LGMG SR3369E Service Manual
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LGMG SR3369E Service Manual

Rough terrain mobile elevating work platform
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Service Manual
SR3369E/SR4069E
Rough terrain Mobile
Elevating Work Platform
△
WARNING
!
Before operation and maintenance, the
drivers and maintenance personnel are
required to read this manual thoroughly.
Otherwise, fatal accident may occur. This
manual shall be kept properly for future
reference by the personnel concerned.
LINGONG HEAVY MACHINERY CO.，LTD.

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  • Page 1 Service Manual SR3369E/SR4069E Rough terrain Mobile Elevating Work Platform △ WARNING Before operation and maintenance, the drivers and maintenance personnel are required to read this manual thoroughly. Otherwise, fatal accident may occur. This manual shall be kept properly for future reference by the personnel concerned.
  • Page 2 First edition, June 2022 First print, June 2022 LINGONG HEAVY MACHINERY CO., LTD. Add.: 12F, Building 3, Lushang Olympic City, No. 9777, Jingshi Road, Lixia District, Jinan City, Shandong Province, China Tel: 86-0531-67605017 Technical service: 86-4009666569 Web: www.LGMG.com.cn Sales of accessories: 86-0531-67605016...

  • Page 3: Table Of Contents

    3.3.1 Removing the semi-swing gate ........................21 3.3.2 Installing the semi-swing gate ......................... 21 3.4 Removing and installing the fork ..........................22 3.4.1 Removing the fork (SR3369E) .......................... 22 3.4.2 Removing the fork (SR4069E) .......................... 27 3.4.3 Assembling the fork ............................31 3.4.4...
  • Page 4 3.11.1 Installing the spool ............................50 3.11.2 Scissor fork platform control valve ........................ 50 3.11.3 Lower lift cylinder control valve ST4639-AB0E(SR3369E) ................51 3.11.4 Upper cylinder valve block ST5243-AC0A (SR4069E) ..................52 3.11.5 Lower cylinder valve block ST5242-AC0C (SR4069E) ..................53 Chapter Ⅳ...
  • Page 5 Service Manual of Rough terrain Mobile Elevating Work Platform 4.3.1 Outrigger leveling test ............................. 59 4.3.2 Fork and platform test ............................. 60 4.4 Relief pressure test ..............................60 4.4.1 Lift relief pressure test ............................. 60 4.4.2 Steering relief pressure test ..........................60 4.5 Calibration test ...............................
  • Page 6 6.2.2. Chassis harness ............................... 88 Electrical schematic diagram（SR3369E/SR4069E） ..................90 6.4 Hydraulic schematic diagram ..........................91 6.4.1 SR3369E Hydraulic schematic diagram ......................91 6.4.2 SR4069E Hydraulic schematic diagram ......................92 6.5 Diagram of common hydraulic part symbols ....................93 6.6 Diagram of common electrical part symbols ....................100...

  • Page 7: Foreword

    Service Manual of Rough terrain Mobile Elevating Work Platform Foreword You are welcome to purchase and use the products produced by Lingong Heavy Machinery Co., Ltd. This manual introduces the technical parameter and maintenance adjustment data of Rough terrain mobile elevating work platform, and explains the troubleshooting and maintenance process for qualified professional maintenance personnel.

  • Page 8: Safety Notices

    Service Manual of Rough terrain Mobile Elevating Work Platform Safety Notices The operator should understand and follow the current national and local safety regulations. If there are no national or local regulations, the safety instructions in this manual shall be applicable. Most accidents are caused by failure to comply with the regulations on the operation and maintenance of the machine.

  • Page 9: Chapterⅰsafety And Environ•Ment

    Service Manual of Rough terrain Mobile Elevating Work Platform ChapterⅠSafety and EnviroN•ment...
  • Page 10 Service Manual of Rough terrain Mobile Elevating Work Platform...

  • Page 11: Terms And Definitions

    Service Manual of Rough terrain Mobile Elevating Work Platform 1.1 Terms and Definitions Administrator: the entity or individual that directly controls the use and application of the lifting platform, which usually refers to the owner, the renter or the authorized personnel of owner who obtains the control right of the lifting platform;...

