Aeropro 7445 Instruction Manual

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Operating Instruction and safety manual
1/2” Professional Air Impact Wrench
Model : 7445
Residual risks
Even when the tool is used as prescribed it is not possible to eliminate all residual risk factors. The
following hazards may arise in connection with the tool’s construction and design:
1. Damage to lungs if an effective dust mask is not worn.
2. Damage to hearing if effective hearing protection is not worn.
3. Health defects resulting from vibration emission if the power tool is being used over longer period of time or not
adequately managed and properly maintained.
4. Wear eye protection.
IMPORTANT:
Upon receipt of the product, read and follow all safety rules,
operating instructions before first use it. And retain this
manual for future reference.
2015

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Technical Data
Square drive………………………………………………………………………………………………..1/2”
Capacity Bolt Size ………………………………………………………………………..……...5/8” (16mm)
Free speed……………………………………………………………………………………………7000rpm
Max torque………………………………………………………………………………....500Ft-Lb (675N.m)
Avg.air consumption…………………………………………………………………............7cfm (198 l/min)
Operating pressure……………………………………………………………………………...90psi (6.3bar)
Air inlet size………………………………………………………………………………………...……….1/4”
Air hose………………………………………………………………………………………..………….3/8” ID
Weight…………………………………………………………………………………….…...5.94Lbs (2.7kgs)
A weighted sound pressure level………………………………………………………86.4dB(A), k=3dB(A)
Sound power level……………………………………………………………………… 97.4dB(A) , k=3dB(A)
Max LPc…………………………………………………………………………………………………………………………….…….………………..106.9dB
Vibration in the handle………………………………………………………..……….…8.47m/s2,k=1.33m/s2
Important Safety Rules
1. Follow all workshop safety rules, regulations, and conditions when using wrench.
2. Do not wear watches, rings bracelets or loose clothing when using air tools.
3. WARNING! Disconnect from air supply before changing accessories or servicing.
4. Maintain the wrench in good condition and replace any damaged or worn parts. Use genuine parts only. Non-authorised
parts may be dangerous.
5. WARNING! Check correct air pressure is maintained and not exceeded. We recommend 90psi.
6. Keep air hose away from heat, oil and sharp edges. Check air hose for wear before each use and ensure that all connections
are secure.
7. Only use impact sockets which are specifically designed for use with an impact wrench.
8. Wear approved safety eye/face shield, ear defenders, and hand protection.
9. WARNING! Due to the possible presence of asbestos dust from brake linings, when working around vehicle brake systems
we recommend you wear suitable respiratory protection.
10. Maintain correct balance and footing. Ensure the floor is not slippery and wear non-slip shoes.
11. Keep children and non essential persons away from the working area.
12. DO NOT use the wrench for a task it is not designed to perform.
13. DO NOT use wrench if damaged or thought to be faulty.
14. DO NOT use wrench unless you have been instructed in its use by a qualified person.
15. DO NOT carry the wrench by the air hose at yourself or others.
16. DO NOT direct air from the air hose at yourself or others.
17. When not in use disconnect from air supply and store in a safe, dry, childproof location.
General safety rules
ging
accessories on, or working near the assembly power tool for threaded fasteners.
Failure to do so can result in serious bodily injury.
Only qualified and trained operators should install, adjust or use the assembly power tool for threaded fasteners.
Do not modify this assembly power tool for threaded fasteners. Modifications can reduce the effectiveness of safety measures
and increase the risks to the operator.
Do not discard the safety instructions; give them to the operator.
Do not use the assembly power tool for threaded fasteners if it has been damaged.

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marked on the tool. The employer/user shall contact the manufacturer to obtain replacement marking labels when necessary.
Operating Instruction
Description
3/8” Air impact wrench, rear exhaust, professional tools for equipment & machine assembly line, automobile assembly lines,
motorcycle assembly lines. Thoughtful design for easily hanging or displacing in workshop. Various torque, speed setup to
maximize the working efficiency. Durable material used for easy maintenance and long lifetime.
Projectile hazards
Failure of the workpiece, of accessories or even of the inserted tool itself can generate high-velocity projectiles.
Always wear impact-resistant eye protection during the operation of the assembly power tool for threaded
fasteners. The grade of protection required should be assessed for each use. Ensure that the workpiece is
securely fixed.
Entanglement hazards
Entanglement hazards can result in choking, scalping and/or lacerations if loose clothing, personal jewellery,
neckware, hair or gloves are not kept away from the tool and accessories.
Gloves can become entangled with the rotating drive, causing severed or broken fingers.
Rotating drive sockets and drive extensions can easily entangle rubber-coated or metal-reinforced gloves.
Do not wear loose-fitting gloves or gloves with cut or frayed fingers.
Never hold the drive, socket or drive extension.
Keep hands away from rotating drives.
Operating hazards
The following apply.
and heat. Wear suitable gloves to protect hands.
Operators and maintenance personnel shall be physically able to handle the bulk, weight and power of the tool.
.
Release the start-and-stop device in the case of an interruption of the energy supply.
-ended crow-foot nutrunners.
unscrewing.
Repetitive motions hazards
or other parts of the body. le posture
whilst maintaining secure footing and avoiding awkward or off-balanced postures. The operator should change
posture during extended tasks, which can help avoid discomfort and fatigue.
ecurring discomfort, pain, throbbing, aching, tingling,
numbness, burning sensations or stiffness, these warning signs should not be ignored. The operator should tell the
employer and consult a qualified health professional.

