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3

1/2” DRIVE AIR IMPACT WRENCH

4) Service

a. Tool service must be performed only by qualified repair personnel.
b. When servicing a tool, use only identical replacement parts. Use only authorized parts.
c. Use only the lubricants specified by the manufacturer. 

5) Additional Safety Warnings

a. The warnings and precautions discussed in this manual cannot cover all possible conditions and situations that may 

occur.

 It must be understood by the operator that common sense and caution are factors which cannot be built into this 

product, but must be supplied by the operator.

b. Only use with accessories rated to handle the forces exerted by this tool during operation. 

Other accessories not designed 

for the forces generated may break and forcefully launch pieces.

c. Attach all accessories properly to the tool before connecting the air supply.

 A loose accessory may detach or break during 

operation.

d. Thoroughly read and understand the manual for the air compressor used to power this tool. Install an in-line shutoff 

valve to allow immediate control over the air supply in an emergency, even if a hose is ruptured.

e. Use this tool with both hands only. Using tools with only one hand can result in loss of control.
f. Do not lay the tool down until it has come to a complete stop. 

Moving parts can grab the surface and pull the tool out of 

 your control.

g. Do not force the tool. Use a larger one if needed.
h. Use a torque wrench to verify tightness of all fasteners after use

 (If required).

i.  Do not hold sockets, anvil or adapters during use.
j.  Anyone using vibrating tools regularly or for an extended period should first be examined by a doctor and then have 

regular medical check-ups to ensure medical problems are not being caused or worsened from use. 

Pregnant women 

or people who have impaired blood circulation to the hand, past hand injuries, nervous system disorders, diabetes, or 
Raynaud’s Disease should not use this tool. If you feel any symptoms related to vibration (such as tingling, numbness, and 
white or blue fingers), immediantly discontinue use and seek medical advice as soon as possible.

k. Do not smoke during use. 

Nicotine reduces the blood supply to the hands and fingers, increasing the risk of vibration 

related injury.

l. Wear suitable gloves to reduce the vibration effects on the user.

6) Description of Symbols

The following symbols could be shown on the tool:

Read the instruction manual before use.

Risk of Explosion

Wear Ear Protection

Wear Eye Protection

no

No-load speed, Free Speed

CFM

Cubic Feet per Minute flow

.../min, RPM

Revolutions or reciprocation per minute

SCFM

Cubic Feet per Minute flow at 
standard conditions

PSI

Pounds per square inch of pressure

NPT

National pipe thread, tapered

ft-lb

Foot-pounds of torque

BPM

Beats/ Blows per minute

Nm

Newton meters of force 

    

BSP

British standard pipe

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