  • Page 12: Intended Use

    Lingong Group Jinan Heavy Machinery Co., Ltd. Symbol representation Symbols, color codes and symbolic words used by LGMG products have the following meanings: Safety warning sign - used for warning of potential personal injury. Observe all safety tips after this sign to avoid possible personal injury or death.
  • Page 13 Service Manual of Rough terrain Mobile Elevating Work Platform Yellow - Indicating a dangerous situation. If not avoided, it may CAUTION cause minor or moderate personal injury. Blue - Indicating a dangerous situation. If not avoided, it may NOTE result in property damage.
  • Page 14 Service Manual of Rough terrain Mobile Elevating Work Platform...

  • Page 15: Chapterⅱproduct Introduction

    Service Manual of Rough terrain Mobile Elevating Work Platform ChapterⅡProduct Introduction...
  • Page 16 Service Manual of Rough terrain Mobile Elevating Work Platform...

  • Page 17: Machine Parameters

    Service Manual of Rough terrain Mobile Elevating Work Platform 2.1 Machine parameters 2.1.1 SR3369E（S33690DTAE30）Machine parameters 1. Parameters of machine Item Parameter Item Parameter Rated load (kg/lbs) 454/1000 Fork lifting time (s) 39± 4 Extension platform rated load (kg/lbs) 140/310 Fork lowering time (s) 46±...

  • Page 18: Sr4069E（S40690Dtae30）Machine Parameters

    Service Manual of Rough terrain Mobile Elevating Work Platform 6. Fluid filling amount Item Parameter Item Parameter Hydraulic oil (L) Travel reducer gear oil (L) 0.68×2 2.1.2 SR4069E（S40690DTAE30）Machine parameters Parameters of machine Item Parameter Item Parameter Rated load (kg/lbs) 365/805 Fork lifting time (s) 61±...

  • Page 19: Specification For Selection Of Tightening Torque Of The Lifting Platform

    Service Manual of Rough terrain Mobile Elevating Work Platform Fluid filling amount Item Parameter Item Parameter Hydraulic oil (L) Travel reducer gear oil (L) 0.68×2 2.2 Specification for selection of tightening torque of the lifting platform The tightening torque tolerance range is 10% for all hydraulic seals, important transmission connectors and key processes with defined torque tightening requirements, and 20% for non-essential reference torques, which is to be rounded to the nearest integer when necessary.
  • Page 20 Service Manual of Rough terrain Mobile Elevating Work Platform Description: Table 1 gives the torques for metric-threaded joints and inch-threaded joints, and Table 2 gives the torques for UN-threaded joints, and for those torques, an error of +10% is allowed; The torque values given in Table 1 and Table 2 are based on the condition that the connected part is made of steel, and for connected part made of aluminum, the tightening torque equal to 60% of the corresponding torque in Table 2 and Table 3 shall apply and shall be rounded to the nearest integer...

  • Page 21: Key Component Moment Table

    Service Manual of Rough terrain Mobile Elevating Work Platform and 2815 for connection specification of joint at both ends of hose. According to this, the torque selected for end 28 is 135N•m, and the torque selected for end 15 is 58N•m; 2) F412 SN CACF 1210 06: SN represents heavy pressure hose, the torque at end 12 is 63 N•m, and the torque at end 10 is 53 N•m;...
  • Page 22 Service Manual of Rough terrain Mobile Elevating Work Platform...

  • Page 23: Chapterⅲ Service

    Service Manual of Rough terrain Mobile Elevating Work Platform ChapterⅢ Service...
  • Page 24 Service Manual of Rough terrain Mobile Elevating Work Platform...

  • Page 25: Platform

    Service Manual of Rough terrain Mobile Elevating Work Platform 3.1 Platform The working platform of the off-road scissor lifting platform is mainly composed of main platform, extension platform, guardrail assembly, semi-swing gate and etc. The exploded view of the working platform is shown in the Fig.

  • Page 26: Removing The Working Platform

    Service Manual of Rough terrain Mobile Elevating Work Platform supporting capacity. 3.1.1 Removing the working platform 3.1.2 Removing the extension platform △ Caution: Only when the platform is in the stowed position and the extension platform is fully retracted and locked in place can this operation be performed.

  • Page 27: Main Platform Assembly

    Service Manual of Rough terrain Mobile Elevating Work Platform Install the base plate (2) on the extension 3.1.4 Main platform assembly platform weldment (1) with blind rivets (3), and fix the four corners of each base plate with parts 4, 5 and 6. Reference tightening torque...

