116 & 136GL R.A. Series Extended
Right Angle Grinders
Series:
116, 136
Grinder:
Throttle:
Lever
L
Exhaust Terminations:
Front
F
Rear
R
Side
S
Generation:
Concept
Second
B
ThirdC
RPM:
135150165
For additional product information visit our website at http://www.clecotools.com
NORTH AMERICA
CooperTools
P.O. Box 1410
Lexington, SC 29071
XXX
GXXL-
XXXA-XXX
Guard:
3
4
Terminations:
3
4
5
6
6M
Wheel Type:
D
W
C
Model:
A
EUROPE
Cooper Power Tools GmbH & Co.
Postfach 30
D-73461 Westhausen
3/16
1/4
5/16
3/8
6mm
3/8-243T
Type 27
Type 1 Wheel
Collet
Right Angle
3 In.
4 in.
1
Safety Recommendations
For your safety and the safety of others, read and understand the
safety recommendations before operating any grinder.
Always wear protective equipment and clothing.
WARNING!
Impact resistant eye protection
must be worn while operating
or working near this tool.
Caution: Faceshields do not provide unlimited protection against
flying particles and are not to be considered as eye protection. ANSI
Z87.1 states that separate eyewear shall be used. For additional
information on eye protection, refer to Federal OSHA Regulations,
29 CFR, Section 1910.133, Eye and Face Protection, and ANSI
Z87.1, Occupational and Educational Eye and Face Protection. This
standard is available from the American National Standards Institute, Inc., 11 West 42nd Street, New York, NY 10036.
CAUTION!
Personal hearing protection is
recommended when operating
or working near this tool.
Hearing protection is recommended in high noise areas (above 85
dBA). Close proximity of additional tools, reflective surfaces, process noises, and resonant structures can substantially contribute to
the sound level experienced by the operator. Proper hearing conservation measures, including annual audiograms and training in the
use and fit of hearing protection devices may be necessary. For
additional information on hearing protection, refer to Federal OSHA
Regulations, 29 CFR, Section 1910.95, Occupational Noise Exposure, and American National Standards Institute, ANSI S12.6,
Hearing Protectors.
Installation of a filter-regulator-lubricator in the air supply line is
highly recommended.
Before the tool is connected to air supply, check throttle for proper
operation, i.e., throttle moves freely and returns to closed position.
Being careful not to endanger adjacent personnel, clear air hose of
accumulated dust and moisture. Use protective barriers where
necessary — hot sparks can burn. Barriers also help reduce noise
levels. Before removing tool from service or changing accessories,
make sure air line is shut off and drained of air. This will prevent tool
from operating if throttle is accidently engaged. Do not use tool to
drain residual air from air line, instead use of a self-relieving valve
located near tool is highly recommended.
The speed rating and warning information on the tool should be
maintained or replaced for legibility in the event of damage. Before
installing an accessory or a grinding wheel, after all tool repairs, and
whenever a grinder is issued for use, check the free speed of the
tool with a tachometer to make sure actual free speed at 90 psig
does not exceed rated free speed stamped on tool. Grinders in use
on the job must be checked at least once every 20 hours of operation,
or once a week, whichever is most frequent.
Guard (if wheel type grinder) must be securely attached to the
grinder with the bolt, nut and lockwasher in place and torqued to 3040 in. lbs.
TACHOMETER
0
1
2
6
3
5
4
WARNING AND
INSTRUCTION LABEL
202409
203185
CAUTION LABEL
CAUTION
SERIAL NO.
MODEL
Cleco
202101 & 869974
WARNING TAGS
CAUTION!
WARNING!
Personal hearing protection is
recommended when operating
or working near this tool.
Impact resistant eye protection
must be worn while operating
or working near this tool.
Read Operating Instructions carefully. Follow
the Safety Recommendations for your safety
and the safety of others.
Hearing protection is recommended in high noise
areas (above 85 dBA). Close proximity of other
tools, reflective surfaces, process noises, and
resonant structures can substantially contribute
Do not remove this tag until
the operator of this tool has
read these safety precautions.
to the sound level experienced by the user.
WARNING
!
Repetitive work motions and/or vibration
can cause injury to hands and arms.
