towing tongue). Ensure all electrical hookups fit and are
the right length.
l When parking, ensure the parking brake is
applied and wheels are chocked.
. Safety chains must be of proper size and length
and secured properly (fig. 14- 11).
PNEUMATIC TOOLS
Pneumatic tools can be used with any type or size
compressor as long as the psi and cfm requirements for
the tool are met. In the NCF, pneumatic tools are
normally stored and checked out from the central
toolroom along with the air supply hose.
When checking out a tool, you should determine if
the 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 the
correct lubrication.
PAVEMENT BREAKER/
JACKHAMMER
The pavement breaker resembles a portable rotary
rock drill/jackhammer. The pavement breaker consist
Figure 14-12.—In-line oiler.
of a piston that is moving in a chamber under air pressure
and weighs between 30 to 90 pounds. The major
working parts of a pavement breaker are shown in figure
14-13. Notice no rotational mechanism is provided and
no variation in speed is possible. This is the major
difference between the pavement breaker and rotary
rock drill/jackhammer.
Pavement breaker attachments (fig. 14-14) are the
moil point, the chisel point, the asphalt cutter, and the
clay spade.
Figure 14-11.—Air compressor.
14-10
