Komatsu PC45MR-30403, Operation And Maintenance Manual

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METHOD FOR REPLACING ACCUMULATOR (FOR CONTROL CIRCUIT)
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WARNING
The accumulator is charged with high-pressure nitrogen gas. Observe the following for handling it, oth-
erwise improper operation may cause an explosion which will lead to serious injury or death.
• The pressure in the hydraulic circuit cannot be completely removed. When removing the hydraulic
equipment, do not stand in the direction that the oil spurts out when performing the operation. In
addition, loosen the bolts slowly when performing the work.
• 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 perform this work.
NOTICE
If the nitrogen gas charge pressure in the accumulator is low and operations are continued, it becomes
impossible to release the remaining pressure inside the hydraulic circuit if a failure occurs on the ma-
chine.
Replace the accumulator every 2 years or every 4000 hours, whichever comes sooner. Ask your Komatsu dis-
tributor to replace it.
The accumulator is installed to the position shown in the figure.
MAINTENANCE PROCEDURE MAINTENANCE
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