Cleco 1700 Series Installation and operating instructions

1
Operation & Service Manual
823008 2/01
1700 & 1900 Series Vertical Grinders
Wheel Type:
Throttle Terminations:
Vertical
Type:
V
XX
72 77
RPM:
45 60
1700
Series:
17
190019
XXX VB -XX
(Lock Off)
Quick Release
Self Closing Thumb
S
L Lever
Generation:
B Second Sanding ShroudSS
7" Type 27 or 28 Depressed Center Wheel
Depressed Center Wheel
Depressed Center Wheel
9" Type 27
9" Type 28
Type 6 or 11
Type 6 or 11
5"
6"06
05
Cup
Cup
09
11
07
NORTH AMERICA
For additional product information visit our website at http://www.clecotools.com
EUROPE
CooperTools
P.O. Box 1410
Lexington, SC 29071
Cooper Power Tools GmbH & Co.
Postfach 30
D-73461 Westhausen

2
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.
Caution:Faceshieldsdonot provideunlimited protectionagainst
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 Protec-
tion, 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.
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 con-
tribute to the sound level experienced by the operator. Excessive
air pressure (greater than 90 psig) or worn components can also
increase sound level emitted by the tool. Proper hearing conser-
vation 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.
• Gloves and other protective clothing should be worn as
required.
• Do not wear clothing that may restrict movement, become
entangled or in any way interfere with the safe operation of
grinders.
Grinding or other applications of this tool may produce hazard-
ous 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 Occu-
pational Safety and Health Administration and other applicable
regulations. Read the material safety data sheet of any materials
involved in the grinding process.
Cleco grinders should be operated with 90 psig (6.2 bar) max. air
pressure.Excessive airpressureincreases theloadsand stresses
on the tool parts and may result in breakage. Installation of a
filter-regulator-lubricator in the air supply line is highly recom-
mended.
Never use the air hose for supporting, lifting, or lowering the tool.
Use a safety line or cable on the tool when working in elevated
areas.
Before tool is connected to air supply, check throttle for proper
operation, i.e., throttle moves freely and returns to closed posi-
tion. 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 chang-
ing accessories, make sure air line is shut off and drained of air
to prevent the tool from operating if the throttle is accidently
engaged. The use of a self-relieving valve for this purpose is
highly recommended.
Wheel guards are used to prevent serious injury to the operator
in the event of wheel failure and must not be modified in any way.
Any wheel guard that is damaged or bent must be replaced.
Grinders must be held so that the opening in the guard is away
from the operator.
The guard must be attached to the grinder with all bolts, nuts and
lockwashers in place and torqued to 144 - 156 in. lbs..
WARNING!
Impact resistant eye protection
must be worn while operating
or working near this tool.
CAUTION!
Personal hearing protection is
recommended when operating
or working near this tool.
WARNING
!
Wear respirator where
necessary.

