Sinoboom GTJZ1412/4647 Maintenance Manual
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Sinoboom GTJZ1412/4647 Maintenance Manual

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Part No.501046110002
Rev: A
Aug 2020
Maintenance
Manual
产品说明书
PRODU
C T MAN U AL
GTJZ1412/1412/4647
GTJZ1414/1414/4655
0608E (2132E)
G T JZ
0808E (2732E)
G T JZ
0808E (2732E)
G T JZ
G T JZ
0808E (2732E)

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  • Page 1 Maintenance Part No.501046110002 Rev: A Manual Aug 2020 产品说明书 PRODU C T MAN U AL GTJZ1412/1412/4647 GTJZ1414/1414/4655 0608E (2132E) G T JZ 0808E (2732E) G T JZ 0808E (2732E) G T JZ G T JZ 0808E (2732E)
  • Page 3 Operating, servicing and maintaining this vehicle or equipment can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle or equipment in a well-ventilated area and wear gloves or wash your...
  • Page 4 : No.128, East Jinzhou Avenue, Ningxiang High-tech Industrial Park, Changsha, Hunan, China Zip Code : 410600 Copyright © Hunan Sinoboom Intelligent Equipment CO.,Ltd. All Rights Reserved The final interpretation right of this manual belongs to Hunan Sinoboom Intelligent Equipment CO.,Ltd.
  • Page 5 APPLICATION Use the following table to identify the specific serial number for models included in this manual. Check the model of your machine before consulting the manual, and then use the correct manual according to the serial number of the model. See the nameplate on your machine to identify the model and serial number.(See Operation Manual for details.) Trade identification MODELS...
  • Page 6 This Page Intentionally Left Blank...
  • Page 7 This manual covers the basic parts information of one or more products. Therefore, please use this manual according to your needs. If you find problems in the manual or have suggestions for improve- ment, feel free to share your feedback with Sinoboom, and we will address these issues as soon as possible.
  • Page 8 This Page Intentionally Left Blank...

  • Page 9: Table Of Contents

    TABLE OF CONTENTS Machine Control System ....3-1 Introduction ......iii Safety Measures ..... . 3-1 1 Performance Parameters ..
  • Page 10 A-18 Perform Maintenance After Testing the Function Pump ..5-5 30 Days ......4-14 Removing the Hydraulic Power Unit 5-5 Checklist B Procedures .

  • Page 11: Introduction

    The owner or administrator of the machine shall also provide the manufacturer’s maintenance information to the person responsible for maintaining the machine. If you have any questions, contact Hunan Sinoboom In- telligent Equipment Co., Ltd.. GTJZ1412&1414 Maintenance Manual © Aug 2020...
  • Page 12 This Page Intentionally Left Blank © Aug 2020 GTJZ1412&1414 Maintenance Manual...

  • Page 13: Performance Parameters

    PERFORMANCE PARAMETERS SPECIFICATION Table 1-1 GTJZ1412 Specifications GTJZ1412 (METRIC) 4647 (IMPERIAL) MEASURE DIMENSION PARAMETERS Max. platform height 13.8m 45 ft 3 in Max. working height 15.8m 51 ft 10 in Max. horizontal extension 0.9m 3 ft Length 2.78m 9 ft Width 1.27m 4 ft 2 in...
  • Page 14 PERFORMANCE PARAMETERS GTJZ1412 (METRIC) 4647 (IMPERIAL) MEASURE Turning radius (outside) 2.64m 8 ft 8 in Rated load capacity of a single tire 1140 kg 2513 lb Max. allowable manual force (indoor only) 400N 90 lbf Max. noise 72 dB POWER PARAMETERS Hydraulic tank capacity 3.3 gal(imperial)/3.96 gal(US) Hydraulic system capacity (including tank)
  • Page 15 PERFORMANCE PARAMETERS GTJZ1414 (METRIC) 4655 (IMPERIAL) MEASURE Width 1.41m 4 ft 7 in Height (stowed, rails folded) 1.96m 6 ft 5in Height (stowed, rails up) 2.6m 8 ft 6in Wheel base 2.22m 7 ft 3 in Wheel span 1.26m 4.1 ft Ground clearance (pothole guards 0.1m 4 in...