  • Page 28: Platform Control Unit (Pcu)

    Service Manual of Rough terrain Mobile Elevating Work Platform the main platform guardrail and the extension Name Bottom cover 20020107 platform guardrail from the platform guardrail. Housing 120020109 Emergency stop indication panel 20020108 Remove the two D-pins at the front guardrail Emergency stop switch 10420049 of extension platform.

  • Page 29: Assembling The Platform Control Unit (Pcu)

    Service Manual of Rough terrain Mobile Elevating Work Platform Electrostatic discharge damage gate from the guardrail. circuit board components. Therefore, when Undo the fasteners such as bolts (3), and performing any operation to the circuit board, remove plastic block (5) and spring (1). keep a firm contact with the metal part on the 3.3.2 Installing the semi-swing gate machine that is always grounded, or use a...

  • Page 30: Removing And Installing The Fork

    Service Manual of Rough terrain Mobile Elevating Work Platform 3.4 Removing and installing the fork 3.4.1 Removing the fork (SR3369E) Fig. 3.8 SR3369E fork assembly 5# pin Fifth inner arm 5# center pin Fifth outer arm 5# pin (steering end)
  • Page 31 Service Manual of Rough terrain Mobile Elevating Work Platform 9. Remove the 5# pin from the non-steering end △ of the machine using a soft metal hammer. WARNING: Risk of personal injury Remove the fifth outer arm from the machine. This procedure requires...
  • Page 32 Service Manual of Rough terrain Mobile Elevating Work Platform pin using a soft metal hammer, and lower the 33. Remove the 2# center pin using a soft metal cylinder to the first inner arm. hammer. 34. At the non-steering end of the machine, tap △...
  • Page 33 Service Manual of Rough terrain Mobile Elevating Work Platform first inner arm. or joint on the cylinder. 41. Lift the first inner arm by about 60cm, and 47. Place a 10cm×10cm×1.2m block under the support the safety arm between the first inner 1# center pin across both sides of the arm and the first outer arm at the non-steering chassis.
  • Page 34 Service Manual of Rough terrain Mobile Elevating Work Platform remove the cover. 58. Disconnect the upper and lower limit travel switch connecting wires, and remove the travel switch and the travel switch mounting plate. 59. Remove the fasteners that fix the pin for connecting the first inner arm to the end of the chassis.

  • Page 35: Removing The Fork (Sr4069E)

    Service Manual of Rough terrain Mobile Elevating Work Platform 3.4.2 Removing the fork (SR4069E) Fig. 3.10 SR4069E fork assembly 5# pin 5# pin (non-steering end) Fifth outer arm Third inner arm 5# pin (steering end) 3# center pin Third outer arm 3# pin (non-steering end) Upper lift cylinder rod end shaft Upper lift cylinder tube end shaft...
  • Page 36 Service Manual of Rough terrain Mobile Elevating Work Platform △ △ WARNING: Risk of personal injury WARNING: Risk of personal injury. This procedure requires specific If not properly supported during removal, maintenance skills, lifting equipment and a the fifth outer arm may be out of balance and suitable workshop.
  • Page 37 Service Manual of Rough terrain Mobile Elevating Work Platform third outer arm. △ WARNING: Risk of crushing 31. Remove the fasteners that fix the 3# center If not properly supported during removal pin. of cylinder tube end pin, the cylinder may fall 32.
  • Page 38 Service Manual of Rough terrain Mobile Elevating Work Platform the machine using a soft metal hammer. the chassis. Remove the third inner arm from the machine. 58. Lower the fork onto the cushion block placed 45. Attach the sling of the traveling crane to the on the chassis.

