C11, TM 9-2350-230-12
TABLE 8-17. PREVENTIVE-MAINTENANCE CHECKS AND SERVICES-CONTINUED
QUARTERLY SCHEDULE
ORGANIZATIONAL MAINTENANCE
Sequence
Item to be inspected
No.
Procedure
Reference
152MM GUN-LAUNCHER AND MOUNT -
Continued
49
Breech Assembly -
c.
Loading tray and ejector.
Continued
21
d. Detent and trigger lever.
23
e. Obturator gasket
50
Electrical Harness
Check for proper operation and condition,
and Limit Switches
13, 2
51
Firing Mechanism
Clean contact of firing mechanism
with rough cloth or steel wool,
NOTE.
Service requirements for the firing mechanism are based
52
Carrier Cover
Inspect and clean.
Vent Plug
52.1
Detent, Check Valve,
Service requirements for these items
Gun Tube, Coupling,
are based on usage rather than time interval.
and Related Parts
CAUTION: Avoid damaging air cylinders. which are under very high pressure.
7.62MM MACHINE GUN
Checks 53 through 57 deleted. See T.M 9-1005-233-25.
SIGHTING AND FIRE CONTROL
NOTE. The purging and charging techniques described in TM 750-116 will be
performed on the XM44, M47 and M48 periscopes, M119 Telescope, and M149
Mount when condensation in the instrument is evident or every 90 days. XM44E
Series Periscope requires purging at any time head and body are separated.
58
M13A1C Quadrant
a. Inspect for general condition and com-
dices; clean as required. Check that level
vial rotating cover is in a protective position
when quadrant is not in use.
b. Check for tightness of screws, binding,
and cover. Check adjustment.
59
XM44 Series Periscope
a. Check synchronization and alignment ac-
curacy of periscope with 152MM gun-launcher.
8-81