Use minimum hand grip force consistent with
OVER
Avoid repeated bending of wrists and hands.
proper control and safe operation.
Keep body and hands warm and dry.
Avoid anything that inhibits blood circulation.
Avoid continuous vibration exposure.
Keep wrists straight.
• Gloves and other protective clothing should be worn as
required, unless they create a greater hazard.
• Do not wear loose fitting clothing, or clothing that may
restrict movement, become entangled or in any way
interfere with the safe operation of the grinder.
!
WARNING
Wear respirator where
necessary.
Grinding or other use of this tool may produce hazardous fumes
and/or dust. To avoid adverse health effects utilize adequate ventilation and/or a respirator. Respirators should be selected, fitted,
used and maintained in accordance with Occupational Safety and
Health Administration and other applicable regulations. Read the
material safety data sheet on any materials involved in the grinding
process.
Cleco grinders are designed to operate on 90 psig (6.2 bar) max.
air pressure. If the tool is properly sized and applied, higher air
pressure is unnecessary. Excessive air pressure increases the
loads and stresses on the tool parts and may result in breakage.
2
WARNING!
Fragments from an abrasive wheel
can cause serious injury or death.
Do not operate without proper
wheel guard in place.
INSPECT GRINDING WHEEL OR ACCESSORY
Fragments from a grinding wheel, mounted wheel or carbide burr
that breaks or comes apart while rotating can cause serious
injury or even death. Inspect grinding wheel or accessory. Check
the maximum safe RPM marked on wheel, accessory or package.
Never use wheels or accessories rated at or below actual tool
speed. Cracked, dropped, faulty, or bent accessories are danger-ous. Suspect accessories should not be used and should be
disposed of. Look for cracks, chips, water stains, or signs of abuse
or improper storage. Causes of grinding wheel failures have been
traced to such factors as:
• Dropping, bumping, or abuse (careless handling of the
grinder)
• Improper mounting
• Imbalance
• Improper shipment or storage, or age
• Mismatched speed ratings
• Exposure to water, solvents, high humidity, freezing, and
extreme temperatures
Safety Recommendations
Wheels or accessories known to have been subjected to any of
the conditions above can burst violently and should be destroyed
rather than risk their use by someone who may not notice that
they are damaged.
Do not operate 116/136 RA grinder without a wheel guard if used
with Type 1 (straight) or Type 27 (depressed center) wheels.
Guard must not be modified, and any guard damaged or bent must
be replaced. Grinder must be used such that opening in guard is
away from operator.
CHECK FLANGE
A Type 1 wheel grinder's flanges must be relieved, free
of nicks that might cause stress concentrations on the
wheel which can cause cracks. Blotters must be used
and be as large in diameter as the flanges. Diameters of
driving and outer flange must be equal and measure at
least 1/3 dia. of the wheel. If flanges are less than 1/3 dia.
of wheel, do not use grinder or select proper wheel.
Spindle end nut must be tightened firmly against outer
flange to insure necessary friction against blotters to
drive wheel. Caution: Overtightening can cause wheel breakage. Type
1 breakage can also occur if:
• Outer flange is left off
• Outer flange is reversed
• A washer is used in place of either flange
• Outer and driving flange are different diameters
• Blotters are not used
• Wheel is side loaded (Grind on periphery only!)
WARNING
!
Extreme caution should
be exercised not to use
excessive side pressure.
Excessive side pressure
can break the wheel and
result in severe injury.
Guard not
shown for
clarity.
GRINDING
FACE
Blotter
Relieved flanges
minimum 1/3 dia.
of wheel dia.
TYPE 1
WHEEL
Do not grind with
side of Type 1 wheel.
keep a wheel from being centrally mounted or seated properly
against the driving flange. The spindle end nut should be tightened
to prevent wheel slippage and satisfactorly transfer the driving
torque of the spindle to the wheel through the adapter assembly.
COLLET EQUIPPED TOOLS
The collet should be checked to assure it is in good operating
condition and is secure to the tool. Accessories should be inserted
to full depth of the collet. Avoid excessive overhang and/or exces-
sive down force that can result in vibration or a bent spindle.