  • Page 39: Assembling The Fork

    Service Manual of Rough terrain Mobile Elevating Work Platform 71. Attach the sling of the traveling crane to the upper, lower and front and rear ends first inner arm without lifting. of the inner and outer arms.  72. Remove the fasteners that fix the travel Prevent the part from being lifted switch cover on the first inner arm, and above any personnel, and during the...
  • Page 40 Service Manual of Rough terrain Mobile Elevating Work Platform impact wrench; open-end wrench. mounting holes. 2. Assembling the lower lift cylinder Tools: Phillips screwdriver, hexagon socket 4. Assembling the second fork Fig. 3.13 Lower lift cylinder assembly 1. Pin 2. Bolt 3. Thick washer 4. Nut 5. Safety pin 6.
  • Page 41 Service Manual of Rough terrain Mobile Elevating Work Platform Tools: electric impact wrench 51073C, socket Upper lift cylinder control valve wrench, needle-nosed pliers, torque wrench SP67N×22, open-end wrench 13-16, torque wrench SP67N*24. 6. Assembling the safety support Lower lift cylinder control valve Scissor fork platform control valve...
  • Page 42 QSP200, socket wrench 1/2 18, open-end torque; wrench 16-18 10. Routing and tying the harness (SR3369E) 8. Assembling the wiring board of third fork The assembling method of the third fork wiring board is the same as that of the second fork wiring board.
  • Page 43 Fig. 3.20 Routing and tying the harness Figure 3.21 Assembling the fourth fork and upper (SR3369E) cylinder (SR4069E) Keep the harness and oil pipe at the fork in 1. Third outer arm weldment 2. Shaft 3. Bolt 4.
  • Page 44 Service Manual of Rough terrain Mobile Elevating Work Platform thick washer between the safety pin and the required and need to be secured by retaining fork. rings. Reference tightening torque part 13. Routing and connecting oil pipes (SR4069E) 52±5N•m; Oil pipe winding method Reference tightening torque of parts 9 and 11: 52±...
  • Page 45 Service Manual of Rough terrain Mobile Elevating Work Platform Connect the lower cylinder solenoid valve harness of the with part 3, fix the part 3 on the fork with parts fork harness to the lower lifting cylinder valve block through this hole, and tie it together with the oil pipe. 4/5, and clamp the part 3 on the other side of the fork with parts 6/7;...

  • Page 46: Replacing The Fork Slider At Platform

    Service Manual of Rough terrain Mobile Elevating Work Platform needs to be assembled, keep its wrench, open-end wrench. direction consistent with the PCU 3.4.4 Replacing the fork slider at harness. platform 17. Assembling the slider Attach the sling to the lower part of the platform at the steering end and non-steering end of the machine, and pay attention not to attaching the sling to the railing of the...

  • Page 47: Removing And Installing Wheels

    Service Manual of Rough terrain Mobile Elevating Work Platform 3.5.2 Assembling wheels Tire pattern Fig. 3.28 Installation position of fork slider at chassis 1. Shaft 2. Safety pin 3. Bolt Fig. 3.30 Rear wheel assembly Remove the slider pivot and set it aside. 1.

  • Page 48: Removing The Steering Linkage And Steering Cylinder

    Service Manual of Rough terrain Mobile Elevating Work Platform in the Fig.. record the number and location of the 2. One end of the pin with a hole is located removed washers. below, and part 4 should be placed between 5.

  • Page 49: Assembling The Axle Swing Cylinder

    Service Manual of Rough terrain Mobile Elevating Work Platform them. △ CAUTION: Risk of crushing. 3. Raise the machine by 5 cm. Place the bracket If not supported during removal, the under the chassis for support. steering knuckle may be out of unbalance or △...

  • Page 50: Removing The Axle Swing Cylinder

    Service Manual of Rough terrain Mobile Elevating Work Platform Tools: ratchet torque wrench, electric wrench, The reducer shall be installed to the left socket rear axle housing in such a way that the threaded hole of the driving motor shown 3.6.6 Removing the axle swing cylinder in the figure above is approximately 45°...

  • Page 51: Removing The Rear Axle Assembly

    Service Manual of Rough terrain Mobile Elevating Work Platform and the bolt! △ CAUTION: Reference tightening torque bolt: An O-ring is installed between the driving 100± 10N•m motor and the reducer. When installing the 3.7.3 Removing the rear axle assembly driving motor to the machine, make sure that △...

  • Page 52: Removing The Outrigger Cylinder

    Service Manual of Rough terrain Mobile Elevating Work Platform CAUTION: The Fig. 3.36 only shows the the oil pressure gradually. Prevent the oil from installation of one cylinder, and can be spraying or splashing. referenced for installation of other 5. Attach the sling of the lifting equipment to the cylinders;...

  • Page 53: 4Assembling The Outrigger Weldment

    Service Manual of Rough terrain Mobile Elevating Work Platform weldment! The scale level meter is provided 3.8.5 Assembling the outrigger cylinder at the front, rear, left, and right sides. Tools: ratchet torque wrench QSP50N3, 3/8’’ S6 hex bit socket, 3/8’’ S6 hex bit socket, hexagon head socket wrench 1/2-8mm, ratchet torque...

