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METHOD FOR USING BLOCK
k
k
WARNING
Select a firm flat place.
Put strong blocks under the undercarriage to stabilize the machine and be extremely careful when per-
forming the operation.
1.
Raise the machine off the ground by using the boom and arm.
When doing this, operate the levers slowly.
2.
Place block (5) under the raised track and make sure that
the machine is stable.
3.
Operate the boom slowly and lower the machine.
When doing this, check that the machine is always stable.
METHOD FOR CHECKING GAS SPRING
k
k
WARNING
The gas spring is charged with high-pressure nitrogen gas, so improper handling may cause an explo-
sion resulting in serious personal injury or death. When handling, always observe the following.
• Do not disassemble.
• Do not bring open flame close to it or do not dispose of it in fire.
• Do not perform drilling, welding or flame-cutting.
• Do not hit or roll it, or subject it to any impact.
• When disposing of it, the gas must be released. Ask your Komatsu distributor to have this work per-
formed.
MAINTENANCE PROCEDURE
MAINTENANCE
4-38
Содержание PC490-11
Страница 2: ......
Страница 25: ...LOCATION OF SAFETY LABELS a b c d e f g h KS000848 T T SAFETY SAFETY LABELS 2 5...
Страница 48: ...Map with mirror and rear view camera visibility aids fitted PRECAUTIONS FOR OPERATION SAFETY 2 28...
Страница 72: ......
Страница 73: ...OPERATION Please read and make sure that you understand the SAFETY section before reading this section 3 1...
Страница 340: ......
Страница 341: ...MAINTENANCE Please read and make sure that you understand the SAFETY section before reading this section 4 1...
Страница 421: ...SPECIFICATIONS 5 1...
Страница 425: ...6 7m Boom PC490 11 SPECIFICATIONS SPECIFICATIONS 5 5...
Страница 426: ...6 7m Boom PC490LC 11 SPECIFICATIONS SPECIFICATIONS 5 6...
Страница 428: ...7 1m Boom PC490 11 SPECIFICATIONS SPECIFICATIONS 5 8...
Страница 429: ...7 1m Boom PC490LC 11 SPECIFICATIONS SPECIFICATIONS 5 9...
Страница 430: ......
Страница 474: ......
Страница 475: ...REPLACEMENT PARTS 7 1...
Страница 491: ......
Страница 492: ...PC490 11 PC490LC 11 HYDRAULIC EXCAVATOR Form No UENAM01105 2016 KOMATSU All Rights Reserved Printed in Belgium 11 2016...