Possible loss or ejection of accessory can result. Collet equipped
116/136 RA grinders are intended for use with small carbide burrs
and mounted wheels only. Do not use these tools for Type 1 or Type
27 wheel grinding. If your application calls for a Type 1 or Type 27
wheel, consult your Cleco representative for a wheel grinder equipped
with the proper wheel guard.
BEGINNING GRINDING OPERATION
Before using or after mounting a wheel or accessory, tool must be
run for one minute in a protected enclosure to check the integrity of
1/3 Dia.
of wheel
Relieved Flange
TYPE 1
Check spindle
and driving
flange on grinders used with
Type 27 (depressed center)
wheels.
Spindles must
not be bent and
threads must be
free of any damage that might
the wheel or accessory. During this time or any other time, no one
should stand in front or in line of the wheel or accessory. When
starting work with a cold wheel, apply it gradually to the workpiece
until it becomes warm. Do not continue to use a grinder if:
• It is not equipped with proper wheel guard
• It starts to vibrate
• You sense changes in tool speed or an unusual increase
in noise that would indicate tool is running at excessive
speed
• You notice excessive end play in spindle
• You hear any unusual sound from grinder
RETURN THE TOOL TO THE TOOL CRIB FOR SERVICE IMMEDIATELY!
Some individuals may be
WARNING
!
Repetitive work motions and/or vibration
may cause injury to hands and arms.
Use minimum hand grip force consistent
with proper control and safe operation.
Keep body and hands warm and dry.
Avoid anything that inhibits blood circulation.
Avoid continuous vibration exposure.
Keep wrists straight.
Avoid repeated bending of wrists and hands.
susceptible to disorders
of the hands and arms
when performing tasks
consisting of highly repetitive motions and/or
exposure to extended vibration. Cumulative
trauma disorders such
as carpal tunnel syndrome and tendonitis may be caused or
aggravated by repetitious, forceful exertions of the hands and arms.
Vibration may contribute to a condition called Raynaud's Syndrome.
These disorders develop gradually over periods of weeks, months,
and years. It is presently unknown to what extent exposure to
vibrations or repetitive motions may contribute to the disorders.
Hereditary factors, vasculatory or circulatory problems, exposure to
cold and dampness, diet, smoking and work practices are thought
to contribute to the conditions.
Any tool operator should be aware of the following warning signs
and symptoms so that a problem can be addressed before it
becomes a debilitating injury. Any user suffering prolonged symptoms of tingling, numbness, blanching of fingers, clumsiness or
weakened grip, nocturnal pain in the hand, or any other disorder of
the shoulders, arms, wrists, or fingers is advised to consult a
physician. If it is determined that the symptoms are job related or
aggravated by movements and postures dictated by the job design,
it may be necessary for the employer to take steps to prevent further
occurrences. These steps might include, but are not limited to,
repositioning the workpiece or redesigning the workstation, reassigning workers to other jobs, rotating jobs, changing work pace,
and/or changing the type of tool used so as to minimize stress on
the operator. Some tasks may require more than one type of tool to
obtain the optimum operator/tool/task relationship.
The proper selection of the correct type of grinder is an important
ergo nomic consideration. Each application should be carefully
considered and the tool chosen that will minimize the stresses on
the operator that can lead to the onset of cumulative trauma
disorders. Some tasks require more than one type of tool to obtain
the optimum operator/tool/task relationship. Cleco has a complete
selection of tools including vertical, straight, angle, and extended
grinders that make possible the correct ergonomic match of the
operator, tool, and task.