3
Safety Recommendations
Speed rating, warning tags and warning labels should be main-
tained or replaced for legibility in the event of damage. Speed
rating, warning tags, and warning labels are available from the
manufacturer.
Before mounting a wheel, after all tool repairs, and whenever a
grinder is issued for use, check the free speed of the grinder with
a tachometer to make certain that the actual free speed at 90 psig
(6.2 bar) does not exceed the rated free speed stamped on the
tool. Grinders in use on the job must be checked at least once
every twenty hours of operation, or once every week, whichever
is more frequent. Checking free speed after the removal of each
worn wheel and before mounting a new wheel is highly recom-
mended.
INSPECT THE GRINDING WHEEL!
Check the maximum safe RPM marked on the wheel. Never use
a wheel rated below the actual tool speed. Inspect the wheel
for cracks or chips, water stains, or signs of abuse or improper
storage. Cracked, chipped or faulty grinding wheels are
dangerous and must not be used. They must be destroyed
rather than risk their use by someone who may not notice that
they are damaged.
Causes of abrasive wheel failures have been traced to such
factors as:
•Dropping, bumping, or abuse (careless handling
of the grinder or wheel)
•Improper mounting
•Imbalance
•Improper shipment or storage
•Exposure to water, solvents, high humidity,
freezing and extreme temperatures
•Mismatched speed ratings
•Age
Abrasive wheels known to have been subjected to any of the
above conditions can violently disintegrate. Never operate
a vertical grinder without proper wheel guard in place.
CHECK FLANGE
Check the grinder spindle and driving flange for signs of damage
or abuse. A vertical grinder driving flange must be flat, unre-
lieved, and free of nicks and burrs. The spindle must not be bent,
and the threads should be free of any damage that might keep
an abrasive wheel and its mount from locating centrally or
seating properly against the driving flange.
ABRASIVE WHEEL MOUNTING & BEGINNING GRINDING
OPERATION
Sufficiently tighten wheel to prevent spin-off. Do not over-
tighten, and do not install wheel by spinning it on by throttling the
tool. This is a dangerous practice and can cause spindle damage
or breakage. Always use a wheel retainer on a Type 6 or 11 cup
wheel.
Before beginning operations or after mounting a wheel, run the
tool for one (1) minute in a protected enclosure to check the
integrity or the wheel. During this time or any other time, no one
should stand in front of or in line of the wheel. When starting work
with a cold wheel, apply it gradually to the workpiece until the
wheel becomes warm.
When the remaining portion of a Type 6 or 11 cup wheel can no
longer be used, do not use a hammer to break up the remaining
"rock" so that it can be removed. This is a dangerous practice and
can lead to spindle damage or breakage. Instead use a back-up
wrench on the flange, and a strap wrench.
DO NOT CONTINUE TO USE A GRINDER IF:
•It is not equipped with the proper wheel guard
•The speed rating of the wheel is less than the
speed of the grinder
•It starts to vibrate
•You sense any changes in tool speed or an
unusual increase in noise output that would
indicate the tool is running at excessive speed
•You notice excessive end play in the spindle
•You hear any unusual sound from the grinder
RETURN THE TOOL TO THE TOOL CRIB FOR SERVICE
IMMEDIATELY!
1
2
3
4
56
0
203208
SPEED RATING
AND WARNING TAG
203011
WARNING TAG
202408
WARNING AND
INSTRUCTION LABEL
OVER
CAUTION!
Personalhearing protection is recommendedwhen operating orworking near this tool.
WARNING!
Impactresistant eye protection mustbe worn while operating orworking 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 to the sound level experienced by the user.
WARNING
!
Repetitivework motions and/or vibration cancause injury to hands and arms. Useminimum hand grip force consistent with propercontrol and safe operation. Keepbody and hands warm and dry. Avoidanything that inhibits blood circulation. Avoidcontinuous vibration exposure. Keepwrists straight.
Avoidrepeated bending of wrists and hands.
Do not remove this tag until the operator of this tool has read these safety precautions.
869974
WARNING TAG
TACHOMETER
WARNING!
Fragments from an abrasive wheel
can cause serious injury or death.
Do not operate without proper
wheel guard in place.

4
Safety Recommendations
Some individuals may be 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 syn-
drome 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 peri-
ods 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.
Tool operators 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, nightly pain in the
hand, or any other disorder of the shoulders, arms, wrists,
or fingers is advised to consult a physician. If it is deter-
mined 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 following suggestions will help reduce or moderate the
effects of repetitive work motions and/or extended vibration
exposure:
•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
•Avoid anything that inhibits blood circulation
—Smoking Tobacco (another contributing factor)
—Cold Temperatures
—Certain Drugs
•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 circu-
lation)
•Use quality abrasive wheels
•Keep tool well maintained and replace worn parts
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 sup-
ports are advertised claiming 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 susceptible to failure.
Excessive vibration may signal imminent wheel failure. Flat
spotting of the abrasive wheel, caused by grinding the wheel to
a stop after the power has been shut off can 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.
WARNING!
Repetitive work motions and/or vibration
can cause injury to hands and arms.
Use minimum hand grip force.
Keep body and hands warm and dry.
Avoid anything that inhibits blood curculation.
Avoid continuous vibration exposure.
Keep wrists straight.
Avoid repeated bending of wrists and hands.
Extension Neutral Flexion Radial Deviation Neutral Ulnar Deviation
Avoid Avoid Avoid OK Avoid OK

