SDLG LG968 Manual

WA R N I N G
Operators and maintenance persons should read this manual
carefully and understand these instructions before use to
avoid serious accident. For the convenience of relevant
people using this manual, it should be kept properly.
Operation & Maintenance Manual
LG968/969
WHEEL LOADER
SHANDONG LINGONG CONSTRUCTION MACHINERY CO.，LTD

Operation & Maintenance Manual──LG968 /969Wheel Loader
II
LG968/969 WHEEL LOADER
Operation & Maintenance Manual
880×1230 mm 16# 7.5pieces
3rd Edition in 2008. 3 and 1st Print in 2008.4
SHANDONG LINGONG CONSTRUCTION
MACHINERY CO.，LTD
Address: Linyi Economic Development Zone, 276023
Tel: [phone]
Fax: [phone] 8785671
Services Tel：[phone] 4006587999 ([phone]
Services Fax：[phone]
Website：www.sdlg.cn

Operation & Maintenance Manual──LG968 /969Wheel Loader
III
Operation & Maintenance Manual
ConciseGuide
All reasonable steps have been taken to ensure that this publication is correct and
complete, but should any user be in doubt about any detail, clarification may be sought
from Shandong Lingong construction machinery Co. Ltd. or their accredited
representative. The information in this document is subject to change without notice
and should not be construed as commitment by Shandong Lingong construction
machinery Co. Ltd. Shandong Lingong construction machinery Co. Ltd accepts no
responsibility for any errors that may appear in this document.
○
RShandong Lingong construction machinery Co. Ltd, P. R. China
All rights reserved. The contents of this publication may not be reproduced in any form,
or communicated to a third part without prior written permission of Shandong Lingong
construction machinery Co. Ltd.
Shandong Lingong construction machinery Co. Ltd
Linyi Economic Development Zone
Linyi, 276023
Shandong Province
P. R. China
Tel：[phone]
Fax: [phone]
Email: [email protected]
Website: http://www.sdlg.cn

Operation & Maintenance Manual──LG968 /969Wheel Loader
IV
Feedback
At Shandong Lingong Construction Machinery Co. Ltd, we are continually striving to
improve the standards of our manuals and would welcome customer feedback. If you
would like to comment on any aspect of this manual or our products in general, please
send email to:
T[email protected]
Alternatively, send a fax to [phone] or write to
Manual Feedback
Technical Center
Shandong Lingong construction machinery Co. Ltd
Linyi Economic Development Zone
Linyi, 276023
Shandong Province
P. R. China
Please quote the title, part number and date of the manual. It is helpful to be quickly
found in the previous version.

