SUNWARD SWE20F 2019 Operation & Maintenance Manual
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SUNWARD SWE20F 2019 Operation & Maintenance Manual

Hydraulic excavator
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Operation & Maintenance
Manual
SWE20F
Hydraulic Excavator
SUNWARD INTELLIGENT EQUIPMENT CO., LTD.
Sunward Intelligent Industrial Park, Xingsha, Changsha, China
Sept.2019

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  • Page 1 Operation & Maintenance Manual SWE20F Hydraulic Excavator SUNWARD INTELLIGENT EQUIPMENT CO., LTD. Sunward Intelligent Industrial Park, Xingsha, Changsha, China Sept.2019...
  • Page 2  Only original spare parts procured from Sunward are to be used. To use parts of poor quality will be detrimental to machine’s overall performance.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS 1. SAFETY RULES ........................1 1.1 SAFETY MARK ........................1 1.2 SAFETY LABEL ........................1 1.3 GENERAL SAFETY INSTRUCTION ................. 1 1.4 PREPARE FOR EMERGENCIES ..................2 1.5 WEAR SAFETY PROTECTIVE ARTICLES ..............2 1.6 CHECK MACHINE BEFORE START-UP ................2 1.7 ADJUST OPERATOR SEAT ....................
  • Page 4 2.2 CABIN ..........................18 2.3 MONITOR PANEL ......................19 2.4 WANE CONTROL PANEL ....................22 2.5 START-UP SWITCH ......................22 2.6 HEATER ..........................23 2.6.1 WORK THEORY ......................23 2.6.2 INSTALLATION ......................23 2.6.3 OPERATION ........................ 23 2.7 RADIO ..........................23 2.8 SEAT ADJUSTMENT ......................
  • Page 5 4.2.11 HEATER MAINTENANCE ..................83 5. TRANSPORTATION AND STORAGE .................. 84 6. TROUBLE SHOOTING ......................87 7. SPECIFICATIONS ........................91 7.1 TECHNICAL PARAMETER ............. 错误！未定义书签。 7.2 TECHNICAL INTRODUCTION ..................93 7.3 OPERATION PARAMETER ..................... 96 8. ATTACHMENT ........................99 8.1 ELECTRIC DRAWING ...................... 99 8.2 HYDRAULIC DRAWING ..............

  • Page 6: Safety Rules

    1. SAFETY RULES 1.1 SAFETY MARK Fig 1-1 is the mark to remind of safety, when you see this mark on the machine or in the manual book; it indicates that the human body is in danger of injury. 1.2 SAFETY LABEL There are various labels at various points of machine, in these labels, various words indicate various hurt risks, such as “DANGER”, “WARNIGN”, “CAUTION”...

  • Page 7: Prepare For Emergencies

    3) Don’t refit machine without authorization, otherwise it will affect the performance and service life of machine, or may cause human body hurt oreven death. 1.4 PREPARE FOR EMERGENCIES All concerned people should be cautious so as to prevent accident from occurring, and at the same time, deposit first-aid kit and fire extinguisher nearby, and place the phone numbers of hospital and fire department near telephone to ask for help in case of emergency.

  • Page 8: Forbid Hitching Other People

    1.10 FORBID HITCHING OTHER PEOPLE When the machine is in operation or traveling, prohibit other people except operator staying on the machine. 1.11 KEEP MACHINE AWAY FROM ELECTRICITY TRANSMISSION LINE Any part or load of machine touching electricity transmission line will cause human death or GBH. Prohibit machine or its load being close to electricity transmission line, the machine should be 3 meters away from line.

  • Page 9: Operate Digging Work Safely

     If signalman is needed, he or she should use hand signal. Only when both signalman and operator understand the meaning of signal, the operator can operate the machine traveling and swinging.  Understand all the meanings of flag, mark, and signal, and determine the person who is in charge of signaling.

  • Page 10: Avoid Accident By Control Failure

    1.15 AVOID ACCIDENT BY CONTROL FAILURE When the machine loses control, if someone tries to mount on or stop machine, it will cause GBH or death. To avoid the machine losing control, pay attention to the following proceedings:  Place the machine on horizontal ground, try your best not to stay on slope, and stop machine as following procedures: Lower the bucket to the ground.