5
Safety Recommendations
WIRE BRUSHES
If a grinder is used for wire brushing applications the same
problems of balance, roundness, and trueness 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 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 motor and result in grinding
wheel spinoff, and should be replaced. Rotor blades should be
checked periodically and replaced if they measure less than
7/16" (11mm) at either end.
PROPER LUBRICATION
An automatic in-line filter-regulator-lubricator is recommended
to increase tool life and keep the tool in service. The in-line
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.
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 be run
for several seconds to distribute the oil before disconnecting the
air supply. This will reduce the possibility of corrosion and
displace any water that may be trapped in the tool. Water trapped
in the tool could cause the governor to freeze and malfunction if
tool is exposed to freezing temperatures.
Note: Water in the air system increases tool maintenance costs
and can cause the tool to malfunction when it is stored and/or
operated in freezing conditions.
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.
The governor should be checked periodically to be sure the
governor mechanism is clean, in good operating condition, and
functioning properly. The 1700 and 1900 Series grinders are
equipped with the CLECO SHUT-OFF disc which is designed to
shut the tool down in the event of excessive overspeed. Although
it adds a measure of safety, it should not be considered a
substitute for a wheel guard.
If the tool fails to run it may be due to the overspeed shut-off disk.
Have the tool serviced and check for an overspeed condition.
After a problem causing overspeed is corrected, the disc must be
reset by clicking it to its normal position.
This information is a compilation of general safety practices
obtained from various sources available at the date of produc-
tion. 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 com-
pany.
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 Insti-
tute, Inc., 11 West 42nd Street, New York, NY 10036.
Replace if 7/16"
(11mm) or less
at either end.

6
WARNING
LABEL
2" (50mm)
MAX.
5" (125mm) or 6" (150mm)
Max. CUP (Type 6 or 11)
With Stationary Guard
ALWAYS USE
WHEEL RETAINER
AND RETAINER BOLT
Wheel Retainer Kit
for Type 6 or 11 Cup Wheels
Part No. 201787
WHEEL GUARDS,
WRENCHES AND ADAPTORS
GUARD CUP WHEEL CAPACITY
5" 861892 5" Dia. x 2" Height (125mm x 50mm) - Type 6 or 11
6" 861893 6" Dia. x 2" Height (150mm x 50mm) - Type 6 or 11
GUARD DEPRESSED CENTER
WHEEL CAPACITY
Size Type 27 Type 28
7" 867740 867740 7" Dia. x 1/4" Thick Max. (175mm x 6.4mm)
9" 867741 869067 9" Dia. x 1/4" Thick Max. (225mm x 6.4mm)
202405
844287
(Lockwasher)
842341
(Hex Nut)
WARNING
LABEL
202405
844287
(Lockwasher)
842341
(Hex Nut)
WIRE BRUSH
WARNING
LABEL
202408
GUARD
Size Type 27
7" 867740
9" 867741
844287
(Lockwasher)
842341
(Hex Nut)
5", 7", OR 9" SPIRAL COOL SANDING PAD
SANDING SHROUD
203988-1
GUARD
Size Type 6 or 11
5" 861892
6" 861893
843851
(Spacer - 2 Required)
849259
(Adapter Nut)
849834
(Wrench)
SANDING PAD
Size Part No.
5" (125mm) 849848
7" (175mm) 849913
9" (225mm) 849914
3/8"
WARNING
LABEL
202408
844287
(Lockwasher)
842341
(Hex Nut)
849269
(Adapter Kit)
843851
(Spacer - 2 Required)
204635
(Wheel Retainer)
204663
(Retainer Bolt)
7" or 9" DEPRESSED CENTER
(Type 27 or 28)
WHEEL GUARD and ADAPTOR KIT
NOTE: For wheels with throw away adaptors,
No. 843851 spacers, should be used to
properly space the wheel within the guard.
WARNING
LABEL
202408
GUARD
Size Type 27
7" 867740
9" 867741
844287
(Lockwasher)
842341-0
(Hex Nut)
843586
Adaptor
843587
(Adaptor Nut) 849834
(Wrench)
STACKED ABRASIVE DISCS
GOVERNOR
ADJUSTING WRENCH
Part No. 204729
DRIVING
FLANGE WRENCH
Part No. 889381

