Sioux Tools IW38HBPLT-4F User manual

1
Form Z805
Date 2009November10/A
Page 1 of 4
Printed In U.S.A.
250 Snap-on Drive • PO Box 1596 • Murphy, NC 28906 • USA • Phone: [phone] •www.siouxtools.com
IW38HBPLT-4F Special Impact Wrench
—Restricted Torque in Forward
Safety Messages
We provide safety messages to cover reasonable situations that may be encountered when operating, servicing or repairing
air tools. It is the responsibility of operators and servicing technicians to be knowledgeable about the procedures, tools and
materials used, and to satisfy themselves that the procedures, tools and materials will not compromise their safety, that of
others in the work place or the tool.
SAVE THESE INSTRUCTIONS!
Read these instructions carefully before installing, operating, servicing or repairing this
tool. Keep these instructions in an accessible place.
WARNING
When used improperly power tools can create hazardous situations.
Everyone using, maintaining, changing accessories or working near this tool must read, understand and follow
these Safety Instructions!
Improperly used power tools can cause injury or death.
Power Tool Safety Messages
WARNING
Improper use of power tools and accessories can cause broken tools.
• Read instructions before operating power tools.
•Be sure these instructions accompany the tool when passed from one user to a new or inexperienced user.
•Do not remove any labels. Replace all damaged labels.
Broken tools can cause injury.
Power tools can cause ying particles during use.
Wear safety goggles, user and bystanders.
Flying particles can cause injury.
Power tools generate noise.
Wear hearing protection, user and bystanders.
Prolonged exposure to noise can cause hearing loss.
Power tools vibrate.
•Avoid prolonged exposure to vibration, repetitive motions and uncomfortable positions.
•Stop using the tool if discomfort, tingling feeling or pain occurs. Seek medical advice before resuming use.
Prolonged exposure to vibration, repetitive motions and uncomfortable positions can cause injury.
Risk of contamination from hazardous dust.
•Wear an approved dust mask or respirator when using power tools that create dust.
•Some dust created by power sanding, sawing, grinding, drilling and other construction activities contains chemicals
known to cause cancer, birth defects or other reproductive harm.
Inhaling hazardous dust can cause injury.
Sudden changes in motion or position can occur while using the tool.
•Anticipate and be alert for changes in motion during start up and operation.
•Maintain a secure grip.
•Anticipate reaction force. Adjust your stance and hold tool securely.
•Observe the position of the reverse mechanism before operating the tool and be aware of rotation direction when you
press the trigger.
Sudden changes in motion or position can cause injury.
Risk of entanglement.
•Keep body parts away from moving parts.
•Do not wear loose clothing and jewelry while operating tool.
•Wear protective hair covering to contain long hair.
• Donotcarrytoolwithyourngeronthetrigger.
•Remove adjusting keys or wrenches before turning the tool on.
•Do not lock, tape, wire, etc., the trigger in the ON position.
•Keep handle dry, clean and free from oil and grease.
•Always shut off air supply and disconnect tool from air supply when changing accessories.
Entanglement can cause injury.
Flammable vapors can explode.
• Donotusenearammablevaporsornearagaslineorgastank.
• Directtoolexhaustairawayfromamesorhotsurfaces.
• Donotlubricatetoolswithammableorvolatileliquidssuchaskerosene,dieselorjetfuel.
•Use only recommended lubricants.
Explosion and ames can cause injury.