  • Page 11: Support Machine Correctly

     Safety in maintenance If maintenance must be made during engine operation, there must be somebody in cabin. If the machine must be lifted, then the angle between boom and arm must be kept between 90-110° to support the lifted parts stably in maintenance work. Never work under the machine being lifted by boom.

  • Page 12: Store Parts Safely

    1.21 STORE PARTS SAFELY  The stored parts, such as bucket, hydraulic breaker, etc, are likely to fall down, causing GBH or death.  By all effective means, store parts and machine safely to avoid falling down. Don’t permit unauthorized people, especially children being closed to the parts storage area.

  • Page 13: Beware Of Inhaling Fog Or Exhaust Gas

    1.26 BEWARE OF INHALING FOG OR EXHAUST GAS  Inhaling engine exhaust gas will cause disease, so much as, or death.  If it is necessary to operate machine in the building, open door and window to ensure well ventilation, or use long exhaust pipe to discharge smoke.

  • Page 14: Remove Paint Before Welding Or Heating

    1.31 REMOVE PAINT BEFORE WELDING OR HEATING  Prevent bringing potential poisonous gas and dust.  When paint is heated up by welding or by other methods, it will cause poisonous gas.  Remove paint as following methods before welding or heating up.

  • Page 15: Emergency Exit

    Before every shift or 8-hour operation, check loosened, twisted, hardened, or cracked cable and wire. Before every shift or 8-hour operation, check lost or damaged connectors. Before operation, tighten, repair, or replace any loosened or damaged cable, wire and connector. If the cable or wire is loosened or twisted, don’t operate the machine. ...

  • Page 16: Other Safety Marks

    Note: it is suggest to wear ear shields for long time operation. The exposure to the vibrations can be considerably reduced observing the following recommendations: -- the correct equipment for the machine and for the work to do; --select the suitable seat, which can reduce the vibration to the operator sufficiently. (remark: the seat provided in the machine has complied with spectral class EM 6 of EN ISO 7096:2008);...
  • Page 17  Warning： Please stay away from the loader arm clearance area.  Warning：Please near away from the rotating area.  Warning：Pay attention to machine’s lifting capacity in operation. The lifting capacity is based on the criteria of the machine being level on a firm supporting ground.

  • Page 18: Machine Familiarization

    2. MACHINE FAMILIARIZATION Name of excavators Development Crawler Cabin Weight（Kg） Model Swing code No. allocation allocation With Rubber Closed cab 1940 swing crawler SWE20F With Rubber Open cab 1840 swing crawler Note: The above weight figures are measured with the following five requirements: 1. Diesel oil tank is full (diesel oil instrument displays full);...

  • Page 19: Position Of The Various Machine Components

    2.1 POSITION OF THE VARIOUS MACHINE COMPONENTS FIG. 2-1 1. Cabin 12. Dozer cylinder 2. Seat 13. Bucket 3. Rear hood 14. Link rod 4. Middle hood 15. Swing arm 5. Cab operation platform 16. Bucket cylinder 6. Traveling motor 17.

  • Page 20: Cabin

    2.2 CABIN 1 Monitor 2 Heating/defrost alternation switch 3 Right operating handle 4 Bulldozer control rod 5 Cigar lightener 6 Engine accelerograph speed control 7 Starting switch 8 Wane control switch 9 Left operating handle 10 Pilot safety rod 11 Assisting control pedal 12 Right-traveling control rod 13 Arm swing control pedal FIG 2-2...

  • Page 21: Monitor Panel

    FIG. 2-4 2.3 MONITOR PANEL FIG.2-5 1 — 2 — Automatic idling indicator Working Light indicator 3 — 4 — Engine oil pressure warning indicator Work hour meter 5 — 6 — Engine speed meter Electric charging indicator 7 — 8 —...
  • Page 22 9 — 10— Air filter clogged indicator lamp Flameout control indicator 11— 12— Cooling Water temperature indicator Sound cancel button 13— 14— High speed traveling control button Working Light control button 15— 16— Screen switch button Fuel level indicator 17— 18—...
  • Page 23 pressure is low or coiling water temperature is high); and the buzzer warning ; after 30seconds engine stops working. 11 — Cooling Water temperature indicator This indicates the engine cooling water temperature. The pointer is within green range when the water temperature is normal;...

  • Page 24: Wane Control Panel

    2.4 WANE CONTROL PANEL 1－windshield wiper switch This switch turns on and off the cabin windshield wiper. When press this button, wiper starts working, and the green lamp turns on, press the button again, green light turns off, which means the wiper has stopped.