  • Page 16: Power System Specifications

    PERFORMANCE PARAMETERS GTJZ1414 (METRIC) 4655 (IMPERIAL) MEASURE ENVIRONMENTAL REQUIREMENT Max. allowable wind speed (indoor/ 0m/s(indoor)/12.5m/s(outdoor) 0 mph(indoor)/28 mph(outdoor) outdoor) Max. allowable altitude 1000m 3280.8 ft Allowable ambient temperature (lead-acid -10℃ to 40℃ 14℉ to 104℉ batteries) Allowable ambient temperature (lithium -20℃...

  • Page 17: Specifications

    PERFORMANCE PARAMETERS MEASURE SPECIFICATIONS Lift relief valve pressure 21MPa (3046Psi) Steer relief valve pressure 12MPa (1740Psi) HYDRAULIC RETURN FILTER Bypass pressure 0.17MPa (25Psi) NOTICE Different hydraulic oils can be added according to customer requirements upon factory delivery, but cannot be mixed.

  • Page 18: Hydraulic Hose Torque

    PERFORMANCE PARAMETERS HYDRAULIC HOSE AND FITTING SPECIFICATIONS HYDRAULIC HOSE TORQUE Hydraulic hoses must be torqued to the following specifications. Table 1-4 Hydraulic Hose Torque L (LIGHT-DUTY) S (HEAVY-DUTY) METRIC THREAD 19 ± 1 Nm (14 ± 1 ft-lb) M12 × 1.5 26 ±...
  • Page 19 PERFORMANCE PARAMETERS INSTALLED INTO INSTALLED INTO STEEL ALUMINUM THREAD SIZE ED, O-RING + CIRCLIP ED, O-RING + CIRCLIP O-RING 75 ± 5 Nm (55 ± 4 ft-lb) 75 ± 5 Nm (55 ± 4 ft-lb) 45 ± 3 Nm (33 ± 4 ft-lb) M18×1.5 90 ±...
  • Page 20 PERFORMANCE PARAMETERS INSTALLED INTO INSTALLED INTO STEEL ALUMINUM THREAD SIZE ED, O-RING + CIRCLIP ED, O-RING + CIRCLIP O-RING G1-1/2A 280 ± 20 Nm (207 ± 15 ft-lb) 540 ± 30 Nm (398 ± 22 ft-lb) S (HEAVY-DUTY) G1/4A 40 ± 3 Nm (30 ± 2 ft-lb) 43 ±...

  • Page 21: Hydraulic Hose And Fitting Torque

    PERFORMANCE PARAMETERS 3. Properly seat the O-ring. HYDRAULIC HOSE AND FITTING TORQUE PROCEDURE 4. Position the tube and nut squarely on the fitting. Then tighten the nut as required. The hydraulic hose and fitting must be torqued to the 5. Tighten the nut or fitting to the torque specified in following requirements when they are installed.
  • Page 22 PERFORMANCE PARAMETERS NOMINAL DIAMETER PITCH (MM) CLASS 8.8 CLASS 10.9 CLASS 12.9 (MM) 750 Nm (553 ft-lb) 1050 Nm (774 ft-lb) 1250 Nm (923 ft-lb) 800 Nm (590 ft-lb) 1100 Nm (811 ft-lb) 1300 Nm (959 ft-lb) 1150 Nm (848 ft-lb) 1500 Nm (1106 ft-lb) 1800 Nm (1327 ft-lb) 1500 Nm (1106 ft-lb)

  • Page 23: Safety

    SAFETY Read, understand and comply with the safety rules and NOTICE regulations of your workplace and your government. Indicates a situation that can cause damage to the Before using the machine, obtain proper training on engine, personal property and/or the environment, or safe machine operation and make sure you can safely cause the equipment to operate improperly.

