TROUBLESHOOTING
BOOM
5
5
BOOM 5G0AX001
b. Disconnect hose (B) from the head side only and
drain oil from the cylinder piping. Insert a plug (2)
into the disconnected hose.
c. Operate the bucket to raise the machine body. If
oil leaks from the cylinder piping from which the
hose was disconnected and the boom cylinder
rod extends, the cylinder is leaking internally.
If no oil leaks from the cylinder piping and the
boom cylinder rod extends, the control valve is
leaking internally.
If the cylinder is damaged internally, the system
will need to be flushed out to remove any debris.
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