LGMG A45JE User manual

△! 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.
Service Manual
A14JE
Articulated Boom Mobile
Elevating Work Platform
LINGONG HEAVY MACHINERY CO.，LTD.

Articulated Boom Mobile Elevating Work Platform
Service Manual
880*1230 mm Sextodecimo 8 sheets
First edition, Oct. 2022 First print, Oct. 2022
L I N G O N G H E AV Y M A C H I N E R Y C O . , LT D .
Add.: 12F, Building 3, Lushang Olympic City, No. 9777, Jingshi Road, Lixia District, Jinan
City, Shandong Province, China
Tel: [phone] Technical service: 86-4009666569
Web: www.LGMG.com.cn Sales of accessories: 86-0531-67605016

Service manual of Articulated Boom Mobile Elevating Work Platform
I
Contents
Foreword....................................................................................................................................................V
Safety Notices...........................................................................................................................................VI
Safety and Environment............................................................................................................ 1
1.1 Terms and definitions.................................................................................................................... 3
1.2 Before maintenance...................................................................................................................... 3
1.3 Workplace requirements............................................................................................................... 3
1.4 Maintenance and repair safety specification................................................................................ 4
1.5 Intended purpose.......................................................................................................................... 5
1.6 Compliance................................................................................................................................... 5
1.7 Description.................................................................................................................................... 5
Product introduction.................................................................................................................. 7
2.1 A45JE（A1408JDTAE30）Machine parameters ......................................................................... 9
2.2 Lift platform torque specification................................................................................................. 10
2.3 Key component moment table.................................................................................................... 13
Service................................................................................................................................... 15
3.1 Platform assembly...................................................................................................................... 17
Assembling the file box..................................................................................................... 17
Assembling the platform tool box..................................................................................... 17
Assembling the foot switch............................................................................................... 17
Assembling the lifting cross bar........................................................................................ 17
Assembling the protective mount..................................................................................... 17
Assembling the arc shield................................................................................................. 18
Assembling the platform assembly................................................................................... 18
Assembling the load cell................................................................................................... 19
Assembling the stop block................................................................................................ 19
Assembling the swing motor mounting bracket.............................................................. 19
Assembling the platform control unit (PCU)................................................................... 19
Assembling the anti-collision rubber pad ....................................................................... 20
Assembling the platform................................................................................................. 20
3.2 Axle assembly............................................................................................................................. 20
Removing the front axle assembly................................................................................... 20
Removing the rear axle assembly.................................................................................... 21
Removing the wheels....................................................................................................... 21
Assembling the wheels..................................................................................................... 21
Removing the motor......................................................................................................... 22
Removing the reducer assembly...................................................................................... 22
3.3 Jib assembly............................................................................................................................... 22
Removing the swing cylinder............................................................................................ 22

Service manual of Articulated Boom Mobile Elevating Work Platform
II
Removing the jib assembly............................................................................................... 23
Removing the fly jib cylinder............................................................................................. 23
Assembling the swing cylinder, the fly jib cylinder and the jib ......................................... 24
3.4 Cable carrier assembly............................................................................................................... 27
Removing the cable carrier............................................................................................... 27
Assembling the cable carrier............................................................................................ 28
3.5 Boom assembly .......................................................................................................................... 29
Removing the boom assembly......................................................................................... 29
Assembling the boom assembly....................................................................................... 30
Subassembling the boom assembly................................................................................. 31
3.6 Hydraulic tank............................................................................................................................. 33
Assembling the hydraulic tank.......................................................................................... 33
3.6.1 Removing the hydraulic tank............................................................................................ 34
3.7 Cylinder assembly....................................................................................................................... 35
Removing the boom luffing cylinder................................................................................. 35
Assembling the boom luffing cylinder............................................................................... 36
Removing the boom telescopic cylinder........................................................................... 37
Removing the lower leveling cylinder............................................................................... 38
Assembling the lower leveling cylinder............................................................................. 39
Removing the leveling cylinder......................................................................................... 39
3.8 Articulated boom assembly......................................................................................................... 41
Removing the articulated boom assembly....................................................................... 42
Assembling the articulated boom assembly..................................................................... 44
Removing the articulated boom lift cylinder ..................................................................... 45
Assembling the articulated boom lift cylinder................................................................... 46
3.9 Rotary table swing assembly...................................................................................................... 47
Removing the slewing drive assembly............................................................................. 47
Assembling the slewing drive assembly........................................................................... 48
Lowering the rotary table.................................................................................................. 48
3.10 Other components.................................................................................................................... 48
Assembling the battery................................................................................................... 48
Assembling the horn....................................................................................................... 49
Assembling the ground control unit (GCU) assembly.................................................... 49
3.11 Valve group ............................................................................................................................... 50
Installing the spool.......................................................................................................... 50
Boom function valve block.............................................................................................. 50
3.12 Bleeding cylinder....................................................................................................................... 52
Bleeding function pump.................................................................................................. 52
Bleeding slewing motor .................................................................................................. 52
Bleeding driving motor.................................................................................................... 52

