LGMG AR14J User manual

LINGONG HEAVY MACHINERY CO., LTD.
△
!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
AR14J/AR16J
Articulated Boom Mobile
Elevating Work Platform

Articulated Boom Mobile Elevating Work Platform
Service Manual
880*1230 mm sixteen format 8 printed sheet
The second edition was first printed in Mar. 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: F12,Building 3 LushangGuoao Plaza, 9777 Jingshi Road,Lixia District, Jinan,
Shandong, 250000,China
Tel: [phone] Technical service: 86-4009666569
Web: www.LGMG.com.cn Sales of accessories:86-0531-67605016

Service Manual of the Articulated Boom
Mobile Elevating Work Platform
I
Contents
Foreword ......................................................................................................VI
Safety Notices .............................................................................................VII
Chapter 1 Safety and Environment........................................................ 1
1.1 Terms and definitions ............................................................................ 3
1.2 Compliance........................................................................................... 3
1.3 Before maintenance.............................................................................. 3
1.4 Workplace requirements ....................................................................... 4
1.5 Safety considerations for maintenance and repair................................. 4
1.6 Intended use......................................................................................... 6
1.7 Instructions............................................................................................ 6
Chapter 2 Product Introduction...................................................................... 7
2.1 Parameters of machine......................................................................... 9
2.1.1 Parameters of AR14J (A0014JNDCH20) articulated lifting platform.....................9
2.1.2 Parameters of AR16J (A0016JNDCH20) articulated lifting platform...................13
2.2 Pressure parameters of filters and valves ........................................... 15
2.3 Tightening torque of joints and plugs................................................... 16
2.4 Tightening torque of nuts and bolts ..................................................... 18
Chapter 3 Maintenance ............................................................................... 21
3.1 Platform assembly............................................................................... 23
3.1.1 Assembling the file box.......................................................................................23
3.1.2 Assembling the foot switch .................................................................................23
3.1.3 Assembling the lifting cross bar ..........................................................................23
3.1.4 Assembling the platform support ........................................................................24
3.1.5 Assembling the load cell.....................................................................................24
3.1.6 Assembling the swing motor mounting bracket...................................................25
3.1.7 Assembling the platform control unit (PCU)........................................................25
3.1.8 Assembling the anti-collision rubber pad ............................................................25
3.1.9 Assembling the platform .....................................................................................26
3.2 Axle assembly..................................................................................... 26
3.2.1 Disassembling the front axle assembly...............................................................26
3.2.2 Assembling the front axle assembly....................................................................27
3.2.3 Disassembling the rear axle assembly ...............................................................30
3.2.4 Assembling the rear axle assembly ....................................................................31
3.2.5 Disassembling the wheel....................................................................................33
3.2.6 Assembling the wheel.........................................................................................33