  • Page 54: Other Components

    Service Manual of Rough terrain Mobile Elevating Work Platform cylinder valve block, clean up the paint slag 3.9 Other components on the mounting surface of the valve block, 3.9.1 Assembling the double-pole main etc., use part 6 to install part 5 to the outrigger power isolation switch cylinder.

  • Page 55: Assembling The Dc Contactor And Converter

    Service Manual of Rough terrain Mobile Elevating Work Platform on the outside; 3.9.4 Assembling the charger and work Reference tightening torque part indicator 12± 1N•m; 3.9.3 Assembling the DC contactor and converter Fig. 3.47 Charger assembly 1. Charger 2. Washer 3. Screw 4. Cap nut Fig.

  • Page 56: Assembling The Hydraulic Oil Tank

    Service Manual of Rough terrain Mobile Elevating Work Platform with the level gauge: 23±2N•m; Phillips screwdriver. Tools: electric impact wrench DRIVER M12BD; 3.10 Assembling the hydraulic oil socket wrench 3/8-10mm; adapter 1/4-3/8; tank ratchet torque wrench QSP50N3; socket wrench 3/8 16mm. Fig.
  • Page 57 Service Manual of Rough terrain Mobile Elevating Work Platform 7. Assemble part 14 to part 13; 8. Assemble part 15 to part 14. CAUTION: Make sure that the handle is above part 14 during installation! Fix the handle of the ball valve when it is opened and needs not to be closed, so as to prevent misoperation.

  • Page 58: Valve Group

    Service Manual of Rough terrain Mobile Elevating Work Platform 3.11 Valve group 3.11.1 Installing the spool 1. Immerse the spool in clean oil to lubricate the O-ring. 2. Manually screw in the spool until it reaches the top of the O-ring, and then adjust the torque to meet specification requirements.

  • Page 59: Lower Lift Cylinder Control Valve St4639-Ab0E(Sr3369E)

    Service Manual of Rough terrain Mobile Elevating Work Platform 3.11.3 Lower lift cylinder control valve ST4639-AB0E(SR3369E) Fig. 3.55 Lower lift cylinder control valve Name Function Torque (N•m) Check valve Enabling one-way flow of hydraulic oil 40-45 Proportional solenoid valve Controlling hydraulic oil flow proportionally...

  • Page 60: Upper Cylinder Valve Block St5243-Ac0A (Sr4069E)

    Service Manual of Rough terrain Mobile Elevating Work Platform 3.11.4 Upper cylinder valve block ST5243-AC0A (SR4069E) Name Function Valve block Solenoid valve Controlling the action of upper lift cylinder Relief valve Limiting the maximum pressure of upper lift cycling Damper Damper ejector rod Plug Plug...

  • Page 61: Lower Cylinder Valve Block St5242-Ac0C (Sr4069E)

    Service Manual of Rough terrain Mobile Elevating Work Platform 3.11.5 Lower cylinder valve block ST5242-AC0C (SR4069E) Torque Name Function (N•m) Valve block Check valve Enabling one-way flow of hydraulic oil 40-45 Check valve Enabling one-way flow of hydraulic oil 40-45 Relief valve Limiting the maximum pressure of the lifting system 40-45...
  • Page 62 Service Manual of Rough terrain Mobile Elevating Work Platform...

  • Page 63: Chapter Ⅳ Commissioning

    Service Manual of Rough terrain Mobile Elevating Work Platform Chapter Ⅳ Commissioning...
  • Page 64 Service Manual of Rough terrain Mobile Elevating Work Platform...

  • Page 65: Safety Instructions

    Service Manual of Rough terrain Mobile Elevating Work Platform to maintain a sufficient safety distance from wires, 4.1 Safety instructions power supplies, and electrical equipment. Before commissioning, please make sure to Voltage Required safety refer to the Operation and Maintenance Manual, distance 3.05m/10ft 0V～50KV...

  • Page 66: Test Of Basic Functions

    Service Manual of Rough terrain Mobile Elevating Work Platform Control criteria: No DTC is activated for the 4.2 Test of basic functions GCU and PCU. 4.2.1 Pick-up inspection 4.2.3 Lifting/lowering function test 1. After receiving the machine, follow the machine checklist to check the machine to be Lifting button tested terms...

  • Page 67: Steering Test

    Service Manual of Rough terrain Mobile Elevating Work Platform yellow arrow; Control criteria: The horn sounds. Control criteria: The platform is lowered, and 4.2.6 Drive and brake function test the lowering alarm sounds. 4.2.4 Steering test Direction indication Indicator 1. Press and hold the joystick function enable Function switch;...