  • Page 24: Tipping Hazards And Rated Load

    SAFETY Extending: Extension only 120 kg(265 lb) GTJZ1414 ELECTRICAL SHOCK HAZARDS Retracting 227 kg(500 lb) • Always maintain a safe distance Extending: Stationary only 107 kg(235 lb) from power lines and electrical equipment in accordance with ap- Extending: Extension only 120 kg(265 lb) plicable government regulations and see...
  • Page 25 SAFETY TIPPING HAZARDS TIPPING HAZARDS • Do not modify or change moving • Personnel, equipment and materi- aerial platforms without the manu- als on the platform must not ex- facturer’s prior written ceed the maximum load capacity. permission. • Only raise or extend the platform •...

  • Page 26: Work Environment Hazards

    SAFETY WORK ENVIRONMENT HAZARDS UNSAFE JOBSITE HAZARDS the platform when the wind speed exceeds 12.5 m/s (18 mph). If the wind speed exceeds 12.5 m/s (18 mph) after the platform is lifted, UNSAFE JOBSITE HAZARDS fold the platform and do not con- tinue to operate the machine.

  • Page 27: Unsafe Operation Hazards

    SAFETY NOTICE UNSAFE OPERATION HAZARDS Maximum climbing ability is suitable for machines with platform retracted. • Do not push any object outside Maximum Slope: 25% (14°) the platform. The maximum lateral force allowed is: Climbing capacity means the maximum allowable tilt angle of the machine when it is on solid ground and the platform is only capable of carrying one person.

  • Page 28: Fall Hazards

    SAFETY UNSAFE OPERATION HAZARDS FALL HAZARDS • Do not tie the platform onto • Each person on the platform must nearby objects. wear harnesses or use safety • Do not put the load outside the equipment consistent with gov- platform. ernment regulations.

  • Page 29: Crush Hazards

    SAFETY COLLISION HAZARDS COLLISION HAZARDS • Never operate a machine danger- • Pay attention to the field of sight ously or for fun. and the presence of blind spots when moving or operating the machine. • Pay attention to the extended plat- CRUSH HAZARDS form when moving the machine.

  • Page 30: Damaged Machine Hazards

    SAFETY DAMAGED MACHINE BATTERY HAZARDS HAZARDS NOTICE FIRE AND EXPLOSION HAZARD To avoid machine damage, follow all operation and • Batteries contain sulfuric acid and maintenance requirements in this manual and the generate explosive mixtures of Maintenance Manual. hydrogen and oxygen gases. Keep any device that may cause sparks or flames (including cigarettes/smoking materials)

  • Page 31: Charging The Battery

    SAFETY HYDRAULIC SYSTEMS NOTICE HAZARD After charging the battery, be sure that: • The battery cable connections are free of corrosion. • The battery hold-down and cable connections are secured. BURN AND HIGH PRESSURE HAZARD Adding terminal protection and anti-corrosion sealants will help reduce corrosion of the battery •...

  • Page 32: After Using The Machine

    SAFETY WELDING HAZARDS • Comply with the welder manufac- turer’s recommendations for pro- cedures concerning proper use of the welder. • Welding leads or cables may only be connected after turning off the power unit. • Carry out welding operations only after the welding cable has been correctly connected.

  • Page 33: System Descriptions

    SYSTEM DESCRIPTIONS the angle of machine on X-axis and Y -axis. When the POWER angle on X-axis exceeds 1.5 degrees or the angle on Y- axis exceeds 3 degrees, the alarm will be triggered, and the function of lift, drive or steer will be limited. Machines are powered by four 12V batteries(two in tandem) or a 24V lithium battery to drive a 24V DC A pothole limit switch confirms if the pothole guards are...
  • Page 34 SYSTEM DESCRIPTIONS This Page Intentionally Left Blank © Aug 2020 GTJZ1412&1414 Maintenance Manual...

