Carter CT12 Manual

CT12 MINI CRAWLER EXCAVATOR
OPERATION & MAINTENANCE MANUAL
Original Instruction
Shandong Carter Heavy Industry Machinery Co., Ltd.
Add: Economic Technology Development Park, Linshu, Shandong, P.R.China
Tel: [phone]

1
CONTENTS
FOREWORD...................................................................................................................................................... 1
BEFORE SERVICING THIS MACHINE..........................................................................................................2
UK DECLARATION OF CONFORMITY........................................................................................................3
Body and engine identification marks.................................................................................................................5
1 Safety...............................................................................................................................................................6
1.1 Safety information.................................................................................................................................6
1.1.1 Recognize safety label................................................................................................................6
1.1.2 Understand signal words ............................................................................................................6
1.1.3 Compliance with safety regulations...........................................................................................7
1.2 Safety operation of the machine.........................................................................................................17
1.2.1. Before starting the engine....................................................................................................... 17
1.2.2 After starting the engine...........................................................................................................19
1.3 The position of the safety labels........................................................................................................29
2 Usage Features and Performance Parameters of Carter 1.2T Excavators.....................................................36
2.1 Usage and features............................................................................................................................. 36
2.2 Main performance parameters...........................................................................................................38
2.3 Tailless excavator Main performance parameters............................................. 错误！未定义书签。
3.1 Overview on Carter 1.2T excavators................................................................................................. 41
3.2 Work principle of excavators.............................................................................................................42
3.3 Basic structure of Carter 1.2T excavators mechanical system...........................................................43
3.3.1 Power system........................................................................................................................... 43
3.3.2 Drive system.............................................................................................................................43
3.3.3 Swing mechanism.................................................................................................................... 43
3.3.4 Traveling mechanism...............................................................................................................43
3.4 Hydraulic system structure of Carter 1.2T excavators........................................................................46
3.5 Hydraulic schematic diagram.............................................................................................................49
3.5.1 Main valve function diagram ................................................................................................. 49
3.5.2 Main valve function diagram .................................................................错误！未定义书签。
3.5.3 Main valve function diagram ................................................................................................. 49
3.6 Electrical system diagram.................................................................................................................. 51
4 Service Technologies of Carter 1.2T Excavators..........................................................................................52
4.1 Basic construction knowledge............................................................................................................52
4.2 Preparation for work.......................................................................................................................... 52
4.3 Operational essentials.........................................................................................................................54
4.4 Operational Precautions..................................................................................................................... 56
4.4.1 Safety Button operation （Mechanical control type）..........................................................56
4.4.2 Safety Button operation （Pilot oil control system model）................ 错误！未定义书签。
4.4.3 Prohibitions and precautions for hydraulic excavators............................................................ 59
5 Maintenance of Carter 1.2T Excavators........................................................................................................60
5.1 Safty precautions for servicing, disassembly and reassembly........................................................... 60
5.1.1 Safty measures before starting work........................................................................................60
5.1.2 Safty measures during work....................................................................................................60
5.1.3 Preparation for disassembly..................................................................................................... 61
5.2 Daily inspection and maintenance..................................................................................................... 62
5.3 Periods of overhaul, medium and minor repair..................................................................................62
5.4 Technical maintenance........................................................................................................................64
5.4.1、Grease..................................................................................................................................64
5.4.2 Slewing bearing - every 100h................................................................................................. 65
5.4.3 Engine oil............................................................................................................................... 66
5.4.4、Hydraulic system...................................................................................................................68
5.4.5 Fuel system..............................................................................................................................71
5.5 Telescopic chassis.............................................................................................................................. 75
5.6 Maintenance under the special cases.................................................................................................77

