1. General introduction
6
7. Follow the instructions provided by the battery manufac-
turer when checking or handling batteries.
8. Only authorized skilled technicians should repair and
maintain engines.
9. Only appropriate tools should be used. If the jaws of a
wrench are worn out, the wrench might slip during use,
causing safety accidents.
10. Do not allow other persons to stay or pass under an
engine when lifting the engine with a crane. Before lifting
the engine, ensure that there is no one around the engine
and to secure enough safety space.
11. Before inspecting or replacing the electrical apparatus,
disconnect the battery ground wire first. Connect the
battery ground wire after completing all required work for
checking or replacing the electrical apparatus in order to
prevent a short circuit.
12. Before performing electric welding works, turn off engine,
block the power supply to the engine, and remove the
wire harness connector.
13. Do not give any electric or mechanical shocks or perform
welding works on the electrical apparatus or the ECU.
General Repair
1. Wait until the engine is properly cooled down before
starting work, since you may get burned by the heated
engine.
2. Disconnect the battery ground wire from to prevent
damage of wires and sensors caused by a short circuit.
3. Engine oil and coolant may damage paint and should be
stored in a separate container and marked for safe
management.
4. Store the disassembled parts in a specified space to
avoid damage or pollution.
5. Use specified and special tools for efficient and safe
repair.
6. If parts need to be replaced, use only genuine parts for
replacement. Using unauthorized or remanufactured
parts may cause critical damage and faults in engine
performance.
7. Replace parts such as cotter pins, gaskets, O-rings, seal
rings, oil seals, and washers with new ones during
repairs. Reuse of parts may be the cause of engine faults
and engine may not operate properly.
8. Group and store disassembled parts in disassembling
order. Due to the fact that bolts and nuts vary in strength,
shape and torque according to their assembly position.
Please divide and store them accordingly to these char-
acteristics.
9. Clean disassembled parts to remove foreign substances
before inspecting or reassembling parts. Use
compressed air to clean the oil holes or holes.
10. Thinly spread oil or grease on rotating parts or parts
requiring lubrication, before assembling them.
11. If required, use a specified adhesive to assemble gaskets
to prevent water or oil from leaking.
12. Assemble bolts and nuts with the specified tightening
torque.
13. After completing repairs, conduct a final inspection and
perform a test operation to check if all works have been
successfully completed.
Other Safety Instructions and Environmental
Pollution
Observe the following instructions to protect workers from
danger and to prevent the environmental pollution while
performing engine repairs.
1. Good ventilation and low humidity should be maintained
in the work space.
2. The workspace should be clean, in good order, and no
flammables are allowed in the workshop.
3. Smoking is strictly forbidden in the workshop.
4. Workers should wear working clothes, protective
goggles, and safety shoes.
5. Workers are not allowed to wear accessories such as
necklaces, rings, watches, and earrings.
6. Start the engine in a well-ventilated space and fully venti-
late the space before starting engine to prevent carbon
monoxide poisoning.
7. Wait until the engine is properly cooled down before
starting work, since you may get burned by the heated
engine.
8. Do not work on rotating or running parts once the engine
has been started.
9. Discard oil according to the regulations set forth by the
relevant authorities.
10. If engine oil or fuel leaks on the floor or is improperly
discharged, serious environmental pollution of sea, river
or underground water may occur.
Battery fluid is corrosive and dangerous because of its
explosiveness and toxicity. Therefore, it should only be
handled by a skilled technician who specializes in
battery fluid.
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