Check Nitrogen Gas Charge Pressure In Accumulator (Control Circuit) - Komatsu PC600-6 Operation And Maintenance Manual

MAINTENANCE PROCEDURE

CHECK NITROGEN GAS CHARGE PRESSURE IN ACCUMULATOR (control circuit)

NOTICE
If the nitrogen gas charge pressure in the accumulator is low and operations are continued, it will become impossible to release
the remaining pressure inside the hydraulic circuit in a failure occurs on the machine.
Check the nitrogen gas charge pressure as follows.
1. Set the work equipment to maximum reach as shown in the
diagram on the right.
2. Stop the engine and carry out the LOWER operation for the boom.
3. Check that the tip of the bucket drops at least 1m.
If the tip of the bucket drops less than 1m, the charge pressure inside the accumulator is low, so please contact
your Komatsu distributor.
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MAINTENANCE