Ryobi RAIW12 Operation manual

AIR IMPACT WRENCH (TWIN HAMMER)
OWNER’S OPERATING MANUAL
RAIW12

English
1. Anvil
2. Hammer cage
3. Gun body
4. Trigger
5. Regulating indicator
DESCRIPTION
6. Air inlet plug
7. Adj. screw
8. Oil hole

Important!
It is essential that you read the instructions in this manual before
operating this machine.
Subject to technical modifications.

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GENERAL SAFETY RULES
■Always wear personal protective safety glasses,
gloves, ear protectors, face mask or respiratory
equipment and protective clothing.
■Always ensure machine is switched off before
connecting to air supply.
■Disconnect any machine from the air supply before
changing blades or discs, and before servicing any
type of machine.
■Do not wear watches, rings bracelets or loose clothing
when using air tools.
■Do not overload the machine. Allow the tool to operate
at its optimum speed for maximum efficiency.
■Do not increase the air pressure above the
manufacturers recommended level, as excessive
overload can cause the machine casing to split. Also
this creates excessive wear on moving parts and
possible failure.
■In the interests of safety and possible damage to the
machine/operator, always ensure that the machine
has stopped before putting it down after use.
■Always ensure that the accessories such as blades,
discs, sockets, etc. are rated/designed for use with the
machine. Also correctly and securely fastened before
connecting the machine to the air supply.
■Ensure you read, understand and apply safety
instructions before use.
■Keep children away from the tool and workplaces
when using the tools.
■Air tools are not generally insulated and should not
come in contact with electric power sources.
■Air tools should not be used in a potentially explosive
environment.
■Disconnect the tool from the energy source before
changing or adjusting the inserted tool.
■Pay attention to the risk of hair or loose clothing being
drawn in or trapped in the tool.
■Pay attention to the risk of being injured if hands are
not kept away from nut runner sockets.
■Pay attention to high speed splinters being emitted
from impact wrenches in case of nut runner socket
failure.
■Pay attention to the whipping compressed air hose.
■Unexpected direction of inserted tool movement can
cause a hazardous situation.
■Use only sockets and adapters which are in good
condition and are intended for use with air tools.
■Make sure the assembly air tool is securely fixed on a
suspension device, if used.
■Unsuitable postures may not allow counteracting of
normal or unexpected movement of the tool.
■Unexpected tool movement due to reaction forces or
breakage of inserted tool may cause injuries.
■Ensure that the pressure of the air or fluid supply is
not lower than the lowest pressure specified by the
manufacturer for clutch-controlled assembly tools and
make sure that the air or fluid supply pressure does
not fall after the clutch has been set.
■Support handle and reaction bar are not required for
this product.
■The spare parts would not affect the health and safety
of the operator.
SYMBOLS
Wear ear protection
Wear eye protection
Please read the instructions carefully before
starting the tool.
SPECIFICATIONS
Square drive 12.5 mm (1/2”)
Capacity Bolt Size 16 mm (5/8”)
No-load speed 7,500 rpm
Max torque 567N.m (420ft/lb)
Avg. air consumption 142.5 L/min (5 cfm)
Operating pressure 90 psi (6.3bar)
Air inlet size 6.35 mm (1/4”)
Air hose ID 9.52 mm (3/8”)
Weight 2.6 kg (5.70 lb.)
A weighted sound
pressure level
91.6 dB + 3 dB
Sound power level 102.6 dB + 3 dB
Vibration value 4.35 m/s2
Uncertainty 0.505 m/s2
Noise Emission Values is in accordance with EN ISO 4871
and EN ISO 15744.
Vibration emission value is in accordance with EN 12096,
EN 28662-1 and EN ISO 8662-7.

