A
TS–2064
C
TS–2062
D
B–15769
24 Operation & Maintenance Manual
331/331E/334 Excavator
OPERATING PROCEDURE (Cont’d)
Excavating
Lower the blade to provide stability.
Extend the arm, lower the boom and open the bucket [A].
Retract the arm, while lowering boom and curling the
bucket [B].
Raise the boom, retract the arm and curl the bucket [C].
Rotate the upperstructure.
NOTE: Do not allow the bucket teeth to contact the
ground when swinging the upperstructure.
Keep all bystanders 20 feet (6 m) away from
equipment when operating. Contact with
moving parts, a trench cave–in or flying objects
can cause injury or death.
W–2119–0788
Extend the arm and uncurl the bucket to dump the material
into a pile or truck [D].
Avoid operating hydraulics over relief
pressure. Failure to do so will overheat
hydraulic components.
I–2220–0503
B
TS–2063
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