The following manual is for reference purpose only and we make no claim of representation for the DM12-C product or manufacturer.
Maintenance
Instructions
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Dear users:
Thank you for your trust and love for our products ! The mini-excavator
manufactured by the Company is a small excavator which is mainly used for the
excavation operation, hoisting as well as loading and unloading. The mini-excavator
has compact design structure, proper power, good product stability and high-cost
performance, and meets the requirements of excavation, loading and unloading under
different operating conditions such as plains, hills and forest areas. The
mini-excavator is suitable for use in brick and tile factories, kiln factories, river
courses, buildings. as well as desilting and road construction, which is the most idea
construction mini-excavator for farmland operation and small projects.
This manual is a operating manual prepared for the safe and efficient operation of
the machine.
Before operating this machine, always read this manual and fully understand the
operation, inspection and maintenance until you have full knowledge.
All data, charts and technical specifications in this manual use the latest product
data available when this manual is published.The Company reserves the right to
change at any time without further notice.
If accidentally operating the machine, it will result in serious injury or death.
Operators and maintenance personnel should carefully read this manual and fully
understand its contents before performing the operation or maintenance of the
machine.
For easy access, keep this manual properly for regular reading by qualified
machine operators.
Please operate the machine after fully understanding the contents of this manual.
Please keep this manual within reach and read it repeatedly.
If this manual is lost or damaged, please order it immediately from us or our
Agents.
When transferring this machine, please transfer this manual together to facilitate
the proper use of the next owner.
For safety, please be sure to read the "safety-related precautions" described in this
book.
Manufacturer's requirements
Pledge
The quality assurance scope of this machine shall be subject to the quality
warranty provided by the manufacturer Where the failure of the machine is the
responsibility of the manufacturer,
For example, loss of normal function and operation failure, repaired by the
manufacturer free of charge.The Department is not responsible for the loss of normal
function and machine failure due to user negligence or failure to follow the
instructions of this manual.
lf the user considers a problem in the service. please contact the company after
Sale.
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User attention
If the contents of this manual do not consistent with the machine you use or have
any other questions please contact your company immediately after sale.
Security related information
Most of the accidents related to operation operations, inspection, maintenance,
and repair operations are caused by basic negligent safety precautions and hazard
forecasts.
Accidents can be prevented in the bud by predicting dangerous
conditions.Therefore. attention must be paid to the location and type of danger.(To
properly perform such operations, you must have the specified training, techniques,
and tools.)
Improper operation operation and improper inspection and maintenance
operations are very dangerous and will lead to personal injury accidents.
Please carefully read all the safety precautions, warnings and accident precautions
documented in this manual and machine and understand the contents until fully
mastered.,otherwise absolutely not Ability of machine operation and inspection and
maintenance operations.If these warnings will cause personal casualties, be attention.
The safety tips of this manual, the safety signs used on this machine, distinguish
the extent of the possible hazards by the following warnings.Also includes
Prevention methods to avoid danger.
The Company cannot predict all hazards operation, inspection and maintenance
in all environments.Therefore, the warnings indicated on this manual and this
machine do not cover all cases.If the operation, inspection and maintenance are not
involved in this manual, please consider the necessary safety precautions by
themselves.Users are personally responsible to take the necessary safety measures.
Safety Regarding proper maintenance and maintenance of the machine.The
recommendations are printed in the relevant sections of operation and maintenance in
this manual.Poor maintenance or maintenance steps are dangerous and can lead to
injury or death.Read and understand sections of operation and repair before any
maintenance or repair.
Maintenance personnel or technicians may not be familiar with many systems of
the machine. so special attention when performing services.When loading and
unloading any part,
It is important to have the knowledge of the system and components
Many machines have parts size or weight, maintenance personnel or mechanics
can find information in this manual, and suitable cranes should be used when
removing any parts.
With.
The following are the basic things to note:
1
repair.
2
.All warnings, notices, and signs shall be read before operation, maintenance. or
.Wear goggles and feet when working around any part of the machine or any
accessory parts such as a crusher or a heavy hammer shoes.For welding work, wear
welding gloves, head covers, apron guards and other protective overalls as
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appropriate.Don't wear it loose or broken damaged clothes.Remove all of the rings
while working off the machine.
.Remove the battery negative line and hang the "Do not operate" sign in front of
the cab before repairing the machine.