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6 Troubleshooting............................................................................................................................................ 78
6.1 General............................................................................................................................................... 78
6.2 Troubleshooting of mechanism system...............................................................................................78
6.3 Troubleshooting of hydraulic system .................................................................................................78
6.4 Troubleshooting of electrical control system......................................................................................83
6.5 Troubleshooting of diesel engine.......................................................................................................85
7 Transportation............................................................................................................................................... 88
7.1 Precautions for transporting the machine...........................................................................................88
7.2 Machine tie-down................................................................................................................................88
7.3 Machine slinging................................................................................................................................89
7.4 Loading machinery.............................................................................................................................90
7.5 Transport............................................................................................................................................. 91
7.6 Unloading...........................................................................................................................................91
8.Schedule.........................................................................................................................................................93
8.1 Engine configuration...........................................................................................................................93
8.2 List of auxiliary material consumption.............................................................................................. 94
8.3 CT12 packing list...............................................................................................................................95
8.4 Details of CT12 vulnerable parts and maintenance parts...................................................................97
8.5 Lifting capacity.................................................................................................................................. 98

1
FOREWORD
This manual contains a number of instructions and safety recommendations regarding driving,handling,
lubrication, maintenance, inspection and adjustment of the excavator.
The manual is to promote safety maintenance and enhance machine performance.
Keep this manual handy and have all personnel read it periodically.
If you sell the machine, be sure to give this manual to the new owners.
This machine complies with EC directive "2006/42/EEC".
1. Read and understand this manual before operating the machine.
This operator's manual may contain attachments and optional equipment that are not available in your area.
Please consult your local CARTER distributor for those items you require.
Improper operation and maintenance of this machine can be hazardous and could result in serious injury or
death.
Some actions involved in operation and maintenance of the machine can cause a serious accident,if they
are not done in a manner described in this manual.
The procedures and precautions given in this manual apply only to intended uses of the machine.If you use
your machine for any unintended uses that are not specifically prohibited, you must be sure that it is safe
for you and others. In no event should you or others engage in prohibited uses of actions as described in
this manual.
2. Inspect the job site and follow the safety recommendations in the safety hints section before operating
the machine.
3. Use genuine CARTER spare parts for the replacement of parts.
We expressly point out that CARTER will not accept any responsibility for defects resulting from non
genuine parts or non workmanlike repair.
In such cases CARTER cannot assume liability for any damage.
Continuing improvements in the design of this machine can lead to changes in detail which may not be
reflected in this manual. Consult CARTER or your CARTER distributor for the latest available information
for your machine or for questions regarding information in this manual.

SHANDONG CARTER HEAVY INDUSTRY MACHINERY CO., LTD.
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BEFORE SERVICING THIS MACHINE
It is the responsibility of the owner and all service and maintenance personnel to avoid accidents
and serious injury by keeping this machine properly maintained.
It also is the responsibility of the owner and all service and maintenance personnel to avoid
accidents and serious injury while servicing the machine.
No one should service or attempt to repair this machine without proper training and supervision.
All service and maintenance personnel should be thoroughly familiar with the procedures and
precautions contained in this manual.
All personnel also must be aware of any federal, state, provincial or local laws or regulations
covering the use and service of construction equipment.
The procedures in this manual do not supersede any requirements imposed by federal,
state,provincial or local laws.
CARTER can not anticipate every possible circumstance or environment in which this machine
may be used and serviced.
All personnel must remain alert to potential hazards.
Work within your level of training and skill.
Ask your supervisor if you are uncertain about a particular task. Do not try to do too much too fast.
Use your common sense.
Noise and vibration Declaration
Noise：
Normal working:
LwA=93dB(A), uncertainty =1.5dB(A)
Measured according to ISO 6395:2008;
LpA=84dB (A), uncertainty =1.5dB (A);
Measured inside the cab according to ISO 6396:2008;
Vibration:
The vibration total value to which the hand-arm system is subjected does not exceed 2.5m/s2;the
height root mean square value of weighted acceleration to which the whole body subjected is
6.6m/s2.
Note: vibration levels are influenced by many different parameters. Many items are listed below:
-Operator training, behavior, mode and stress;
-Job site organization, preparation, environment, weather, and material;
-Machine type, quality of the seat, quality of the suspension system, attachments, and condition
of the equipment.

