SX670A
4
Rev. 02/09/06
Air Supply...
Tools of this class operate on a wide range of air pressures. It is
recommended that air pressure of these tools measures 90 PSI at
the tool while running free. Higher pressure (over 90 psig; 6.2
bar) raises performance beyond the rated capacity of the tool,
which will shorten tool life because of faster wear and could
cause injury.
Always use clean, dry air. Dust, corrosive fumes and/or water
in the air line will cause damage to the tool. Drain the air
tank daily. Clean the air inlet filter screen on at least a weekly
schedule. The recommended hookup procedure can be viewed in
the above figure.
The air inlet used for connecting air supply, has standard 1/4"
NPT. Line pressure should be increased to compensate for
unusually long air hoses (over 25 feet). Minimum hose diameter
should be 3/8" I.D. and fittings should have the same inside
dimensions and be tightly secured.
Lubrication...
Lubricate the air motor daily with quality air tool oil. If no air line
oiler is used, run a teaspoon of oil through the tool. The oil can
be squirted into the tool air inlet or into the hose at the nearest
connection to the air supply, then run the tool. The amount of oil
to be used is 1 ounce. Overfilling will cause a reduction in the
power of the tool.
Operation...
The air regulator knob can be used as an air throttle, if there are
no other means of regulating air. Turn the air regulator knob all
the way to left (counterclockwise) for maximum power.
The air regulator can be used to adjust torque to the
approximate tightness of a known fastener.
To set the tool to desired torque, select a nut or screw of known
tightness of the same size, thread pitch and thread condition as
those on the job. Turn air regulator to low position (clockwise),
apply wrench to nut and gradually increase power (turn
regulator to admit more air) until nut moves slightly in the
direction it was originally set. The tool is now set to duplicate
that tightness - note regulator setting for future use. When
tightening nuts not requiring critical torque values, run nut up
flush and then tighten an additional one-quarter to one-half
turn (slight additional turning is necessary if gaskets are being
clamped). For additional power needed on disassembly work,
turn regulator to its fully open position. This impact wrench is
rated at 3/4" USS bolt size. Rating must be down graded for
spring U bolts, tie bolts, long cap screws, double depth nuts,
badly rusted conditions and spring fasteners as they absorb
much of the impact power. When possible, clamp or wedge the
bolt to prevent springback.
Soak rusted nuts in penetrating oil and break rust seal before
removing with impact wrench. If nut does not start to move in
three to five seconds, use a larger size impact wrench. Do not
use impact wrench beyond rated capacity as this will drastically
reduce tool life.
Operating Instructions • Warning Information • Parts Breakdown
Limited Warranty...
SUNEX INTERNATIONAL, INC. WARRANTS TO ITS CUSTOMERS THAT THE COMPANY’S SUNEX TOOLS
®
BRANDED
PRODUCTS ARE FREE FROM DEFECTS IN WORKMANSHIP AND MATERIALS.
Sunex International, Inc. will repair or replace its Sunex Tools
®
branded products which fail to give satisfactory service due to defective
workmanship or materials, based upon the terms and conditions of the following described warranty plans attributed to that specific product.
This product carries a ONE-YEAR warranty. During this warranty period, Sunex Tools will repair or replace at our option any part or unit
which proves to be defective in material or workmanship.
Other important warranty information...
This warranty does not cover damage to equipment or tools arising from alteration, abuse, misuse, damage and does not cover any repairs or
replacement made by anyone other than Sunex Tools or its authorized warranty service centers.The foregoing obligation is Sunex Tools’ sole
liability under this or any implied warranty and under no circumstances shall we be liable for any incidental or consequential damages.
Note:
Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion
may not apply to you. Return equipment or parts to Sunex Tools, or an authorized warranty service center, transportation prepaid. Be
certain to include your name and address, evidence of the purchase date, and description of the suspected defect.
If you have any questions about warranty service, please write to Sunex Tools. This warranty gives you specific legal rights and you may also
have other rights which vary from state to state. Repair kits and replacement parts are available for many of Sunex Tools products regardless
of whether or not the product is still covered by a warranty plan.
Shipping Address:
Sunex Tools • 315 Hawkins Rd. • Travelers Rest, SC 29690
Mailing Address:
Sunex Tools • P.O. Box 4215 • Greenville, SC 29608
SX670A_om_020609.indd 4
3/6/06 3:53:29 PM