  • Page 25: Heater

    let go of the key. 2.6 HEATER 2.6.1 WORK THEORY High and low port of engine circulating water is connected with inlet and outlet of heater core separately by hose. Open hot water valve when heating, circulating water (about 90 °C) will flow into the heater core, open airflow switch, warm air will blow continuously, thus obtaining heating effect.

  • Page 26: Seat Adjustment

    2.8 SEAT ADJUSTMENT FIG. 2-9 seat (As figure 2.9) is a specially designed deluxe driver seat for construction SC29-32 machineries. The backrest and cushion are both designed according to the body engineering ergonomics, which offers the driver the most comfort. The seat is assembled with a suspension device, which can help to reduce harmful vibration effectively and ease the fatigue of the driver.

  • Page 27: Pilot Safety Lever

    “Neutral”，that means there are some malfunctions of the system. Push the safety valve to “Lock” position, turn off the engine switch at once and contact the nearest sunward dealer. 2.10 ENGINE ACCELEROGRAPH SPEED CONTROL LEVER Engine accelerograph lever adjusts engine revs.

  • Page 28: Pilot Operation

    2.11 PILOT OPERATION Operation marks： You should clearly understand the corresponding part of each control lever. The instruction of this manual is established under the international standard. These control levers are used for the operation of boom、arm、bucket、swing、boom swing and dozer (undercarriage extending).
  • Page 29 operations of the two joysticks. The horn button is equipped on the joystick. C. Dozer (undercarriage extension) control pedal This control lever can control the dozer or undercarriage extension by composite operation with the dozer & undercarriage transform switch. (A)－lift the dozer/track becomes narrow (B)－lower the dozer/track becomes wide FIG.2-14 D.

  • Page 30: Open And Close Front Window

     Set the pedal to lock position when it is not being used, if any controls should be touched accidentally when the pedal has not been locked, it may cause serious accident!  These devices are used to lock the boom swing and assistant pedal.

  • Page 31: Accessory And Tool List

    2.14ACCESSORY AND TOOL LIST Random accessory list COD. Name Quantity 703101008002 GREASE CUP 703101010001 GREASE CUP 720211000008 FUSE PLATE 720211000009 FUSE PLATE 720211000010 FUSE PLATE 720211000011 FUSE PLATE 720211000018 FUSE PLATE 750401000009 GREASE GUN 750401000039 GREASE GUN 790010000001 WORK CLOTHES 720245010004 Lgnition Key...
  • Page 32 Tool list COD. Name Quantity 740505000119 TOOL BOX 815299010001 TOOL PACKAGE 740104000019 HEX WRENCH 740104000003 HEX WRENCH 740104000004 HEX WRENCH 740104000005 HEX WRENCH 740104000006 HEX WRENCH 740104000007 HEX WRENCH 740115000001 DOUBLE OPEN END WRENCH 740115000022 DOUBLE HEAD WRENCH 740115000002 DOUBLE OPEN END WRENCH 740115000003 DOUBLE OPEN END WRENCH 740115000004...

  • Page 33: Identifier

     When the machine is used with other purposes not in this manual, you have to get the consent of Sunward or its agents and obey relative regulations in the place where the machine is used.

  • Page 34: Operate Engine

    2) Every 8-hour operation or everyday  Carry out the 8-hour operation or everyday maintenance.  Pay attention to liquid leakage.  In the first 100-hour or when work in mud, lubricate the pivot of working instrument every other 8 hours’ operation. 3) After first 50-hour operation ...
  • Page 35 Keep all people away from machine and remove barrier. Check diesel engine Place the machine on a horizontal ground, check the engine oil level (stop engine, the engine oil will return to the tank 15 minutes later) The oil dipstick should be in the range of “MIN” and “MAX”...
  • Page 36 Engine staring and stopping mark： FIG. 3-5 Before starting engine 1) Keep pilot valve control lever locked and pilot handle & travel pole neutral. Operator sits on seat. 2) Turn key switch to ON position, all indicator lights come on except engine hour meter and LCD module, buzzer tweets, self inspection is finished after 2 seconds and the monitor system is on normal working condition.
  • Page 37 Start engine in cold weather 1) Keep pilot valve control cut off pole to the lock position, pilot joystick and travel pole at the neutral position. 2) Turn key switch to "ON" position. 3) Right-turn key switch to "HEAT" position, about 30 seconds later, indicator light comes on, it means the preheating work is finished.