Operation & Maintenance Manual──LG968 /969Wheel Loader
V
Table of Contents
PREFACE...................................................................................................................................错误！未定义书签。
SAFETY INFORMATION........................................................................................................错误！未定义书签。
CHAPTER I SAFETY................................................................................................................................................ 1
1 SAFETY LABELS POSITIONS AND THE CONTENTS.............................................. 错误！未定义书签。
1.1 Safety Label and Its Position................................................................................. 错误！未定义书签。
1.2 The Contents of Safety Label................................................................................ 错误！未定义书签。
2 SAFETY RULES ............................................................................................................. 错误！未定义书签。
2.1 Safety Rules .......................................................................................................... 错误！未定义书签。
2.2 Safety Devices....................................................................................................... 错误！未定义书签。
2.3 Protective Items..................................................................................................... 错误！未定义书签。
2.4 Unauthorized Modification ................................................................................... 错误！未定义书签。
3 SAFETY OPERATION.................................................................................................... 错误！未定义书签。
3.1 Be Familiar with Machine..................................................................................... 错误！未定义书签。
3.2 When Leaving Operator’s Seat ............................................................................. 错误！未定义书签。
3.3 Mounting and Dismounting .................................................................................. 错误！未定义书签。
3.4 Fire Prevention...................................................................................................... 错误！未定义书签。
3.5 Precautions When Operating at High Temperature ............................................... 错误！未定义书签。
3.6 Running on the way .............................................................................................. 错误！未定义书签。
3.7 Prevention for Crushing or Cutting ....................................................................... 错误！未定义书签。
3.8 Notice of Attachment ............................................................................................ 错误！未定义书签。
4 SAFETY STARTING....................................................................................................... 错误！未定义书签。
4.1 Before Starting Engine .......................................................................................... 错误！未定义书签。
5 SAFETY DRIVING......................................................................................................... 错误！未定义书签。
5.1 Warning ................................................................................................................. 错误！未定义书签。
5.2 Oneself Safety and Others’ Safety......................................................................... 错误！未定义书签。
5.3 Full Load Transportation....................................................................................... 错误！未定义书签。
5.4 Never Drive Over-Speed....................................................................................... 错误！未定义书签。
5.5 Ensure Good Visibility .......................................................................................... 错误！未定义书签。
5.6 Pay Attention to Blocks......................................................................................... 错误！未定义书签。
5.7 Drive at Bad Environment..................................................................................... 错误！未定义书签。
5.8 Safety Drive on the Ramp ..................................................................................... 错误！未定义书签。
5.9 Towing................................................................................................................... 错误！未定义书签。
6 SAFETY OPERATION.................................................................................................... 错误！未定义书签。
6.1 Keep Good Operation Habit.................................................................................. 错误！未定义书签。
6.2 Pay attention to Surroundings ............................................................................... 错误！未定义书签。
6.3 Ensure Ventilation in Close Environment ............................................................. 错误！未定义书签。
6.4 Don’t Get Close to Dangerous Environment......................................................... 错误！未定义书签。
6.5 Don’t Get Close to High Voltage Wire.................................................................. 错误！未定义书签。
7 SAFETY PARKING ........................................................................................................ 错误！未定义书签。
7.1 Pay Attention to the Safety of Yourself and Others............................................... 错误！未定义书签。
7.2 Notice for Cold Area ............................................................................................. 错误！未定义书签。
8 SAFETY EXAMINE AND REPAIR ............................................................................... 错误！未定义书签。
8.1 General Knowledge............................................................................................... 错误！未定义书签。
8.2 Working in Close Area .......................................................................................... 错误！未定义书签。
8.3 Maintenance of frames during driving up ............................................................. 错误！未定义书签。

Operation & Maintenance Manual──LG968 /969Wheel Loader
VI
8.4 Working under the Machine .................................................................................. 错误！未定义书签。
8.5 Working on the Machine ....................................................................................... 错误！未定义书签。
8.6 Maintenance during the Engine Working.............................................................. 错误！未定义书签。
8.7 Do not let anything fall into the inner place of machine ....................................... 错误！未定义书签。
8.8 Cleaning ................................................................................................................ 错误！未定义书签。
8.9 Heavy Things ........................................................................................................ 错误！未定义书签。
8.10 Welding Repair.................................................................................................... 错误！未定义书签。
8.11 Examine and Repair of Coolant System.............................................................. 错误！未定义书签。
8.12 Examine and Repair of Hydraulic System .......................................................... 错误！未定义书签。
8.13 Anti-fire............................................................................................................... 错误！未定义书签。
8.14 Air Storage Tank.................................................................................................. 错误！未定义书签。
8.15 Electric System.................................................................................................... 错误！未定义书签。
8.16 Maintenance of Storage Battery.......................................................................... 错误！未定义书签。
8.17 Charging of Storage Battery................................................................................ 错误！未定义书签。
8.18 Starting Using Voltage-Raising Method.............................................................. 错误！未定义书签。
8.19 Maintenance and Storage of Tire......................................................................... 错误！未定义书签。
8.20 Waste Materials ................................................................................................... 错误！未定义书签。
9 SAFETY TRANSPORTATION ....................................................................................... 错误！未定义书签。
9.1 Assemble and Disassemble the Machine............................................................... 错误！未定义书签。
9.2 Transportation on the Ground ............................................................................... 错误！未定义书签。
9.3 Lifting.................................................................................................................... 错误！未定义书签。
CHAPTER II INTRODUCTION .............................................................................................错误！未定义书签。
1 GENERAL VIEW OF THE MACHINE & COMPONENTS’ NAME............................ 错误！未定义书签。
2 GEOMETRICAL DIMENSIONS.................................................................................... 错误！未定义书签。
3 PRODUCT TYPE AND ITS MEANING ........................................................................ 错误！未定义书签。
4 NAMEPLATE.................................................................................................................. 错误！未定义书签。
5 USE CONDITIONS......................................................................................................... 错误！未定义书签。
6 CIRCUMSTANCES REQUIREMENT ........................................................................... 错误！未定义书签。
7 FEATURES......................................................................................................................错误！未定义书签。
8 TECHNICAL PERFORMANCE & PARAMETER ........................................................ 错误！未定义书签。
8.1 Performance .......................................................................................................... 错误！未定义书签。
8.2 Parameters of Dimension and Weight ................................................................... 错误！未定义书签。
8.3 Product Standard and License ............................................................................... 错误！未定义书签。
CHAPTER III OPERATION AND APPLICATION..............................................................错误！未定义书签。
1. BE FAMILIAR WITH MACHINE................................................................................. 错误！未定义书签。
1.1 General Views of Controls and Gauges................................................................. 错误！未定义书签。
1.2 Introduction of Gauges & Controls ....................................................................... 错误！未定义书签。
2 ADJUST OF NEW MACHINE ....................................................................................... 错误！未定义书签。
3 OPERATION AND USAGE OF LOADER..................................................................... 错误！未定义书签。
3.1 Notices for Usage.................................................................................................. 错误！未定义书签。
3.2 Starting .................................................................................................................. 错误！未定义书签。
3.3 Running ................................................................................................................. 错误！未定义书签。
3.4 Stopping ................................................................................................................ 错误！未定义书签。
3.5 Working ................................................................................................................. 错误！未定义书签。
3.6 Oil and Fuel Supplying ......................................................................................... 错误！未定义书签。
3.7 Long-Time Storage................................................................................................ 错误！未定义书签。