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Lubricating oil is discharged with exhaust air.
• Operate tool in a well-ventilated area.
• Avoid breathing exhaust air.
Breathing air with oil mist can cause injury.
Electricity can cause electric shock.
• Do not use on or near live electrical circuits.
• This tool is not insulated against electrical shock.
Electric shock can cause injury.
Work area can contain hazards.
• Keep work area clean and well lit.
• Stayalertandusecommonsensewhenoperatingtool.Donotoperatewhenfatigued,orundertheinuenceof
medication, drugs or alcohol.
• Beforeusingthetool,makesurethatashutoffdevicehasbeenttedonthesupplylineandthelocationiswell-
known and easily accessible so that the air supply to the tool can be shut off in an emergency.
• Never lay a tool down until the attachment has stopped moving.
• Do not overreach. Keep proper footing and balance at all times.
• Do not allow bystanders to contact tool.
• Keep bystanders at a safe distance from the work area.
• Wear appropriate protective apparel, users and bystanders.
• Direct exhaust air to avoid blowing air or debris from the workpiece onto the user or bystanders.
• When operating in heights, be aware of things below and around you.
• When tool is not in use, shut off the air supply and press trigger or lever to relieve air pressure.
• If tool is not to be used for a period of time, lubricate it, disconnect it from the air supply line and store it in a dry place
with moderate temperature.
• Store tools when not being used in a high, dry and locked area that can not be accessed by children.
Work area hazards can cause injury.
Risk of whipping compressed air hoses.
• Attach air lines securely.
• Checktheairhoseandttingsregularlyforwear.
• Do not connect quick-connect couplings directly to the tool.
• Use a whip air hose no longer than 60" (150 cm).
Whipping compressed air hose can cause injury.
Untrained users can create hazards.
• Secure work with a clamp or a vise whenever possible.
• Use the right tool. Do not use a tool that is too light or too heavy for the work.
• Do not force tool.
• Operate air tools at 90 psig (6.2 bar, 620 kPa) maximum air pressure.
• It is expected that users adopt safe working practices and observe all local, regional or country legal requirements
when installing, using or maintaining this tool.
Improper use can cause injury.
Improper repairs or lack of maintenance can create hazards.
• Do not modify or make temporary repairs. Use only genuine Snap-on replacement parts for maintenance and repair.
Servicing and repairs should be performed only by trained personnel.
• Do not use the tool if it vibrates too much, makes unusual noises, has loose parts, or shows any other sign of
damage.
• If tool malfunctions, discontinue use and immediately arrange for service and repair. If it is not practical to remove the
tool from service, shut off the tool air supply, write a warning tag and attach the tag to the tool.
• Donotremoveanymanufacturerttedsafetydevices(e.g.,wheelguards,safetytrigger,speedgovernors).
• If this tool becomes damaged beyond repair, disassemble and degrease the tool. Then separate all parts by material
type and recycle.
Improper parts, repair or maintenance can cause injury.
Impact Wrench Safety Messages
WARNING
Using damaged and incorrect sockets or accessories can cause ying particles.
• Do not use chipped, cracked or damaged sockets or accessories.
• Use only impact sockets and accessories.
• Periodically check the force to pull-off a socket from the square. Inadequate pull-off force may allow the socket to
come off when rotating.
• Useonlyball-jointexiblesockets.Donotusesquareblocktypeexsockets.
Flying particles can cause injury

