LGMG A14JE User manual

Maintenance Manual
A14JE
Mobile Elevating Work Platform
△
!Warning
Before operation and maintenance, the
drivers and service personnel shall
always read and thoroughly understand
all information in this manual. Failure to
do so may result in, fatal accidents or
personal injury.
This manual must be kept with this
machine at all times.
LINGONG GROUP JINAN HEAVY MACHINERY CO., LTD.

Mobile Elevating Work Platform
Maintenance Manual
880*1230 mm 16 format 8 printed sheets
First edition and printed for the first time in December 2021
Lingong Group Jinan Heavy Machinery Co., Ltd.
Add: 12th Floor, Building 3, Lushangguoaocheng, 9777 Jingshi Road, Lixia District, Jinan,
China
Tel: [phone] Fax: [phone]
Technical service: 86-0531-67605017 Web: www.LGMG.com.cn
Accessories sales: 86-0531-67605016

Maintenance Manual of Elevating Work Platform
II
Contents
Chapter 1 Maintenance...............................................................................1
1.1 Compliance....................................................................................... 3
1.2 Inspecting the Drive Hub Oil Level.................................................... 3
1.3 Inspecting the Hydraulic Oil And Filter.............................................. 3
1.4 Checking the battery......................................................................... 4
1.5Regular maintenance......................................................................... 4
1.6 Details of A14JE Maintenance Parts................................................. 6
Chapter 2 Schematic Diagram ....................................................................7

Maintenance Manual of Elevating Work Platform
III
Foreword
Thank you for choosing to use this Mobile Elevating Work Platform from LGMG. This machine is
designed according to AS/NZS1418.10:2011+A1:2017.The information specified in this manual is
intended for the safe and proper operation of this machine for its’ intended purpose.
For maximum performance and utilization of this machine, thoroughly read and understand all the
information in this manual before starting, operating, or performing maintenance on this machine.
Due to continuous product improvements, LGMG reserves the right to make specification changes
without any prior notifications. For any updated information, contact LGMG.
Ensure all preventive maintenance to the machine is performed according to the interval specified in the
maintenance schedule.
Keep this manual with this machine for reference at all times. When the ownership of this machine is
transferred, this manual shall be transferred with this machine. This manual must be replaced
immediately if it is lost, damaged, or becomes illegible.
This manual is copyrighted material. The reproduction or copy of this manual is not allowed without the
written approval of LGMG.
The information, technical specifications and drawings in this manual are the latest available when this
manual is issued. Due to continuous improvement, LGMG reserves the right to change the technical
specifications and machine design without notice. If any specifications and information in the manual are
not consistent with your machine, please contact the service department of LGMG.
△
!WARNING
Only personnel who have been properly trained and qualified to operate or
maintain this machine can operate, repair and maintain this machine.
Improper operation, maintenance, and repair are dangerous and can cause
personal injury and death.
Before any operation or maintenance, the operator shall thoroughly read this
manual. Do not operate, perform any maintenance or make any repairs on this
machine before reading and understanding this manual.
The user shall load the platform strictly according to the load rating of the
platform. Do not overload the platform or make any modifications to the platform
without permission from LGMG .
The operation regulations and preventions in this manual are only applicable for
the specified use of this machine.

Maintenance Manual of Elevating Work Platform
IV
Safety Precautions
The operator of this machine shall understand and follow the existing safety regulations of state and
local governments. If these are unavailable, the safety instructions in this manual shall be followed.
To help prevent accidents, read and understand all warnings and precautions in this manual before
operation or performing maintenance.
It is impossible to foresee every possible hazard and the safety instructions in this manual may not cover
all safety prevention measures. Always ensure the safety of all personnel and protect the machine
against any damage. If unable to confirm the safety of some operations, contact LGMG.
The operation & maintenance prevention measures listed in this manual are only applicable to the
specified uses of this machine. LGMG assumes no responsibility if this machine is used beyond the
range of this manual. The user and the operator shall be responsible for the safety of such operations.
Do not perform any operation forbidden in this manual in any situation.
The following signal words are applicable for identifying the level of safety information in this manual.
△
! Danger:
An imminent situation, that if not avoided, will result in severe injuries or death. This
is also applicable to situations that will cause serious machine damage, if not
avoided.
△
! Warning:
A potentially dangerous situation, that if not avoided, may result in severe injuries or
death. This is also applicable to situations that may cause serious machine damage,
if not avoided.
△
! Notice:
A situation, that if not avoided, may result in minor or intermediate injury. This is also
applicable to situations that may cause machine damage or shorten machine service
life.

Maintenance Manual of Elevating Work Platform
1
Chapter 1 Maintenance

Maintenance Manual of Elevating Work Platform
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1.1 Compliance
1) The operator can only perform routine
maintenance items as specified in this
manual.
2) Regular maintenance inspections should
be performed by qualified authorized
service technicians as required by the
manufacturer
Maintenance symbol legend
The following symbols appear in this manual to
indicate the relevant meaning in the operation
instructions. When one or more symbols appear
in front of the maintenance procedure, the
meanings expressed are as follows.
It indicates that a tool is required to perform this
procedure.
It indicates that a new part is required to perform
this procedure.
It indicates that this procedure should be
performed by the dealer.
1.2 Inspecting the Drive Hub
Oil Level
1) Inspect the oil level of the drive hubs every
250 h or quarterly. Improper oil level will
result in reduced performance. Continuous
use will result in damage to components.
2) Inspect oil level
Figure 1-1 Traveling slowdown
1. Oil filler 2. Viewing port
Drive the machine until one plug is located
at the horizontal position as shown as
shown in Figure 1-1.
Remove the viewing port plug at the
horizontal position, and inspect oil level.
Result: Oil level shall be flush with the
bottom of the viewing port.
If necessary, add oil at the oil filler until the
oil level is flush with the bottom of the
viewing port, select gear oil by referring to
Machine Specifications section.
Coat the plugs with pipe thread sealant and
install the plugs.
Repeat this step for every drive hub.
1.3 Inspecting the Hydraulic
Oil And Filter
1) Inspect hydraulic oil level every 8 h or every
day.
△
!Caution: Perform this step when
the boom is in the retracted position.
Park the vehicle on the flat site. Fully retract
the boom.