Operation & Maintenance Manual──LG968 /969Wheel Loader
VII
3.8 General Problems and Eliminating........................................................................ 错误！未定义书签。
CHAPTER ⅣMAINTENANCE............................................................................................错误！未定义书签。
1. GUIDES OF MAINTENANCE...................................................................................... 错误！未定义书签。
1.1 Precautions before Maintenance and Inspection ................................................... 错误！未定义书签。
1.2 Warning Tag .......................................................................................................... 错误！未定义书签。
1.3 Spare Parts............................................................................................................. 错误！未定义书签。
1.4 Oil and Fuel........................................................................................................... 错误！未定义书签。
1.5 Always Use Clean Oil and Fuel ............................................................................ 错误！未定义书签。
1.6 Keep the Machine Clean ....................................................................................... 错误！未定义书签。
1.7 Be Careful of Refrigerant Water and Oil in High Temperature............................. 错误！未定义书签。
1.8 Check Oil and Filters ............................................................................................ 错误！未定义书签。
1.9 Fuel Strainer .......................................................................................................... 错误！未定义书签。
1.10 Oil Change .......................................................................................................... 错误！未定义书签。
1.11 Welding Instructions............................................................................................ 错误！未定义书签。
1.12 Fire Prevention .................................................................................................... 错误！未定义书签。
1.13 Sealing Part ......................................................................................................... 错误！未定义书签。
1.14 Checking Frame .................................................................................................. 错误！未定义书签。
1.15 Precautions When Washing Machine .................................................................. 错误！未定义书签。
1.16 Checking in Raining and Snowing Circumstances ............................................. 错误！未定义书签。
1.17 Dusty Worksite.................................................................................................... 错误！未定义书签。
1.18 Avoid Using Mixed Oil ....................................................................................... 错误！未定义书签。
2. CONTENT OF MAINTENANCE.................................................................................. 错误！未定义书签。
2.1 Outline of Oil, Fuel and Coolant ........................................................................... 错误！未定义书签。
2.2 Selection of Fuel, Coolant and Lubricant.............................................................. 错误！未定义书签。
2.3 The Sketch of Lubricating Points .......................................................................... 错误！未定义书签。
2.4 Outline of Electric System Maintenance............................................................... 错误！未定义书签。
2.5 Maintenance Tools ................................................................................................ 错误！未定义书签。
2.6 Tightening Torque of Threads ............................................................................... 错误！未定义书签。
3 RULES OF MAINTENANCE......................................................................................... 错误！未定义书签。
3.1 Every 10 Hours (Days) Service............................................................................. 错误！未定义书签。
3.2 Every 50 Hours (Week) Service............................................................................ 错误！未定义书签。
3.3 Every 250 Hours (Month) Service ........................................................................ 错误！未定义书签。
3.4 Every 500 Hours (Season) Service........................................................................ 错误！未定义书签。
3.5 Every 1000 Hours (Half an Year) Service............................................................. 错误！未定义书签。
3.6 Every 2000 Hours (Year) Service.......................................................................... 错误！未定义书签。
3.7 Alteration............................................................................................................... 错误！未定义书签。
3.8 Always replace air-storage tank when carrying out 3 years service...................... 错误！未定义书签。
CHAPTER V THE STRUCTURE AND PRICIPLE OF MAIN COMPONENTS AND SYSTEM错误！未定义
书签。
1 Transmission System........................................................................................................ 错误！未定义书签。
2 Hydraulic System............................................................................................................. 错误！未定义书签。
3 Brake System ................................................................................................................... 错误！未定义书签。
3.1 Driving Brake System ........................................................................................... 错误！未定义书签。
3.3 Emergency and Parking Brake System ................................................................. 错误！未定义书签。
4 Electric System ................................................................................................................ 错误！未定义书签。