  • Page 35: Maintenance

    MAINTENANCE This section provides detailed procedures for regular – Ensure the key switch of the ground controller is maintenance inspections. in the OFF position and remove the key to pre- vent unauthorized use of the machine. – Place the red emergency stop button on the plat- form control box and ground controller in the OFF position to avoid accidental start-up of the UNSAFE OPERATION HAZARD...

  • Page 36: Following Amaintenance Schedule

    MAINTENANCE 2. Use the following table to note the results. After re-inspected after repair is completed and marked each section is complete, mark the appropriate box. in the box marked "inspection". 3. Record the inspection results. If any inspection re- sults are "NO", the machine must be stopped and Table 4-1 PREPARE THE WORK RECORD BEFORE DELIVERY...
  • Page 37 MAINTENANCE Table 4-3 REPAIR & INSPECTION REPORT Model Serial No. Checklist A Procedures REPAIRED/Ma- YES/Machine is NO/Machine Has Problem chine Has Been Items in Good Damage or Description Repaired Condition Malfunction A-1 Inspect All Manuals A-2 Inspect All Decals A-3 Inspect Damaged, Loose or Lost Parts A-4 Inspect Hydraulic Oil Level...
  • Page 38 MAINTENANCE REPAIR & INSPECTION REPORT REPAIRED/Ma- YES/Machine is NO/Machine Has Problem chine Has Been Items in Good Damage or Description Repaired Condition Malfunction B-1 Inspect Electric Wires B-2 Inspect Rim ,Tire and Fasteners B-3 Inspect Battery B-4 Inspect Hydraulic Oil B-5 Inspect Hydraulic Oil Tank Ventilation System B-6 Inspect Brake Manual...

  • Page 39: Checklist Aprocedures

    MAINTENANCE CHECKLIST A A-3 Inspect Damaged, Loose or Lost Parts PROCEDURES Inspecting the condition of the machine daily is important for the safe and reliable operation of the A-1 Inspect All Manuals machine. Never operate a machine with damaged, loose or lost parts. Replace damaged/lost parts and Storing the Operation Manual and the Maintenance tighten loose parts before operating the machine.

  • Page 40: Inspect Hydraulic Oil Level

    MAINTENANCE hazardous situation, poor machine performance and NOTICE damage to hydraulic components if the leak is not repaired. For any damaged, improperly installed or missing parts, correctly install new parts immediately. If the Inspect for overflowing, dripping or residual marks on or fasteners are loose, tighten them immediately.
  • Page 41 MAINTENANCE 1. Put the emergency stop button on the ground into the OFF position by pressing it. Ensure all functions shut down. 2. Pull out the emergency stop button to the ON position. Testing the Lifting and Lowering Functions Figure 4-2 9.
  • Page 42 MAINTENANCE 1. Push the emergency stop button on the ground controller and platform controller to the ON position. 2. Turn the key switch of the ground controller to the platform control position. Testing the Emergency Stop Function 1. Put the emergency stop button on the platform into the OFF position by pressing it.

  • Page 43: Inspect Emergency Lowering

    MAINTENANCE Lifting Forward Back 1. Press the lifting/lowering button. The button 1. Press the driving and steering button. The button should illuminate. should illuminate. 2. Hold the enabling key on the control handle and 2. Hold the enabling key of the control handle and push the control handle forward to activate the push it forward slowly until the machine begins to lifting function.

  • Page 44: Test Braking Device

    MAINTENANCE 3. Test full lifting time. See Table 4-5 , page 4-10. Figure 4-4 Table 4-5 5. The platform shall descend to the lowest position. Models Platform Lift Time A-8 Test Braking Device GTJZ1412 83～92s GTJZ1414 75～85s Braking device must operate smoothly and be in good condition for safe and proper operation of the machine.

  • Page 45: Testing Traveling Speed (Platform Is Fully Retracted State)

    MAINTENANCE 6. Press the walking and steering button, then press the high/low speed button. The slow mode activates when the light of the low-speed traveling button illuminates. 7. Hold the enabling key on the control handle and gently push the control handle forward to the full- drive position.

