Evercraft Air Tools 776-6634 Guide D'utilisation page 3

INSTRUCTION MANUAL & PARTS BREAKDOWN
Whip Hose
Do Not In stall
Quick Coupling Nipple
Here
Leader Quick Coupler
Hose
Air Supply:
Tools of this class operate on a wide range of air
pres sures. It is recommended that air pressure of
these tools mea s ures 90 PSI at the tool while
running free. Low pressure (under 90 psig; 6.2 bar)
re d uc e s the speed of all air tools. Low air pressure
not only wastes time, but also costs money. Higher
pres s ure (over 90 psig; 6.2 bar) raises performance
beyond the rated capacity of the tool, which will
short e n tool life be c ause 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
rec om mend ed hookup pro ce dure can be viewed in the
above figure.
The air inlet used for con nect ing air supply has
stan dard 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 quality air tool oil.
If no air line oiler is used, run a 1/2 oz. of oil through
the tool. The oil can be squirted into the tool air inlet
or into the hose at the nearest con nec tion to the air
supply, then run the tool. Overfilling will cause a
re d uc t ion in the power of the tool.
Operating Instruction:
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
776-6634
Nipple
Oiler Regulator
Figure 1
3
Air Supply
Filter
Regulator Valve
Drain Daily
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.
Troubleshooting:
Other factors outside the tool may cause loss of
power or erratic action. Reduced compressor
output, excessive drain on the air line, moisture or
restrictions in air pipes or the use of hose
connections of improper size or poor conditions
may reduce air supply. Grit or gum deposits in the
tool may cut power and may be corrected by
cleaning the air strainer and flushing out the tool
with gum solvent oil or an equal mixture of SAE #
10 and kerosene.
Air Inlet
Rev. 06/16/10