Clamp Inspection and Installation

Clamp Inspection and Installation

1. Installation

   • Don't permit wire or harness to have frictional contact with another object
   • Do not permit wire or harness to contact sharp edges
   • Do not subject harness to sharp bends
   • Do not permit chafing
   • Prevent mechanical strain
   • Prevent excessive movement in high vibration areas
   • Permit re-assembly to equipment and terminal boards
   • Permit replacement or repair of individual wires without removing entire harness
   • Clamp must not be installed on a wire harness where wires cross each other
   • Clamp must not be installed on a repair
   • Clamp must not be installed on lacing tape or platic tie wrap
   • Clamp must not be installed on a shield ground wire assembly
   • Clamp must not be installed on the bend of a coax cable if the bend is less that 6 inches

2. Appropriate Support Clamp Installation

   • Size of clamp must match wire harness size
   • Max diameter of wire harness supported with nylon clamp is 1.25 inches
   • Properties of clamp must match the environment its in
   • No pinching of any cables
   • Clamp cushion must enclose whole harness
   • Clamp must be installed 90 degrees to the harness routing
   • Mounting screw must be above wire harness

3. Correct Size

   • Visually fits
   • Put clamp around harness and attach to attachment point. You should be able to feel if it fits or not
   • All wires are contained in the cushion and no wires are pinched
   • Torque the screw until clamp tabs are almost in contact
   • Pull with moderate force on wire harness, clamp must not let the harness move laterally or longitudinally

4. Sufficient Slack

   • Connectors can be connected and disconnected easily
   • Strain is not put on the wire, cable or harness
   • Strain is not put on the termination of a wire or cable
   • Strain does not pull a connector grommet out of its shape
   • Hinge joints can move freely
   • Equipment can be removed easily
   • Expansion of the airframe does not put strain on the wire, cable or wire harness