.When repairing the machine, park the machine as hard as possible and fix the
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4
machine so that it is working above or below the machine will not slide.
Do not operate the machine until you read and understand this
manual.Because the incorrect operation of the machine is dangerous and
can result in injury or death.
5.During any decomposition, the machine does not work if it is simply
suspended.The machine must be stably supported or fixed before being on the
machine work.
6
. Release the pressure (e. g, air, oil, cooling water system, etc.) before removing
any line, plug.or related components.
. Before doing any work on the machine, drop the ground.If some components
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cannot fall to the ground, determine whether they are properly fixed to avoid
accidental falls.
8. Use the steps, railings, and walkways when going up and down the machine.To
remove the above debris before use, and face the step stairs and walkway. If the
designed auxiliary equipment cannot be used, please prepare an additional ladder,
eagle frame or work platform for safe repair or operation
9. To avoid waist injury, use a sling for heavy parts of over 23 kg (50lbs).And
determine whether all the chains, hooks, etc.. are in the normal use state.
10. Pay attention to the hot part of the machine to avoid burns.
11. Be careful when removing the cover plate.Gradually remove the last two bolts
or caps, pay attention to the spring or other pressure components before complete
removal.
12. Use special care when opening the water tank cap, oil cap, and other plugs.For
example, avoid a liquid with pressure pouring out, because this condition is quite
dangerous.
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3. The tools should be kept in good condition.Know the tools for any work.
4. Reinstall the fixed clip with the same part number, and do not use secondary
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products if it must be replaced.
5. Appropriate reference materials shall be provided for welding and
repair.Welding technicians shall have sufficient training and relevant knowledge.
6. Do not damage the wire when removing, and take careful not to damage the
wire when reinstalling.Be careful not to touch the liquid when connecting the wire.
7. Before starting the repair, determine that all protective covers and other
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1
1
devices have been properly installed.Double down if the protection device must be
removed during repair pay attention to.
18. During maintenance or repair, hold the arms, and place them on the ground.
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9.Relax or damaged fuel pipes, oil pipes and hydraulic pipes are dangerous.So
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you should wear work clothes at work, but do not wear loose or damaged clothes
service, because the hydraulic oil pipe may cause a fire.Do not fold or tap the high
pressure pipe, damaged pipe do not use again.Please do not measure the leak by
hand.Because the very small pinhole can not be seen by the naked eye, and it may be
injured by emitting high-pressure liquid at high speed.Use sheets of paper or splints to
find out the location of the pinhole.
20. Each oil pipe joint shall be tightened with the correct torque
wrench.Determine that all heat insulation plates, clamclips and covers are in safe
condition.Avoid overheating. vibration, or friction with other components during
operation.
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1. If any rotating part is damaged or interfered with any other part, the machine
operation must be stopped.
2. Special attention should be paid to crawler machines during repair or
2
decomposition.Because plug pins or debris may fly out during loading and
unloading.When the machine sprocket of the machine is removed, the machine.It may
move unexpectedly.So place barriers to prevent the machine from moving and moving
away from the front and rear of the machine.
23. Special care should be taken when there are asbestos fibers on the parts. This
dust will cause harm to the body if inhaled. If asbestos fibers are found in
components, the following points must be noted:
A.Do not use compressed air cleaning components.
B.Avoid brushing grindstone cotton fiber materials
C.Use wet cleaning or vacuum equipment with a hePA screen when cleaning
D.Use exhaust fan when working for a long timed
E.Wear protective mask if there is no other way to control dust
F.Comply with workplace rules
G.Dispose of asbestos fibre waste in accordance with environmental regulations
H.Avoid asbestos-prone areas,especially when filled with air
Periodic checklist
Note(grease up):
Root surface of rotary bearing.
At inner ring of rotary bearing.
①
①
①
③
③
④
②
Note (grease up):②chassis and
guide wheel tension part.Chassis,such as:
③
Push and shovel cylinder 2;
③
④Push the shovel 2。
③
④
⑥
①
⑤
④
⑤
②
⑤
①
Note (grease up): Lubricating grease is added to the working device as follows;
(
(
(
(
(
(
1)Big arm cylinder 2;
2)Big arm and side swing head 1;
3) Bucket rod cylinder 2;
4)Bucket cylinder 2;
5)Bucket connecting rod 3;
6)Boom bucket rod 1.
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