7
.OO15" (.038mm)
Clearance
INNER RACE
OF BEARING
SELECT OR SAND
ROTOR COLLAR TO
THIS MEASUREMENT
PLUS .0015" (.038mm)
INNER RACE
OF BEARING
FRONT
BEARING
PLATE
ROTOR
COLLAR
FRONT
BEARING
PLATE
Replace if 7/16"
(11mm) or less
at either end.
OPERATING INSTRUCTIONS
READ SAFETY RECOMMENDATIONS BEFORE
CONNECTING TOOL.
The 1700 and 1900 Series Grinders are designed to operate on
90 psig (6.2 bar) maximum air pressure, using a 3/4" hose up to
8' in length. 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 in-
creases 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 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.
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 be
run for several seconds to distribute the oil before disconnect-
ing from the air supply.
SERVICE INSTRUCTIONS
DISASSEMBLY-GENERAL
Disconnect the tool from the air supply and remove the grinding
wheel and guard from the front of the tool.
REMOVING THE MOTOR UNIT FROM THE MOTOR
HOUSING:
Insert a 5/16" hex wrench (clamped in a vise) in the spindle
shaft and unscrew the driving flange. Removing the housing
bolts will allow the governor housing 867832, to be removed
from the housing. Remove the motor unit from the rear of the
motor housing.
DISASSEMBLY OF THE MOTOR UNIT:
Unscrew the governor assembly (left hand threads) from the
rear of the motor unit. Clamping on the cylinder, hold the motor
unit in the vise with the rear bearing plate up. Using a soft 1/4"
(6.5mm) rod and a suitable hammer, drive the rotor shaft out of
the overspeed shut-off disc and rear rotor bearing, 869820. This
will allow the various motor unit components to be removed from
the rotor. IMPORTANT NOTE: The overspeed shut-off disc is an
assembly and must not be disassembled. Do not remove the
disc seal plate unless the rear bearing plate needs to be re-
placed.
DISASSEMBLY OF THE GOVERNOR:
Remove the governor pin retainer, No. 867770, and using a
3/32" (2mm) punch, drive out the governor weight pins, No.
413050. After removing the weights and two washers, the gov-
ernor cone pin, No. 413047, may be driven out using the 3/32"
(2mm) punch. It is important that a new governor cone pin is
used during reassembly of the governor (SEE GOVERNOR RE-
ASSEMBLY). Unscrewing the governor adjusting nut, No.
204730, will allow the removal of the governor spring.
THROTTLE HANDLE MAINTENANCE:
Should the throttle valve seal, No. 869539, need replacing, un-
screw the throttle valve cap, No. 867753, for removal of the throttle
valve and components.
The tool is equipped with two (2) air screens for protection of
the internal motor parts from foreign material. The air screen
located in the inlet bushing may be removed for cleaning and
inspection by unscrewing the inlet bushing, No. 867758. If the
screen is torn or damaged, the inlet bushing should be replaced.
The air screen, No. 867729, located between the throttle handle
and motor housing may be removed for cleaning and inspection
by unscrewing the two (2) socket head cap screws, No. 813041.
If the screen cannot be cleaned or if it is torn, it should be re-
placed.
REASSEMBLY—GENERAL
The tool is reassembled in the reverse order of disassembly. All
parts should be thoroughly cleaned and inspected before reas-
sembly. Particular attention should be paid to the rotor blades
and rotor bearings as failure of these parts could cause dam-
age to more expensive components. Rotor blades should be
replaced at every repair cycle or if they measure 7/16" (11 mm)
or less at either end (See Fig. 1). Rotor bearings should be re-
placed if they are rough or show excessive looseness.
Fig. 1
MOTOR UNIT REASSEMBLY:
During reassembly of the motor unit, the rotor must be posi-
tioned by the front rotor collar, No. 869608, so that when as-
sembled, the rotor will have .0015" (.038mm) to .0025" (.063mm)
clearance between it and the front bearing plate. Install the front
rotor bearing, No. 869818, in the front bearing plate, No. 869814,
and measure the depth of the bearings inner race from the face
of the bearing plate. Select, or fit by sanding, a rotor collar .0015"
(.025mm) to .0025" (.062mm) larger than this dimension (See
Fig. 2).
Fig. 2

