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Figure 6-20.  Termi-Twist Contact Bottoming
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TM-9-254 Gearcase Transfer M548 M548A1 (
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Figure 6-22.  Safety Wire Applications
TM 9-254 6-10. Connector Contact Pins - Continued (4) Check the connector to be certain that the new contact is alined with the adjacent contacts. Section III.  SAFETY WIRING TECHNIQUES 6-11. Safety Wiring Procedures. a. Basic Procedures. The following basic procedures should be followed when installing safety wire. (1) Safety wire must be tight after installation to prevent failure due to rubbing or vibration. (2) Safety wire must always be installed so that it tends to tighten the part, thereby counteracting the natural tendency of the part to loosen.  Determine whether the part tightens when turned to the right or to the left, as this governs the direction in which safety wire is to be threaded through the safety hole.  Figure 6-22   illustrates   typical   methods   for   safety   wiring   of   right-hand   threaded   parts.      Use   the   reverse procedure for left-hand threaded parts. (3) Safety wire must never be overstressed.  When tightening the safety wire, twist it enough to insure the securing of the part, but not so much that the wire becomes stressed to a point where it will break under a slight load. (4) Handle  safety  wire  during  installation  so  that  the  strands  do  not  become  kinked,  nicked,  or  flattened. Avoid pulling the wire around square corners or gripping it too tightly with tools. (5) Make certain safety holes are exposed as much as possible and that parts are properly tightened before installing safety wire.  However, parts should not be loosened or torqued beyond the specified values in order to improve the location of safety holes.  Do not use or drill unspecified safety holes. (6) Never  twist  the  wire  ends  off  with  pliers.    Cut  the  ends  square  to  eliminate  sharp  points,  leaving  from three to six turns after the loop.  Do not allow cut off ends to fall into the parts being safety wired. (7) Safety  wire  ends  must  be  bent  in  toward  the  item  being  safety  wired  to  prevent  possible  injury  to  the mechanic’s hands. NOTE Safety wire must never be reused. (8) Use double safety wire (fig. 6-22) in all cases except for emergency equipment. 6-16

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