  • Page 46: Test The Pothole Guard

    MAINTENANCE boards should measure(L × W × H): 50 mm×100 3. Lower the platform. Ensure that the pothole guard mm×116 mm (2 in×4 in×4.6 in). shield automatically recovers. 9. Change the machine’s walking function to a 4. Place a wooden board under the pothole guard and platform lifting function and then push the handle to lift the platform.

  • Page 47: Function

    MAINTENANCE NOTICE When the temperature of hydraulic oil is low, the viscosity will increase, which will have a significant impact on the pressure detection. If the environmental temperature difference between the terminal customer and the machine manufacturer factory delivered by the new machine ≧10°(50°F), or if the hydraulic oil temperature is lower than 15 (59°F), an alarm failure occurs when the rated load is lower than the standard rated load (the "OL"...

  • Page 48: Perform Maintenance After

    MAINTENANCE NOTICE Recharge the battery when the battery charge level is ELECTRICAL SHOCK HAZARD about 20%, it must be charged. Never recharge a completely discharged battery. Be sure to disconnect the battery from the machine and the charger from the AC outlet before inspecting A-18 Perform Maintenance After 30 electrical wires.

  • Page 49: Inspect Battery

    MAINTENANCE Figure 4-5 Table 4-10 Torque Value Name Slotted nut (steering wheel mounting) 420～500Nm（310～369ft-lb） Slotted nut (non-steering wheel mounting) 420～500Nm（310～369ft-lb） Bolt (drive motor installed) 130Nm（96ft-lb） Bolt (brake installed) 130Nm（96ft-lb） 4. Replace the cotter pin and bend it to the locking position.

  • Page 50: Inspect Hydraulic Oil

    MAINTENANCE INSPECT THE MAINTENANCE-FREE BATTERIES • Wear protective clothing and goggles properly. BODILY INJURY HAZARD • Ensure that the connections of the battery cable are Lead-acid batteries and lead-acid not corroded. maintenance-free batteries contain • Ensure that the battery is installed properly and the acid.

  • Page 51: Inspect Brake Manual Release

    MAINTENANCE pump and its normal service life. The hydraulic pump would operate abnormally if the air filter of the hydraulic oil tank is dirty or blocked, and hydraulic components may be damaged after repeated use of a dirty or blocked air filter. Inspect the air filter of the hydraulic oil tank more frequently if the service environment is very dirty.

  • Page 52: Checklist Dprocedures

    MAINTENANCE D-2 Inspect Chassis Slider Properly maintaining the slider is important for safe BURN HAZARD operation of the machine. The chassis slider slides on the channel steel surface to form a friction pair. Use of Allow the hydraulic oil to cool to an improper slider or repeated use of an old slider could room temperature before servicing damage parts and cause unsafe operation.

  • Page 53: Oil

    MAINTENANCE 1. Open the right side door of the chassis and locate the return filter. 2. Place a suitable container under the return filter of ELECTRICAL SHOCK HAZARD the hydraulic tank. Be sure to disconnect the battery from the machine and the charger from the AC outlet before changing the hydraulic oil.
  • Page 54 MAINTENANCE Key Structural Parts Inspection Requirements for Key Structural Components Be sure there is no oil leaking from the cylinder, valve block or hydraulic tubes. Be sure Lift cylinder the components are not deformed, cracked or damaged. There must be no interference between the cylinder and other components.

  • Page 55: Maintenance Procedures

    MAINTENANCE PROCEDURES NOTICE Perform this procedure when the scissor arm has been fully retracted. Maintenance procedures must be performed by qualified, trained and competent personnel in a properly 1. Disconnect the external power supply. Turn the equipped workshop. emergency stop button on the platform controller and ground controller to the OFF position.

  • Page 56: Removing The Extension Platform

    MAINTENANCE PROCEDURES 4. Move the platform away. NOTICE While removing the rubber hose and connector, Removing the Extension Platform be sure to remove and mark the O-rings at the end of the rubber hose or hose. 1. Remove the platform. Refer to Removing the 3.