Service Manual of the Articulated Boom
Mobile Elevating Work Platform
II
3.3 Jib assembly....................................................................................... 33
3.3.1 Disassembling the swing cylinder, the fly jib cylinder and the jib........................33
3.3.2 Assembling the swing cylinder, the fly jib cylinder and the jib.............................35
3.4 Engine assembly................................................................................. 38
3.4.1 Subassembling the engine .................................................................................38
3.4.2 Assembling the engine cooling system...............................................................41
3.4.3 Assembling the engine fuel pipeline ...................................................................42
3.5 Cable carrier assembly ....................................................................... 44
3.5.1 Disassembling the cable carrier..........................................................................44
3.5.2 Assembling the cable carrier...............................................................................46
3.6 Boom/extension jib assembly.............................................................. 48
3.6.1 Disassembling the boom ....................................................................................48
3.6.2 Assembling the boom assembly .........................................................................49
3.6.3 Disassembling the extension jib assembly .........................................................51
3.6.4 Assembling the extension jib assembly ..............................................................52
3.6.5 Assembling the telescopic boom assembly ........................................................54
3.7 Hydraulic tank/fuel tank....................................................................... 55
3.7.1 Assembling the hydraulic tank ............................................................................55
3.7.2 Disassembling the hydraulic tank.......................................................................57
3.7.3 Assembling the fuel tank.....................................................................................58
3.7.4 Disassembling the fuel tank................................................................................58
3.8 Cylinder assembly............................................................................... 59
3.8.1 Disassembling the boom luffing cylinder.............................................................59
3.8.2 Assembling the boom luffing cylinder..................................................................60
3.8.3 Disassembling the boom telescopic cylinder......................................................61
3.8.4 Disassembling the lower leveling cylinder ..........................................................63
3.8.5 Assembling the lower leveling cylinder ...............................................................64
3.8.6 Disassembling the upper leveling cylinder..........................................................64
3.9 Bleeding cylinder................................................................................. 66
3.9.1 Bleeding function pump......................................................................................66
3.9.2 Bleeding slewing motor.......................................................................................66
3.9.3 Bleeding walking motor.......................................................................................66
3.9.4 Bleeding steering cylinder...................................................................................66
3.9.5 Bleeding folding jib luffing cylinder......................................................................67
3.9.6 Bleeding main boom luffing cylinder and lower leveling cylinder ........................67
3.9.7 Bleeding main boom telescopic cylinder.............................................................68
3.9.8 Bleeding fly jib luffing cylinder and upper leveling cylinder.................................68
3.9.9 Bleeding platform swing cylinder ........................................................................68

Service Manual of the Articulated Boom
Mobile Elevating Work Platform
III
3.10 Folding jib assembly.......................................................................... 70
3.10.1 Removing folding jib .........................................................................................71
3.10.2 Assembling folding jib assembly.......................................................................75
3.10.3 Removing folding jib lift cylinder .......................................................................77
3.10.4 Assembling folding jib lift cylinder .....................................................................78
3.11 Rotary table swing assembly............................................................. 79
3.11.1 Removing slewing drive assembly....................................................................79
3.11.2Assembling slewing drive assembly..................................................................80
3.11.3 Lifting rotary table .............................................................................................80
3.12 Other components............................................................................. 80
3.12.1 Assembling battery ...........................................................................................80
3.12.2 Assembling tilt sensor.......................................................................................81
3.12.3 Assembling horn...............................................................................................81
3.12.4 Assembling slewing ring grease filler hose .......................................................82
3.12.5 Assembling ground control system...................................................................82
3.12.6 Assembling hydraulic oil radiator ......................................................................83
3.13 Valve group....................................................................................... 84
3.13.1 Multi-way valve assemblyAR16JEDC-5...........................................................84
3.13.2 Platform swing control valve ST4277-AB00......................................................85
3.13.3 ST5093-AB0C walking control valve group ......................................................86
Chapter 4 Maintenance ............................................................................... 89
4.1 Observing the regulations ................................................................... 91
4.2 Checking the battery........................................................................... 91
4.3 Checking the hydraulic filter................................................................ 92
4.4 Replacing the air filter of the hydraulic tank......................................... 94
4.5 Checking the hydraulic oil level........................................................... 94
4.6 Checking the oil level of the reducer ................................................... 94
4.7 Changing the reducer gear oil............................................................. 95
4.8 Maintenance of worm-type slewing drive............................................. 96
4.9 Maintenance of Deutz engine.............................................................. 97
4.9.1 Checking the engine oil level..............................................................................97
4.9.2 Changing engine oil and replacing oil filter.........................................................98
4.9.3 Checking fuel leaks...........................................................................................100
4.9.4 Bleeding or replacing the fuel filter ...................................................................100
4.9.5 Checking the air cleaner of the engine .............................................................102
4.9.6 Cleaning or replacing the air cleaner................................................................102
4.9.7 Checking the coolant level................................................................................103
4.9.8 Adding or changing engine coolant...................................................................103