GENERAL MAINTENANCE PROCEDURES CONT.

TM 10-1670-299-20&P TO 14D1-2-470-2 NAVAIR 13-1-41 9 Check the engagement of the installed snap fastener components with the opposite mating components with the opposite mating components to insure the open and closed snapping process is accomplished without hindrance. If the snap engaging process cannot be accomplished without difficulty, replace the opposite mating snap fastener components using the procedures in steps 1 through 3, above. NOTE A durable snap fastener assembly will open and close from any direction. A pull-the-dot snap fastener assembly will open and close from only one direction. A pull-the-dot snap fastener assembly will open and close from only one direction. 10 As required, remove the chuck and die from the applicable snap fastener tools by reversing the procedures in step Z, above. (d) Hand- or foot-operated press method. Installation of durable or pull-the-dot snap fastener assemblies by hand- or foot-operated press can be accomplished by using the procedures in paragraph 1, above, except the chunk and die will be secured within the applicable press assembly using the available locking screws. (e) Installing a lift-the-dot snap fastener assembly. 1. Hand-held method. (a) Using the specifics in Table 2-4, ascertain the size chuck and die required the fastener socket and clinch plate or stud and washer. As applicable. (b) Place the selected chuck in the open end of the holder and secure the chuck in place using the locking screw located on one side of the holder. Further, place the appropriate die into the anvil. (c) Fit the socket (with prongs facing down) or stud (with barrel facing down) on the lower end of the chuck. Place the clinch plate or washer, as applicable, on the die. (d) Position the material over the clinch plate or washer, as applicable. (e) Aline the socket prongs with the pre-cut holes in the material or the barrel of the stud at the center of the material-covered washer, as applicable. With an applied strike from a mallet, clinch the two snap fastener components to the material. 2-37