Figure 280. Crane countershaft assembly.
Section LXXVI. CRANE INDEPENDENT BOOM HOIST SHAFT ASSEMBLY
(4)
Remove the shifting levers from the
597. General
shifter collar, at the boom hoist clutch
The independent boom hoist shaft assembly consists of
the boom hoist clutch, clutch drum, brakedrum, boom
(5)
Remove the boom hoist shaft
hoist drive chain sprocket, and the boom hoist gear.
assembly as instructed on figure 281.
The shaft mounts to the revolving frame with two
bearing unit.
b.
Disassembly.
Disassemble
the
independent boom hoist shaft assembly in numerical
598. Crane Independent Boom Hoist Shaft
sequence as illustrated on figure 282.
Assembly Removal and Disassembly
599. Crane Independent Boom Hoist Shaft
a.
Removal
Assembly Cleaning, lnspection, and
(1) Remove the crane cab assembly
Repair
(2) Remove the primary drive chain case
a.
Cleaning. Clean all parts with an approved
and drive chain (para. 196).
cleaning solvent and dry thoroughly.
(3) Remove the boom hoist drive chain
b.
Inspection and Repair. Inspect all parts for
guard (para. 197).
excessive wear or damage. Replace or
repair all defective parts.
AGO 6819A
313