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APPLICATIONS
The tools has durable twin-hammer impact wrench
mechanism, pressure-feed lubrication, adjustable power
regulator, variable speed, high torque, front exhaust, sheer
power and performance features to tackle the toughest
jobs with ease and proven durability and economy. The
product is used as wrench, any other use is forbidden.
AIR SUPPLY AND OPERATION
■Ensure air valve (or trigger) is in the “off” position
before connecting to the air supply.
■Required air pressure of 90psi, and an air flow
according to specification.
■Connect the tool to the air hose.
■Press the trigger to operate the tool.
■DO NOT use any additional force upon the tool.
■DO NOT allow wrench to free run for an extended
period of time as this will shorten its life.
■Release the start and stop device in the case of an
interruption of the energy supply.
■Disconnect tools from the energy source before
changing accessories or making adjustments.
■Place the socket over the subject nut and depress the
trigger to operate the tool.
■To change direction push the button at the top of the
handle. Direction of "R" for reverse and “F” for forward.
■The flow of air may be regulated by adjusting flow
valve at the base of the handle.
WARNING
Ensure the air supply is clean and does not exceed
90psi while operating the tool. Too high an air pressure
and unclean air will shorten the product life due to
excessive wear and may be dangerous, causing
damage and/or personal injury.
LUBRICATION
An automatic in-line filter-regulator-lubricator is
recommended (Fig. 6) 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.
If 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 correct 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!
See Figure 6.
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 the air supply is clean and does not exceed
90psi while operating the tool. Too high an air pressure
and unclean air will shorten the product life due to
excessive wear, and may be dangerous causing
damage and/or personal injury.
■Line pressure should be increased to compensate for
unusually long air hoses (over 8 metres). The hose
diameter should be 9.52 mm (3/8”) I.D.
■Keep hose away from heat, oil and sharp edges.
Check hose for wear, and make certain that all
connections are secure.
■The flow of air may be regulated by adjusting flow
valve at the base of the handle.
■An inserted tool that is exposed to heavy strains
and can after a long period of use break due to
fatigue
■That unexpected tool movement or breakage
of inserted tool may cause injuries to the lower
limbs.
■Holding the inserted tool by the free hand can
be a source of vibration damage. This practice is

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forbidden.
■DO NOT use worn, or damaged tool.
■Loss of power or erratic action may be due to the
following:
– 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
– Grit or gum deposits in the tool 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.
MAINTENANCE
■Keep the tool safe by regular maintenance.
■Always keep your air tool clean and lubricated. Daily
lubrication is essential to avoid internal corrosion and
possible failure.
■Drain the air tank daily. Water in the air line will
damage the tool.
■Clean air inlet filter weekly.
■Lubricate the air tool daily with a few drops of air tool
oil dripped into the air inlet.
■Maintenance shall be taken weekly.
■If the tool cannot be used anymore, make sure to
dispose of it so as not to impose hazards on people
and the environment.
■Only lubricants (air tool white oil) recommended by the
manufacturer should be used.
TROUBLESHOOTING
WARNING
If any of the following symptoms appears during your
operating, stop using the tool immediately, or serious
personal injury could result. Only 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.
PROBLEM: Tool runs at normal speed but fails under
load.
POSSIBLE CAUSES
■Motor parts worn.
■Cam clutch worn or sticking due to lack of lubricant.
REMEDIES
■Lubricate 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 tool requires
1⁄2 ounce of oil.
Grease lubrication
NOTE: Heat usually indicates insufficient grease in
chamber. Severe operating conditions may require
more frequent lubrication.
PROBLEM: Tool runs slowly. Air flows slightly from
exhaust.
POSSIBLE CAUSES
■Motor parts jammed with dirt particles.
■Power regulator in closed position.
■Air flow blocked by dirt.
REMEDIES
■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.
PROBLEM: Tools will not run. Air flows freely from
exhaust
POSSIBLE CAUSE
One or more motor vanes stuck due to material build
up.
REMEDIES
■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
■If tool remains jammed return to service centre.
PROBLEM: Tool will not shut off.
POSSIBLE CAUSE
‘O’ rings throttle valve dislodged from seat inlet valve.
REMEDY
Replace ‘O’ ring .
NOTE: Repairs should be carried out by a qualified
person.

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PARTS LIST
No. Description No. Description No. Description No. Description
1 Warning Label 13 Inlet Spring 25 Rotor 37 O-ring 7.65x1.78
2 Oil Inlet cup 6 14 Air Inlet Plug 26 Rotor Blade 38 Retainer ring
3 Steel ball 3.175 15 Dustproof Cover 27 Pin 39 Anvil Bushing
4 Adj.Spring 16 Housing 28 Cylinder 40 Washer
5 Air volume regulator 17 Bolt M8x8 29 Front Plate 41 Gasket
6 O-ring 10.6x1.8 18 Trigger 30 Bearing R8 42 Hammer Cage
7 Valve Sleeve 19 Adj. Screw Cap 31 Gasket 43 Washer 10#-24
8 Pin 20 Bolt M6x10 32 Washer 44 Bolt 10#-24
9 Valve Stem 21 Seal Washer 33 Hammer Dog 45 Rubber grip
10 Throttle valve bushing 22 Retainer ring 10 34 Hammer Cage 46 Hex wrench M5
11 O-ring 7.6x1.8 23 Bearing 6001 35 Hammer Pin 47 Quick coupler
12 Valve stem Screw 24 End Plate 36 Anvil 48 Oil pot

TECHTRONIC INDUSTRIES (AUSTRALIA) PTY. LTD.
Level 1. 666 Doncaster Road,
Doncaster, Victoria 3108
Australia.
Tel: [phone] Fax No.: 613 9840 6133 www.ryobi.com.au