Rev. 03/08/04
775-6634A
3
PLEASE REVIEW ALL WARNING INSTRUCTIONS PRIOR TO OPERATION. SAVE THIS MANUAL FOR FUTURE REFERENCE.
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. Low pressure (under 90
psig; 6.2 bar) reduces the speed of all air tools.
Low air pressure not only wastes time, but also
costs money. 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 American Thread. 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 NAPA 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 con-
nection 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.
OPERATING INSTRUCTIONS
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
position 4 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, 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 1/2" 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.
INSTRUCTION MANUAL & PARTS BREAKDOWN
Air Inlet
Regulator
Valve
Nipple
Содержание Evercraft 775-6634A
Страница 12: ...Rev 03 08 04 775 6634A 12...
