Komatsu PC220LC -8 Operation & Maintenance Manual page 365

ATTACHMENTS AND OPTIONS
MACHINE READY FOR ATTACHMENT
Oil Flow Path
The direction of operation of the pedal and the path of the oil flow is as shown in the diagram below.
When the front of the pedal is depressed, oil flows to the piping on the left side of the work equipment; when the rear
of the pedal is depressed, oil flows to the piping on the right side of the work equipment. (When a breaker is installed,
only the front of the pedal can be used.)
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