TM 9-2350-230-12, C8
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
TURRET (EXTERIOR)
20
101
Exterior Stowage
Check condition and stowage of exterior basic-issue items
21
Gun-Launcher Tube
a.
Wipe dry before firing
22
102
b.
Check for powder fouling, corrosion, and other
damage.
c.
Check equipment log book (Form 2408-4)
App. I
23
103
Bore Evacuator
Check for dents and improper seals. Assure that bore
Chamber
evacuator is secure to tube.
104
Deleted
23.1
104.1
Grenade launcher
Check wiring harness and connectors. Check operation of
mount (thru veh.
SN 699
if defects are found.
23.2
104.2
Grenade launcher
On vehicles SN 700 and above, check for bent, dented,
tubes (eff. Veh.
corroded or damaged tubes. Check operation of
SN 700)
solenoidsNotify organizational maintenance if defects
are foundClean tubes and leave a light film of oil on
inside of tube. Assure solenoids are left oil-free.
CAL. .50 MACHINE GUN
WARNING: Clear machine gun before initiating inspection .
24
Barrel
Assure that bore and chamber are dry and free of
obstruction.
25
Back Plate Assy
Assure positive functioning of latch, latch lock, and
safety.
26
Cover Group
Assure positive engagement of latch
27
Feed Mechanism
Ascertain free movement of latch and feed mechanisms.
105
Retracting Slide
Operate slide to assure freedom of movement
Group Assy.
28
Headspace and
Check and/or adjust
Timing
COMMANDER'S CUPOLA
29
106
Hatch Covers and
Check to insure split hatch covers lock securely in all
Seals
positions and have a watertight seal.
107
Vision Blocks
Inspect for signs of ineffectual sealing, clouding,
objectionable scratches, or pits on surface of glass.
29.1
1071
Slip Ring and
Inspect. Clean as necessary with dry cloth.
Brushes
4-5