Komatsu 15045 Operation & Maintenance Manual page 261

OPERATION
DO NOT "Sweep" with the loader attachment, illust.
(Z 10369), as this may result in severe damage on swing gear
components.
DO NOT use the bucket clam for loosening or removing
anchored rocks or other solid objects (illust. Z 19984 and
Z 19985), since such operations may result in severe damage
to the clam pivot bearings.
CAUTION
CAUTION
3.14 WORKING INSTRUCTIONS
261