  • Page 68: Fork And Platform Test

    Service Manual of Rough terrain Mobile Elevating Work Platform outrigger travel switches are all triggered, the 1. After measuring the system relief pressure, four indicator lights will be on, and then the measure the lift relief pressure with the same platform will continue to level.

  • Page 69: Calibration Test

    Service Manual of Rough terrain Mobile Elevating Work Platform indication of the gauge is the steering relief as shown; press the Page-down button to pressure. Record the pressure; select the interface as shown, press the Target steering relief pressure: 10.3± 0.5 [Confirm] button to enter the password input (Mpa);...

  • Page 70: Inclination Test

    Service Manual of Rough terrain Mobile Elevating Work Platform 4. Adjust the three circled mounting points 4.6.2 2° leftward/rightward inclination shown in the above figure with the Torx test screwdriver and the open-end wrench to place the bubble of the level meter in the center, and then tighten the fixing nut.

  • Page 71: Rated Load Calibration

    Service Manual of Rough terrain Mobile Elevating Work Platform [Confirm] button enter corresponding calibration process. 5. After the full load calibration process is started, the no-load calibration process is as follows: The platform is lifted intermittently until the platform reaches the upper limit position;...

  • Page 72: Overload Function

    Service Manual of Rough terrain Mobile Elevating Work Platform platform descends continuously; After the platform is lowered to the lowest position, the horn stops sounding; The platform is continuously lifted to the upper limit position; After the horn sounds 5 times, the platform continuously descends to the bottom;...

  • Page 73: Rated Load Verification

    Service Manual of Rough terrain Mobile Elevating Work Platform function switch, and if "is On.if Off" is displayed, it means the function is switched 4.8.2 Rated load verification 1. After the calibration is completed and the overload function is switched on, lift the fork with GCU to verify that the fork can be lifted to the calibrated height, and if not, adjust the Adjust the parameter as required...

  • Page 74: Load Test

    LCD screen will display "Set parameter 4.9.2 Load test (1.2 times rated load) enter" SR3369E: 3. Press the enable button to access the Select 1. Extend one side of the platform in place, Options screen, and press the up and down place a 376.8Kg counterweight on the fixed...

  • Page 75: Load Lifting Time

    Target lifting time of SR3369E: 39± 4(s); 4.11.3 Adjustment of lowering speed Target lifting time of SR4069E: 61± 4(s); 2. Lowering time: After measuring the lifting time, operate the machine reversely with the same method to measure the lowering time;...

  • Page 76: Lifting Height Test

    "Down speed 55,100". Press the Page-up/Page-down button to adjust and set the parameter as required. 1. After the platform is lifted to the top (SR3369E: After the setting is completed, perform 9.7m/SR4069E: 11.9m); verification, and if it still does not meet the 2.

  • Page 77: Low Speed Driving

    Service Manual of Rough terrain Mobile Elevating Work Platform "Max high drive speed" interface, and press 4.15 No-load braking distance test the [Confirm] button; 1. Select the high-speed driving mode, and start 3. After pressing the [Confirm] button, the the machine 10m before the power cut-off screen will display "High speed drv 98,100";...

  • Page 78: Load Lifting And Walking Speed Parameter Adjustment

    Service Manual of Rough terrain Mobile Elevating Work Platform and criteria; can climb the slope; 2. Stop the machine on the gradeability test 4.17 No-load lifting and walking platform with a gradient of 35% speed parameter adjustment Control criteria: The machine doesn’t slip. CAUTION: Control the speed during the uphill and downhill driving test;...

  • Page 79: Basic Operation

    Service Manual of Rough terrain Mobile Elevating Work Platform outrigger such as the ball-head outrigger (PCU) base are free of breakage, weld crack and 1） Forward/backward travel other quality defects; a） After the system is initialized, check 4.21 Basic operation whether there are people, animals or other obstacles around the vehicle, and 1.
  • Page 80 Service Manual of Rough terrain Mobile Elevating Work Platform of blue arrow to retract the outrigger. When the outrigger is landed on the ground firmly, the indicator light on the button will go on. 5） Automatic leveling The vehicle needs to be leveled via outriggers when it is tilted, and the control system has the outrigger automatic leveling function.

