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PORTABLE PNEUMATIC IMPACT WRENCH - 14310_51
PIPE AND TUBING CUTTERS AND FLARING TOOLS - 14310_53

Aviation Boatswains Mate E - Aviation theories and other practices
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at the air lines before changing grinding wheels, needles, chisels, or other cutting or drilling bits.   The air hose must be suitable to withstand the pressure required for the tool. A leaking or defective hose should be removed from service. The hose should not be laid over ladders, steps, scaffolds, or walkways in such a manner as to create a tripping hazard. Where the hose is run through doorways, the hose should be protected against damage by the doors' edges. The air hose should generally be elevated over walkways or working surfaces in a manner to permit clear passage and to prevent damage to it.   All   portable   pneumatic   grinders   must   be equipped with a safety lock-off device. A safety lock-off  device  is  any  operating  control  that requires  positive  action  by  the  operator  before the tools can be turned on. The lock-off device must   automatically   and   positively   lock   the throttle in the OFF position when the throttle is released.   Two   consecutive   operations   by   the same  hand  are  required,  first  to  disengage  the lock-off device and then to turn on the throttle. The lock-off device should be integral with the tool. It should not adversely affect the safety or operating   characteristics   of   the   tools,   and   it should not be easily removable. Devices, such as a "dead-man control," that do not automatically and   positively   lock   the   throttle   in   the   OFF position  when  the  throttle  is  released  are  not safety lock-off devices. For detailed information on safety precautions, see Navy Occupational Safety and Health (NAVOSH) Program Manual for Forces Afloat, OPNAVINST 5100.19 (latest series). SAFETY PRECAUTIONS FOR USE WITH PNEUMATIC TOOLS—SPECIFIC In  operating  or  maintaining  air-driven  tools,  take the    following    precautionary    measures    to    protect yourself   and   others   from   the   damaging   effects   of compressed air:   Inspect the air hose for cracks or other defects; replace the hose if found defective. WARNING Before opening the control valve, see that nearby  personnel  are  not  in  the  path  of  the airflow. Never point the hose at another person.   Open   the   control   valve   momentarily   before connecting  an  air  hose  to  the  compressed  air outlet. Then, make sure the hose is clear of water and other foreign material by connecting it to the outlet and again opening the valve momentarily.   Stop  the  flow  of  air  to  a  pneumatic  tool  by closing  the  control  valve  at  the  compressed  air outlet before connecting, disconnecting, adjusting, or repairing a pneumatic tool. REVIEW QUESTIONS Q33. Identify different types of portable pneumatic power tools. Q34. What are rotary and needle sanders used for? Q35. List   the   safety   precautions   that   apply   to portable pneumatic power tools. SCREW AND TAP EXTRACTORS LEARNING OBJECTIVE: State the purpose of screw and tap extractors. Screw extractors are used to remove broken screws without   damaging   the   surrounding   material   or   the threaded hole. Tap extractors are used to remove broken taps (fig. 1-68, view A). 1-42 Figure 1-68.—Screw and tap extractors.







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