Ryobi RADG14 Operation manual

AIR DIE GRINDER
OWNER’S OPERATING MANUAL
RADG14

English
1. Collet nut
2. Collet
3. Gun body
4. Trigger
5. Valve pin
6. Exhaust deector
DESCRIPTION
7. Air inlet plug
8. Quick Coupler
9. Grinding head
10. Wrench
11. Adj. knob

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 air supply.
■ Disconnect any machine from the air supply before
changing accessories, 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
manufacturer's 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 interest of safety and to prevent possible
damage/injury to the machine/operator, always ensure
that the machine has stopped before putting it down
after use.
■ Always ensure that the work piece is firmly secured
leaving both hands free to control the machine.
■ Always ensure that the accessories are rated/designed
for use with the machine and are 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 tools and workplaces.
■Air tools are not generally insulated and should not
come in contact with electric power sources.
■ Insert tool speed should be higher than speed of the
die grinder.
■ Pay attention while working with certain materials that
will create emission of dust and fumes. This will cause
potentially explosive environment.
■ Pay attention to the risk of hair or loose clothing being
drawn in or trapped in the tool.
■ Pay attention to the whipping compressed air hose.
■ Pay attention to the fact that allowed speed of the
mounted point must be lowered due to the increase
of the length of the shaft between the end of the collet
and the mounted point (overhang). Make sure that the
minimum gripping length of 10 mm is observed.
■Die grinders should not be used in an explosive
environment.
■ Check the speed and make a simple check of the
vibration level after each service.
■ Special care has to be taken when assembling the
speed governor or protective devices.
■ Check the speed after each service in relevant cases.
■ 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
Grinder cap 6.35 mm (1/4”)
No-load speed 22,000 rpm
Air consumption 251 L/min (8.8 cfm)
Operating pressure 90 psi (6.3 bar)
Air inlet size 6.35 mm (1/4”)
Air hose ID 9.52 mm (3/8")
Weight 0.65 kg
A weighted sound
pressure level
83.5 dB(A) + 3dB
Sound power level 94.5 dB(A) + 3dB
Vibration value 1.2 m/s2
Uncertainty 0.353 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 8662-13.
APPLICATIONS
The tool is ideal for light weld grinding, porting and
polishing applications. The durable and lightweight
composite housing design also helps reduce vibration.
It has a lever lock throttle for safety. 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.

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■ Connect the tool to the air hose.
■ Press the trigger to operate the wrench.
■ DO NOT use any additional force upon the tool.
■ DO NOT allow tool to free run for an extended period
of time as this will shorten its life.
■ There is the risk of mismatching the diameter of the
shaft of mounted point and that of the collet.
■ There is a risk of excessive vibration levels due to
improper mounting or damaged insert tool.
■ There is a risk of running on of the inserted tool after
the start and stop device has been released.
■ Only permitted insert tools of the correct shaft diameter
are used.
■ Cutting-off wheels and routing cutter wheels shall not
be used.
■ 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.
■ Required air pressure of 90psi, and an air flow
according to specification.
■ For inserting the grinder head to the tool, insert the
grinder head to collet nut.
■ Tighten the collet nut for securing grinder head by the
provided wrench.
■ Before operation, ensure the inserted tool is fixed in
tool.
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 lter-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 lled 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!
If a lter/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 tting 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 or personal injury.
■ Clean air inlet filter weekly.
■ Line pressure should be increased to compensate
for unusually long air hoses (over 8 metres). The
minimum hose diameter should be 6.35 mm (1/4”) I.D.
and fittings must have the same inside dimensions.
■ Keep hose away from heat, oil and sharp edges. Check
hose for wear, and make certain that all connections
are secure.
■ Use the tool only for its intended purpose.
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.
■ Maintenance shall be taken weekly.
■ Drain the air tank daily. Water in the air line will
damage the wrench.
■ If the tool cannot be used anymore, make sure to

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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 qualied 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 ows 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 qualied
person.

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PARTS LIST
No. Description No. Description No. Description No. Description
1 Housing 11 Spring 21 Rotor 31 Front cover
2 Valve bushing 12 Air regulator 22 Rotor Blade 32 Chuck
3 Trigger 13 O-ring 7x2 23 Cylinder 33 Chuck screw
4 Trigger Pin 14 O-ring 12x3 24 Bushing 34 Dustproof cover
5 Spring 15 Screw cap 25 Washer 35 Rubber grip
6 Bolt 2x18 16 Mufe cover 26 Steel ball 2 36 Oil pot
7 Pin 3x24 17 Air inlet 27 Front plate 37 Quick coupler
8 O-ring 4.8x1.6 18 Bearing 626Z 28 Bearing 6000Z 38 Collet 1/8”
9 O-ring 5.6x2 19 End Plate 29 Chuck seat 39 Wrench
10 Valve stem 20 Pin 2x6 30 Retainer Ring 40 Wrench

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