  • Page 38: Travel Control

     Earth the 12V cathode (-), and only use 12V assistant battery.  When the battery exhausts, start engine with assistant battery. 1) Connect assistant battery ① Connect assistant battery  Stop engine which is equipped with assistant battery. (Red) ...

  • Page 39: Travel With Handle Control

    3) Turning in one point  Turn left (FIG. 3-9): Treadle right pedal 2 forward and treadle left pedal 3 backwards. (FIG. 3-6) FIG 3-9  Turn right (FIG. 3-10): Treadle right pedal 4 backwards and treadle left pedal 1 forward. (FIG. 3-6) FIG.3-10 4) Turning with one side crawler (FIG.3-11)

  • Page 40: Travel Speed

    1) Straight travel: Push two handles forward at the same time. FIG.3-13 2) Straight back: Pull two handles backward at the same time. Turning in one point  Turn left (FIG. 3-13): Push right handle 2 forward and pull left handle 1 backward. ...
  • Page 41 2) On uneven ground, travel at low speed and avoid accelerating, stopping or changing directions abruptly. 3) When working in water, check the depth of the water, make sure that the water’s depth is not higher than the half of the track roller. Never dip the rear end of the machine into water. ...

  • Page 42: Excavation

    7) The machine must travel in the pose shown in fig 3-17 when traveling up on a slope of 15° or more. ～ 8) The machine should travel at low speed and in a pose shown in FIG. 3-18 when it is traveling down 20～30cm on a slope of 15°...
  • Page 43 Control with right pilot handle Right figure is the obverse view of right pilot handle (when operator sits on the seat). The four movements of handle can make the excavator move as follows. a —— Raise boom b —— Lower boom c ——...
  • Page 44  Do not allow operation on rocks (neither hard rocks nor soft ones).  Do not allow breaking or flat operation by slewing the machine. (e.g break wall or flat the ground)  Do not allow digging the bucket teeth into ground while slewing. ...
  • Page 45 keep low noise running, try your best not to run at maximum accelerograph, the best revs of engine should be 1600-1800 r/min. 13) Before every shift, according to the rules, inject grease to all reaming connections through grease nozzles until the grease overflows. Otherwise it will cause axle and sleeves damage. Park excavator 1) Place excavator on a horizontal ground.
  • Page 46  Keep the angle between boom and armwithin a range of 90°--110°, and place the bucket arc on ground.  Slew superstructure 90° and lower bucket to lift one side of crawler off ground. Don’t dig into the ground with bucket teeth when the machine is in backhoe condition.
  • Page 47 excavator position often. Backhoe operation 1) Place the bucket teeth on ground while the angle between bucket bottom and ground is 45°. 2) Apply arm to be the main digging force, pull bucket to the machine direction. 3) When dirt adheres to the bucket, remove arm and (or) bucket quickly to throw dirt.
  • Page 48 the same time enables the leveling operation more accurate. Prevent collapse 1) Place traveling motor to the rear end of machine to work while the machine and the digging surface are in certain angle or perpendicular. Wrong 2) Don’t place machine at the edge of trench or digging area.
  • Page 49 impact objects with bucket. Prevent misuse of machine 1) Don’t treat traveling movement as accessional digging force. Otherwise it will damage the machine. Wrong 2) Don’t raise the front and rear of machine and treat FIG.3-34 the weight of machine as accessional digging force. Otherwise it will damage the machine.

  • Page 50: Lift Work

    objects, otherwise it will damage dozer blade or crawler system. 3) When the machine is traveling, dozer blade can’t hook any object, otherwise it will damage dozer blade or crawler system. 4) When prop up machine with dozer blade, the ground should be plane to ensure dozer blade touch ground stably.

  • Page 51: Hydraulic Breaking Operation

    1) Sling/chain should tightly bind the load, the workman should glove when bind sling/chain. 2) Connect sling/chain with bucket lifting ring, curled bucket and retracted arm. 3) Before start, uniform the hand signal with signalman. 4) Acquaint with the positions of all workmen in the range of work area. 5) Mark hand rigging on the load to ensure the people pulling hand rigging is away from load.
  • Page 52 1) Operate machine slowly, the stability of machine will be decreased because the hydraulic breaker is heavier than the bucket. Therefore, use dozer blade to support and work in front of dozer blade. Wrong 2) Avoid hammering work with hydraulic breaker. Never use boom or arm to break objects, otherwise it will damage machine.

