Handling Clamshell Bucket - Komatsu PC220LC -8 Operation & Maintenance Manual

ATTACHMENTS AND OPTIONS

HANDLING CLAMSHELL BUCKET

Use a clamshell bucket for digging or loading soil for side ditching and in limited areas.
Digging Method
Digging is carried out with the clamshell pushed by the boom, but when operating the bucket, raise the boom slightly
and carry out digging.
When the clamshell bucket rotates, relieve the hydraulic pressure in the bucket cylinder, then return the lever to the
HOLD position. The rotation is locked for a short time.
Precautions During Operation
It is dangerous to carry out sudden steering, sudden swings, or sudden stops when using the clamshell bucket.
Avoid such operations.
When pushing with the boom, keep the clamshell straight.
Do not swing the bucket to the side to break up or cut rocks or soil.
Do not use the bucket for driving piles or removing piles.
When the machine is not being used, open the bucket and lower it to the ground to set the bucket in a stable
position.
REMARK
Remove the clamshell bucket from the arm before transporting the machine.
Lubrication
Prepare a grease pump
1. Lower the work equipment to the ground and set it in a stable
condition before stopping the engine.
2. Using a grease gun, apply grease to the grease fittings marked
by arrows (12 places).
3. After greasing, wipe off any old grease that was pushed out.
ATTACHMENT GUIDE
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