6. Governor arm
8. Lock washer
10. Governor drive shaft
Figure 4-28. Engine overspeed governor related parts, exploded view.
personnel and property. Do not use near
Remove the tachometer-hourmeter (2)
open flame or excessive heat. Flash point of
from the control panel.
solvent is 100 o to 138 ° F (38 ° to 59 0 C).
(3) Use an open-end wrench to remove the
from the overspeed governor drive
Wipe the exterior of the tachometer-
hourmeter and the tachometer shaft with a cloth
b. Cleaning and Inspection.
dampened with dry cleaning solvent (fed. spec. P- D-
Clean all parts in a well-ventilated area.
(2) Wash the adapter with cleaning solvent.
Avoid inhalation of solvent fumes and
Dislodge all hardened and caked grease from the
prolonged exposure of skin to cleaning
solvent. Wash exposed skin thoroughly. Dry
Inspect the tachometer-hourmeter for
cleaning solvent (fed. spec. P-D-680) used to
broken dial glass, defaced or illegible dial
clean parts is potentially dangerous to