8
OVERSPEED
SHUT-OFF
DISC
DRIVER
BEARING
Fig. 3
ROTOR
SHAFT
Slip the rotor collar, chamfered side first, on the rotor spindle
and drive the bearing plate and bearing (drive on the bearing's
inner race) down on the rotor. Place the assembly on a 5/16"
hex wrench clamped in a vise. Install the rotor blades, cylinder,
rear rotor collar, rear bearing plate, wavy washer, and rear rotor
bearing (drive on the bearing's inner race).
If disassembled earlier, install the "O"-ring, No. 867745, onto
the disc seal plate, No. 867765, and press the seal plate, No.
867765, (undercut side up) onto the rear bearing plate.
Before reassembly, the overspeed shut-off disc should receive
a close inspection for wear and/or damage. Also check the rpm
rating etched on the disc against the rpm rating stamped on the
tool; they must be the same.
The complete overspeed shut-off disc assembly must be as-
sembled to the rotor shaft using a suitable flat driver 7/8"
(22.5mm) O.D. min. resting against the assembly. Drive the disc
assembly down until it stops against the rear bearing inner race
(See Fig. 3).
GOVERNOR REASSEMBLY
It is imperative that all parts be clean and free of foreign mate-
rial. A new governor cone pin, No. 413047 should be installed
and both ends of the pin must be upset to secure it. The gover-
nor cone, No. 413048 should be checked to be sure that it moves
freely on the governor spider, No. 869099 after installation of
the cone pin.
Check the fit between the governor weights and governor weight
pins, No. 413050, and replace all parts that show excessive wear.
Install the governor spring on the governor spider being sure
the tang on the spring engages the hole in the spider. Screw the
governor adjusting nut, No. 204730 on the governor screw ap-
proximately six (6) turns. Final speed adjustment is made after
the tool is completely assembled using the governor adjustment
wrench, No. 204729.
IMPORTANT: After the governor is completely assembled, in-
stall it (left hand threads) on the rear of the rotor shaft and torque
to 40 - 45 ft. Ibs. (54 - 60 Nm). In cases where a torque wrench
is not available, the governor should be hand tightened to a
snug position, then tightened by going beyond the hand tight
condition 180°.
MOTOR INSTALLATION
The spring washer, No. 869817 should be placed in the housing
with the large diameter against the motor housing (cone side
up). Slip the motor into the housing making sure the rear cylin-
der pin and motor air inlet are positioned as shown in (Fig 4).
This positions the exhausts slots for minimum sound level. The
"O" ring, No. 834619 should be inserted into the governor hous-
ing, and the governor housing placed on the motor housing.
Insert the four casing bolts and tighten the nuts snugly, but not
to full torque. Install the driving flange, No. 204636; torque to 50
- 60 ft-lbs. (68 - 80 Nm). Attach the air hose, and run the tool.
The spindle must turn freely. Tighten the housing bolts to 60 -
70 in-lbs (6.8 - 7.9 Nm) and run the tool again, checking to see
that the spindle turns freely.
FINAL SPEED ADJUSTMENT
Check the free speed of the tool with a dependable tachometer
with the grinding wheel removed.
To make an adjustment, turn the air supply off and remove (us-
ing a 9/64" hex wrench) the spindle plug, No. 622060, and in-
sert the governor adjustment wrench, No. 204729 to engage
the governor adjustment nut, No. 204730. Looking from the front
of the spindle, a clockwise adjustment will increase the rpm and
a counterclockwise adjustment will decrease the rpm. Replace
the spindle plug before turning the air supply on. Check the rated
rpm of the tool stamped on the governor housing and set the
free speed to a speed less than the rated rpm at 90 psig.
ALWAYS USE A GUARD!
Install the proper wheel guard (see page 6). Tighten the wheel
guard retainer nuts to the proper torque as shown on page 3.
Read the Safety Recommendations before mounting a wheel
and operating this tool.
Cylinder Pin
Motor Air Inlet
Rear View of Motor in Housing
Fig. 4
Housing
Exhaust

