Installing and Removing Sockets, Impact Time

INSTALLING AND REMOVING SOCKETS

Use only sockets designed for impact wrenches. Always se-
lect the correct size impact socket for nuts and bolts. Using	DRIVE SHANK
the wrong size socket may damage the nut or bolt and cause

	the fastening torque to be inaccurate or inconsistent.	SOCKET
	n Unplug the wrench.	SOCKET
	n Unplug the wrench.
	n Push the socket onto the drive shank until the detent pin
	locks it into place.
	n To remove the socket, pull it away from the drive	TO
	shank.	TO
	OPERATING THE IMPACT WRENCH	INSTALL
	OPERATING THE IMPACT WRENCH
	See Figure 5.	TO
		TO
	Proper fastening torque may be determined by the kind of	REMOVE
	bolt, the size of the bolt or the material or the workpiece. It
	is helpful to perform a test operation to determine the proper
	fastening time for the nut or bolt you are using. While per-
	forming the test, make note of the speed selection.
	n Hold the tool pointed straight at the nut or bolt.
	n Depress the switch and fasten for the proper fastening
	time.
	n After fastening, always check the torque with a torque
	wrench.
	NOTE: Do not use this tool to install lug nuts on wheels
	without a torque limiting device. Doing so could result in
	galled or broken lugs.
	IMPACT TIME
	Many variables exist that will cause the available torque of
	the fastener to vary considerably. The optimum impact time
	is approximately 6 seconds.
	NOTE: Using a universal joint or extension bar may reduce
	the fastening force of the impact wrench and require longer
	fastening time.

Fig. 4

Fig. 5