Nipple
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.
(A) Forward &
Reversing Lever
PLEASE REVIEW ALL WARNING INSTRUCTIONS PRIOR TO OPERATION. SAVE THIS MANUAL FOR FUTURE REFERENCE.
775-0111A
INSTRUCTION MANUAL & PARTS BREAKDOWN
(B) Air Inlet
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 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.
OPERATING INSTRUCTIONS
This impact wrench is rated at 3/8" 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.
NOTE: Actual torque on a fastener is directly related to
joint hardness, tool speed and condition of socket.
Use the simplest possible tool-to-socket hook up. Every
connection absorbs and reduces power.
The forward and reversing lever (A) Figure 1, is used to
change the rotation of the tool. When the lever is set
in forward position (F), the tool will turn in a right
hand rotation. When the lever is moved to the reverse
position (R), the tool will run in reverse or left hand
rotation.
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. If outside conditions are in
order and tool continues erratic action or low power,
disconnect tool from hose and contact your nearest
NAPA/EVERCRAFT authorized service center.
3
Rev. 03/08/04