the hydraulic Replace period of the filter hammer core 100% Caution: It adjust the pressure of the system as the hydraulic hammer’...
  • Page 173 Hydraulic Digger main safety adjust multi-valve which in the adjust multi-valve, till the value arrive the ordain value. Detect the guide pressure: 1) Screw the bolt of the export tie-in which for the supply valve of the guide oil(see the picture: the accumulator①),connect the manometer with the direct head and M10*1.

  • Page 174: Accumulator

    Hydraulic Digger Accumulator Check the level of the electrolyte Warning:1)If the level of the electrolyte under the low-order level, no use the accumulator. Otherwise, it will expedite the inside metamorphose and reduce the use life .Maybe it brings explode 2)The electrolyte is dangerous. It needs lot of water to wash and go the hospital when the eye or the skin touch it.
  • Page 175 Yuchai or the manufacturer of the accumulator. B. When it couldn’t Check the level of the electrolyte from...
  • Page 176 And it can use the saleratus to counteract the liquid, then use lot of the water to wash it or contact the agent or Yuchai or the manufacturer of the accumulator C. Use the indicator to check the level of the electrolyte...
  • Page 177 Hydraulic Digger 1.16,the electrification time is 2 hours; the specific gravity of the electrolyte is 1.1,the electrification time is 3 hours. Lower the specific gravity, longer the electrification time).Then use the above value of the current to electricize 15 hours. If specific gravity of the 6 single-electrolyte between 1.24-1.29, over the electrification.

  • Page 178: The Reducer

    Hydraulic Digger The Reducer Maintenance manual Lube capacity of the rotating reducer ---------------------------------0.9L Lube capacity of the driving reducer --------------------1.4L(each side) Check the level of the lube and append the oil ------------------- 250h Replace the lube -------------------------------------------------------- 500h Check the tighten moment for the connect bolt of the reducer -500h 1.
  • Page 179 Hydraulic Digger append the oil) 8) Clean the bolt ② ,install to the reducer again. The tighten moment is 12-15Nm. 2. Replace the lube (For each reducer) Replace it every 1000 hours 1) Stop the digger on the level road. 2) Turn the driving reducer make the bolt①...
  • Page 180 Hydraulic Digger 3. Check the tighten moment for the driving reducer with the connect bolt of the rotating reducer A .Fixing check for the connect bolt of the driving reducer After runs 50 hours check it the first time. Then check it every 500 hours.

  • Page 181: Support Roller,Carrier Roller& Leading Roller

    Hydraulic Digger Support Roller, Carrier Roller& Leading Roller 1. Check the tighten moment of the support roll After runs 50 hours check it the first time. Then check it every 500 hours. The tighter moment of the bolt② is 195+/-15Nm If it finds the bolt looses, it need screw it down and clean the thread additive which for lock and fix of the bolt.
  • Page 182 Hydraulic Digger 3) When the sprue has the oil out, screw down the nut②、 ③ again. Pedrail Check and adjust the tension state of the pedrail Check it every 10 hours. 1) Place the digger on the smooth and hared road. 2) Put the bulldozer back, and draw out the piston level of the oil tank till the pedrail uplift.
  • Page 183 Hydraulic Digger Warning: Don’t knock the tension spring of the pedrail. The spring will rupture when it bear the large pressure. And hurt the person. Don't take-down the spring when it in pull state. Warning: Don’t take-down the screw of 4. It can hurt the valve and somebody.

  • Page 184: Lubricating

    Hydraulic Digger Lubricating Lubricating the parts which need every 50 hours The step: 1) Start the operation device, and put the bucket to the ground 2) Put the bulldozer to the ground 3) Stop the engine 4) Clean the sprue of the oil cup 5) Lubricating the parts and wipe the superabundance 1.The part of axes from the deflecting oil tank 12.Joint of the top lever’s oil tank 2.The part of the rotating support roller...
  • Page 185 Hydraulic Digger 9. Joint of the connect lever and the bucket 10. Jont of the rocker and the connect lever, and oint of the top from the bucket’s oil tank 11. The parts of the bucket’s oil tank’ end 5-55...

