3/8" Dr. Air Butterfly Impact Wrench

3/8" Dr. Air Butterfly Impact Wrench
8192106manual
10/19/07
11:23 AM
Page 1
8192106
3/8" Dr. Air Butterfly
Impact Wrench
Owner’s Manual
Read and understand all instructions before use.
Retain this manual for future reference.
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Specifications
• Construction: Polished aluminum and machined cast steel
• Operating speed: 9,000 max RPM
• Torque: 75 ft-lbs
• Air inlet: 1/4" NPT
• Average air consumption: 3 CFM
• Max air pressure: 90 PSI
• Blows per minute: 1,000
• 3/8" drive
• Net weight: 2.2 lbs
• Built in regulator with 8 speed settings
This compact impact wrench has been designed to reach fasteners in
much tighter spaces than convention pistol style impact wrenches. The
butterfly switch at the top of the tool makes it easy to quickly change
impact direction.
Store this manual and the invoice in a safe place for future reference.
Safety Information
Warning: when using tools, basic safety precautions should always be
followed to reduce the risk of personal injury and damage to
equipment.
Read all instructions before using this tool.
1. Keep work area clean. Cluttered areas invite injuries.
2. Observe work area conditions. Do not use machines or power tools in
damp or wet locations. Don’t expose to rain. Keep work area well lit.
Do not use electrically powered tools in the presence of flammable
gases or liquids.
3. Keep children away. Children must not be allowed in work area. Do
not let them handle machines, tools or extension cords.
4. Store idle equipment. When not in use, tools must be stored in a dry
location to inhibit rust. Always lock up tools and keep them out of
reach of children.
5. Use the right tool for the job. Do not attempt to force a small tool or
attachment to do the work of a larger industrial tool. The tool will
perform better and more safely at the rate for which it was intended.
Do not modify this tool or used for a purpose for which it was not
designed.
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6. Dress properly. Do not wear loose clothing or jewellery as they can be
caught in moving parts. Protective, electrically non-conductive clothes
and non-skid footwear are recommended when working. Tie back long
hair.
7. Use eye, face and ear protection. Always wear ANSI approved impact
safety goggles. Wear a full face shield if you are producing metal
filings or wood chips. Wear an ANSI approved dust mask or respirator
when working around metal, wood and chemical dusts and mists. Wear
ANSI approved earplugs.
8. Do not over reach. Keep proper footing and balance at all times. Do
not reach over or across running machines.
9. Maintain tools with care. Keep tools clean and in good condition for
better and safer performance. Follow instructions for lubricating and
changing accessories. Inspect tool fitting sand hoses periodically and, if
damaged, have them repaired by an authorized technician. The handles
must be kept clean, dry and free from oil and grease at all times.
10. Disconnect power. Disconnect from air pressure source when not in
use.
11. Remove adjusting keys and wrenches. Check that keys and adjusting
wrenches are removed from the tool or machine work surface before
connecting it.
12. Avoid unintentional starting. Be sure that the butterfly throttle switch
is in the neutral, OFF position when not in use and before attaching to
pressure source. Do not carry the tool with a finger near or on the
switch.
13. Stay alert. Watch what you are doing and do not operate any tool
when you are tired.
14. Check for damaged parts. Before using any tool, any part that appears
damaged should be carefully checked to determine that it will operate
properly and perform its intended function. Check for alignment and
binding of moving parts; any broken parts or mounting fixtures; and
any other condition that may affect proper operation. Any part that is
damaged should be properly repaired or replaced by a qualified
technician. Do not use the tool if the butterfly throttle switch does not
function properly.
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15. Guard against electric shock when working on electrical equipment,
such as your air compressor. Prevent body contact with grounded
surfaces such as pipes, radiators, ranges, and refrigerator enclosures.
16. Replacement parts and accessories. When servicing, use only identical
replacement parts. Only use accessories intended for use with this
tool.
17. Do not operate tool if under the influence of alcohol or drugs. Read
warning labels on prescriptions to determine if your judgement or
reflexes are impaired while taking drugs. If there is any doubt, do not
operate the tool.
18. Use proper size and type of air pressure line and fittings. The
recommended air line for this tool is 3/8" I.D. with up to 90 PSI. 1/4"
NPT air inlet is the recommended size.
19. Maintenance. For your safety, service and maintenance should be
performed regularly by a qualified technician.
20. Maintain a proper regulator and moisture trap in the air line at all
times.
