Komatsu PW130ES-6K Operation & Maintenance Manual page 265

INTRODUCTION OF ATTACHMENTS AND EXTENDING MACHINE SERVICE LIFE
SPECIAL OPERATIONS
The rotating arm and 2-piece boom facilitate the following special
operations.
PIT EXCAVATION FOR FOUNDATIONS OF BUILDINGS
Shafts with vertical walls can be excavated in all directions and
soil can be removed from around sheet piles.
SIDE DITCHING
The direction of the bucket teeth can be altered to facilitate the
excavation of parallel sided ditches.
OPERATION ON SLOPES
Vertical ditches can be dug on sloping surfaces.
DITCH DIGGING
Combination of rotating arm and upper boom make possible the
precise digging of offset ditch.
STATIONARY DIGGING
The excavation of trenches for main and branch water supply and
drainage pipes can be done without changing the machines posi-
tion.
LIFTING SPOIL
The rotating arm enables working from all directions. Even if there
is a structure between the excavator and the bucket the work can
be done without hitting it.
BOX DIGGING
Perfect corners can be dug without having to change position of
excavators.
SCRAPING
With bucket reversed the excavator can scrape faces upward.
REPLACEMENT OF BUCKET
Stop the machine on a firm, flat surface. When performing work
with another person, make clear signals to each other and work
carefully for safety's sake.
1. Select a flat surface and stabilize the bucket.
2. After removing the stop bolt and nut for each pin, extract pins
A and B.
After removing the pins, make sure that they do not become
G
contaminated with sand or mud and that the seals of bushing
on both sides do not become damaged.
264
OPTIONS, ATTACHMENTS
Bucket
cylinder
Link
AM090950A
Arm