Napa 6-769 Manual De Instrucciones página 6

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 highest position 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
Air Regulator
tightness - note
Knob
regulator setting
PLEASE REVIEW ALL WARNING INSTRUCTIONS PRIOR TO OPERATION. SAVE THIS MANUAL FOR FUTURE REFERENCE.
6-769
6_769_man040804.indd 6
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
Forward/
penetrat-
Reversing
ing oil and
Valve
break rust
seal before
Air Inlet
removing
6
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.
The reversing valve is used to
change the rotation of the tool.
When the valve is moved to the
right, the tool is in a forward or
right hand rotation. When the
valve is moved to the left, the
rotation is reverse or left hand.
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
absorbs energy and reduces power.
S
PECIFICATIONS
Free Speed ................... 6,500 RPM
Max. Torque ............... 750 ft. lbs.
Torque Range .............. 150-600 ft. lbs.
Weight ........................ 10.6 LBS.
Length .......................... 9.9"
Air Inlet ....................... 1/4" NPT
Avg. Air Cons. ............. 7.0 CFM
Recom. Air Pressure .... 90 PSIG
Rev. 04/08/04
7/30/04 9:59:37 AM