TM 9-1829A - Disassembly; Figure 106: Removing Pointer, Using Lifter (T-29 Det. 3); Figure 107: Tachometer Mechanism (Dial Removed) and Rear View of Dial; Figure 108: Loosening Upper Ball Race Lock Nut

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