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Figure 1-2 Oil Level Sight Gauge
Examine the oil level on the hydraulic oil
tank, i.e., level shall fall within the M range
shown as Figure 1-2, and in the case of
level lower than L, it is necessary to add
hydraulic oil.
2) Inspect hydraulic oil leakage every 8 h or
daily.
△
!Caution: Personal injury danger,
i.e., leaking hydraulic oil can penetrate
or burn skin. Wear goggles and
protective gloves.
Leakage of high-pressure oil may be
invisible to eyes, use cardboard or wooden
boards as a search tool for hydraulic oil
leakage. Hands shall be prohibited from
being used for leakage confirmation.
Inspect oil drops or residual oil on the
following components:
Hydraulic oil tank, filter, pump, hydraulic oil
cylinder, motor, reduction gear, valve block
and hydraulic tubing.
Inspect oil drops or residual oil at the
following areas:
Rear of boom, fly jib, upper side of turntable,
upper and lower sides of chassis, and ground
underneath equipment.
1) Test or replace hydraulic oil every 1,000 h
or annually.
△ !Caution: If the oil isn’t replaced
after the two year interval, it must be
tested quarterly and replaced when it
no longer passes the testing.
Replace hydraulic oil suction filter, oil return filter
every 1000 h or every year. Replace oil suction
filter, oil return filter after first 500 h of use. It is
necessary to replace the hydraulic filter to
maintain performance and service life of the
machine. Dirt or a clogged filter may cause
performance degradation of hydraulic
components, and continuous use will cause
damage to components. In dirty work
environments it is necessary to increase the
change intervals.
1.4 Checking the battery
This check should be performed every 250h or
two month, whichever comes first.
Good battery condition is critical to normal
vehicle performance and safe operation.
Improper electrolyte levels or damaged cables
and wires may result in component damage and
dangerous situations.
△
!Risk of electric shock
Any live operation can cause serious
personal injury or death. Remove all
rings, watches and other accessories
before operation.
△
! Risk of bodily injury
The battery electrolyte is corrosive.
Avoid contact with spilled electrolytes
on your hands or other parts of your
body for fear of injury. The spilled
electrolyte can be neutralized with
soda and water.
△
! Caution: The following checks
should be performed after the battery
is charged.
1) Wear protective clothing and goggles.
2) Make sure the battery cable is securely
wired and not corroded.
3) Make sure the battery lock lever is secure.
4) Remove the battery vent cap.
5) Check the battery electrolyte level. If
necessary, add the distilled water from the
bottom of the battery filler tube. Do not add
excessive distilled water
6) Reset the vent cap.
△
! Caution: Adding terminal
protectors and anti-corrosion sealants
will help eliminate corrosion on battery
terminals and cables.
1.5Regular maintenance

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1) Maintenance work on a quarterly, annual
and biennial basis must be performed by
those who are trained and qualified in the
vehicle maintenance according to the
procedures specified in this manual.
2) If a machine has been idle for more than
three months, a quarterly maintenance
must be performed before it is operated.

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1.6 Details of A14JE Maintenance Parts
Period
Material Code
Material Name
Specification
Unit
Qty
Remarks
100h
/
Lithium grease
/
/
Appropriate
Rotary support,
first 50h
2000h
/
Lithium grease
/
/
Appropriate
Wheel bearing
1000h
4120001128001
Filter element
SPX-06×10
Piece
1
Hydraulic Oil
return filter(If
equipped)
1000h
5301000007
Gear oil GL-5
85W-90 barrel
SAE85W/90GL-5
L
0.68*2
For the first-time
operation of the
reducer,
replenish oil after
150h. Later,
replenish oil
every 250h.
1000h
4120001424
Oil suction filter
WU-63x180-J
WU-63x180-J
Piece
1
4120001427
Air filter EF2-32
EF2-32
Piece
1
1000h
(or
every
year)
5301000175
Hydraulic oil
L-HV32#
L-HV32#
L
30
Hydraulic oil
analysis
Maintenance items of every level are given in the following table
Period
Description
Maintenance measures
Remarks
250h
Battery
Charging with matching
charger
1. No matter whether the battery is loaded or not, if
the battery is not charged for a long time, the
service life of the battery will be shortened.
2. For the battery that has been loaded, in addition
to the above maintenance measures, the power
main switch should be disconnected timely when
the battery is not in use for a long time
Add distilled water
Check whether the battery plate is bare. If the plate
is bare, only add water to the discharged or partially
charged battery. In this case, add water just above
the plate, then charge the battery, then add water to
3mm/0.12in below the exhaust well (plastic cover in
the exhaust hole), and reassemble the vent cap
after adding water.
250h
Harness
Check electrical wiring
1. Check whether there is burned, worn, corroded,
extruded and loosen wiring
2. Check whether all harness joints except
connectors are coated with sufficient insulating
grease.

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Chapter 2 Schematic Diagram

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Electrical schematic diagram

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Hydraulic schematic diagram

11