8 — English
OPERATING THE IMPACT WRENCH
See Figures 4 - 5, page 9.
CAUTION:
The metal surface may become hot during use. Avoid
contact with it to avoid possible burn injury.
Proper fastening torque may be determined by the kind of
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.
Hold the tool pointed straight at the nut or bolt.
Depress the switch and fasten for the proper fastening
time.
Remove the impact wrench from the nut or bolt.
Check the torque with a torque wrench.
OPERATION
notice:
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.
notice:
After the head of a nut or bolt has seated, additional im-
pacting will increase the chance of shearing bolts, nuts,
sockets or tearing into wood.
MAINTENANCE
WARNING:
When servicing, use only identical replacement parts.
Use of any other parts may create a hazard or cause
product damage.
WARNING:
Always wear eye protection with side shields marked to
comply with ANSI Z87.1, along with hearing protection.
Failure to do so could result in objects being thrown into
your eyes and other possible serious injuries.
GENERAL MAINTENANCE
Avoid using solvents when cleaning plastic parts. Most
plastics are susceptible to damage from various types of
commercial solvents and may be damaged by their use. Use
clean cloths to remove dirt, dust, oil, grease, etc.
WARNING:
Do not at any time let brake fluids, gasoline, petroleum-
based products, penetrating oils, etc., come in contact
with plastic parts. Chemicals can damage, weaken or
destroy plastic which may result in serious personal injury.
Electric tools used on fiberglass material, wallboard, spackling
compounds, or plaster are subject to accelerated wear and
possible premature failure because the fiberglass chips and
grindings are highly abrasive to bearings, brushes, commu-
tators, etc. Consequently, we do not recommend using this
tool for extended work on these types of materials. However,
if you do work with any of these materials, it is extremely
important to clean the tool using compressed air.
LUBRICATION
All of the bearings in this tool are lubricated with a sufficient
amount of high grade lubricant for the life of the unit under
normal operating conditions. Therefore, no further lubrication
is required.
POWER SUPPLy CORD REPLACEMENT
If replacement of the power supply cord is necessary, this
must be done by an authorized service center in order to
avoid a safety hazard.
BRUSH REPLACEMENT
See Figure 6, page 9.
The impact wrench has externally accessible brush assem-
blies that should be periodically checked for wear.
Unplug the impact wrench.
With a flat head screwdriver, remove the brush caps. The
brush assembly is spring loaded and will pop out when
you remove the brush cap.
Remove the brush assembly (brush and spring). Check
for wear. If worn, always replace in pairs. Do not replace
one side without replacing the other.
Replace the brush assembly.
Replace the brush cover and tighten with a screwdriver.
Do not overtighten.
NOTE: FIGURES (ILLUSTRATIONS) START ON PAGE 9 AFTER SPANISH LANGUAGE SECTION.
