BOOM 2250 SERVICE/MAINTENANCE MANUAL
4-12
Published 07-19-16, Control # 249-01
Adjusting the Angle Indicator Sender
See Figure 4-6 for the following procedure.
Perform the following adjustment procedure at the following
times:
• At the initial installation
• After installing a new sending unit
• At least monthly when the boom, or the boom with the
luffing jib, is lowered to ground
1. Lower the boom, or the boom and luffing jib assembly,
onto blocking at ground level.
2. Scribe a line (5) through the centers of the punch
marks (4) on the boom butt (6) or luffing jib butt (1) as
shown.
3. Position a protractor level (3) along the scribed line.
4. Record the angle as shown on the protractor level.
5. Scroll to the desired angle (boom, luffing jib, or boom-to-
luffing jib) on the digital display in the operator cab.
6. The angle shown on the digital display must match the
angle recorded in step 4
, plus or minus one degree.
7. If necessary, loosen the mounting screws and rotate the
angle sending unit assembly in the mounting slots until
the reading on the digital display matches the angle on
the protractor level.
8. Securely tighten the mounting screws to lock the
adjustment.
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