  • Page 53: Boom Swing

     The figures with mark ★ apply for excavators whose hydraulic breaker operation time is more than 100%. For the hydraulic breaker operation time ratio is less than 100%, the replacement interval should be as the diagram shows.  When the machine operates hydraulic breaker continuously more than 100 hours, replace hydraulic oil filter core.

  • Page 54: Maintenance

    You can lock them just by putting the lock pedal on it. A――Unlocked position B――Locked position The figure to the right shows the maximum swing distance of boom swing from superstructure central line. 4 MAINTENANCE FIG.4-1 CORRECT MAINTENANCE INSPECTION PROCEDURE Please read this manual carefully and learn how to maintain excavator correctly.
  • Page 55 Use recommended fuel, hydraulic oil and lubricant.  Only use original SUNWARD parts.  If user doesn’t use recommended fuel, hydraulic oil, lubricant and original SUNWARD parts, the warranty will automatically be invalid.  Never adjust engine rev limiter or hydraulic system safety valve.
  • Page 56 Use fuel and lubricant correctly Always use recommended fuel and lubricant, otherwise it will damage the machine and lose the warranty of Sunward. Preparation for maintenance 1) Place the machine on a hard horizontal ground. 2) Lower the bucket to the ground.
  • Page 57 Engine maintenance Please carry out periodic maintenance in the engine manual. Periodic replacement of hydraulic hose 1) Make sure to carry out periodic inspection of machine to guarantee safe operation. If listed parts are damaged, it may cause serious fire. Because it is difficult to judge the aging situation of these parts by vision, you should replace them at listed intervals.

  • Page 58: Maintenance Guide

    4.2 MAINTENANCE GUIDE 4.2.1 ADD LUBRICANT GREASE ★★ M eans that these parts need maintaining when work in water or mud. Recommended lubricant grease brand and specification Position: bucket, arm, boom, slewing gear, slewing bearing, etc. From —20 to 40°C（from —4 to 104F） BP petroleum BP Energrease Ls—EP2...
  • Page 59  The performance of engine oil is very different, commonly the engine oil adopts API or CCMC standard.  YANMAR engine company recommends to use engine 3TNV70-SSU(API classification CD) In order to make the correct choice of a commercial oil, please refer to the “ operation YANMAR and maintenance manual.”...
  • Page 60 Check engine oil level The reading will be imprecise if In order to get correct value, check check oil level immediately after oil level before starting engine stopping machine. Make sure to cool everyday and make sure to park the down the engine oil at least 15 excavator on level ground.

  • Page 61: Gear Oil

    7) Take off the outlet plug, pour the oil into a 10L container through a clean cloth. The engine oil may be very hot, please be cautious of scalding. 8) After oil is vented, check whether there is metallic chipping on cloth. 9) Fit and screw down outlet plug.
  • Page 62 Recommend gear oil Brand Gear oil Manufacturer -20℃--40℃ Esso Esso G ear O il GP80-90,GP85W-90 Nippon Petroleum Gear Lube Sp90 Mobil Mobilube Gx90 Fina GL-580W-90 GREAT WALL brand of China 85W/90 Petrochemical Shanghai oil refining factory API-GL-4 85W/90 Traveling reducer Check oil level…every 500 hours operation 1) Park the excavator on a level ground.

  • Page 63: Fuel System

    oil. 7) Re-fit on oil drainage port plug. 8) Take out filler cap. Fill in gear oil until the oil level is equal to the oil filler hole. 4.2.4 FUEL SYSTEM Interval (hrs) Parts name 1000 2000 △ 1. Vent fuel tank sediment 2.
  • Page 64 Vent the sediment in fuel tank 1) Rotate the superstructure flat roof 90°, and park the excavator on level ground. 2) Lower the bucket to ground. 3) Run engine at low revs for 5 minutes. 4) Shut off engine, and take out key switch. 5) Pull the pilot control lever to lock position 6) Open the vent valve on the bottom of fuel tank for several seconds, vent water and sediment.
  • Page 65 Hose end crack replace Hoses with knitted cover crack replace Every 200 hose brushfire protrusion replace hours replace（adopt proper hose bending bending semidiameter） hose end and connector distortion & eroding replace Please use the original components of sunward only.