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UK DECLARATION OF CONFORMITY
ACCORDING TO THE FOLLOWING UK REGULATIONS
1.1THE SUPPLY OF MACHINERY (SAFETY) REGULATIONS 2008 (AS AMENDED)
1.2ELECTROMAGNETIC COMPATIBILITY REGULATIONS 2016 (AS AMENDED)
1.3 THE NOISE EMISSION IN THE ENVIRONMENT BY EQUIPMENT FOR USE OUTDOORS
REGULATIONS 2001 (AS AMENDED)
THE UNDERSIGNED, CHANGJIN LIU, REPRESENTING SHANDONG CARTER HEAVY INDUSTRY
MACHINERY CO., LTD. / ECONOMIC TECHNOLOGY DEVELOPMENT PARK, LINSHU, SHANDONG,
P.R.CHINA, DECLARES THAT THE MACHINE DESCRIBED HEREAFTER:
PRODUCT NAME: HYDRAULIC EXCAVATOR
COMPLY WITH THE RELEVANT PROVISIONS OF REGULATION 2008, PROVIDED THAT IT ISUSED
AND MAINTAINED IN ACCORDANCE WITH THE GENERAL ACCEPTED CODES OF GOOD
PRACTICE AND THE RECOMMENDATIONS OF THE INSTRUCTION MANUAL.
PERSON AUTHORISED TO COMPILE THE TECHNICAL FILE:
CARTER DIGGERS UK AND NI LIMITED
HENALLT FAWR, BRONWYDD ARMS, CARMARTHEN, CARMARTHENSHIRE, SA33 6BB, UNITED
KINGDOM
FOR THE MOST SPECIFIC RISKS OF THIS MACHINE, SAFETY AND COMPLIANCE WITH
THE ESSENTIAL REQUIREMENTS OF THE REGULATION HAS BEEN BASED ON
ELEMENTS OF:
2.1 EN ISO 12100:2010 SAFETY OF MACHINERY - GENERAL PRINCIPLES FOR DESIGN -
RISK ASSESSMENT AND RISK REDUCTION
2.2 EN 474-1:2006+A6:2019 EARTH-MOVING MACHINERY - SAFETY - PART 1: GENERAL
REQUIREMENTS
2.3 EN 474-5:2006+A3:2013 EARTH-MOVING MACHINERY - SAFETY - PART 5:
REQUIREMENTS FOR HYDRAULIC EXCAVATORS
DATE:
PLACE:
STAMP&SIGNATURE
TITLE

SHANDONG CARTER HEAVY INDUSTRY MACHINERY CO., LTD.
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SHANDONG CARTER HEAVY INDUSTRY MACHINERY CO., LTD.
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Body and engine identification marks
CT12BU EU-Version
Your CARTER dealer is always ready to help so that
your excavator offers the best performance. After
having carefully read this manual, you will realize that
much of the routine maintenance can be done by
yourself. Your CARTER dealer is responsible for
servicing and the derivery of sopare parts. When order-
ring spare parts from your CARTER dealer, always
mention the serial number of the excavator and the
engine.
Note these numbers right away in the supplied lines.
Excavator Excavator
Excavator
Engine
Dealer’s name
(To be filled in through the owner)

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1Safety
1.1 Safety information
1.1.1 Recognize safety label
(a) This is the label of “safety”.
(b)When you see this label on the machine or in this manual, you should be aware that it
reminds of the risk of injury.
(c)Please follow recommended precautions and safe practices.
1.1.2 Understand signal words
The safety signs on the machine which indicate the degree of harm DANGER, WARNING or CAUTION and the
mark is used in conjunction with signs on the machine safety signs.
DANGER indicates a hazard with a high level of risk which, if not avoided, will result in death or serious injury.
Safety signage is positioned on the particular hazard nearby.
WARNING indicates a hazard with a medium level of risk which, if not avoided, could result in death or serious
injury. Safety signage is set in a particular crisis in the vicinity.
CAUTION indicates a hazard with a low level of risk which, If not avoided, may cause in minor or moderate injury.
General precautions listed in the CAUTION safety signs. In the present manual, the IMPORTANT is also used to
remind the attention to the safety instructions.
To avoid confusion between the machine protection and personal safety instructions, the signal word "important" is
used to indicate a situation that may cause damage to the machine.
To do additional description of the individual important information.

