the band switch shaft to bracket and gear assembly 277.
32. SERVIClNlG THE DIAL AND MASK ASSEMBLY.
a. REMOVAL.—Before the dial and mask assembly may be removed for scrvicing, the front panel must be removed as directed in Paragraph 30a. When this has been done, the dial and mask assembly is held in place by only two hex head mounting screws found on the underside of the chassis. One of these screws is under the i-f shield plate 251, (see Figure 18) and is accessible only after this plate is removed. After the two mounting screws are removed, the assembly may be lifted from the chassis and serviced.
b. DISASSEMBLY.—To remove dial mask 256, dial 257, dial index plate 258, or the band switch shaft, the taper
pin fastening the hub of the mask to the shaft must be removed. While this is being done, be certain to support the shaft so excess strain will not be placed on the center bushing and shaft. After the taper pin has been driven out, the parts may be readily removed.
c. DIAL REPLACENIENT.—Before replacing the dial, be certain that spring washer 289 between the dial hub and
the housing is mounted with its convex side towards the
The dial is slipped on over the center bushing and the teeth in the dial gear engaged with the teeth of the