Section LXXIV. CRANE HOIST DRUM SHAFT
590. Crane Hoist Drum Shaft Assembly
Removal and Disassembly
The crane hoist drum shaft is mounted uppermost on
the revolving frame between the countershaft and the
horizontal reversing shaft and is gear driven from the
horizontal reversing shaft. It is secured to the frame by
Remove the crane cab assembly
two bearing assemblies which are bolted to the frame.
The cable drums are held stationary by the brakes until
Remove the primary drive chain case
the individual clutch assembly is engaged, which in turn
rotates the clutch and brake drum. The hoist drum shaft
Remove the gear and chain guards
assembly can be removed as a unit without disturbing
the countershaft or horizontal reversing shaft.
Remove the brake band assemblies
Figure 277. Crane hoist drum shaft assembly, removal and installation.