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1.1.3 Compliance with safety regulations
(a)Read and observe all safety signs carefully, machine and this manual
all safety relate dissues in the safety signs marked on the machine and
in this manual.
(b) When necessary, installation, maintenance and replacement of
safety signs.
(c) If the safety signs or the manual is damaged or lost, by an order like the same method ordering spare parts to
the specified sellers and CARTER Heavy for ordering them (Order required specifying the model and serial
number of the machine).
(d) Learning to operate and control the machine safely and correctly.
(e) Only trained and qualified personnel can be allowed to operate the machine.
(f) Keeping the machine in a suitable working conditions
(g) Make unauthorized modifications of the machine may be detrimental to its function and (or) security, and
affect the life of the machine.
(h) The safety instructions in the "Security" chapter are basic safety instructions of the machine. However, these
safety instructions don’t involve all the dangerous situations you may encounter. If have any doubt, please contact
with you specifies dealer or CARTER service engineer firstly before operating and maintaining of machinery.
1. Understand the safety equipment
(a) Ensure that all guards and cover are in the appropriate location. If the guards and the cover are damaged, please
repair them immediately.
(b)Understand the method of using the safety device and use it correctly
(c) Do not remove any safety devices, and to ensure that they remain in good working condition.
2. Keep machine clean
(a) If there is water in the electrical system it could cause the machine failure. Do not use water or the steam to
flush electrical system such as sensors, connectors
(b) When checking or maintenance, if the machine with mud or oil, it may result in the risk of slipping, falling and
harming eye by dirty things. So please keep the machine clean.
3. Keep cabin in clean
(a)When entering the cabin, be sure to remove dirt and grease under the shoes. The operation of the pedal with the
shoes carrying mud or oil, the foot will slip which could cause a serious accident.
(b) Do not leave parts or tools in the cabin.
(c) Do not stick suction pad to the glass. Suction pad play the role of magnifying function, it may cause a fire.
(d) When driving or operating machinery, do not use a mobile phone in the cabin.
(e) Dangerous goods (such as flammable or explosive materials) should not take into the cabin.
4.To leave the seat in a locked condition
(a)Operator stood up from the seat, such as adjust the seat, has
to make the work unit is completely lowered to the ground, the

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safety lock lever firmly pull into the locked position, and then
turn off the engine. If the control joystick is not locked, and
accidental touching the joystick, the machine may move
suddenly and causing serious injury or damage to the machine.
(b)When leaving the machine, be sure to operating device is fully
lowered to the ground,Safety lock lever firmly pull into the locked
position, and then closed engine. With a key to lock the device, then
remove the key and placed in a predetermined position.
5. Emergency preparedness
Takeprecautionsagainst fire or accident
(a) Prepared and placed first aid kit and fire extinguisher equipment
nearby.
(b) Carefully read and understand the instructions attached to the fire
extinguisher and correctly use the fire extinguishers
(c) Make the emergency guide measures to deal with fires and accidents.
(d) The telephone number of Doctors, ambulance, hospital, and fire
department should be sticked by the phone.
6. Wear protective equipment
Wear tight clothing and safety products suitable for work.
You may need the following safety products:
Hard helmet
Safety Shoes
Safety glasses, goggles or face shield
Heavy duty gloves
Hearing protection
Reflective clothing
Rain gear
Masks or filtration masks
Always wear work clothes and safety supplies, do not leave things to
chance.
Avoid wearing loose clothing, jewelry or other things may be hooked
by joystick.
Safe operation of the machine requires the operator to concentrate. Do
not listen to the radio or music while operating.
7. Noise protection
(a)Prolonged exposure to loud noise can cause hearing impairment or
loss.
(b) Wear suitable hearing protectors, such as ear plugs to avoid harmful
or strong unpleasant noise.
(c) Noise of the machine is more than 80dB (A), the operator should
wear earplugs or earmuffs.