Note: Performance of this tool may vary depending on variations in local
air pressure.
Warning: The brass components of this product contain lead, a chemical
known to the state of California to cause birth defects (or other
reproductive harm.)
Unpacking
Examine the condition of the impact wrench. If any parts are missing or
broken, please contact your nearest Princess Auto location.
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Operation
1. Install a standard 1/4" air connector (not included) to the air inlet (36.)
First wrap the threaded portion of the air connector with pipe thread
seal tape. Tighten securely.
2. Attach a standard quick connector (not included) to the 3/8" air
pressure source hose. Attach the air hose to the impact wrench.
Note: If not using an automatic in line oiler, add a few drops of air tool
oil to the air inlet before attaching the air hose. Add a few more
drops of oil after every hour of continual use.
3. Set the air pressure regulator on the air compressor to 90 PSI.
Warning: Do not exceed the recommended pressure of 90 PSI. Damage
to the tool, and potential personal injury or property damage
may result.
4. Check the air line and its connections for air leaks. If there are any,
repair them before using the tool.
Note: Turn off the air compressor and disconnect the air pressure hose
before changing sockets or making any adjustments to this tool.
Severe injury or property damage may otherwise result.
Warning: This tool generates considerable torque when in use. Always
hold the tool with both hands when using, and brace yourself
to resist the torque which will be delivered to the work piece.
5. Select the appropriate size 3/8" drive impact socket (not included) for
the job. Push and snap the socket onto the anvil (9).
Note: Impact sockets must be rated for 9,000 RPM or greater.
6. Set the direction of the air
impact wrench to Forward or
reverse as in the figure below.
By moving the throttle lever
“butterfly”(5) to the right, the
tool is set to operate forward.
The amount of torque can be
controlled by rotating the
regulator (38). There are
settings from 1 to 8, indicating
increasing torque. Rock the
throttle lever butterfly to the left
to reverse the direction of the tool.
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Note: Forward refers to clockwise rotation,
and reverse refers to counterclockwise
rotation of the anvil.
Note: The actual torque delivered at each
setting will depend on the air pressure
supplied to the tool. Test the actual
torque by tightening a nut or bolt at
each setting, then observing the
resultant torque with a mechanical
torque wrench (not included.)
7. If installing a nut or bolt, set it as tight as
possible by hand before tightening with the impact wrench.
8. Place the socket (not included) over the fastener.
9. Grip the impact wrench tightly with both hands, and press the throttle
lever butterfly to the right. The tool will operate and tighten the
fastener.
10. When the fastener is tightened, release the throttle lever butterfly and
remove the tool from the fastener.
11. If possible, check the actual torque with a mechanical torque wrench.
12. To remove a fastener, press the throttle lever butterfly to the left. The
tool will loosen the fastener.
Note: always check to ensure thread direction of any fastener before
attempting to install or remove it.
13. When finished with the tool, turn off the air compressor and
disconnect the air hose. Put the impact wrench away in a safe storage
area.
Maintenance
1. The impact wrench should be kept clean and dry.
2. When not in use, store the tool is a suitable place where it will not be
exposed to water, corrosive material, or being knocked about.
3. If not using an inline oiler, inject a few drops of air tool oil into the air
inlet of the tool and the oiler screw (3) port after every hour of
continuous use.
4. If the tool looses power or air leaks are noticed, take it to a certified
technician for servicing. All repairs should be performed by a qualified
service technician.
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Parts List
No.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
Part
Rubber nose guard
Motor housing
Oiler screw
Throttle pin
Throttle lever
Anvil bushing
O-ring
Socket retaining ring
Anvil
Hammer cage
Hammer
Cam
Hammer pin
O-ring
Ball bearing
Oil seal
Front end plate
Motor pin
Cylinder
Rotor
Rotor blade
Qty
1
1
1
2
1
1
1
1
1
1
1
1
1
0
1
0
1
1
1
1
6
No.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
Part
Rear end plate
Ball bearing
Back cap gasket
Back cap
Lock washer
Cap screw – long
Cap screw – short
Plunger
Spring
O-ring
Valve seat
Valve spring
O-ring
O-ring
Air inlet
O-ring
Regulator
Retainer plate
Screw
Retaining ring
Fixing ring
Qty
1
1
1
1
4
2
2
2
2
2
2
2
1
1
1
1
1
1
2
1
1
Note: Some parts listed are shown for illustration purposes only and are not available as
replacement parts.
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