Aviation Mechanic - General, Airframe, and Powerplant › I. General › Task D. Fluid Lines and Fittings

AM.I.D.K6

Knowledge

Use of torque seal or similar witness techniques after installing critical fluid hose and line fittings.

Study note

Get a short, cited explanation of this element written from the FAA handbooks: the core idea, the numbers that matter, common test traps, and a quick self-check.

From the FAA library

Aviation Maintenance Technician Handbook - General p. 9-22
Chapter 9: Fluid Lines & Fittings › Clearance › Hose Clamps
Hose Clamps To ensure proper sealing of hose connections and to prevent breaking hose clamps or damaging the hose, follow the hose clamp tightening instructions carefully. When available, use the hose clamp torque-limiting wrench. These wrenches are available…
Aviation Maintenance Technician Handbook - Powerplant p. 2-32
Chapter 2: Engine Fuel & Fuel Metering Systems › Fuel System Inspection & Maintenance › Lines & Fittings
proper torque, use a hose-clamp torque wrench. If this wrench is not available, tighten the clamp finger-tight plus the number of turns specified for the hose and clamp. If the clamps do not seal at the specified torque…
Aviation Maintenance Technician Handbook - Airframe p. 12-4
Chapter 12: Hydraulic & Pneumatic Power Systems › Hydraulic Fluid Contamination › Contamination Control
reassembly procedure. Use only those seals and gaskets recommended by the manufacturer. • All parts should be connected with care to avoid stripping metal slivers from threaded areas. All fittings and lines should be installed and torqued in accordance with applicable…