2
WARNING LABEL IDENTIFICATION
FAILURE TO OBSERVE THE FOLLOWING WARNINGS COULD RESULT IN INJURY.
Always wear eye protection
when operating or perform-
ing maintenance on this tool.
WARNING
WARNING
Always wear hearing
protection when operating
this tool.
Always turn off the air sup-
ply and disconnect the air
supply hose before install-
ing, removing or adjusting
any accessory on this tool,
or before performing any
maintenance on this tool.
WARNING
Air powered tools can vibrate
in use. Vibration, repetitive
motions or uncomfortable po-
sitions may be harmful to your
hands and arms. Stop using
any tool if discomfort, tingling
feeling or pain occurs. Seek
medical advice before resum-
ing use.
WARNING
Do not carry the tool by the
hose.
WARNING
WARNING
Do not use damaged, frayed
or deteriorated air hoses
and fittings.
WARNING
Keep body stance balanced
and firm. Do not overreach
when operating this tool.
WARNING
Operate at 90 psig (6.2 bar/
620 kPa) Maximum air pres-
sure.
90 psig
(6.2bar/620 kPa)
International Warning Label:
Order Part No. ___________
ADJUSTMENTS
SETTING THE POWER REGULATOR
Impact wrenches are not torque control devices.
Fasteners with specific torque requirements must be
checked with suitable torque measuring devices after
installation with an impact wrench.
255A, 255A–EU, 255A–3–EU Impact Wrench
incorporates a power regulator into the reverse
mechanism.
To adjust the power, rotate the Power Regulator (29) until
the notch aligns with the number of the desired power
setting.
The numbers 1 thru 3 on the housing are only for
reference and DO NOT denote a specific power output.
One (1) designates the lowest power output whilethree
(3) denotes the highest.
PLACING TOOL IN SERVICE
LUBRICATION
Ingersoll–Rand No. 50
Always use of an air line lubricator with these tools.
We recommend the following Filter–Lubricator–Regulator
Unit:
For International– No. C28–C4–FKG0
For U.S.A. – No. C28–04–FKG0–28
After each 48 hours of operation, or as experience
indicates, remove the Oil Plug Screw (51) and check oil
level in the impact mechanism. If oil level is low, drain
old oil and add 1–3/8 oz (40 cc) of Ingersoll–Rand No. 50
Oil to the impact mechanism. Replace Oil Plug and
tighten securely.
MAIN LINES 3 TIMES
AIR TOOL INLET SIZE
TO
AIR
SYSTEM
TO
AIR
TOOL
LUBRICATOR
REGULATOR
FILTER
BRANCH LINE 2 TIMES
AIR TOOL INLET SIZE
DRAIN REGULARLY
COMPRESSOR
(Dwg. TPD905–1)
SPECIFICATIONS
Model
Type of
Handle
Drive
Impacts
per min.
Recommended
Torque Range
H
Sound Level
dB (A)
♦
Vibrations
Level
in.
ft–lbs (Nm)
Pressure
•
Power
m/s
2
255A, 255A–EU
pistol
3/4” sq.
1,100
100–500
(135.6–678)
93.7
106.7
4.6
255A–3–EU
pistol
3/4” sq.
1,100
100–500
(135.6–678)
93.7
106.7
4.0
H
Tested in accordance with ANSI S5.1–1971 at free speed
♦
Tested to ISO8662–1 loaded with frictionbrake to 9 RPM
•
ISO3744
