TM 9-2350-230-12
Malfunction
Probable cause
Corrective action
TURRENT TRAVERSING
MECHANISM - Continued
100.
Traversing servo
a. Defective internal fan in
a. Notify support maintenance.
motor overheats
traversing servo motor.
during electric
b. Remove obstructions to
operation
b. Excessive load
operation.
101.
Traversing
Damaged gear or bearing
Notify support maintenance.
mechanism noisy.
102.
Turret does not
Defective manual drive
Notify support maintenance.
traverse when
mechanism.
rotating manual
control handle.
ELEVATING MECHANISM
a. Remove obstruction.
103.
Operation sluggish
a. Gun or gun shield internal
or erratic in man-
or external obstruction.
ual or power mode.
b. Inspect brushes and re-
b. Worn servo motor brushes
or defective servo motor
place if worn or replace
motor if defective (figs.
10-10, 11).
c. Notify support maintenance.
c. Damaged or improperly
installed mechanism.
d. Defective magnetic clutch
brush.
e. Notify support maintenance.
e. Defective gun trunnion
a. Notify support maintenance.
104.
Manual handwheel
a. Sheared spring pin in
turns freely, but
handwheel shaft.
mechanism is
b. Notify support maintenance.
inoperative
b. Defective reverse lock
(No-Back) clutch or
magnetic clutch.
105.
Noisy operation
Incorrect shimming or
Notify support maintenance.
a. Replace brushes or motor
106.
Failure to operate
a. Servo motor brushes worn
in power mode
or motor defective
(figs.
8-35