Chapter D
Chapter D
Adjustment mode
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W301-0411E
2.3 Boom Angle Adjustment
2.3.1 Boom Angle Zero Adjustment
- Fully retract the boom.
- While measuring the boom angle using the sprit level type angle meter, set the boom by the boom
lowering operation to the zero adjustment condition.
- Until "Boom Angle" and "Zero adjustment value" become highlighted on the LCD (Fig. 2.1.1), press the < >
key (backward) or the < > key (forward).
Value ZERO S
PAN
Boom angle [°] 0.3 0.0 80.0
Detected boom angle Zero adjustment value
- Operate the <
> key (-) and the < > key (+) so that the detected boom angle becomes the zero
adjustment value. When the adjustment angle is reached, press the <
> key to register the adjustment
value. After the adjustment value is registered, " " is shown at the left of zero adjustment value.
2.3.2 Boom Angle Span Adjustment
- Fully retract the boom.
- While measuring the boom angle using the sprit level type angle meter, set the boom by the boom
lowering operation to the span adjustment condition.
- Until "Boom Angle" and "Span adjustment value" become highlighted on the LCD (Fig. 2.1.1), press the
< > key (backward) or the < > key (forward).
Value ZERO SPAN
Boom Angle [°] 79.5 0.0 80.0
Detected boom angle Span adjustment value
- Operate the <
> key (-) and the < > key (+) so that the detected boom angle becomes the span
adjustment value. When the adjustment angle is reached, press the <
> key to register the adjustment
value.
After the adjustment value is registered, " " is shown at the left of span adjustment value.
2.3.3 Adjustment Check
- Set to the zero adjustment condition again, and measure the boom angle using the sprit level type
angle meter.
- The adjustment is completed when the difference between the detected boom angle display and angle
gauge is within the standard tolerance. If the value is out of the tolerance, perform the zero adjustment and
span adjustment again.
