TM 1-1520-238-23
8-4
SECTION I. ENGINE INSTRUMENTS MAINTENANCE
8.1.
ENGINE INSTRUMENTS INSPECTION
8.1.1. Descriptio
This task covers:
Inspection.
8.1.2. Initial Setup
Personnel Required:
68X
Armament/Electrical System Repairer
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
2.2
Access doors opened and covers, panels,
and fairings removed as necessary
8.1.3. Inspection
a. Check engine instruments and instrument panel mounting areas for dents, nicks, and cracks. None
allowed.
b. Check front panels of instruments for dents, nicks, and cracks. None allowed.
c. Check instruments and their front panels, covers, switches, pointers, and knobs for loose installation.
None allowed.
d. Check instruments for loose or missing hardware. None allowed.
e. Check indicator case for stripped or damaged threads. Acceptable thread damage cannot exceed 50
percent of one thread.
f. Check pointers on instrument faces for wear and damage. None allowed.
g. Check instrument scales for wear, illegibility, distortion, and discoloration. None allowed.
h. Check electrical connectors for loose installation. Inspect for loose or broken lockwiring (QA). None
allowed.
i. Check instruments for fogging and moisture. None allowed.
j. Check lamp boards for cracks, loose or broken pins, and broken lamp filaments. None allowed.
k. Secure opened doors; install removed covers, panels, and fairings (para 2.2).
END OF TASK