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8. Check machine
(a)To avoid personal injury, every day before starting the machine,
check the machine carefully.
(b) In the tour check carefully around the machine, be sure to “check
before the start of the inspection” described in the chapter all.
9. Use handrails and ladders
Always observe this precaution to ensure safety!
(a) The drop is one of the main causes for personal injury
(b) Up-and-down the machine, always with the pedal and handrails to
maintain three points of contact, and machine-oriented.
(c) Do not put any lever, the cabin door handle as a handrail.
(d) Can not jump on/off the machine, and do not get on/off the moving
machine.
(e) When using the machine, pay attention to the platform and handrails
slippery.
(f) Oil, mud and water in handrails and shoes should be cleaned any
time.
10. Adjust the position of the seat
(a) Uncomfortable seat is likely to cause fatigue, leading to operational
mistake.
(b) In each exchange machine operator, and should be re-adjust the
position of the seat.
(c) When the operator back on seat back, you should be able to step on
the pedal to the end, and correct the operation of the joystick. If not,
move forward and backward seat, re-adjust.
11. Fasten seat belts
(a) In the case of a rollover accident, the operator may be injured or
throwing out of the cabin, or may be pressing down by the machine,
then cause serious injury or death.
(b) Before operating the machine, check the seat belts, buckles and
solid set pieces carefully. If you find any damage of the seat belts, it
should be replaced before operating.
(c)While operating the machine, be sure to sit on the operating chair
and fasten your seat belts, in order to minimize the possibilities of
accident injuries
(d) Best to replace seat belt per three years, no matter what condition it
is.

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12. Not-allowed to get on/off the machine at will
(a) Do not jump on/off the machine when it’s moving.
(b) If the machine begins to move in the absence of the operator, do not jump on the machine and tried to stop it.
13. Not allowed to sit on the machine at will
Do not allow anyone sitting on a bucket or other attachments, or it may falls and cause serious injury.
14. To ensure a good vision
(a) To ensure safe operation or walking, to check if anyone in the area around the machine or disorders and workplace.
(b) When working in a dark place, turn on work lights and headlights on the machine, if necessary, set the auxiliary
lighting in the work area.
(c) If the vision is not good, as fog, snow, rain or dust, to stop the operation.
15. View the Construction site in advance
(a) When working on the side of ditch or the road shoulder, the machine
can turn over; this will cause serious injury or death.
(b) Prior to survey the terrain and ground conditions of the site, in order
to prevent the machine to tip over or fall, or even the ground, stockpile
or the river bank collapsed.
(c) The development of operational plans to use the machine for your
job or site.
(d) As required reinforcement the ground, ditch side and road shoulder,
to ensure a safe distance between the machine and ditch and road
shoulder.
(e) When operating in diagonally or shoulder of the road, according to
need to arrange signalman command.
(f) Before starting work local in trust between soft, must be reinforced
ground.
(g) Operations on the frozen ground, to be especially vigilant. Because
the ambient temperature rise to causes the ground to become soft and
slippery.
16. Prevention of falling stones and gravel
(a) Work in the condition where may fall rocks or stone, to ensure
that the cabin is equipped with falling object protective net.
(b)Wear a helmet and protective eyewear.
17. Multi-machine operation signaling
In the case of multi-machine operation so that all workers unified signal,

