SECTION I. FUEL SYSTEM MAINTENANCE

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. GO TO NEXT PAGE