3-44 OM 28Z3 US – Edition 2.0 * * 28Z3b340.fm
Operation
3.25 Changeover valve for control pattern’’B’’(option)
Important!
Possible loss of machine control. Changing the control valve mode selection posi-
tion will reverse the function control of the hand levers. The left hand lever controls
the boom, not the stick. The right hand lever controls the stick.
• Confirm the selected mode before starting the engine to avoid uninten-
tional movement of the stick or boom.
• Always secure wing nut J on the directional valve's changeover lever.
Left-hand side control lever
Right-hand side control lever
Directional valve position
The directional valve is located at the left behind the seat.
Fig. 52: Directional valve
Fig. 53: Left-hand side control lever
D
C
A
B
2
Position Lever Function
A ☞ Forward ➥ Boom is lowered
B ☞ To the right ➥ Upper carriage rotates to the right
C ☞ Backward ➥ Boom is raised
D ☞ To the left ➥ Upper carriage rotates to the left
Fig. 54: Right-hand side control lever
H
G
E
F
3
Position Lever Function
E ☞Forward ➥ Stick is extended
F ☞ To the right ➥ Dumps bucket
G ☞ Backward ➥ Stick is retracted
H ☞ To the left ➥ Fills bucket
Fig. 55: Directional valve position
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