TM 9-2350-230-12, C6
Table 4-1. PREVENTIVE-MAINTENANCE CHECKS AND SERVICES
INTERVAL AND
SEQUENCE
B - BEFORE OPERATION D - DURING OPERATION A - AFTER OPERATION
REFERENCE
B
D
A
ITEM TO BE INSPECTED
PROCEDURE
30
108
Traverse Mechanism
Rotate full 360 degrees manually to determine that ring
gear is free and backlash is not excessive. Power
traverse cupola 360 degrees in each direction with
traverse mechanism switch assembly buttons on machine
gun spade grips and rotation switch on cupola control
assembly. Cupola should not coast after release of
buttons or rotation switch.
TURRET (INTERIOR)
NOTE Check selector knob setscrews.
31
109
Loader's Hatch
Cover
Hatch cover must lock securely in open and closed
positions.
32
Turret Seats and
Check for ease of operation and adjustment Inspect
A, C, F, Fig.
Pads
cushions and pads for secure mounting and serviceable
2-20
condition.
33
110
Turret Traverse
Check for effective operation
Lock
34
Ammo Racks and
Check pin safety clips securing vertical ammo rack and
Protective
screens to turret ring to be sure they are installed.
Screens
35
111
Ammo Racks
Check ammo arms and catches for shell holding tension
Determine if shell pads are present and properly
installed.
112
Stowage Boxes
Clean miscellaneous boxes of corrosion and debris
35.1 67.1
112.1
Floor Access
Clean debris from under turret floor as necessary
36
Fuel Tank(Center)
37
113
Interior Basic-
Check condition and stowage.
Issue-Items
38
114
Turret Ventilating Fan
Check operation
39
115
Dome Lights
Check operation. Replace lamps if defective
40
116
Turret Traverse
With vehicle on level ground, traverse turret full 360
Mechanism
degrees manually and with power. Effort required to
manually traverse should be uniform and must not
have over 1-1/2 mils of backlash. If manual control shaft
binds, coat with PL.
4-6