55M4000BCE00 REV A
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3.5 Step #13: “Unloaded boom deflection”
This procedure is used to add an allowance into the calculation of the hook radius to
compensate for natural main boom deflection.
This procedure should only be used with machine configurations on outriggers or on
crawlers.
No known test weight is required to carry out this calibration
,
the weight of the hook
block and any slings, shackles etc. that are used will be sufficient.
1)
Use
“
”
or
“
”
to highlight “Unloaded boom deflection” and press
“
”
to enter.
The display will show the current boom length and a target boom length for calibration.
With the hook block suspended, telescope the boom out to the target length specified
on the display, this is normally the maximum length available for the duty so be sure to
check that the hook block does not foul the boom tip and that the boom is at a high
enough angle to safely permit maximum extension.
When the boom is at the desired extension the display will change to show the current
boom angle followed by a target boom angle for calibration, normally 60°. Adjust the
boom angle to the target angle, when the boom is at the correct angle for calibration
the display will change to show:
Содержание i4000
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