  • Page 81: Chapter Ⅴ Maintenance

    Service Manual of Rough terrain Mobile Elevating Work Platform Chapter Ⅴ Maintenance...
  • Page 82 Service Manual of Rough terrain Mobile Elevating Work Platform...

  • Page 83: Compliance

    Service Manual of Rough terrain Mobile Elevating Work Platform 5.1 Compliance △ If you need to replace the manual, 1) The operator can only perform routine please contact the company’s service maintenance items as specified in this personnel. manual. 5.3 Checking the labels and signs 2) Regular maintenance inspections should be It is necessary for safe operating equipment performed by trained service technicians as...

  • Page 84: Checking The Wires

    Service Manual of Rough terrain Mobile Elevating Work Platform  Wear pad injury or death. Do not wear rings, watches or  Tire and wheel other jewelry.  Limit switch, horn Check if the ground wire under the chassis is ...

  • Page 85: Checking The Electrical Contactors

    Service Manual of Rough terrain Mobile Elevating Work Platform or serious personal injury. Remove all 1） Open the battery side cover. rings, watches or other accessories. 2） Visually check the following aspects of the contactor: △ Warning: Transitional burning Risk of body injury. The battery Transitional bending Transitional pitting contains...

  • Page 86: Checking The Leakage Of Hydraulic Oil

    Service Manual of Rough terrain Mobile Elevating Work Platform and long service life. A dirty or clogged vent △ If the working enviroN•ment is cap may cause poor machine performance. dusty, this check should be performed Frequent checks should be performed under more frequently.

  • Page 87: Replacing The Hydraulic Tank Air Filter

    Service Manual of Rough terrain Mobile Elevating Work Platform ⑥ Turn the key switch to the ground control unit position of the level gauge (long level gauge) or 1 / 2 - 2 / 3 position of the level gauge and pull out the red emergency stop buttons on (short level gauge).

  • Page 88: Checking The Oil Level In The Reducer

    Service Manual of Rough terrain Mobile Elevating Work Platform Flush the inside of the hydraulic oil tank with should be changed when it is found unqualified after checking. a mild solvent.（ First clean one side with △ chemical cleaning agent. After drying, rinse This step should be performed with clean hydraulic oil and drain the cleaning when the frame is in the retracted...

  • Page 89: Replacing The Reducer Gear Oil

    Service Manual of Rough terrain Mobile Elevating Work Platform Fill the oil from the reducer’s filler hole at a performance degradation continuous operation may result in component damage. high point till the oil level is the same as that Rotate the drive unit until one plug is at the in the side hole at the bottom.
  • Page 90 Service Manual of Rough terrain Mobile Elevating Work Platform...

  • Page 91: Chapter Ⅵ Appendix

    Service Manual of Rough terrain Mobile Elevating Work Platform Chapter Ⅵ Appendix...
  • Page 92 Service Manual of Rough terrain Mobile Elevating Work Platform...

  • Page 93: Machine Fault Codes

    Service Manual of Rough terrain Mobile Elevating Work Platform 6.1 Machine fault codes Display Description Machine response System initialization error Stop all actions System communication error Stop all actions The machine type is not set for the first use Stop all actions Machine type setting invalid Stop all actions BMS communication error...

  • Page 94: Description Of Harness No

    Service Manual of Rough terrain Mobile Elevating Work Platform 6.2 Description of harness No. 6.2.1 Outrigger module harness To Y14 left front outrigger solenoid valve To Y10 outrigger extension solenoid valve DT04-8P chassis harness Here, match with the connector DT06-8S shall be considered. The hole of the connector shall be blocked by hole plugs with no harness crimped.
  • Page 95 Service Manual of Rough terrain Mobile Elevating Work Platform Name Color Size Name Color Size Negative electrode Black 1.25 J406 Left front outrigger travel switch White 0.85 Positive electrode 1.25 J404 Right rear outrigger travel switch White 0.85 J412 Outrigger retraction solenoid valve Y11 White J403 Left rear outrigger travel switch...

  • Page 96: Chassis Harness

    Service Manual of Rough terrain Mobile Elevating Work Platform 6.2.2. Chassis harness Littlefuse fuse seat model Valve block pressure sensor OFHW0001 is to be used, both ends of B24 are to be ultrasonic welded, GPS interface Connector model: and the fuse with rating current 7.5A is B-harness size: 0.85 to be selected The harness size for B24c, B- and B48 is 1.25mm...
  • Page 97 Service Manual of Rough terrain Mobile Elevating Work Platform Name Color Size Name Color Size J212 Lift pump speed sensor signal White J209 Floating left outrigger Y93 White J311 Accumulator pressure switch signal White J210 Floating right outrigger Y94 White J307 Lower limit switch White...