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Accessory hazards
The following apply.
inserted tool or accessory.
only sizes and types of accessories and consumables that are recommended by the assembly power tool for
threaded fasteners manufacturer.
-wrench-rated sockets in good condition, as poor condition or hand sockets and accessories
used with impact wrenches can shatter and become a projectile.
Workplace hazards
The following apply.
the tool and also of trip hazards caused by the air line or hydraulic hose.
is not insulated against coming into contact with electric power.
Dust and fume hazards
tools for threaded fasteners can cause ill health (for
example, cancer, birth defects, asthma and/or dermatitis); risk assessment and implementation of appropriate
controls for these hazards are essential. e use of the tool and the potential for disturbing existing dust.
-filled environment.
ll integral features or accessories for the collection, extraction or suppression of airborne dust or fumes should
be correctly used and maintained in accordance with the manufacturer's instructions.
's instructions and as required by occupational
health and safety regulations.
Noise hazards
such as tinnitus (ringing, buzzing, whistling or humming in the ears).
⎯
from “ringing”. ection in accordance with employer's instructions and as required by occupational health and
safety regulations.
handbook, to prevent an unnecessary increase in noise levels.
working order when the assembly power tool for threaded fasteners is operating.
e/inserted tool as recommended in the instruction handbook, to
prevent an unnecessary increase in noise.

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Vibration hazards
the nutrunner sockets.
assembly power tool for threaded fasteners, tell your employer and consult a physician.
handbook, to prevent an unnecessary increase in vibration levels.
-fitting sockets or extensions, as this is likely to cause a substantial increase in vibration.
prevent an unnecessary increase in vibration levels.
fittings should be used where practicable.
from vibration is generally greater when the grip force is higher.
Additional safety instructions for pneumatic power tools
use, before
changing accessories or when making repairs;
not use quick-disconnect couplings at tool inlet for impact and air-hydraulic impulse wrenches. Use
hardened steel (or material with comparable shock resistance) threaded hose fittings.
ins shall be installed and whipcheck safety
cables shall be used to safeguard against possible hose-to-tool and hose-and-hose connection failure.
-control and continuous-rotation tools, the air pressure has a safety critical effect on performance.
Therefore, requirements for length and diameter of the hose shall be specified.
Air supply
1. Ensure wrench air valve (or trigger) is in the “off” position before connecting to the air supply.
2. It will require air pressure of 90psi, and air flow according to specification.
3. WARNING! Ensure the air supply is clean and does not exceed 90psi while operating the wrench. Too high
an air pressure and unclean air will shorten the product life due to excessive wear, and may be dangerous
causing damage or personal injury.
4. Drain the air tank daily. Water in the air line will damage the wrench.
5. Clean air inlet filter weekly.
6. Line pressure should be increased to compensate for unusually long air hoses (over 8 metres). The hose
diameter should be 3/8” I.D.
7. Keep hose away from heat, oil and sharp edges. Check hose for wear, and make certain that all
connections are secure.

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Lubrication
An automatic in-line filter-regulator-lubricator is recommended (Fig4) as it increases tool life and keeps the tool
in sustained operation. The in-line lubricator should be regularly checked and filled with air tool oil.
Proper adjustment of the in-line lubricator is performed by placing a sheet of paper next to the exhaust ports
and holding the throttle open approximately 30 seconds. The lubricator is properly set when a light stain of oil
collects on the paper. Excessive amounts of oil should be avoided.
In the event that it becomes necessary to store the tool for an extended period of time (overnight, weekend,
etc.), it should receive a generous amount of lubrication at that time. The tool should be run for approximately
30 seconds to ensure oil has been evenly distributed throughout the tool. The tool should be stored in a clean
and dry environment.
It is most important that the tool be properly lubricated by keeping the air line lubricator filled and correctly
adjusted. Without proper lubrication the tool will not work properly and parts will wear prematurely.
Use the proper lubricant in the air line lubricator. The lubricator should be of low air flow or changing air
flow type, and should be kept filled to the correct level. Use only recommended lubricants, specially made
for pneumatic applications. Substitutes may harm the rubber compounds in the tools, O-rings and other
rubber parts.
IMPORTANT!!!
If a filter/regulator/lubricator is not installed on the air system, air operated tools should be lubricated at least
once a day or after 2 hours work with 2 to 6 drops of oil, depending on the work environment, directly through
the male fitting in the tool housing.
Loading and operation
WARNING: Ensure you read, understand and apply safety instructions before use.
1. Only use impact sockets which are specifically designed for use with impact wrench.
2. Connect the wrench to the air hose .
3. Place the socket over the subject nut and depress the trigger to operate the wrench.
4. To change direction push the button at the top of the handle. Direction of .R. for reverse and “F” for forward
5. The flow of air may be regulated by adjusting flow valve at the base of the handle.
6. Ensure the air supply is clean and does not exceed 90psi while operating the wrench. Too high an air
pressure and unclean air will shorten the product life due to excessive wear, and may be dangerous causing
damage or personal injury.
7. Make children away from the tools and workplaces.
DO NOT use any additional force upon the wrench in order to remove a nut.
DO NOT allow wrench to free run for an extended period of time as this will shorten its life.