  • Page 57: Chassis Components

    MAINTENANCE PROCEDURES 1. Connect the scissor arm to the travelling crane. Lift CHASSIS COMPONENTS the scissor arm until the safety arm can be set up. 2. Support the scissor arm with the safety arm. Removing the Drive Motor 3. Disconnect and plug the hoses and fittings on the hydraulic cylinder.

  • Page 58: Removing The Steering Cylinder

    MAINTENANCE PROCEDURES Figure 5-5 NOTICE When installing the removed hose and fitting, it must 1. Disconnect the hydraulic hoses and fittings on the be tightened according to the specified torque. See drive motor. Hydraulic Hose and Fitting Specifications, page 2. Remove the nuts and gaskets connected with the 1-6.

  • Page 59: Removing The Battery

    MAINTENANCE PROCEDURES Removing the Battery NOTICE The pump is not equipped with an unloading NOTICE valve. If the pressure is over 24.8MPa (3596psi), the pump may be damaged. So start the pump Be sure to disconnect the battery charger and main within a very short time interval, and verify the power from the machine before removing the battery.

  • Page 60: Removing The Hydraulic Oil Tank

    MAINTENANCE PROCEDURES 2. Disconnect and plug the rubber hoses and fittings Removing the Hydraulic Valve Block on the pump, and tag the machine. 3. Remove the mounting bolts of the hydraulic pump and carefully remove the hydraulic pump. BURN AND HIGH-PRESSURE HAZARDS Removing the Hydraulic Oil Tank Allow the hydraulic components to...

  • Page 61: Regulating The Platform Lifting

    MAINTENANCE PROCEDURES Figure 5-8 Table 5-1 Description Tightening Torque Function 2-position 2-way solenoid valve High low speed switching 34 Nm (25 ft-lb) Steering overflow valve Steering overflow 24 Nm (17.7 ft-lb) Lifting overflow valve Lifting overflow 27 Nm (20 ft-lb) System overflow 27 Nm (20 ft-lb) Main overflow valve...

  • Page 62: Adjusting The Steering Overflow

    MAINTENANCE PROCEDURES tank until the pump properly operates. Do not allow 13. Remove the pressure gauge. the oil to overflow from the oil tank. Adjusting the Emergency Lowering NOTICE Handle Do not allow the machine to operate if there is pump suction air.

  • Page 63: Hydraulic Symbols

    34.4087 MAINTENANCE PROCEDURES 32.0000 28.5682 46.7096 28.5682 16.0000 28.5682 8. Disengage the safety arm. Symbol Description 46.7096 28.5682 9. Pull the release lever two or three times and ensure 28.5682 46.7096 that it operates properly. 28.5682 Pressure-gradient control 棕 兰 valve 黑...

  • Page 64: Hydraulic Schematic Diagram

    MAINTENANCE PROCEDURES Hydraulic Schematic Diagram Load sensor Lift cylinder, upper Lift cylinder, lower Load sensor M2 Lift control valve assembly, upper Lift control valve assembly, lower Steer cylinder Manul release break valve Platform control valve © Aug 2020 5-10 GTJZ1412&1414 Maintenance Manual...

  • Page 65: Electrical System

    MAINTENANCE PROCEDURES • Voltmeter (for flooded/wet battery, colloid and AGM ELECTRICAL SYSTEM battery) Description Batteries are divided into three types: lithium battery, lead-acid battery and lead-acid maintenance-free battery. The lithium battery and lead-acid maintenance- free battery require some care but no maintenance. BATTERY HAZARDS Always read and comply with the battery manufacturer’s...
  • Page 66 MAINTENANCE PROCEDURES • Always wear protective clothing, gloves and goggles Inspection when handling the battery. • Inspect the battery. The top of the battery and • Do not smoke near the battery, and keep the battery terminal connections must be kept clean and free away from sparks, flames and metal objects.
  • Page 67 MAINTENANCE PROCEDURES • The charge for this equipment is automatic and EQUALIZATION preprogrammed so that the user does not need to Equalization is the deliberate process of overcharging interfere with the charging process. the flooded/wet battery after it has been fully charged. •...
  • Page 68 MAINTENANCE PROCEDURES Open-Circuit Voltage (V) Percentage Charging Specific Gravity （%） Battery Cell 1.098 1.943 5.83 11.66 1.073 1.918 5.75 11.51 • Recharge the battery in quick mode when the Test of Specific Gravity battery level is 70% or lower. 1. Fill and drain the specific gravity hydrometer 2-3 •...