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specify a signalman to organize the job,while ensuring that all workers
obey the command.
18. Signalman signals and gestures
(a) To set the flag on the shoulder or soft ground. If the vision
is not good, if necessary, arrange for a signalman command.
The operator should pay particular attention to the signs, and
obey the command of the signalman.
(b) Only signaled by one signalman.
(c) Before starting work, ensure that all operators are aware of
all signals and gestures.
19. Keep away from rotating parts
(a) It maybe results in serious injury if caught in moving parts.
(b) Working next to the rotating member, need to be very careful of
hands and legs, clothes, jewelry and hair so that will not rotating
member involvement.
20. Prevent parts flying out
The track adjusters grease usually in the high pressure, if not avoided
the following precautions may result in serious injury, blindness or
death.
(a)Do not remove the grease fitting or valve parts.
(b)Parts could come out of, so the body and face should be away from
the valve body.
(c) Walking reducer with pressure.
(d) As part could come out, so the body and face must be away from the
air drain plugs, to avoid injury.
(e)Because the gear oil is hot, gradually release air emissions tied to
wait for gear oil cooling, the pressure was released.
21. Prevent falling objects, flying objects and invader
(a)Falling objects, flying objects and invader hit or enter the driving
cabin dangerous workplaces, depending on the operating conditions;
security mounted the necessary shield to protect operating personnel.
(b) When the removal or crushing operation, to install the front shield,
and posted the front glass transparent cellophane.
(c) When the risk of falling rock mine or quarry operations, to install
FOPS (Falling Object Protective Structure) and the front shield and
posted in the glass transparent cellophane.
(d) Above described is for typical conditions, according to the site
operation, you may need to install other guard. When any part of the
protection structure, like ROPS, FOPS, and TOPS (rollover protection

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structure), and so on appear the plastic deformation or fracture (for
example, subject to due to roll, Falling Object shocks or tipping) ,
please contact with CARTER Heavy Industry dealer in a timely manner,
the protective structure has to be replaced according to manufacturer’s
specifications.
22. To prevent burns
(a) The discharge of the high temperature liquid:
Machine operation, the cooling water of the engine is hot
and pressure. If the skin is exposed to a spill or spray of hot
water or steam will cause serious burns.
When the engine is hot, do not open the radiator Cover, and
first slowly rotate the lid to be fully released off the pressure,
then remove the cover and release the pressure.
Hydraulic tank is pressurized to ensure release the pressure
before the lid is removed.
(b) High-temperature liquid and surface:
In operation, the engine oil, gear oil and hydraulic oil will become hot.
Engines, hoses, tubing, and its parts become hot. It should wait until oil
and component cooling only after inspection or maintenance work.
23. Prevent falling
(a) Storage of accessories, such as a bucket, May topple over, resulting
in serious injury or death.
(b) Safely store accessories and machinery to prevent falling.Children
and other non-essential personnel should stay away from the storage
area.
24. Be careful high-pressure liquid
(a) Pressure injection diesel oil, hydraulic oil, liquid penetrate the skin
or injected into the eye, resulting in serious injury, blindness or death.
Therefore, before demolition hydraulic or other pipeline must release
the pressure in order to avoid these dangers.
(b) Tighten all the links before increase the pressure.
(c) With cardboard to find if it is leak, pay attention to protect your
hands and body free from exposure to the high-pressure liquid. Wear a
face shield or goggles to protect the eyes.
(d) If an accident occurs, immediately accepted professional surgeon
treatment. Any liquid in to the skin must be surgical remove in several
hours; otherwise it will lead to gangrene.

