Komatsu PC450-8 Operation & Maintenance Manual page 377

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ATTACHMENTS ANDD OPTIONS
ATTACHMENT REMOVAL AND INSTALLATION
Attachment Removal
1. Lower the attachment to the ground and stop the engine.
2. Turn the starting switch to the ON position (B), then set the
lock lever to the FREE position (F).
3. After carrying out Step 2, operate each work equipment
control lever and attachment control pedal fully to the front,
rear, left, and right 2 or 3 times within 15 seconds to
release the internal pressure in the hydraulic circuit.
4. Set the lock lever to LOCK position (L).
5. Loosen slowly oil filler cap (F) on top of the hydraulic tank
to eliminate the internal pressure in the hydraulic circuit.
MACHINE READY FOR ATTACHMENT
6
6
6-17

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Pc450lc-8

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