The following suggestions will help reduce or moderate the effects
of repetitive work motions and/or extended vibration exposure:
3
Safety Recommendations
• Use a minimum hand grip force consistent with proper
control and safe operation
• Keep body and hands warm and dry (cold weather is
reported to be a major factor contributing to Raynaud's
Syndrome)
• Tasks should be performed in such a manner that the
wrists are maintained in a neutral position, which is not
flexed, hyperextended, or turned side to side
• Stressful postures should be avoided — select a tool
appropriate for the job and work location
• Avoid highly repetitive movements of hands and wrists,
and continuous vibration exposure (after each period of
operation, exercise to increase blood circulation)
•Use quality accessories (the primary source of vibration
when using a grinder is an accessory that is out of
balance, out of round, untrue, or possibly any combina-
tion of all three; avoid excessive overhang of accessory
in collet)
• Use carbide burrs that are sharp, as dull burrs require
more force and effort to remove material
• Keep tool well maintained and replace worn parts (a
preventive maintanance program with scheduled inspec tions is highly recommended)
Work gloves with vibration reducing liners and wrist supports are
available from some manufacturers of industrial work gloves. Tool
wraps and grips are also available from a number of different
manufacturers. These gloves, wraps, and wrist supports are designed to reduce and moderate the effects of extended vibration
exposure and repetitive wrist trauma. Since they vary widely in
design, material, thickness, vibration reduction, and wrist support
qualities, it is recommended that the glove, tool wrap, or wrist
support manufacturer be consulted for items designed for your
specific application. WARNING! Proper fit of gloves is important.
Improperly fitted gloves may restrict blood flow to the fingers and
can substantially reduce grip strength.
USE QUALITY ABRASIVE WHEELS
The primary source of vibration when using a portable grinder is an
abrasive wheel that is out of balance, out of round, untrue, or
possibly any combination of all three.
The use of quality abrasive wheels which are well balanced, round,
and true is highly recommended as they have been found to
significantly reduce vibration. Some abrasive wheels lose their
balance, roundness, and trueness as they wear from use. Because
of the abusive nature of the vibration caused by out of balance, out
of round, and untrue condition of some abrasive wheels, it is felt that
these wheels are more suseptible to failure. Excessive vibration
may signal eminent wheel failure. Out of balance abrasive wheels
are dangerous. Flat spotting of the abrasive wheel, caused by
grinding the wheel to a stop after the power has been shut off can
4
Avoid
result in changes to the balance and shape of the wheel. Be sure the
grinding wheel has stopped before setting the tool down. Set the tool in
a tool rest or tool holder when not in use.
WIRE BRUSHES
If a grinder is used for wire brushing applications the same
problems of balance, roundness, and truth as experienced with
abrasive wheels prevail. Use quality wire brushes.
USE A PREVENTIVE MAINTENANCE PROGRAM
Tool abuse or poor maintenance procedures can amplify and
contribute to the vibration produced by the abrasive wheel. A
preventive maintenance program featuring scheduled periodic
inspections and proper maintenance is the best way to assure
safety in your portable grinding operations. A well managed program can, for example, detect such things as speed variations due
to wear, flanges or spindles that have been damaged from abuse,
or bad bearings damaged by foreign matter or lack of lubrication.
Problems such as these can affect the wheel trueness when the
grinder is running and contribute to the vibration. Rotor blades that
are worn or chipped can lock up the motor and damage motor
components. Rotor blades should be checked periodically and
replaced if they measure less than 3/16" (4.7mm) at either end.
Replace if 3/16"
(4.7mm) or less
at either end.
Proper repair procedures and the use of original Cleco service parts
and bearings rather than substitutes will return the tool to factory
specifications of precision and balance, and minimize vibration.
PROPER LUBRICATION
An automatic in-line filter-regulator-lubricator is recommended as
it increases tool life and keeps the tool in sustained operation. The
in-line lubricator should be regularly checked and filled with a good
grade of 10W machine oil. Proper adjustment of in-line lubricator is
performed by placing a sheet of paper next to exhaust ports and
holding throttle open approximately 30 seconds. Lubricator is
properly set when a light stain of oil collects on paper. Excessive
amounts of oil should be avoided.
STORAGE
In the event it becomes necessary to store tool for an extended
period of time (overnight, weekend, etc.), it should receive a generous amount of lubrication at that time and run for several seconds
to distribute oil before disconnecting from air supply. This will
reduce corrosion and displace water that may be trapped in tool.
This information is a compilation of general safety practices obtained from various sources available at the date of production.
However, our company does not represent that every acceptable
safety practice is offered herein, or that abnormal or unusual
circumstances may not warrant or require additional procedures.
Your work may require additional specific safety procedures. Follow
these procedures as required by your company. For more information, see the latest edition of ANSI B186.1, Safety Code for Portable
Air Tools, and ANSI B7.1, Safety Requirements for the Use, Care,
and Protection of Abrasive Wheels, available from the American
National Standards Institute, Inc., 11 West 42nd Street, New York,
NY 10036.
