TM 5-6675-328-14
c. Tag and remove three wires from motor.
d. Remove screws holding motor mount to motor mount bracket.
e. Remove motor and its mount and place on workbench.
NOTE
The right axis motor shaft has a worm gear; the left axis motor shaft has a miter gear.
f. Loosen two setscrews holding gear on motor shaft. Remove gear and retain.
g. Remove screws holding motor mount to motor and remove mount.
h. Install motor mount on new motor.
i. Install gear on new motor shaft but do not tighten setscrews.
j. Attach motor mount to motor mount bracket and secure with screws.
k. Adjust mesh of worm gear (right axis motor) or miter gear (left axis motor) as follows:
(1) Worm gear. Position worm gear on motor shaft so that worm gear is centered on spur gear and tighten
setscrews.
(2) Miter gear.
(a) Remove all slack from motor shaft by pushing shaft toward the motor.
(b) Mesh the two miter gears and position the miter gear on the motor shaft to give 0.003 to 0.005 in.
(0.76 to 0.127 mm) backlash between the two gears.
(c) Tighten the setscrews and recheck the backlash.
l. Attach three wires to motor.
m. Plug in power cord.
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