BOOM RT9130E-2 SERVICE MANUAL
4-4 Published 11-22-2016, Control # 345-12
Extension Sequence For the Main Boom
a. The inner mid section alone extends to 75% of its
maximum, all other sections remain retracted.
b. The center mid section alone extends to 75% of its
maximum, the inner mid section remaining at 75%
of its maximum, the outer mid and fly sections
remain retracted.
c. The inner mid section alone extends to its full
extension, the center mid section remaining at 75%
of its maximum, and the outer mid and fly sections
remain retracted.
d. The center mid section alone extends to its full
extension, the outer mid and fly sections remain
retracted.
e. The outer mid and fly sections extends
simultaneously, synchronized, to their full extension.
Extension Sequence for the Main Boom with
Boom Extensions or Offset Jibs
There are no discrete boom extension or jib capacity charts
for boom lengths less than 100% extension of the center mid
section. Therefore, to reduce telescoping time, the following
Automatic mode extension sequence is activated whenever
an offset jib load chart is selected by the operator:
a. The inner mid section alone extends to its full
extension, all other sections remaining retracted.
b. The center mid section alone extends to its full
extension, the outer mid and fly sections remaining
retracted.
c. The outer mid and fly sections extends
simultaneously, synchronized, to their full extension.
The boom retraction sequences are the reverse of the above
extension sequences.
Rated Boom Lengths
The boom carries capacity ratings according to the boom
section extension proportions shown in the table titled Boom
Section Extension Proportions (again shown as a
percentage of extension of each section).
Capacities at Intermediate Boom Lengths
It is not mandatory that only the specified discrete boom
lengths are utilized for lifting, and intermediate boom lengths
will be usable. The allowable capacities at intermediate
Boom Fully Retracted
Inner mid Extends to 75%
Center Mid Extends to 75%
Inner Mid Extends to 100%
Center Mid Extends to 100%
Outer Mid and Fly Section Extend Synchronized Until Fully Extended
6081
FIGURE 4-2
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