116 & 136GLB & GLC
RIGHT ANGLE
GRINDER AND
SANDER EQUIPMENT
Relieved Flanges
1/3 Dia. of Wheel
Flange Dias. Equal
Clean, no nicks
or burrs
Type 1
Driving
Flange
Wheel Blotters
Both Sides
TYPE 1 WHEEL with 3/8" Hole
Wheel Guard
Spindle
End Nut
Spacer(s) 864159
Wheel Thickness No. Required
1/8" 2
3/16" 1
1/4" None
Driving
Flange
Spindle
End Nut
Spindle
Adapter
4" Rubber
Pad
Pad Nut
Wheel Guard
Wheel
Blotter
TYPE 27 WHEEL with 3/8" Hole
CONTOUR SANDING PAD
TOOL
APPLICATION
4" Type 27
with 3/8" Hole
3" Type 27
with 3/8" Hole
3" Type 1 with
3/8" Hole
4" Type 1 with
3/8" Hole
TOOL
APPLICATION
4" Sanding Pad
SPINDLE
3/8-24
3/8-24
3/8-24
3/8-24
SPINDLE
ADAPTER
3/8"-24 to 5/8"-11
869495
DRIVING
FLANGE
202225
202225
202223
202223
PAD
889271
OUTER
FLANGE
not applicable
not applicable
865991
865991
PAD NUT
849259
NUT
843422
843422
203409
203409
WRENCH
849834
WRENCH
849834
849022
849837
849022
849837
849022
849837
849022
GUARD
202227
202226
202226
202227
5
OPERATING INSTRUCTIONS
READ SAFETY RECOMMENDATIONS
BEFORE CONNECTING TOOL.
OPERATION
The 116 and 136 RAB Series Right Angle Grinders are designed
to operate on 90 psig (6.2 bar) maximum air pressure, using a 1/
4" hose up to 8' in length for the 116 and a 5/16" hose for the 136.
If additional length is required, the next larger hose size may be
connected to the 8' whip hose.
LUBRICATION
An automatic in-line filter-lubricator is recommended as it increases tool life and keeps the tool in sustained operation. The inline lubricator should be regularly checked and filled with a good
grade of 10W machine 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.
Application of the tool should govern how frequently it is greased.
It is recommended that the right angle gears receive a generous
amount of NLGI 2-EP grease through the grease fittings after 40
hours of operation.
STORAGE
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 and again
when returned to service. The tool should be stored in a clean and
dry environment.
allows the pinion gear to engage the driven gear. Screw a 3/8-24
nut on the spindle and hold with a box end wrench. Put a spacer
over the spindle needle bearing and clamp the housing in a vise.
Now proceed to loosen the spline adapter with a 14mm six (6)
point deep socket.
The pinion bearing retainer, No. 863564, may be removed by
utilizing a 5/8" hex nut and a 5/8" deep socket. Drop the hex nut
over the pinion shaft and engage the hex in the bearing retainer
and unscrew the retainer using the deep socket. Unscrew the
plug, No. 842366, and using a suitable driver, drive the pinion, No.
202624, and related bearings out of the angle head.
REASSEMBLY
The tool is reassembled in the reverse order of disassembly.
Wash all parts in a solvent and inspect for damage or wear. Rotor
blades should be replaced at every repair cycle or if they measure
less than 3/16" (4.7mm) at either end. Replace bearings that are
rough or have excessive end play.
IMPORTANT: When replacing pinion gear 202624 or driven
gear 202201, both gears should be replaced for best results.
When reassembling the spindle, No. 202194, bearing, No. 202197,
driven gear, No. 202201 and spindle lock nut, No. 202199, use
Locktite #271 on the spindle lock nut No. 202199. Also use #271
Locktite on the Spindle Bearing Cap No. 202196.
Slip pinion needle bearing, No. 869864, (unstamped end first) on
the pinion, No. 202624, and press (press on the bearing's stamped
end) the bearing in to a depth of 7/8" from the face of the bearing
bore. Install pinion ball bearing, No. 202333, (shield to the rear) and
bearing retainer, No. 863564, in the head and tighten retainer
securely using the 5/8" hex nut and 5/8" deep socket. Using a
suitable driver through the hole in the top of the head, drive the
pinion back to make sure it is seated properly in the head.
