TM 9-1829A, April 1944
72/100
2021-07-07
38. Disassembly
a.
Remove bezel and case:
Remove four screws holding bezel and case to frame, and remove bezel and case.
b.
Remove indicating pointer and face dial:
Using lifter (T-29 Det. 3) pry indicating pointer loose (fig. 106).
Remove two screws and lift off face dial and maximum hand assembly.
Figure 106: Removing pointer, using lifter (T-29 Det. 3)
c.
Remove pointer mechanism:
Remove maximum hand reset lever spring (fig. 107). Remove two screws (fig.
107) and lift out pointer mechanism.
Figure 107: Tachometer mechanism (dial removed) and rear view of dial
d.
Remove governor assembly:
Loosen upper spider set screw (O, fig. 105). Using thin 14 inch open-end
wrench, loosen upper ball race lock nut while holding race with screwdriver (fig. 108).
Figure 108: Loosening upper ball race lock nut