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Air Compressor
The air compressor should have sufcient capacity to deliver 4.6 cfm (33 SCFM) at 90 psig (6.2 bar, 620 kPa) at each outlet while the tool is
running. The receiver tank should have sufcient capacity to provide surge balance for each air tool.
Air Strainer
An air strainer is built into the removable air inlet bushing located at the rear of the impact wrench. To clean, remove the bushing and use an air
hose to blow dirt and other particles from the screen and bushing.
Before reinstalling the air inlet bushing, check the O-ring for damage. If it is damaged, replace it with a new O-ring to prevent air leakage.
Torque reinstalled air inlet bushing to 50–55 lbs. ft. (68–75 N•m).
Air Supply
The pneumatic impact wrench operates best on clean, moisture-free, well-lubricated air at a constant pressure of 90 psig (6.2 bar, 620 kPa)
maximum.
Piping System
The piping system should be large enough to avoid an excessive pressure drop under maximum ow conditions. All pipe ttings and hose out-
lets should be 1/2" and should be arranged so there are no low spots that collect water which cannot be drained daily. Do not use an air hose
less than 3/8" inside diameter or one that is too long because pressure drop under maximum ow conditions could reduce performance.
Filter
A lter should be used to assure clean air for the air impact wrench. Water, dirt and scale act as abrasives which could damage the air impact
wrench. A lter unit should be installed between the compressor and the air regulator and air lubricator.
Air Regulator
Regulated air pressure is necessary for proper performance of the air impact wrench. The regulator will adjust and maintain the recommended
air pressure of 90 psig (6.2 bar, 620 kPa). Pressure less than this reduces efciency, while pressure greater than this increases blows and
speed beyond the rated capacity—creating potential hazards and possible damage to the air impact wrench. Check the air pressure at the
regulator while using the impact wrench in a normal manner.
Air Line Lubricator
✔ Do not use a heavy grade of oil because stalling and low performance will result.
The preferred method of lubricating the air impact wrench motor is to use an air line lubricator. It should be lled with a good grade of SAE
10W oil.
If an air line lubricator is not used, lubricate the air motor by injecting approximately 1/8 oz (3.75 ml) of air motor oil into the air inlet of the
wrench each day before using it.
Oil Reservoir
The impact mechanism chamber is sealed at the factory and should not require any additional oil.
Forward / Reverse Lever
The forward/reverse lever is located in the middle of the wrench above the trigger. For forward (clockwise) anvil rotation, push lever towards
front of tool. For reverse (counterclockwise) rotation, push lever towards back of tool.
Air Pressure
✔ Restricted forward torque, always hand torque to nal specication
WARNING
Restricted torque is dependent on line pressure.
Do not adjust line regulator after tool is set to desired torque.
Socket Retainer
WARNING
Disconnect the air hose before changing sockets.
This air impact wrench features a steel locking ring for retaining all types of impact sockets. The ring holds them in place by friction. It will be
necessary to replace the ring periodically when the force to remove the socket falls below six (6) lbs for a 1/2" square drive.
Specications
Square Drive Size............................................................... 1/2"
Torque
Clockwise ....................................................50 lbs. ft. (68 N•m)
Counterclockwise ....................................285 lbs. ft. (386 N•m)
Recommended Air Pressure......................................................
..............................90 psig (6.2 bar, 620 kPa), maximum
Air Consumption, Free Speed .................... 4.6 cfm (33 SCFM)
Air Consumption, Working .......................... 4.2 cfm (30 SCFM)
RPM, Free Speed CCW ...................................................9,500
Blows per Minute ..............................................................1,400
Air Inlet Thread Size ............................................. 1/4"–18 NPT
Air Supply Hose Size ................................3/8" (9.5 mm) ID min
Maximum Air Supply Hose Length ............................30' (10 m)
Dimensions
Height ............................................................... 7.20" (18.3 cm)
Length............................................................... 7.57" (19.2 cm)
Width ................................................................ 2.18" (5.54 cm)
Weight .............................................................2.88 lbs (1.3 kg)
*Sound Pressure Level .................................................. 95 dBA
*Sound Power Level .................................................... 106 dBA
**Vibration Level ..........................................................5.2 m/s2
Specications at 90 psig (6.2 bar, 620 kPa)
*Tested in accordance with ISO Standard 3744 and Pneurop test
code PN8NTC1.
**Tested in accordance with ISO Standard 8662-7
A–Receiver Tank, Minimum 40 Gallons
(151.5liters)
B–Compressor, Sufcient Capacity
C–Drain, Daily
D–Pipe and Fittings, Minimum 1/2"
E–Top Air Intake
F–Shut Off Valve, Easily Reached
G–Filter
H–Air Regulator, Set at Working Pressure
I–Lubricator
J–Air Tool Connection
K–Low Spot, Water Trap
L–Drain, Daily
Figure 1: Air Supply

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Fig. Part
No. No. Description
Fig. Part
No. No. Description
Printed In U.S.A.
IW38HBPLT-4F Special Impact Wrench
—Restricted Torque in Forward
250 Snap-on Drive • PO Box 1596 • Murphy, NC 28906 • USA • Phone: [phone] •www.siouxtools.com
*Order Quantity As Required
FURNISH CATALOG, SERIAL, AND MODEL
NUMBER WHEN ORDERING PARTS
1. ME6A29 Oil Seal
2. MG3151LT1-T Housing
2A. MG31-29 Top Grip
2B. ME11C10 Nose Bushing
2C. MG31-23 Trigger Bushing
3. MG3151L-12R Anvil
3A. ME7B3 O-Ring
3B. ME7A97 Ring
4. IM3100-14 Pin (2)*
5. IM3100-13 Engagement Dog (2)*
6. MG325-11 Frame
7. ME11A46 Ball Bearing (2)*
8. ME7B109 O-Ring
9. MG31-4 Front End Plate
10. ME6A12 Oil Seal
11. MG31-501 Wear Plate (2)*
12. MG3151LT507 Cylinder Liner
13. MG31-530-8V Vane (8)—Kit
14. MG31-506 Rotor
15. ME2A149 Alignment Pin
17. 04250 O-Ring (2)*
18. MG31-300 RV Detent
19. MG3151LT9 Reverse Valve
20. MG31-3 Gasket
21. MG31-33 Gasket
22. MG3151LT2-T End Cap
22A. SS2492 Label
23. MG3151LT16 Regulator Knob
24. ME3R6A End Cap Screw #10 (4)*
25. ME3F79 10-32 FH Screw
26. MG31-200 Trigger and Stem Assembly
27. IM3100-22 Valve Seat
28. IM3100-20 Trigger Valve
29. ME1A226 Spring
30. MG31-28 Grip
31. ME6F1A Adapter Bushing
Available Accessories
IW12LT BOOT Boot

This pdf incorporates the following model numbers:
IW38HBPLT-4F