towing tongue). Ensure all electrical hookups fit and arethe right length.l When parking, ensure the parking brake isapplied and wheels are chocked.. Safety chains must be of proper size and lengthand secured properly (fig. 14- 11).PNEUMATIC TOOLSPneumatic tools can be used with any type or sizecompressor as long as the psi and cfm requirements forthe tool are met. In the NCF, pneumatic tools arenormally stored and checked out from the centraltoolroom along with the air supply hose.When checking out a tool, you should determine ifthe tool needs an in-line oiler. If an in-line oiler (fig.14- 12) is needed to provide lubrication to the tool,follow the tool manufacturer’s recommendation for thecorrect lubrication.PAVEMENT BREAKER/JACKHAMMERThe pavement breaker resembles a portable rotaryrock drill/jackhammer. The pavement breaker consistFigure 14-12.—In-line oiler.of a piston that is moving in a chamber under air pressureand weighs between 30 to 90 pounds. The majorworking parts of a pavement breaker are shown in figure14-13. Notice no rotational mechanism is provided andno variation in speed is possible. This is the majordifference between the pavement breaker and rotaryrock drill/jackhammer.Pavement breaker attachments (fig. 14-14) are themoil point, the chisel point, the asphalt cutter, and theclay spade.Figure 14-11.—Air compressor.14-10
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