Ryobi RAD38 Operation manual

REVERSIBLE AIR DRILL
OWNER’S OPERATING MANUAL
RAD38

English
1. Chuck
2. Trigger
3. Reverse Valve
4. Exhaust Deflector
DESCRIPTION
5. Air Inlet
6. Air Inlet Plug
7. Chuck Screw

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.
■Unsuitable postures may not allow counteracting of
normal or unexpected movemetn of the power tool.
■The spare parts would not affect the health and safety
of the operator.
■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.
■Attention should be taken on the break-through when
the drill bit passes through the material being drilled.
■Make sure drill or taper is securely fixed on a
suspension device, if used.
■Release the start and stop device in case of an
interruption of the energy supply.
SYMBOLS
Wear ear protection
Wear eye protection
Please read the instructions carefully before
starting the tool.
SPECIFICATIONS
Drilling capacity 9.35 mm (1/4")
No-load speed 1,800 rpm
Avg. air consumption 114 L/min (4 cfm)
Operating pressure 90 psi (6.3 bar)
Air inlet size 6.35 mm (1/4”)
Air hose 9.52 mm (3/8”)
Weight 1.1 kg
A weighted sound
pressure level
79.9 dB + 3 dB
Sound power level 90.9 dB + 3 dB
Vibration value 2.17 m/s2
Uncertainty of
measurement
0.255 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 and EN 28662-1.
APPLICATION
Designed for drilling, honing and hole sawing, and other
heavy duty application. The features of the tool include:
reversible and keyless air drill, durable lightweight
aluminum housing, variable speed trigger, exhaust, and a
quick coupler. 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 90 psi, and an air flow
according to specification.
■Disconnect the tool from the energy source before
changing blades or making adjustments.

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■Connect the tool to the air hose.
■Press trigger to operate the tool.
■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.
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. 7) 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.
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.
IMPORTANT!
See Figure 7.
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
Drain the air tank daily. Water in the air line will damage
the tool.
■Clean air inlet filter weekly.
■Line pressure should be increased to compensate for
unusually long air hoses (over 8 meters). The hose
diameter should be 9.52 mm (3/8”) I.D.
■The high reaction torque can be developed in the case
of stalling. Stalling can be caused by excessive loads
being applied to the drill bit, the drill bit snags on the
material being drilled into or when the drill bit breaks
through the material being drilled.
■In order to minimize the hazard due to reaction
torque, operate the tool with two hand and grip
tightly
■The unexpected tool movement or breakage of
inserted tool may cause injuries.
■There is a risk related to the rotated to the rotating
chuck or drill bit.
■Keep hose away from heat, oil and sharp edges. Check
hose for wear, and make certain that all connections
are secure.
■Air tools should not be used in a potentially explosive
environment.
MAINTENANCE
WARNING
Disconnect tool from air supply before changing
accessories, servicing or performing maintenance.
Replace or repair damaged parts. Use genuine parts
only. Non-authorized parts may be dangerous.
■Keep the tool safe by regular maintenance.
■Lubricate the tool daily with a few drops of air tool oil
dripped into the air inlet.
■Clean the tool after use. Do not use worn out or
damaged sockets.
■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

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strainer and clean it.
■When not in use, disconnect from air supply, clean tool
and store in a safe, dry, childproof location.
■If the tool cannot be used anymore, make sure to
dispose of it so as not to impose hazards to people
and the environment.
■Always keep your air tool clean and lubricated. Daily
lubrication is essential to avoid internal corrosion and
possible failure.
■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
14.20 mL (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: Tool will not run. Air flows freely from
exhaust.
POSSIBLE CAUSE
One or more motor vanes are stuck due to material
build up.
REMEDIES
■Pour air tool lubricating oil 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.
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 Housing 10 Bushing 19 Cylinder 28 Gear shaft
2 Bolt 11 Reverse Lever 20 Rotor Blade 29 Bearing 6201z
3 Exhaust Deflector 12 O-ring 11.5*1.8 21 Steel wire 30 Clamp nut
4 Air Inlet plug 13 Spring 22 Rotor 31 Washer
5 Anti-dust cap 14 Trigger 23 Washer 32 Chuck
6 Vlave stem 15 Bolt M4*8 24 Washer 33 Chuck screw
7 O-ring 4*2 16 Washer 25 Gear wheel 34 Oil pot
8 O-ring 4*1.1 17 Bearing 262zz 26 Idle Gear 35 Quick coupler
9 O-ring 12*3 18 Cylinder cap 27 Idle Gear Pin 36 Rubber grip

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