  • Page 98: Electrical Schematic Diagram（Sr3369E/Sr4069E

    Service Manual of Rough terrain Mobile Elevating Work Platform 6.3 Electrical schematic diagram（SR3369E/SR4069E）...

  • Page 99: Hydraulic Schematic Diagram

    Service Manual of Rough terrain Mobile Elevating Work Platform 6.4 Hydraulic schematic diagram 6.4.1 SR3369E Hydraulic schematic diagram...

  • Page 100: Sr4069E Hydraulic Schematic Diagram

    Service Manual of Rough terrain Mobile Elevating Work Platform 6.4.2 SR4069E Hydraulic schematic diagram...

  • Page 101: Diagram Of Common Hydraulic Part Symbols

    Service Manual of Rough terrain Mobile Elevating Work Platform 6.5 Diagram of common hydraulic part symbols (1) Hydraulic pump, hydraulic motor and hydraulic cylinder Name Symbol Description Name Symbol Description Hydraulic General Detailed pump symbol symbol Non-adjusta One-way ble one-way One-way rotation, bounce...
  • Page 102 Service Manual of Rough terrain Mobile Elevating Work Platform One-way flow, Fixed one-way displaceme One-way rotation, nt hydraulic action fixed pump-motor displaceme Turbocharg Two-way flow, Variable two-way Pump-moto displaceme rotation, Continuous nt hydraulic variable action pump-motor displaceme nt, external oil drain Unidirection al rotation, Hydraulic...
  • Page 103 Service Manual of Rough terrain Mobile Elevating Work Platform pressure co internal oil ntrol drain External control of air Gas-liquid pressure, * Control Locking pilot hydraulic method for device pressure co internal unlocking ntrol control, external oil drain Hydraulic Electro-hydr external Bounce aulic pilot...
  • Page 104 Service Manual of Rough terrain Mobile Elevating Work Platform Double-acti adjustable Press-pull electromag type netic operation (torque motor, etc.) Rotary motion Handle type electrical control device One-way Feedback General pedal type control symbol The position is detected by Two-way Electrical potentiometer Feedback pedal type...
  • Page 105 Service Manual of Rough terrain Mobile Elevating Work Platform General Direct-actin symbols or Two-way Unloading g, external direct-acting relief valve valve oil drain unloading valve Unloading General valve Pilot symbols or Pressure electromag direct-actin reducing netic p1>p2 g pressure valve unloading reducing valve...
  • Page 106 Service Manual of Rough terrain Mobile Elevating Work Platform valve valve Normally Four-way open servo valve Four-way Two-positio electro-hydr n three-way Level 2 aulic servo solenoid valve valve Two-positio Live n three-way feedback solenoid level 3 ball valve Two-positio n four-way solenoid valve (5) Flow control valve...
  • Page 107 Service Manual of Rough terrain Mobile Elevating Work Platform General Filter Air cleaner symbol Filter with pollution Temperature regulator indicator Filter Magnetic General Cooler filter symbol Cooler Filter with Cooler to bypass the coolant valve pipeline P1: oil inlet General Duplex filter P2: oil Heater...

  • Page 108: Diagram Of Common Electrical Part Symbols

    Service Manual of Rough terrain Mobile Elevating Work Platform Pressure The two pipeline and Cross pipelines are Pipeline return pipeline crossed and pipeline unconnected pipelines Control Flexible intersected Pipeline pipeline Pipeline pipeline connected It can represent Control One-way air an oil pipeline bleeder draining...
  • Page 109 Service Manual of Rough terrain Mobile Elevating Work Platform Controller or Key-operat operating switch ed button Coil operating Thermal device element Thermal relay Normally Normally open closed main contact contact Contactor Normally open Coil auxiliary contact Intermedi Normally Normally closed ate relay open auxiliary contact...
  • Page 110 Service Manual of Rough terrain Mobile Elevating Work Platform Normally closed Normally contact which is open closed with delay contact Normally open Normally contact which is closed disconnected with contact delay Three-pha General symbol of se cage electromagnet asynchron ous motor Three-pha se wound Electromagnetic...

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