  • Page 69: Use And Care Of Lead-Acid Battery

    MAINTENANCE PROCEDURES terminate the connection between the internal circuit • The battery terminal and related accessories and the battery to avoid charging and damaging the contain lead and lead components. Wash your battery. hands after handling them. • Output short-circuit protection: When there is an accidental output short circuit of the battery charger, Use and Care of Lithium Battery the battery charger will shut down the output...

  • Page 70: Trouble Diagnosis

    MAINTENANCE PROCEDURES • Use a special charger when charging, and avoid • The lithium battery has an automatic protection charging under direct sunlight. Do not charge the function: if the cell voltage is higher than 3.4V, the battery repeatedly after the battery is full. Keep battery system activates for a long period of time children away from the charging charger.
  • Page 71 MAINTENANCE PROCEDURES Code Problem Action Limit Solution Cell Voltage Low Fault 1: Tell BMS factory to check Disable Lifting, and Driving Cell Voltage Low on low speed battery. Fault 1 Cell Voltage Low Fault 2: Tell BMS factory to check Cell Voltage Low Disable Lifting and Driving battery.
  • Page 72 MAINTENANCE PROCEDURES Code Problem Action Limit Solution Forward Coil Fault: Check the connections to the Disable Lifting and Driving Coil’s terminals and make sure they are tight. If so, Forward Coil Fault check the coil itself to see if it is open or shorted. Reverse Coil Fault: Check the connections to the Disable Lifting and Driving Coil’s terminals and make sure they are tight.
  • Page 73 MAINTENANCE PROCEDURES Code Problem Action Limit Solution Motor Controller HPD Fault: Look at motor enable delay with the Scissor Programmer, it may be too Motor Controller HPD Disable All Motion short. Make sure other Motor Controller Fault parameters are properly selected. Total Voltage Low Fault 2: Check battery voltage Total Voltage Low and charge if necessary.
  • Page 74 MAINTENANCE PROCEDURES Code Problem Action Limit Solution Pump Motor Short Fault: Check connections to the Pump Motor Short Disable Lifting and Driving pump motor. Cycle power to the lift and if that does Fault not resolve the issue, replace the Motor Controller. Left Drive Motor Short Fault: Check the Motor Left Drive Motor Short Disable All Motion...

  • Page 75: Fundamental Troubleshooting

    MAINTENANCE PROCEDURES Code Problem Action Limit Solution Machine Tilted Beyond Safe Limits Fault: If the machine is tilted, find a way to make it level. If the Disable Lifting and Driving Machine Tilted machine is level, check the wiring to the tilt sensor and then the sensor itself.
  • Page 76 MAINTENANCE PROCEDURES Problem Cause Solution • Inspect whether the level switch is inserted properly Level status tilting is The level switch has not been and firmly. always sounding alarm connected or has trouble • Inspect whether the level switch is malfunctioning. •...
  • Page 77 MAINTENANCE PROCEDURES Problem Cause Solution • The high-speed hydraulic valve is connected There is no warning incorrectly. after descending to the Pothole protector minimum limiting • The installation of the travel switch is abnormal. position • The hydraulic valve is malfunctioning. •...