Operation & Maintenance Manual──LG968 /969Wheel Loader
VIII
PREFACE
Thank you for purchasing the LG968/969 wheel loader.
This manual is a guideline for users to use and maintain this machine properly. Keep this manual in
cab and have all relevant people read it at any moment. If this manual has been lost or has become
damaged and cannot be read, contact with our company or our dealers.
If you sell the machine, be sure to give this manual to the new owners.
Parameters, figures and information included in the manual are only apply to basic loaders. For those
derivative products, please consult us or relative reference manuals.
When select working equipments please follow the working equipment user manual to assemble and
disassemble, replace and use.
In addition, please read carefully the attached technical user manual of diesel engine and other
function parts about the operation, usage and maintenance.
We are continually striving to improve the quality of our products, to produce more advanced and
safer engineering machine. We reserve the right, at its sole discretion, to change, modify our design,
but we do not promise to imply the changes to products that are sold. We also reserve the right to
change the data and machine, and the right to maintain. The changes of design, operation and user
manual of maintenance information in this document is subject to change without notice. Welcome
customer feedback. If you would like to comment on any aspect of this manual or our products in
general, please do not hesitate to contact us.
Please feed back the shortcomings during using our products in time, so that we can continue to
improve our products to satisfy your requirement.
All rights reserved. The contents of this publication may not be reproduced in any form, or
communicated to a third part without prior written permission of Shandong Lingong construction
machinery Co. Ltd.

Operation & Maintenance Manual──LG968 /969Wheel Loader
IX
△
!WA R N I N G
zThe wrong operation, maintenance and repair could results in hurt and death.
zOperator should read this manual carefully before operation or maintenance. Never
involve in operation and maintenance and repair of the machine before reading and
understanding this manual.
zThe operation specifications and precautions given in the manual only apply to intended
uses of the machine. If the machine is used for any unintended conditions that are not
specifically prohibited, be sure that operation will not induce hurts to you and other
persons.
zNo operation and action is allowed that is conflict with the description in the manual.

Operation & Maintenance Manual──LG968 /969Wheel Loader
X
SAFETY INFORMATION
The operator should know and obey the safety criterion described in national and local laws. If there
is no such criterion, please follow the rules described in this manual.
Most accidents are caused by the failure to follow fundamental safety regulations for the operation
and maintenance of machines. To avoid accidents, please read, understand and follow all precautions
and warning in this manual and on the machine before performing operation and maintenance.
Safety precautions are specified in SAFETY of Chapter I.
Because of potential danger that is impossible to be predicted. Safety information described in this
manual cannot include all of the safety precautions, and we also cannot predict every circumstance
that might involve a potential hazard in operation and maintenance. Therefore, if procedures or
actions which are not recommended in this manual are used, you must be sure safety of the operator
and machine. Otherwise, consult us or the dealers.
The safety precautions for operation and maintenance in this manual only apply to those conditions
specified by the machine. If the uses of the machine are not specified in the manual, users should take
full responsibility by themselves. We will not bear any safe responsibility for the operators or
machine.
In any case, you should not engage in prohibited operations as described in this manual.
The following signs are used for identifications of safety information in this manual:
△! DANGER── This word is used on safety messages and safety labels where there is a
high possibility of serious injury or death if the hazard is not avoided. These safety messages or
labels usually describe precautions that must be taken to avoid the hazard. Failure to avoid this
hazard may also result in serious damage to the machine.
△! WA R N I N G ── This word is used on safety messages and safety labels where there is a
potentially dangerous situation. Failure to avoid this hazard may also result in serious injury or
death. Failure to avoid this hazard may also result in serious damage to the machine.
△! NOTICE── This word is used on safety messages and safety labels for the hazards that
could result in minor or moderate injury if the hazard is not avoided. This word is used for
precautions that must be taken in order to avoid actions which could shorten the life of the
machine.