  • Page 66: Hydraulic System

    Exhaust air from fuel system. Air in the fuel system will cause stat-up difficulties and abnormal operation of engine. After venting water and sediment from precipitator, make sure to exhaust air from fuel system after replacing the fuel filter or venting over the fuel tank. Exhaust air from fuel system by pushing down the joystick on fuel filter seat.
  • Page 67 Inspection and maintenance of hydraulic system The hydraulic parts will be very hot during operation. Please remember to cool down excavator before inspection or maintenance. 1) Make sure to park the machine on a firm level ground when maintaining hydraulic system. 2) Lower bucket to ground, and stop engine.
  • Page 68 8) Fill same brand & spec. hydraulic oil, never use different brands of oil at the same time. When you want to use “recommended hydraulic oil brand and specification” listed oil, make sure to replace all hydraulic oil in the system at the same time. Never use other hydraulic oils not included in the list.
  • Page 69 2) Lower bucket to the ground. 3) Run engine idle for 5 minutes. 4) Stop engine, and take out key switch. 5) Pull pilot control lever to lock position. Don’ t loosen vent plug before oil cools down, the hydraulic oil may be hot enough to cause scald.
  • Page 70 1) Release oil vent plug ③ at the bottom of hydraulic oil tank by spanner to vent the oil. And fill the scrap oil into some kind of container. 2) Release the rubber hose connecting oil return hole flange ② and oil sucking hole flange ④. 3) Remove the oil return hole flange ②...
  • Page 71 Check the hoses and pipes…everyday…every 200 hours The jets of high pressure liquid can penetrate skin and cause serous damage. 1) Inspect leakage with cardboard, pay attention to protect your hand and body not touching high pressure liquids 2) If accident occurs, see the doctor at once. 3) Any liquid penetrated in skin must be cleaned FIG.4-13 within a few hours.

  • Page 72: Air Filter

    Please original components of sunward only 4.2.6 AIR FILTER interval（hour） Parts name 1000 2000 when △ Clean 1．Air filter core indicator light replace After 5 times clean or 1 year operation 2．Air filter and Check the △ connecting seal pipes...
  • Page 73 rubber ring ④ and release shell (8). 7) Release the lock catch and take out the dust collection cup ⑥. 8) Clean the interior of the dust collection cup ⑥ 9) Take out the filter core ⑦. 10) Cover the back of the shell of the air filter with cloth or adhesive tape to avoid the entering of dust.

  • Page 74: Cooling System

    4.2.7 COOLING SYSTEM Interval (hours) Parts name 1000 2000 △ 1. Check cooling water level 2. Check and adjust fan belt ※1 △ tension △ 3. Replace cooling water 4. Clean radiator △※3 interior and hydraulic oil exterior When replace cooling water cooler core ...
  • Page 75 Check cooling water level…everyday ① Before the system cools down, don’t loosen water filler cover ① radiator. Screw off the cover slowly, release pressure before When engine is running, the cooling water level should reach the lower surface of flume neck. If the water level is lower than the lower surface, add cooling water to water tank.
  • Page 76 Replacement of coolant every 1000 hours  Shut off engine and cool down the machine before operation.  The body、muffler、radiator and other parts of the machine will be very hot when the engine is just stopped, touching these parts may cause serious scald. ...