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25. Prevent fire
(a) Check the oil spills
Fuel oil, hydraulic oil and grease leaks may cause fire
disaster.
Check whether the holder is missing or loose, the hose is
twisted Knot, or hose, piping friction between oil cooling is
damaged, and oil cooler flange bolts are Relaxation, in order to
avoid oil spills.
The tightening, repair or replace any missing, relaxation or
damage the holder, piping, hoses, oil cooler and its law blue
bolt.
Do not bend or strike high pressure lines.
Do not install bent or damaged pipe, tube or hose.
(b) Check the short circuit
A short circuit will cause a fire.
Clean and tighten all circuit connections.
In each shift before or after 8-10 hours of operation, check the cable and wire is loose, kink, hard or cracked.
Before each shift, or 8-10 hours after the operation, then check stud end cap is lost or damaged.
Do not operate the machine if cables or wires relaxed and kinked.
(c) Clear combustibles
Spilled fuel and hydraulic oil, garbage, grease, broken debris and other combustible materials may cause a fire.
Check and clean machine every day, promptly remove spilled or accumulation of combustible material, to prevent
fire.
(d) Check the key switch
Fire if not stop the machine, it will increase the fire situation is not conducive to the fire. Daily before operating the
machine must to check the function of the key switch, to start the engine, in order to idle speed no-load operation,
the key switch to OFF position, and confirm whether the engine is came to a halt or not.
(e) To prevent lighting equipment cause an explosion
When checking the fuel, oil, battery electrolyte, windows
Washing-up liquid coolant, to use explosion prooflighting equipment.
If not use this kind of lighting equipment, the explosion caused
serious injury.
When the power of the machine used for lighting, to comply with
the prescribed instructions.
(f) Check the heat shield
Shrouds damage or loss may cause a fire.
If any abnormalities are found, make sure before operating the
machines Repair or coupled with new heat shield.
26. Measures in the event of fire

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(a)If the fire breaks out, evacuated machines as the following:
If time permits, switch the key to the OFF (off)
Position, stop the engine.
If time permits, use of fire extinguishers,
(b)In case of emergency, if not open cabin, take the hammer and break
the rear or side glass, to escape from the cabin.
27. Avoid heating near the hydraulic lines
Flammable spray will been burned in the vicinity of the pressure tube
heating, which will lead to you and others next to you severely burned.
Do not welding, soldering or gas welding nearby the
hydraulic pipe or other flammable materials.
When Burning over directly combustion area, the hydraulic
pipe may be cut off at any time. The machine should be install
temporary jacket to protect hoses or other materials while
welding, soldering and other operations.
28. Avoid heating pipes where there are flammable liquids.
(a) Do not welding or gas cutting pipes or hoses where contain
flammable liquid.
(b) Before welding or gas cutting pipes, completely cleared flammable
liquid with non-combustible solvent.
29. Remove the paint before welding or heating
(a) Paint may produce harmful gases in welding, soldering, or using the
gas torch; inhalation of these gases can cause nausea.
(b) Prevent to producing potential toxic gases and dust.
(c) Removal paint in outdoors or in a well-ventilated place.Correct
disposing of the paint or solvent to protect the environment.
(d) Remove the paint where need to weld or heat:
Wear respirator to prevent inhalation of dust, if using
sandpaper and grinding wheels to remove the paint.
Using Soap liquid to remove the paint or varnish removers
before welding if you use solvent or varnish removers to
remove the paint. Clear the solvent or paint remover’s
containers and other flammable materials in the working area.
Waiting at least 15 minutes before heating or welding for
dispersed the volatile gas.
30. Prevent battery exploding
（a）Battery gas could explode.
Avoid sparks, lighted matches and flame close to the top of
the storagebattery.
Using a voltmeter or aerometer to check up the battery

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power, not use the method of placing a metal contact the
electrode.
Do not charging to the frozen battery, otherwise it would
cause explosion. The battery should be warmed to 16℃.
(b)Electrolyte of battery is poisonous.If the battery were exploded,
battery electrolyte is splashed into the eyes which could lead to
blindness.
(c) Be sure to wear goggles when checking the specific gravity of
electrolyte.
If the Sulfuric acid were spilled on the body accidentally, should process as follows:
First, flushing skin with water.
Then, using soda or lime to neutralize the acidity.
Addition, rinsing with water for 10-15 minutes and seek medical advice immediately.
31. Ventilating of the closed area
If must start the engine in a closed area, or disposing of fuel,cleaning oil
or paint, be sure open the door and windows to adequate ventilation to
prevent gas poisoning。
32. To prevention the risk of asbestos dust
(a) If inhaled asbestos dust in the air were caused lung cancer. When
engaged in demolition work in the workplace or treatment of industrial
waste, it has the dangers of asbestos inhalation. Be sure to observe the
following rules
When cleaning, water sprays dust suppression, do not use
compressed air to clean.
If there are asbestos dust in the air, must be in the limelight
position to operate the machine, all personnel should use
qualified dust masks.
Other people should not be close to the machine when
working.
To comply with regulations, rules and environmental
standards in the workplace.
(b)This machine does not use asbestos, but counterfeit parts may
contain asbestos, so be sure to use CARTER spare parts.
33. Safety handling the chemicals
Direct contact with harmful chemicals on the human body can cause
serious injury. The chemicals used in the present machine, such as