SERVICE INSTRUCTIONS
DISASSEMBLY
To disassemble the tool, unscrew the right angle head (left hand
threads). This will allow the removal of the motor unit from the
backhead.
To remove the splined nut, 202236, use a 14mm six (6) point box
wrench and a 3/16" hex wrench. Insert the hex wrench into the
rotor shaft and unscrew the nut. Use a suitable driver to drive the
front rotor shaft out of the front rotor bearing. After removing the
cylinder and rotor blades, the rear rotor shaft may be driven out of
the rear rotor bearing.
To disassemble the right angle head, unscrew the spindle bearing
cap. This will permit the removal of the spindle assembly.
Use a 14mm six (6) point deep socket to remove the spline
adapter, No.202625. If the pinion is not engaging the driven gear
because of wear, remove the bearing, 202197, from the spindle
and put the driven gear back on the spindle. Insert the spindle and
driven gear back into the housing. With a brass hammer drive the
spindle needle bearing, No. 202198, out of the housing until it
Important: When installing front rotor bearing. No. 202332, the
shielded side should be assembled toward the rear of the tool.
Install the front rotor bearing in the front bearing plate and measure
the distance from the face of the bearing plate to the inner race of
the bearing with the bearing race loaded rearward. Select or fit by
sanding a rotor collar .001" (.025mm) to .002" (.050mm) longer
than this measurement. Install the rotor blades, cylinder, rear
bearing plate and rear bearing on the rotor. After final assembly of
the motor unit, the cylinder should be held securely but not tightly
between the two (2) plates. The rotor should not rub either plate.
When installing the splined nut, No. 202236, on the rotor, the
undercut end should be toward the bearing.
When installing a motor into a rear exhaust backhead, the steel
ball located in the front plate must line up with the groove in the
backhead. Tighten all joints securely during reassembly. Head
positioning spacers are used to position the right angle head in
relationship to the throttle lever. Each .005" added or subtracted
will change the location of the head approximately 30 degrees.
Place a few drops of 10W machine oil in the air inlet to ensure
positive lubrication of all motor parts as soon as air is applied.
CAUTION: After the grinder is reassembled, be sure to check the
free speed (R.P.M.) for proper speed with a dependable tachometer before returning the grinder to service.
6
116 & 136 EXTENDED RIGHT ANGLE HEAD
Head Positioning
Spacers
842366
202198
863926 .005"
869559 .010"
869560 .020"
202193
869864
1/4" Maximum Wheel Thickness
202333
TYPE 1 WHEEL
3/8-24 Spindle
863564
202196
202624
202625
202223
202235
865991
202236
203409
867926
Side Exhaust Only
869475
Muffler
Model Part No.
116202338
136869452
Side Exhaust Deflector
Type Tool Part No.
Type 1 & 27 202203
Collet 202204
847234
Front Exhaust Deflector
Type Tool Part No.
Type 1 & 27 202207
Collet 202208
Spindle End Nut - Type 1
Plug
Spindle End Nut - Type 27
"O"-Ring 1-1/8" x 1-1/4"
Collet Lock Nut
3/8" Collet (Opt.)
1/4" Collet (Std.)
Spindle Hex Wrench
Spanner Wrench
9/16" x 11/16" Wrench
5/8" x 3/4" Wrench
Bearing Retainer
.005" Spacer
6mm Collet (Opt.)
Driving flange Spacer (if required)
3/16" Collet (Opt.)
5/16" Collet (Opt.)
Type 1 Outer Flange
"O"-Ring 1-3/16" x 1-5/16"
Muffler
Retainer Ring
.010" Spacer
.020" Spacer
Pinion Needle Bearing
849022
QTY.
1
1
1
1
1
1
1
1
1
2
1
1
**
1
**
1
1
1
1
1
1
**
**
1
* Denotes parts not included in subassemblies.
** Number of spacers required is variable.
The complete angle head can be purchased as a subassembly using the following part numbers.
3/8-24 Spindle - Part No. 201145
3/8-24 Stub Spindle - Part No. 201144
Integral collet - Part No. 201240