  • Page 186: Air-Condition(If The Machine Have)

    Hydraulic Digger Air-condition (If the machine have) The main makeup of the air-condition as the following picture. The operation switch in the plane of the control box. About the operation and the maintenance of the air-condition, please see the user manual and the air-condition user manual. 1.
  • Page 187 Hydraulic Digger freeze to make the core or the water tank freeze, please use the coolant which the manufacture requests, which produce the main machine. Please let out the coolant if the machine stops long time in winter when it maybe freezes. 4) Please run the thermantidote every 15 days if it doesn’t use it long time.
  • Page 188 Hydraulic Digger 3. Check、adjust the belt tension of the compressor Check it every 250hours A. Check Use the finger about 12N power to press the middle part which between the drive belt wheel and the compressor belt wheel and check the deflexion about 4-5 mm Check whether the belt destroys .It need to replace when the belt pulled, no adjust value or the belt has the rift.
  • Page 189 Hydraulic Digger 4. Items of the time-ckeck Check Periods Check Item Check Content Every Month Every Quarter ★ Fastener If loose、fall off ★ Belt of air-condition The tension and fray ★ Pipeline If fray or rupture ★ Tie-in If fray of leak ★...

  • Page 190: Replace The Gear Of The Bucket

    Hydraulic Digger Replace The Gear of The Bucket It replaces the gear of the bucket before the base of the gear fray. Warning: If the operation device because of the wrong operation and lead it moving, it very dangerous when replace the gear.

  • Page 191: Washing The Plastic Cushion Of The Floor

    Hydraulic Digger 3) Clean the installing surface. Install the new gear into the base of the gear, use the hand push the axes into it, then use the hammer knock the axes into the lock to make the gear into the base of the gear.
  • Page 192 Hydraulic Digger 3) Use the clean mop to clean the floor 4) After the plastic cushion dry take back. 5-62...

  • Page 193: Fuse

    Hydraulic Digger Replace Fuse The fuse used for avoid the electric device and the wire burn. It need to replace the fuse when the fuse rust or cam see the white powder、or the fuse loose in the base of the fuse Caution:1)It must close the switch of the power supply and the start switch of the engine before replace the fuse;2)Need the fuse with the same capacity to replace.
  • Page 194 Hydraulic Digger Attachment Manual...

  • Page 195: Safety Item

    It will affect the service life of the machine and bring some safety problems, if the machine has been installed some attachment which not authorized by Yuchai. If it need install the attachment, it must contact Yuchai. If you don’t contact us,we haven’t to bear any duty about the accident or damage.
  • Page 196 ● Make sure the steady state that can not overturn when place the attachment which take down or install ● Don’t walk under the chain block when it overload. Warning: It needs the qualification certificate to operate the chain block. About the details of take-down and installation ,please contact Yuchai...
  • Page 197 Hydraulic Digger The steps of the attachment Installing & take down 1. Step for take down 1) Put the attachment on the ground and stop the engine 2) Turn the start switch to “ON” and push the left control box to the free position 3) Turn the jot stick of the operation device to front、...
  • Page 198 Hydraulic Digger 2) Put the attachment to a smooth area, use the axes A and axes B connect the lever with the hydraulic and the connect lever with the hydraulic one by on 3) Take down the bolt from the leading-in tube and outlet pie after the oil temperature down.

  • Page 199: Operation Manual Of The Attachment

    Caution: Choose the attachment which is the best one of the main machine. The type of machine is different which can install the attachment. About the attachment and the type’s choosing, please contact Yuchai. Hydraulic crush hammer penetrate direction of the 1.
  • Page 200 Hydraulic Digger Caution:No operate the oil tank to the end of the driving hammer and the body of the hammer in on line. 2) Press hammer surface of the object, and make the underpan about 5cm from the ground When inflict the wallop.
  • Page 201 Hydraulic Digger it should keep the rest about 1) Push the heavy thing or the big block use the crush hammer 2) Use the rotating operation 3) Move the hammer when do the impact operation 4) Inflict the wallop on the level ground or upwards...
  • Page 202 Hydraulic Digger 9) Throw out the oil tank of the bucket to make the machine leave the ground 5) Waver the crush hammer when it penetrate the rock 6) Peck operation 7) Operate it in the water or the muddy ground 8) Use the crush hammer hang the heavy thing...
  • Page 203 Hydraulic Digger Fast-replace tie-in 1. Install the bucket 1) Use the tommy bar to prize ① 2) Put the axes of the bucket into the②③,down the tommy bar and the bucket installed. 2. Take down the bucket 1) Use the tommy bar to prize ① 2) Take down the bucket.

  • Page 204: Daily Check Of Hydraulic Crush Hammer

    Hydraulic Digger Daily Check of Hydraulic Crush Hammer Do the daily check and the maintenance as the following list: Check or maintain item Check point Resolve Check whether the bolt/nut loose or lose Bolt of the main body Screw down the bolt or and the side of the bolt install the new bolt again Check whether the parts of the soft pipe loose...
  • Page 205 Hydraulic Digger observe whether the color changes If the oil worse, please vent the oil and clean the oil tank, Immit the new oil 6-12...

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