TM 1-1520-238-23
10-8
Change 4
SECTION I.
FUEL SYSTEM MAINTENANCE
10.1.
FUEL SYSTEM INSPECTION
10.1.1. Description
This task covers:
Inspection.
10.1.2. Initial Setup
Materials/Parts:
Cloth (item 52, App F)
References:
FM 10-68
TM 1-1500-204-23
TM 1-1520-238-T
TM 1-2835-213-23
TM 55-1500-344-23
TM 55-1500-345-23
TM 55-2840-248-23
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
10.2
Fuel system safety precautions observed
10.1.3. Inspection
a. Check fuel cells for tears, cuts, chafing, cracks, damaged mounting pads, or evidence of leakage
(TM 1-1500-204-23).
b. Check valves, unions, and components for looseness, rounded wrench flats, nicks, gouges,
scratches, distortion, and corrosion. Check for loose components.
(1) Negligible.
(a) Minor scratches (without burrs or raised materials) that do not penetrate through protective finish are
acceptable.
(2) Repairable.
(a) Nicks, gouges, corrosion pits (TM 55-1500-344-23), or minor surface damage not exceeding 0.040
INCH or 10 percent of material thickness (whichever is less after rework) is permissible.
(3) Not repairable.
(a) Damage exceeding repairable limits, or damage to a seal or fillet surface necessitates replacement.
(4) Touch up removed protective finish as required (TM 55-1500-345-23).
c. Check valves, unions, and other components for cracks and damaged threads. None allowed.
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