that the boom hoist brake, which is spring
set, cannot be released and will keep the
boom hoist brake assembly. Be sure the
boom from falling when the jaw clutch is
to hold the adjusting screw in position.
The control system is now adjusted so
Section XXI. CRANE BOOM, PULLEYS, AND PULLEY BUSHINGS
The boom for crane consists of two sections. The
power boom section is connected by two footpins to the
revolving frame. The upper boom section carries the
(1) Remove all reeving from the crane boom.
boom point sheave assembly. The boom is of welded
(2) Remove the crane boom from the
Figure 121. Boom hoist brake assembly.