  • Page 77: Others

    engine after the coolant level is stable and stay at the appointed height. 11) Check the coolant height, then screw down the water tank cover. 4.2.8 OTHERS Interval (hours) Parts name 1000 2000 1 ． Check abrasion and △ —— laxation of bucket teeth 2．Replace bucket When necessary...
  • Page 78 Various buckets Correct various teeth assembly.  Fit the lock pin into the hole completely as instructions.  Check the bucket teeth at regular interval to ensure the abrasion, don’t exceed the scheduled limitation. Replace bucket FIG.4-22 Wrong To prevent injury caused by flying off metal scrap when beat the connection rod in or out, wear goggles, safety glasses or other safety instrument.
  • Page 79 Lubrication of control lever Park the excavator with engine off, takes out the key, set pilot safety control lever to lock position. If not, the sudden movement of excavator may cause serous damage. FIG.4-25 Add some lubricant to the control lever and pedal if they can not move smoothly.
  • Page 80 Check track lag …every 50 hours (or when necessary)  Please use wood block, jack or other firm and stable supporter to lift the machine. Never work while there is not enough support of the machine, especially when the hydraulic cylinder is working. ...
  • Page 81 4) Check the track tensity. Replace rubber track Check the rubber track and repair or replace them immediately when following conditions appear. And contact the SUNWARD dealer for repair or replacement. FIG.4-31 1) If the track has been pulled longer and can not recover, it should be replaced immediately.
  • Page 82 2) Don’t use the moment in the following table when assembling plastic caps, or the cap may be broken. Contact the SUNWARD dealer or after service department for help when doing this. 3) Use standard pieces of bolts and nuts in the same specification for replacement.
  • Page 83 Spanner Screw thread Screw moment（N.m） Screw thread specification（mm） specification M6×1.0 9.8±0.5 12，13 M8×1.25 22.6±1.1 14，17 M10×1.5 47.1±2.4 Thick screw 17，19 M12×1.75 83.4±4.1 thread 19，22 M14×2.0 134.4±6.7 22，24 M16×2.0 207.9±10.4 27，30 M20×2.5 410.9±20.5 12，13 M8×1.0 24.5±1.2 14，17 M10×1.25 50±2.5 17，19 M12×1.5 87.3±4.3 Thin screw thread...

  • Page 84: Maintenance In Special Situation

    4.2.9 MAINTENANCE IN SPECIAL SITUATION Operation condition Maintenance 1． Inspect the loose and lost of connector、bolts and nuts, obvious damage and leakage. 2． Clean mud、 stone、 sand grain on the machine, check the Work in mud、water or damage、crack and loose of jointing after work. rain 3．...

  • Page 85: Protection For Long Term Store

    4.2.10 PROTECTION FOR LONG TERM STORE If the excavator needs to be stored for over 1 month, the following protection should be adopted to maintain its function during the store period. Protection for long term store Maintenance Details Clean machine Completely clean the machine, fix any malfunction.

  • Page 86: Transportation And Storage

    5. TRANSPORTATION AND STORAGE There is a possibility that the machine will roll, tip over, or fall while loading or unloading it. Therefore, you need to take the following precautions:  Select a firm, level surface and keep sufficient distance from the roadside. ...
  • Page 87 SWE20B A. total height：2370 mm C. chassis lwidth：990 mm B. total length：3820 mm D. chassis width：（track frame extended）：1360 mm E. superstructure width（cabin）：1210 mm Notice: Specific dimension in transport parameter and outline drawing are shown in section 7(technical specification) 5.3 Loading & unloading ...
  • Page 88 Warm up the excavator before loading & unloading in the cold weather. 5.4 Transportation Put chain and wire rope over the lower frame. Do not put the chain and wire on or through the hydraulic pipes or hoses. 1) Set stoppers in front and behind the crawlers. 2) Put a chain or wire rope over the lower frame and the foreside devices and fasten them securely.

  • Page 89: Trouble Shooting

    Machine storage period (1) Run the machine once a month during storage period. (2) Run the air-conditioner system once a month. Machine handling after storage (1) Wipe the grease off on piston rod surface. (2) Grease all the places that need lubrication. (3) Check engine oil level to make sure it is in a stipulated position, otherwise you should fill oil.
  • Page 90 Malfunctions and solutions Malfunction Reasons Solutions 1． Hydraulic malfunction. 1． Consult with your 2． Air bubble in hydraulic dealer. system. 2． Check whether 3． Aging hydraulic oil, leakage at oil pump inlet degenerative oil mixed with Noisy hydraulic pump and pipeline.
  • Page 91 1．Corresponding pilot valve malfunction 2．Hydraulic motor 1．Repair malfunction Slewing platform don’t 2．Consult with your dealer 3．Slewing retarder slew, slew slowly, or slew malfunction 3．Consult with your dealer 4．Slewing bearing not smoothly. 4．Repair malfunction 5．Add lubricant grease 5．Need lubricant grease into the slewing bearing.
  • Page 92 Malfunction Reason Resolution feature 1． Control pilot valve malfunction 1． Repair 2． Corresponding commutator valve and 2． Consult with the dealer Track of one side stop valve malfunction doesn’t work or 3． Consult with the dealer 3． Center connector seal damage move very slowly 4．...