Service manual of Articulated Boom Mobile Elevating Work Platform
III
Bleeding steering cylinder .............................................................................................. 52
Bleeding folding jib luffing cylinder................................................................................. 52
Bleeding main boom luffing cylinder and lower leveling cylinder................................... 53
Bleeding main boom telescopic cylinder........................................................................ 53
Bleeding fly jib luffing cylinder and upper leveling cylinder............................................ 53
Bleeding platform swing cylinder.................................................................................... 53
Maintenance.......................................................................................................................... 55
4.1 Compliance and Obedience....................................................................................................... 57
4.2 Checking the Safety Manual....................................................................................................... 57
4.3 Check the Labels and Signs....................................................................................................... 57
4.4 Check for Damaged, Loose or Missing Parts............................................................................. 57
4.5 Check the Hydraulic Oil Level and Leakage .............................................................................. 58
4.6 Check the Pivoting Support........................................................................................................ 58
4.7 Checking the Battery .................................................................................................................. 59
4.8 Check the Wires.......................................................................................................................... 60
4.9 Check the Electrical Contactors ................................................................................................. 60
4.10 Check the Tires and Wheels..................................................................................................... 61
4.11 Check the Drive Hub Oil Level.................................................................................................. 61
4.12 Check for Exhaust Cover of Hydraulic Oil Tank ....................................................................... 61
4.13 Visual Inspection of the Hydraulic Oil....................................................................................... 62
4.14 Platform weighing structure lubrication .................................................................................... 62
4.15 Checking the hydraulic filter ..................................................................................................... 62
4.16 Replace the Reducer Gear Oil ................................................................................................. 63
4.17 Replace theAir Cleaner............................................................................................................ 63
4.18 Replace the Hydraulic Oil and Filter......................................................................................... 63
4.19 Regular maintenance................................................................................................................ 64
4.20 Fault code of Li-battery............................................................................................................. 65
4.21 Routine Inspection and Maintenance Intervals........................................................................ 68
Commissioning....................................................................................................................... 71
5.1 Safety instructions....................................................................................................................... 73
5.2 Machine inspection..................................................................................................................... 74
5.3 Basic test..................................................................................................................................... 75
Start test............................................................................................................................ 75
Emergency stop switch..................................................................................................... 75
Horn switch....................................................................................................................... 75
Basic operation test of ground control unit....................................................................... 75
Basic operation test of platform control unit..................................................................... 77
Hydraulic oil level test....................................................................................................... 79
Travel speed (high speed) test......................................................................................... 80
Braking distance test ........................................................................................................ 80

Service manual of Articulated Boom Mobile Elevating Work Platform
IV
Drive speed limit test........................................................................................................ 80
Braking distance test (at slow speed)............................................................................. 81
Drive enable system test................................................................................................ 81
Gradeability test（30%）............................................................................................... 81
Operation time test......................................................................................................... 82
Lifting height test............................................................................................................. 83
Load test (1.1 times)....................................................................................................... 83
Load test (1.25 times)..................................................................................................... 83
Rated load calibration..................................................................................................... 83
Boom pressure test......................................................................................................... 84
Articulated boom pressure test....................................................................................... 84
Slewing pressure test ..................................................................................................... 85
Steering pressure test .................................................................................................... 85
Appendix................................................................................................................................ 87
6.1 System fault code ....................................................................................................................... 89
6.2 Diagram of common hydraulic part symbols.............................................................................. 90
6.3 Diagram of common electrical part symbols ............................................................................ 100
6.4 Wire harness number description............................................................................................. 105
Main harness..................................................................................................................105
Platform wire................................................................................................................... 106
6.5 Schematic diagram................................................................................................................... 108
Electrical schematic diagram..........................................................................................108
Hydraulic schematic diagram .........................................................................................109

