Napa 6-745A Manual De Instrucciones página 4

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 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
Forward/Reversing
Valve
Air Regulator
PLEASE REVIEW ALL WARNING INSTRUCTIONS PRIOR TO OPERATION. SAVE THIS MANUAL FOR FUTURE REFERENCE.
6-745A
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
Air Inlet
4
to five seconds, use a larger size
impact wrench. Do not use impact
wrench beyond rated capacity, as
this will drastically reduce tool life.
The reversing valve is used to
change the rotation of the tool.
When the valve is out the rear of
end cap, the tool is in a forward
or right hand rotation. When the
valve is pushed in, the rotation is
reverse or left hand. (The illustra-
tion of the tool shows the tool in
the reverse position.)
NOTE: Actual torque on a fastener
is directly related to joint hardness,
tool speed, condition of socket
and the time the tool is allowed
to impact.
Use the simplest possible tool-to-
socket hook up. Every connection
S
PECIFICATIONS
Free Speed ........................... 7,000 RPM
Max. Torque ........................ 360 ft. lbs.
Torque Range ................. 50-330 ft. lbs.
Weight ......................................... 6 Lbs.
Length ........................................... 9.06"
Air Inlet Thread ...................... 1/4" NPT
Avg. Air Consumption ............ 5.0 CFM
Rec. Air Pressure ........................ 90 psig
Rev. 05/27/05