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PRECAUTIONS FOR MAINTENANCE
HANDLE ACCUMULATOR AND GAS SPRING
This machine is equipped with an accumulator. For a while after the engine has been stopped, if the work equip-
ment control lever is operated in LOWER direction while the starting switch key is at ON position, the work
equipment goes down with its own weight.
After stopping the engine, turn the work equipment lock switch to LOCK position and the parking brake switch to
ON (operation) position.
The accumulator and gas spring are charged with high-pressure nitrogen gas. If the accumulator is handled
mistakenly, it may cause an explosion. It is dangerous and may cause serious personal injury or death. Always
observe the following.
•
Do not disassemble.
•
Do not bring it near flame or dispose of it in fire.
•
Do not make holes in it, weld it, nor use a cutting torch.
•
Do not hit or roll the accumulator, or subject it to any im-
pact.
•
When disposing of the accumulator, the gas must be re-
leased. Ask your Komatsu distributor to perform this work.
PRECAUTIONS FOR COMPRESSED AIR
•
When performing cleaning with compressed air, there is a hazard of serious personal injury or death
caused by flying dust or particles.
•
When using compressed air to clean the filter element or radiator, wear protective eyeglasses, anti-dust
mask, gloves, and other protective equipment.
MAINTENANCE OF AIR CONDITIONER
If air conditioner refrigerant gets into your eyes, it may cause loss of sight; if it contacts your skin, it may cause
frostbite. Never loosen any parts of the cooling circuit.
CHEMICAL HAZARD
During maintenance or dismantling operations, where there is the risk of contact with hazardous chemical sub-
stances, relevant safety precautions should be taken.
If any doubt exists, contact your Komatsu distributor.
See also "PRECAUTIONS FOR DISPOSING OF WASTE MATERIALS (2-44)" and "MAINTENANCE OF AIR
CONDITIONER (2-44)"
PRECAUTIONS FOR DISPOSING OF WASTE MATERIALS
To prevent pollution, pay full attention to the way to dispose of waste materials.
•
Always drain the oil from your machine in containers. Nev-
er drain the oil and coolant directly onto the ground or
dump into the sewage system, rivers, seas, or lakes.
•
Obey appropriate laws and regulations when disposing of
harmful objects such as oil, fuel, coolant, solvent, filters,
batteries, and DEF.
Avoid exposure to burning rubber or plastics which produce a toxic gas that is harmful to people.
•
When disposing of parts made of rubber or plastics (hoses, cables, and harnesses), always comply with the
local regulations for disposing industrial waste products.
2-44
SAFETY
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