Service manual of Articulated Boom Mobile Elevating Work Platform
V
Foreword
You are welcome to purchase and use the products produced byLingong HeavyMachinery Co., Ltd. This
manual introduces the technical parameters and maintenance adjustment data of Articulated Boom
elevating work platform, and explains the troubleshooting and maintenance process for reference by
qualified professional maintenance professionals. The information contained in this manual are correct
at the time of publication, but due to the continuous improvement of the structure and performance of our
products, the design as well as operation and maintenance instructions of the product may be subject to
change without notice. Forthe latest information about the machine and any questions about thismanual,
please consult our company. In additions, readers of this manual are encouraged to feedback the errors
and put forward suggestions to Lingong Heavy Machinery Co., Ltd., which will be carefully considered in
the future publication and printing of this manual.
This manual is the property of Lingong Heavy Machinery Co., Ltd., and is not allowed to be duplicated or
reprinted without our written permission.
△
!WARNING
Only the personnel who have professionally trained and qualified are allowed to
operate and maintain the machine.
Incorrect operation, maintenance and repair are dangerous and can lead to
personal injury or death.
Before operating or maintaining the machine, the operator should read this manual
carefully. Do not operate, maintain or repair the platform without reading and
understanding this manual.
Please load the machine in strict accordance with the rating, otherwise all the
consequences arising from overloading or unauthorized modification will be borne
by the user.
The operation instructions and precautions in this manual apply onlyto the intended
use of the machine. If the machine is used for an operation that is out of the
specification herein but not prohibited, always make sure that this operation will not
cause personal injury to yourself or others.

Service manual of Articulated Boom Mobile Elevating Work Platform
VI
Safety Notices
The operator shall understand and abide by the current national and local safety regulations. If such
regulations are not available, the safety instructions in this manual shall prevail.
Most of the accidents are caused by failure to comply with the regulations on the operation and
maintenance of the machine. In order to avoid accidents, please read, understand and observe all
warning requirements and precautions in this manual and on the machine before operation and
maintenance. Failure to comply with the instructions and safety rules in this manual and the
corresponding manual on the machine may result in serious injury or even death.
Considering the fact that not all possible hazards are foreseeable, it is impossible for safety notices
in this manual and on the machine to cover all safety precautions. If it is necessary to take steps and
operations not recommended herein, always protect the safety of yourself and others, and keep the
machine from any damage. If the safety of some operations remains uncertain, please consult us or
dealers.
Not only basic mechanical, hydraulic and electrical skills are required to perform most operations.
Specialized skills, tools, lifting equipment and suitable workshops are also required for
some maintenance processes. Considering this, it is strongly recommended for you to get the machine
maintained and repaired in the service center authorized by LINGONG HEAVY MACHINERY CO.，LTD.
The operation and maintenance precautions referred to herein apply only to the intended use of this
machine. If the machine is to be used forother purposes than those listed herein, it is the user oroperator
instead of us that shall take the safety liabilities therefrom. In no case shall any operations expressively
prohibited herein be performed.
For the purpose of this manual, the following signal words are applied to identify safety instructions:
△
!DANGER - Indicating any existing dangers that, if not avoided, will cause serious
injury or even death. This term is also used for the danger that, if not avoided, may
cause serious damage to the machine.
△
!WARNING - Indicating any potential dangers that, if not avoided, may cause
serious injury or even death. This term is also used for the danger that, if not avoided,
may cause serious damage to the machine.
△
!CAUTION - Indicating situations that, if not avoided, may cause minor or
moderate injury. This term is also used for the danger that, if not avoided, may cause
damage to the machine or shorten the life of the machine.

Service manual of Articulated Boom Mobile Elevating Work Platform
1
Safety and Environment

Service manual of Articulated Boom Mobile Elevating Work Platform
2