A
B–21923
1
3
5
7
P–16624
B
B–21924
1
3
5
7
P–16623
331/331E/334 Excavator
Operation & Maintenance Manual
11
HYDRAULIC CONTROLS
ISO Control Pattern
21.
The work equipment (backhoe and upper structure swing)
is operated by using the left and right control levers
(joysticks) [A] & [B].
Left Control Lever
The left lever is used to operate the arm and to swing the
upperstructure [A]:
1. Arm out.
2. Arm out and slew right.
3. Slew right.
4. Arm in and slew right.
5. Arm in.
6. Arm in and slew left.
7. Slew left.
8. Arm out and slew left.
Right Control Lever
The right lever is used to operate the boom and bucket [B].
1. Boom lower.
2. Boom lower and bucket dump.
3. Bucket dump.
4. Boom raise and bucket dump.
5. Boom raise.
6. Boom raise and bucket curl.
7. Bucket curl.
8. Boom lower and bucket curl.
AVOID INJURY OR DEATH
Before leaving the machine:
• Lower the work equipment to the ground.
• Lower the blade to the ground.
• Stop the engine. Remove the key.
W–2196–0595