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Section II. SERVICE UPON RECEIPT OF MATERIEL - TM-9-1270-212-14-P0129
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TM-9-1270-212-14-P Fire Control Subsystem Helmet Directed XM128 P/N 2277716-00 NSN 1270-00-122-9449 Manual
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Table 3-3. Preventive Maintenance Checks and Services Electrical
TM 9-1270-212-14&P
Table 3-2. Preventive Maintenance Checks and Services - Mechanical
D - During operation
A - After operation
B - Before operation
time required: 0.1
time required: 0.1
time required: 0.5
Interval and
Item to be inspected
sequence number
Work time
procedure
(M/H)
A
B
D
Helmet sight assemblies
1
Inspect for damage (bent or broken parts).
0.2
Inspect for evidence of misalignment.
Inspect for dirty optics.
Perform sight unit retract test (fig. 3-1).
2
Linkage assemblies
0.2
Inspect for damage (bent or broken parts).
Inspect rails for nicks, foreign material, or corrosion. Wipe rails with
lint- and dust-free cloth.
Electronic interface assembly and cabling
3
0.1
Inspect for physical damage to cabling and insure that connectors are
secure.
4
Linkage assemblies
0.1
Check for unusual feel or binding when linkage is attached to helmet.
5
Linkage assemblies
0.1
Remove linkage arm assemblies from helmet receptacle and place in
stow position (fig. 2-10).

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