9
PARTS LIST - MUFFLER ASSEMBLY
PART NO. NAME OF PART QTY.
202112 Muffler Screw (self tapping) 2
202113 Muffler (incl. 867947) 1
202114 Muffler (incl. 867948) 1
867943 Baffle Plate 1
867945 Baffle Plate 1
867947 Muffler Gasket 1
867948 Muffler Gasket 1
The complete muffler subassembly can be purchased as a subas-
sembly:
1700-V Part No. 861996
1900-V Part No. 861997
INSTALLATION PROCEDURE:
The muffler is installed on the tool by aligning the muffler assembly over
the exhaust and screwing the two (2) self-tapping screws into the mat-
ing exhaust holes.
PARTS LIST—PIPED AWAY EXHAUST SYSTEM
PART NO. NAME OF PART QTY.
867946 Exhaust Cover Screw 2
867947 Cover Gasket (1700-V) 1
867948 Cover Gasket (1900-V) 1
869246 Socket Head Cap Screw 2
869247 Gasket 1
869248 Exhaust Cover (1700-V) incl. 867947 1
869249 Exhaust Cover (1900-V) incl. 867948 1
869829 Housing Adapter 1
869830 Muffler Adapter 1
869831 Muffler 1
869832 Exhaust Hose (10') 1
869833 Hose Clamp 2
The complete piped away exhaust system can be purchased as a
subassembly.
1700-V Part No. 861917
1900-V Part No. 861918
INSTALLATION PROCEDURES:
Align the exhaust cover over the exhaust holes and screw the two (2)
self-tapping screws into the mating exhaust holes. Remove the dead
handle and dead handle gasket from the tool. Drill 5/8" hole in motor
housing to align with housing adapter. Install the piped away exhaust
gasket, housing adapter, original gasket, and dead handle. Connect the
hose to the housing adapter and the muffler adapterand tighten the hose
clamps securely.
OPTIONAL EQUIPMENT
MUFFLER
PIPED AWAY EXHAUST
867946
869833
869833
869247 869829 869246
869830
869831
869832
1700-V 867947
1900-V 867948
1700-V 869248
1900-V 869249
202112
1700-V 202113
1900-V 202114
1700-V 867947
1900-V 867948
1700-V 867945
1900-V 867943

10
OFF
GOVERNOR SPRING
RPM PART NO. COLOR
4,500 413041 GREEN
6,000 413042 NONE
7,200 413041 GREEN
7,700 413041 GREEN
867770
204730
413050
869099
413048
413047
GOVERNOR WEIGHT
RPM PART NO. DIMENSION-X
4,500 413270 3/4" (19mm)
6,000 413270 3/4" (19mm)
7,200 413210 1/2" (12.7mm)
7,700 413210 1/2" (12.7mm)
204187
204187
204187
204187
x
867765
865520
OVERSPEED SHUT-OFF DISC
RPM PART NO.
4,500 869834
6,000 869835
7,200 869836
7,700 869837
Quantity
4
5
0
0
4
1
1
-
1
1
2
-
2
1
1
6
0
0
0
4
1
-
1
1
1
2
-
2
1
1
7
2
0
0
4
1
1
-
1
1
2
2
-
1
1
7
7
0
0
4
1
1
-
1
1
2
2
-
1
1
Washer
Governor Adjusting Nut
Governor Spring (Green)
Governor Spring (No Color)
Governor Cone Pin
Governor Cone
Governor Weight Pin
Governor Weight
Governor Weight
Governor Pin Retainer
Governor Spider
204187
204730
413041
413042
413047
413048
413050
413210
413270
867770
869099
Name of Part
RPM
Part No.
PART NO.
201788
201789
201790
201790
RPM
4,500
6,000
7,200
7,700
COMPLETE GOVERNOR
ASSEMBLY NO.
IMPORTANT NOTE: The RPM rating and part number are etched
on the surface of the disc.
NAME OF PART
"O"-Ring 2-1/4" x 2-3/8"
Disc Seal Plate
4,500 RPM Overspeed Shut-off Disc
6,000 RPM Overspeed Shut-off Disc
7,200 RPM Overspeed Shut-off Disc
7,700 RPM Overspeed Shut-off Disc
PART NO.
865520
867765
869834
869835
869836
869837
QTY.
1
1
1
1
1
1
PART LIST OVERSPEED SHUT-OFF DISC
AND RELATED COMPONENTS
VERTICAL GRINDERS GOVERNOR & SHUT-OFF DISC