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Maintenance
WARNING: Disconnect wrench from air supply before changing accessories, servicing or performing maintenance.
Replace or repair damaged parts. Use genuine parts only. Non-authorised parts may be dangerous.
1. Lubricate the air wrench daily with a few drops of air tool oil dripped into the air inlet
2 DO NOT use worn, or damaged sockets.
3. Loss of power or erratic action may be due to the following:
a) Excessive drain on the air line. Moisture or restriction in the air pipe. Incorrect size or type of hose connectors. To
remedy check the air supply and follow instructions.
b) Grit or gum deposits in the wrench may also reduce performance. If your model has an air strainer (located in the area
of the air inlet), remove the strainer and clean it.
4. When not in use, disconnect from air supply, clean wrench and store in a safe, dry, childproof location.
Trouble Shooting
The following form lists the common operating system with problem and solutions. Please read the form carefully and follow it.
WARNING:If any of the following symptoms appears during your operating, stop using the tool immediately, or serious
personal injury could result. Only a qualified persons or an authorized service center can perform repairs or replacement of tool.
Disconnect tool from air supply before attempting repair or adjustment. When replacing O-rings or Cylinder, lubricate with air
tool oil before assembly.
PROBLEMS
POSSIBLE CAUSES
REMEDIES
Tool runs at normal speed but
loses under load
■ Cam clutch worn or sticking
due to lack of lubricant.
■ Lubricating clutch housing.
■ Check for excess clutch oil. Clutch cases need
only be half full. Overfilling
can cause drag on high speed clutch parts, ie. a
typical oiled/lubricated wrench requires 1⁄2 ounce
of oil.
GREASE LUBRICATED:NOTE: Heat usually
indicates insufficient grease in chamber. Severe
operating conditions may require more frequent
lubrication.
Tool runs slowly. Air flows
slightly from exhaust
Motor parts jammed with dirt
particles
■ Power regulator in closed
position
■ Air flow blocked by dirt.
■ Check air inlet filter for blockage.
Pour air tool lubricating oil into air inlet as per
instructions.
■ Operate tool in short bursts quickly reversing
rotation back and forth where applicable.
Repeat above as needed.
Tools will not run. Air flows
freely from exhaust
■ One or more motor vanes stuck
due to material build up.
■ Pour air tool lubricating tool into air inlet.
■ Operate tool in short bursts of forward and/or
reverse rotation where applicable.
■ Tap motor housing gently with plastic mallet.
■ Disconnect supply. Free motor by rotating drive
shank manually where applicable
Tool will not shut off
■ „O‟ rings throttle valve
dislodged from seat inlet valve.
■ Replace „O‟ ring.
Note: Repairs should be carried out by a qualified person.

Explosive View and Parts list
Issue date:
Version no.:
No. Description Qty. No. Description Qty.
No. Description Qty.
No. Description Qty.
Grease fitting
Bolt M5*22
Spring washer 5
Housing cover
Shaft bush
Anti drop roll
O-ring 7.5*1.8
Drive shaft
Hammer pin
Hammer cage
Hammer
Housing cover washer
Gasket
Housing
Housing rubber gasket
Bearing
Front cover
Anvil
Anvil blade
Cylinder pin
Cylinder
Rear cover
Bearing
Snap retainer
Sealing washer
Sealing cover
Bolt M5*25
Lable
Rivet
Bolt M4*8
Reversing Knob
Steel ball spring
Steel ball
Reversing valve
O-ring 12.5*1.8
Copper tube
O-ring 18*1.8
Exhaust cover
Trigger
Trigger pin
Front handle sheath
Rear handle sheath
Reverse pin
O-ring 2.5*1.5
End cap stopper
Pin stopper
Pin 1.5*13
O-ring 5*1.8
Compressed spring
Air inlet plug
Spring washer 4
Note:
If you need spare parts of this model, pls feel free to contact us or the distributor where you bought this tool. Tks!