SHANDONG CARTER HEAVY INDUSTRY MACHINERY CO., LTD.
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lubricants, coolants, paints, and a binder, may be harmful.
Material Safety Data Sheet provides the details of the
chemicals on the human body and health hazards, safety
procedures and emergency measures.
Before using the hazardous chemicals should be verified
with the data table, so will be able to really understand the
danger, and know how to conduct security operations, and then
work in accordance with the procedures using the
recommended tools.
Chemicals Safety Data Sheets (MSDS)which used in
machine should be obtained from the local dealer and the
service division of CARTER。
34.Proper waste disposal
(a)Disposing the waste improperly may harm to the environment and
ecological .The potentially hazardous waste in CARTER heavy
equipment, including hydraulic oil, fuel, coolant, refrigerant, filters,
and batteries and other items.
In the discharge of liquid, should be use leak-proof
containers.Do not use food or beverage containers, because it
may lead to accidental ingestion.
Do not pour the waste into the ground, sewers, or poured
into any water source.
Refrigerant leak into the air can destroy the Earth's
atmosphere. Government regulations require a certified air
conditioning service center to recovery and recycling of
refrigerant.
(b) Inquire local environmental, recycling center or your dealer
about the correct ways of how to recovery or disposal of waste.
35.Installed accessories
(a)When installing the optional accessories, exist security or legal constraints, so please contact with CARTER
dealer in advance.
(b)CARTER is not responsible for the injury caused by using of unauthorized accessories or parts.
(c) When installing and using the optional accessories should read the accessories manual or manual attachment.
36. Attachment combination
(a)Different types or combinations of the working apparatus may cause the risk of collision the driver's cabin or
other components of the machine.
(b) Before using unfamiliar working device, please check whether there is the risk of interfering with each other, and
work carefully.
37.Unauthorized modification
(a) Before modification you should have to contact with CARTER dealer.Any modification without approval of
CARTER will cause dangerous.

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(b) In the case of without the approval of the CARTER, for any harm caused as a result of the modification,accident
or product failure,CARTER assumes no liability whatsoever.
1.2 Safety operation of the machine
The machine is not intended for use in unhealthy enviroments, e.g. contaminated areas.
The machine is not intended for operation with a hydraulic- or demolition-hammer.
Operating the machine, the operator should wear earplugs or earmuffs.
Hydraulic excavator CT12 is suitable for I-IV soil excavation and loading operations. In the mechanized construction of
industrial and civil construction, transportation, road construction, water resources and electric engineering, farmland
transformation, it can be widely used for excavation pit channel, backfill pavement, earth mining, digging build sub
grade, stripping, mining and so on.
1.2.1. Before starting the engine
1. The check before starting the engine
Wipe away the dust on the surface of the window glass, to ensure a good vision.
Clean the headlights and work lights well, and check whether they are normal.
Check the coolant level, fuel level and engine oil sump oil level.
Check the air filters if it is blocked, and check the wires for damage.
The seat adjusted to the easy operation, and checks the seat belt or the retaining clips damage or not.
Check that the instrument is working properly, check the light and the angle of the lights and check the control lever
is all in the middle position.
Adjust the rear view mirror, so that you can clearly see from the seat and the back of the machine.
Make sure there are nobody and barrier around the machine.
2.Safety regulation for starting the engine
(a) When starting the engine, honking for warning.
(b) Only allows the driver to start or operate machine.
(c) In addition to the operator, does not allow anyone on the machine.
(d) Not allowed to start the engine by the way of which cause the starter motor short circuit, doing so is not only
dangerous, but also cause damage to the equipment.