11
OFF
Governor
Assembly
(See Page 10)
C-Model Only
Wheel Retainer Kit 201787
(Instruction Tag 204732 included)
Overspeed Shut-off Disc
and Related Components
(See Page10)
869820
863925
867749
869608*
869819
847548
869814
869818
869817
622060
203011
834228
867747
867764
813041 813041
204636
204635
204663
867832
202020
203208
834619
832899
842341
844287
842341
1700 867776
1900 867825
1700 204645
1900 204646
1700 867504
1900 867503
1700 867746
1900 867822
1700 204644
1900 204643
* Available
Rotor Collars
Part No. Thickness
869608 .1525" - .1520"
869609 .1515" - .1510"
869610 .1505" - .1500"
869892 .1495" - .1490"
869893 .1485" - .1480"
VERTICAL GRINDERS MOTOR UNIT
Part No.
201787
202020
203011
203208
204635
204636
204643
204644
204645
204646
204663
204732
622060
813041
832899
834228
834619
842341
844287
847548
863925
867503
867504
867746
867747
867749
867764
867776
867822
867825
867832
869608
869814
869817
869818
869819
869820
Name of Part
Wheel Retainer Kit
(incl. 204635, 204732 & 204663)
Drive Screw
Instruction Plate
Instruction Plate
Adaptor
Driving Flange
Rotor Blade (1900)
Rotor Blade (1700)
Rotor (1700)
Rotor (1900)
Adaptor Screw
Instruction Tag
Spindle Plug
Dead Handle Bolt
Flat Washer
Drive Screw
"O"-Ring 13/16" x 15/16"
Hex Nut
Lock Washer
Cylinder Pin
Wavy Washer
Motor Housing (1900)
Motor Housing (1700)
Housing Bolt (1700)
Dead Handle Gasket
Rotor Collar (Rear)
Dead Handle
Cylinder (1700) - (incl. 847548)
Housing Bolt (1900)
Cylinder (1900) -(incl. 847548)
Governor Housing -
(incl. 202020, 203208)
Rotor Collar (Front)
Front Bearing Plate
Spring Washer
Front Rotor Bearing
Rear Bearing Plate
Rear Rotor Bearing
Qty.
1
4
1
1
1
1
4
4
1
1
1
1
1
2
4
2
1
8
4
1
1
1
1
4
1
1
1
1
4
1
1
1
1
1
1
1
1

12
VERTICAL GRINDERS HANDLE SUBASSEMBLIES
845228
845322
867731
864620
867756
867758
867732
844323
867729
869839
844912
869429869539
861009
413056
833961867753
813041
867769
867756
867758
867732
844323
867729
869838
844912
867755869539
861009
413056
833961867753
813041
413255
883729
Self Closing Thumb Throttle 415330
Quick Release Thumb Throttle 867768
NAME OF PART
Throttle Valve Spring
Lever Bushing
Self Closing Thumb Throttle
Socket Head Cap Screw
"O"-Ring 13/16" x 1"
"O"-Ring 1-1/4" x 1-1/2"
Lock Washer
Throttle Lever Pin
Pawl Pin
Throttle Valve (incl. 869539)
Pawl Spring
Air Screen
Pawl
"O"-Ring 1-1/8" x 1-5/16"
Throttle Valve Cap
Throttle Pin
Throttle Pin Bushing
Inlet Bushing
Quick Release Thumb Throttle
Lock Off Lever
Throttle Pin
Throttle Valve Seal
Throttle Handle (incl. 867756)
Throttle Handle (incl. 867756)
Throttle Lever Screw
QTY.
S.
C.
T
H
U
M
B
Q.
R.
T
H
U
M
B
L.
O.
L
E
V
E
R
1
1
1
2
1
1
2
-
-
1
-
1
-
1
1
1
1
1
-
-
-
1
1
-
1
1
1
-
2
1
1
2
-
-
1
-
1
-
1
1
1
1
1
1
-
-
1
1
-
1
1
-
-
2
1
1
2
1
1
1
1
1
1
1
1
1
1
1
-
1
1
1
-
1
-
PART
NO.
413056
413255
415330
813041*
833961
844323*
844912*
845228
845322
861009
864620
867729*
867731
867732
867753
867755
867756
867758
867768
867769
869429
869539
869838
869839
883729
*Denotes parts not included in subassemblies listed Be-
low.
The complete throttle handles can be purchased as a
subassembly using the code numbers listed below.
Self Closing Thumb Throttle —861898
Quick Release Thumb Throttle —861897
Lock Off Lever Throttle —861896
Type
Handle
SELF CLOSING THUMB LEVER &
QUICK RELEASE THUMB LEVER
HANDLE
LOCK OFF LEVER HANDLE

13
NOTES

14
NOTES

15
NOTES

16
CooperTools
670 Industrial Drive
Lexington, SC 29072
Phone: [phone]
Fax: [phone]
www.clecotools.com