  • Page 78: Electrical Symbols

    MAINTENANCE PROCEDURES Electrical Symbols Table 5-7 Symbol Description Symbol Description Warning lamp Solenoid coil 8.5682 兰 棕 棕 兰 Charger Level switch 黑 28.5682 黑 28.5682 46.7096 28.5682 46.7096 28.5682 兰 棕 Two lines connected Two lines non-connected 黑 兰 棕...
  • Page 79 46.7096 46.7096 46.8000 34.4087 34.4087 MAINTENANCE PROCEDURES 32.0000 28.5682 Symbol Description Symbol Description 28.5682 16.0000 Storage battery Lithium battery 46.8000 Fuse GTJZ1412&1414 Maintenance Manual 5-25 © Aug 2020...

  • Page 80: Electrical Schematic Diagram

    MAINTENANCE PROCEDURES Electrical Schematic Diagram Main power Emergency stop Paltform socket Battery and charger Motor controller Key switch Horn Power of controller switch switch F2(10A) F1(200A) Lithium battery Lead-acid battery 87a 87 CANH1 CANL1 CHARGE 07 07 CANH1 CANL1 2C 4A 5A Pump control motor A2 M- Motor controller...
  • Page 81 MAINTENANCE PROCEDURES Down Platform control box Pothole guard Up limit Up/down Buzzer Level sensor Angle sensor Pressure sensor limit deploy detect Power and communication CANH CANH PLATFORM CANL CANL PCBA CANH CANL 12B 12A High/low speed Horn Down Reverse Forward Turn left Turn right Figure 5-15 Electrical Schematic Diagram (continued）...
  • Page 82 MAINTENANCE PROCEDURES This Page Intentionally Left Blank © Aug 2020 5-28 GTJZ1412&1414 Maintenance Manual...

  • Page 83: Appendix 1: Prepare The Work Record Before Delivery

    APPENDIX 1: PREPARE THE WORK RECORD BEFORE DELIVERY PREPARE THE WORK RECORD BEFORE DELIVERY Model Serial No. REPAIRED/Machine YES/Machine is in NO/Machine Has Damage Inspection Item Has Been Repaired Good Condition or Malfunction Pre-operational Inspection Maintenance Procedure Functional Inspection Machine Buyer/ Renter Inspector Signature Inspector Title Inspector Company...
  • Page 84 MAINTENANCE PROCEDURES This Page Intentionally Left Blank © Aug 2020 GTJZ1412&1414 Maintenance Manual...

  • Page 85: Appendix 2: Repair & Inspection Report

    APPENDIX 2: REPAIR & INSPECTION REPORT REPAIR & INSPECTION REPORT Model Serial No. Checklist A Procedures REPAIRED/Ma- YES/Machine is NO/Machine Has Problem chine Has Been Items in Good Damage or Description Repaired Condition Malfunction A-1 Inspect All Manuals A-2 Inspect All Decals A-3 Inspect Damaged, Loose or Lost Parts A-4 Inspect Hydraulic Oil...
  • Page 86 MAINTENANCE PROCEDURES REPAIR & INSPECTION REPORT A-18 Perform Maintenance After 30 Days Checklist B Procedures REPAIRED/Ma- YES/Machine is NO/Machine Has Problem chine Has Been Items in Good Damage or Description Repaired Condition Malfunction B-1 Inspect Electric Wires B-2 Inspect Rim ,Tire and Fasteners B-3 Inspect Battery B-4 Inspect Hydraulic Oil...
  • Page 87 MAINTENANCE PROCEDURES REPAIR & INSPECTION REPORT Inspector Title Inspector Company NOTES: 1. The Repair & Inspection Report shall include the inspection table of each regular inspection. 2. Duplicate the Repair & Inspection Report for each inspection. Store the completed tables for 10 years or until the machine is no longer in use or as required by machine owner/company/custodian.
  • Page 88 Solution s Alw ays For B et t er A ccess Solution s Always for Better Access Solutions AS/N ZS Hunan Sinoboom Intelligent Equipment CO.,Ltd. 长沙市宁乡高新技术产业园区金洲大道东 128 号 No.128, East Jinzhou Avenue, Ningxiang High-tech Industrial Park, Changsha, Hunan, China 市宁乡高新技术产业园区金洲大道东...

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