Operation & Maintenance Manual──LG968 /969Wheel Loader
1
CHAPTER I SAFETY
△
!WARNING
Read and follow all safety precautions. Failure to do may
result in serious injury or death.
1 SAFETY LABELS POSITIONS AND THE CONTENTS
1.1 Safety Label and Its Position
The positions of safety label of this machine please see the following figure, Please read the contents
of safety label carefully and follow the rules. Please keep the labels well, if there is any lost, broken or
unclarity of label please add new one or repair in time. If there is any component attached with safety
labels to be replaced, please make sure the new component has the same safety label.
When clean the safety label, please use cloth, soap water and etc, but the cleanser and gas is forbidden
to be used.

Operation & Maintenance Manual──LG968 /969Wheel Loader
2
1.2 The Contents of Safety Label
1 Warning for start
Located above the start button
2 Notice for operation 3 Notice for driving
4Startforlift
Located on the front of
the front and rear frames
(Lock the lift arm cylinder before
entering dangerous areas.)
5 Limit position of lift arm 6 Dan
g
er of actuatin
g
arm
Located on the two sides
of actuating arm
Located on the two sides
of actuating arm
Located on the right side of the
window of operator cab
Located on the right side of the
window of operator cab

Operation & Maintenance Manual──LG968 /969Wheel Loader
3
Located on the pole at
right side of operator
cab
Located on right and left operator cab door
10 Notice for the door of o
p
erator cab
Located on the steering
position of front and rear
frames
7 Dan
g
er or death
during Steering
8 Reference for manual
Located on the left operator cab
door and mouse of radiator of
engine hood
9 Antifreeze fluid （if
sticked）
12 Parkin
g
Brake Handle11 Notice for
p
latform frame
Located on right operation box
Located on right and left platform
frame

Operation & Maintenance Manual──LG968 /969Wheel Loader
4
Located on the hydraulic oil tank
13 H
y
draulic oil tan
k
14 Warnin
g
of hi
g
h tem
p
erature
Located on vent-pipe of engine
hood
15 Forbidden of flame and fire
Located on fuel tank
16 Fuel tan
k
Located on fuel tank
Be attention for steam or hot
water ejection
Located on the two sides of en
g
ine hoo
d
17 Notice of hot water 18 Warning of touching machine
Located on cover of water
tank of engine hood

Operation & Maintenance Manual──LG968 /969Wheel Loader
5
19 Warning of machine reversing
Located on the two sides of engine hood
20 Warning of high voltage
Located on the right back pole inner operator cab
21 Warning of
seatbelt
Located on the right
b
ack pole inner the
o
p
erator cab
22 Warnin
g
of
avoidin
g
noise
Located on the right
b
ack pole inner the
o
p
erator cab
23 Warning of
driver onl
y
Located on the right
b
ack pole inner the
o
p
erator cab

Operation & Maintenance Manual──LG968 /969Wheel Loader
6
24 Check before
startin
g
Located on the right
b
ack pole inner the
o
p
erator cab
25 ROPS&FOPS (used
in anti-roll cab
)
Located on the left
b
ack pole inner the
o
p
erator cab
26 Prevent rolling
Located on the left
front pole inner the
o
p
erator cab

