(2) Remove two pipes and spacers from
upper bearing.
(3) Reassembly by reversing procedure in
steps (2) and (1) above.
c. Cleaning, Inspection and Repair.
(1) Clean all parts with an approved cleaning
solvent and dry thoroughly.
(2) Visually inspect parts for excessive wear,
bends, cracks, or other defects.
(3) Repair by straightening bends, welding
cracks, or replacement of all parts damaged beyond
repair.
4-23. Radius Indicator (Boom Angle Indica-
cator)
remove three mounting capscrews and lockwashers,
then remove radius indicator from crane boom. Install in
reverse order.
b. Disassembly and Reassembly.
Figure 4-22. Boom, backstop, removal,
(1) Remove eight screws (fig. 4-23),
disassembly, reassembly, and installation.
flatwashers, and two plates to expose bearings and
from bearings, then remove pipes, seats, and springs.
Figure 4-23. Radius (boom angle) indicator, disassembly and reassembly.
4-21