  • Page 93: Specifications

    7. SPECIFICATIONS 7.1-1 20FTECHNICAL PARAMETER Engine…………………………………………………………………YANMAR diesel engine Model………………………………………………………………YANMAR 3TNV80F-SSU Displacement………………………………………………………………………………1.267L Number of cylinder………………………………………………………………………………3 Power………………………………………………………………………… 13.4 kW/2200rpm Fuel assumption…………………………………………………………………………250g/kw.h Coupling ……………………………………………………… MONOLASTIC 32 Flansch kupp lung Radiator………………………………………………………………………… 4842.077.0000V1 Hydraulic device Hydraulic pump…………………………………………………………………… plunger pump Model………………………………………………………………… PVD-0B-19P-6AG3-5807A F l o w … … … … … … … … … … … … … … … … … … … … … … … … 2 x 2 1 + 1 5 L / m i n 2 2 .
  • Page 94 Oil return filter core model………………………………………………………………EF-133 Swing mechanism Maximum output screw moment…………………………………………………………3016N.m Flat rotate speed………………………………………………………………………10rpm Slewing bearing……………………………………………Single volleyball slewing bearing traveling brake…………………………………………………hydraulic brake “+”spring pressure multiple brake (normally closed) Electric device Battery………………………………………………………………………………1X12V,60Ah Starter…………………………………………………………………………………12V,1.4KW Generator…………………………………………………………………………………12V,40A Fuel device Fuel tank capacity………………………………………………………………………………23L Travel mechanism Speed ratio …………………………………………………………………………………31 Maximum output torque moment...

  • Page 95: Technical Introduction

    7.2 TECHNICAL INTRODUCTION SWE20F is an all hydraulic track excavator with beautiful appearance, 360° rotatable flat roof, 1080mm long small rear end, all of these ensure the work in limited place. The engine is YANMAR 3 cylinder water-cooling diesel engine which has a normal rated power of 13.4kW/2200rpm.
  • Page 96 Swing drive Hydraulic swing motor drives the swing supporting of inner joggle through a planetary reducer. The normally engaged brake in drive system can ensure the safety of the machine. Boom swing The design of ultra-large angle boom swing mechanism makes the machine be applied at side ditch, side channel, foot of wall and cliff.
  • Page 97 Wide front door can extend to the front and ensure convenient passage. Glass around the cabin and turnover front window provides best view for operator. Cabin seat is designed according to the ergonomics and can provide more comfort. The surface, backrest and rigidity are adjustable and can suit different kinds of requirement from different operator.

  • Page 98: Operation Parameter

    7.3 OPERATION PARAMETER (1)Outline dimension SUNWARD (2)Working range dimension model SWE20F parameter Outline dimension(length×width×height) 3820X990X2370 1210 Distance between wheel 1555 Length of track Turret distance to ground Gyration radius of turret 1122 990/1360 Chassis width Track width Dimension parameter Ground clearance of chassis...
  • Page 99 model SWE20F parameter 3770 Max. digging height 2720 Max. unloading height 2380 Max. digging depth 1870 Max. vertical digging depth Working 4040 Max. digging radius range 3945 Max. reach at ground level Max. lifting height of dozer Max. digging depth of dozer 1565 Min.
  • Page 100 Warning： Pay attention to machine’s lifting capacity in operation Do not attempt to lift or hold any load that is greater than these rated values at their specified lift-point radius and height. The lift point is located at the bucket lifting eye Rated lift capacity(kg) 4.0m 3.0m...

  • Page 101: Attachment

    8. ATTACHMENT 8.1 20FNELECTRIC DRAWING...
  • Page 102 20FHYDRAULIC DRAWING...

  • Page 103: Hydraulic Component List

    8.3 HYDRAULIC COMPONENT LIST Name Name hydraulic oil tank diesel engine main valve plunger pump center rotation joint pilot oil source block arm cylinder swing motor left joystick (pilot control boom cylinder valve)——arm+swing right joystick (pilot control bucket cylinder valve)——boom+bucket selector valve——blade+crawler travel motor extends and retracts...

  • Page 104: About Manufacturer

    9. ABOUT MANUFACTURER Company: SUNWARD intelligent equipment Co., LTD. Trade mark: Address: 16 LiXiang Road, Xingsha economic and technologic development district, Changsha, Hunan. Tel: 0086-0731-83572739 83572783 Maintenance point: our office in some provinces and cities of China About distributor About distributor...

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