ATTACHMENTS AND OPTIONS
WARNING
• Read the instruction manual for the attachment and the sections of this manual related to attach-
ments and options.
• Installing any attachment or optional equipment is related to the safety issue. Contact your Komat-
su distributor before installing.
• Installing attachments or optional equipment without consulting your Komatsu distributor may not
only cause problems with safety, but may also have an adverse effect on the operation of the ma-
chine and the life of the equipment.
• Any personal injuries, product failures, physical loss or damage resulting from the use of unauthor-
ized attachments or parts will not be the responsibility of Komatsu.
INSTALL ATTACHMENT
WARNING
When the long arm is equipped, if the bucket is drawn to the machine body, the arm interferes with the
body. Operate the long arm carefully.
When the boom is fully lowered during the oblique digging, the boom interferes with the undercarriage.
Operate the boom carefully.
Categories of use
Select a proper attachment for each use.
General digging
Digging or loading sand, gravel, clay etc.
Light duty digging
Digging and loading dry and loose sandy soil, or muddy soil.
Loading
Loading of dry and loose earth.
REMARK
For digging or loading hard soil or soft rock, it is recommended that the strengthened bucket with high durability
and high wear resistance be employed.
Combination of attachments
NOTICE
1. Bucket size based on ISO 7451, heaped material with a 1:1 angle of repose.
2. Max Bucket Volume/Weight are for reference only and are not necessarily available from the factory.
3. Table is based on General Purpose buckets and both conditions of Volume (m
3
) and Weight (kg) must not be
exceeded.
4. Please consult with your distributor for the correct selection of buckets and attachments to suit the applica-
tion. The recommendations are given as a guide only, based on typical conditions.
PC490-11 (6.7 m Boom)
PC490-11 (7.1 m Boom)
Max
Bucket
Volume/
Weight
ISO
1-Piece Boom 1-Piece Boom
2.4 m 2.9 m 2.4 m 2.9 m 3.4 m 4.0 m 4.8 m
ATTACHMENTS AND OPTIONS ATTACHMENTS AND OPTIONS
6-34
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