Operation & Maintenance Manual──LG968 /969Wheel Loader
7
2 SAFETY RULES
2.1 Safety Rules
zOnly trained and authorized people can be
permitted to operate and maintain the machine.
zFollow all safety rules, precautions and instructions
when operating and maintaining the machine.
zAdjust yourself, never operate machine when you
feel bad. Don’t operate machine if you feel bad, or
feel sleepy after eating drugs or drinking. Those
cases could cause your wrong judgments and induce
accident.
zWhen working with another operator or with a
person on worksite traffic duty, be sure that all
people understand all hand signals that are to be
used.
zFollow all the safety rules.
2.2 Safety Devices
zBe sure all guards and covers are in their proper position, and repair them when damaged.
zUse safety devices properly such as parking brake switch, safety belt and etc.
zNever remove any safety devices. Always keep them in good operating conditions.
zImproper use of safety devices could result in serious bodily injury or death.

Operation & Maintenance Manual──LG968 /969Wheel Loader
8
2.3 Protective Items
zWear protective items, such as hard helmet, safety
glasses, shoes, mask reflector waistcoat or veil,
earplug, heavy gloves when operating or maintaining
the machine.
zMake sure to ware hard helmet, safety glasses and
heavy gloves, if the operation involves scattering
metal chips or other minute particle particularly
when driving pins with a hammer or cleaning the
filter elements of air cleaner with compressed air, be
sure that there is no one near the machine. Check
properly all protective equipments before using.
zNever wear loose clothing, jewelry and loose long
hair. They can be caught on control levers (or control
handle) or in moving parts and cause serious injury
or death..
zAvoid wearing oily clothes, because they are
flammable.
zCompressed air may hurt the body. When use
compressed air, be sure to ware mask, safety cloth
and shoes. The max pressure of cleaning compressed
air should be lower than 0.3MPa.
zAll the protective items should be examined before
usage to make sure their function well.
2.4 Unauthorized Modification
zAny modification without authorization from us can create problems with danger.
zPlease consult Shandong Lingong construction machinery Co. Ltd or the sellers before
modification, otherwise.
zwe will not be responsible for any injury or damage caused by any the unauthorized modification.

Operation & Maintenance Manual──LG968 /969Wheel Loader
9
3 SAFETY OPERATION
3.1 Be Familiar with Machine
zLearn the study manual supplied together with the machine. Learn the structure of the machine,
operation and maintenance. Be familiar with the buttons, operation handles, meters, warning
devices and their positions and functions.
zKnow all the rules in operation; understand the
gesture of the director.
zIf there is any oil near the operation positions that
can cause loosen, clean it immediately.
zCheck all the safety items, such as the safety
protective devices are at the safe status. Make sure
the tires are not worn and the tire pressure is up to
snuff. If you don’t solve the oil leak, water leak, air
leak, deformation, loosen, and abnormal sound, there
may be dangerous accidents. Check the safety
devices timely.
3.2 When Leaving Operator’s Seat
zAlways keep the parking brake switch in lock position unfailingly.
zLevel the working equipment completely to the ground and puts the Gear Control Lever and
Working Equipment Control Handle to Neutral
position, Stop the engine and turn off the electric
lock.
zMake sure the loader is locked and keep the key
carefully.

Operation & Maintenance Manual──LG968 /969Wheel Loader
10
3.3 Mounting and Dismounting
zCheck the handrails and pedals, if there is oil, lubricant or dirt; clean them first to prevent slip.
Besides, repair the broken items, fasten the loosen nuts.
zNever jump on or off the machine. Never get on or
off a moving machine.
zWhen getting on or off the machine, face the machine and use the
handrails and pedals to ensure that you support yourself. Maintain
three-point contact (two hands –one foot or two feet one hand) with
the handrails and pedals to ensure body stable.
zNever hold any control levers when getting on or off the machine.
zNever get into the operator cab from the ladder at the back of machine or from the tire at the side
of operator cab.
zNever hold any tools or other items when climbing up and down the loader, lift the tools needed
using rope to the operation flat roof.
3.4 Fire Prevention
The fuel used for engine, lubricant for loader engine, hydraulic oil for hydraulic system, Hydraulic
pressure shafting oil and gear oil for transmission system,
brake fluid, antifreeze fluid for heat elimination system
are flammable, so it is very dangerous when the fire is
close, especially for the fuel. The following notice should
be paid attention to.
zKeep fire away from flammable fluids.