Harbor Freight Tools Grinder 97870 User Manual

AIR MICRO DIE GRINDER  
Model 97870  
SET UP AND OPERATING INSTRUCTIONS  
Diagrams within this manual may not be drawn proportionally.  
Due to continuing improvements, actual product may differ slightly from the product described herein.  
®
Distributed exclusively by Harbor Freight Tools .  
3491 Mission Oaks Blvd., Camarillo, CA 93011  
Read this material before using this product.  
Failure to do so can result in serious injury.  
SAVE THIS MANUAL.  
©
®
Copyright 2008 by Harbor Freight Tools . All rights reserved. No portion of this  
manual or any artwork contained herein may be reproduced in any shape or form  
without the express written consent of Harbor Freight Tools.  
For technical questions or replacement parts, please call 1-800-444-3353.  
Manual Revised 11h  
 
NOTICE is used to  
address practices  
not related to personal injury.  
SAVE THIS MANUAL  
Keep this manual for the safety warn-  
ings and precautions, assembly, operat-  
ing, inspection, maintenance and cleaning  
procedures. Write the product’s serial  
number in the back of the manual near the  
assembly diagram (or month and year of  
purchase if product has no number). Keep  
this manual and the receipt in a safe and  
dry place for future reference.  
CAUTION, without  
the safety alert  
symbol, is used to address  
practices not related to  
personal injury.  
IMPORTANT SAFETY  
INSTRUCTIONS  
Safety Alert Symbol and Signal  
Words  
INSTRUCTIONS PERTAINING  
TO A RISK OF FIRE,  
In this manual, on the labeling,  
and all other information  
ELECTRIC SHOCK, OR  
INJURY TO PERSONS  
provided with this product:  
This is the safety alert  
symbol. It is used to alert  
you to potential personal  
injury hazards. Obey all  
safety messages that  
WARNING – When using tools, basic pre-  
cautions should always be followed,  
including the following:  
follow this symbol to avoid  
possible injury or death.  
General  
a. To reduce the risks of electric  
shock, fire, and injury to persons,  
read all the instructions before us-  
ing the tool.  
DANGER indicates  
a hazardous  
situation which, if not  
avoided, will result in death or  
serious injury.  
Work area  
a. Keep the work area clean and well  
lighted. Cluttered benches and dark  
areas increase the risks of electric  
shock, fire, and injury to persons.  
WARNING  
indicates a  
hazardous situation which, if  
not avoided, could result in  
death or serious injury.  
b. Do not operate the tool in explo-  
sive atmospheres, such as in the  
presence of flammable liquids,  
gases, or dust. The tool is able to  
create sparks resulting in the ignition  
of the dust or fumes.  
CAUTION, used  
with the safety  
alert symbol, indicates a  
hazardous situation which, if  
not avoided, could result in  
minor or moderate injury.  
c. Keep bystanders, children, and  
visitors away while operating the  
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Page 3  
 
tool. Distractions are able to result in  
the loss of control of the tool.  
conditions. Wear heavy-duty work  
gloves during use.  
g.  
h.  
Always wear eye protec-  
tion. Wear ANSI-ap-  
proved safety goggles.  
Personal safety  
a. Stay alert. Watch what you are do-  
ing and use common sense when  
operating the tool. Do not use the  
tool while tired or under the influ-  
ence of drugs, alcohol, or medica-  
tion. A moment of inattention while  
operating the tool increases the risk  
of injury to persons.  
Always wear hearing  
protection when using  
the tool. Prolonged expo-  
sure to high intensity noise  
is able to cause hearing loss.  
i.  
Keep this product and all other tools  
away from children and animals. Do  
not allow spectators in or around the  
work area.  
b. Dress properly. Do not wear loose  
clothing or jewelry. Contain long  
hair. Keep hair, clothing, and  
gloves away from moving parts.  
Loose clothes, jewelry, or long hair  
increases the risk of injury to persons  
as a result of being caught in moving  
parts.  
j.  
Never submerge this tool in liquids or  
use while in an excessively moist, or  
volatile environment.  
k. Ensure the bit, Collet Nut and work  
piece are tightly secured before each  
use.  
c. Avoid unintentional starting. Be  
sure the switch is off before con-  
necting to the air supply. Do not  
carry the tool with your finger on the  
valve or connect the tool to the air  
supply with the valve on.  
l.  
Use only included and/or recom-  
mended parts & accessories with this  
tool. Never use a carbide tipped or  
steel circular saw blade with this Die  
Grinder. Do not use a wood carving  
blade, carving disc with chain saw  
cutters, or a cutting carving disc with  
this Die Grinder.  
d. Remove adjusting keys and  
wrenches before turning the tool  
on. A wrench or a key that is left at-  
tached to a rotating part of the tool  
increases the risk of personal injury.  
m. Never exceed the maximum rated  
air pressure for this tool. Also never  
attempt to use a propellant other than  
what has been recommended/speci-  
fied.  
e. Do not overreach. Keep proper  
footing and balance at all times.  
Proper footing and balance enables  
better control of the tool in unexpect-  
ed situations.  
n. Use for intended purposes only.  
Never force or modify a tool to per-  
form a task for which it was not con-  
structed.  
f.  
Use safety equipment. A  
dust mask, non-skid safety  
shoes and a hard hat must  
be used for the applicable  
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Page 4  
 
affects the tool’s operation. If dam-  
aged, have the tool serviced before  
using. Many accidents are caused  
by poorly maintained tools. There is a  
risk of bursting if the tool is damaged.  
Tool use and care  
a. Use clamps or another practical  
way to secure and support the  
workpiece to a stable platform.  
Holding the work by hand or against  
the body is unstable and is able to  
lead to loss of control.  
h. Use only accessories that are  
identified by the manufacturer for  
the specific tool model. Use of an  
accessory not intended for use with  
the specific tool model, increases the  
risk of injury to persons. Wheels and  
other accessories running over rated  
speed can fly apart and result in a  
risk of injury to persons.  
b. Do not force the tool. Use the  
correct tool for the application. The  
correct tool will do the job better and  
safer at the rate for which the tool is  
designed.  
c. Do not use the tool if the valve  
does not turn the tool on or off.  
Any tool that cannot be controlled  
with the switch is dangerous and  
must be repaired.  
Service  
a. Tool service must be performed  
only by qualified repair personnel.  
d. Disconnect the tool from the air  
source before making any adjust-  
ments, changing accessories, or  
storing the tool. Such preventive  
safety measures reduce the risk of  
starting the tool unintentionally. Turn  
off and detach the air supply, safely  
discharge any residual air pressure,  
and release the throttle and/or turn  
the switch to its off position before  
leaving the work area.  
b. When servicing a tool, use only  
identical replacement parts. Use  
only authorized parts.  
c. Use only the lubricants supplied  
with the tool or specified by the  
manufacturer.  
Air source  
a.  
Never connect to an air  
source that is capable of  
exceeding 90 psi. Over  
pressurizing the tool may  
e. Store the tool, when it is idle, out  
of reach of children and other un-  
trained persons. A tool is dangerous  
in the hands of untrained users.  
cause bursting, abnormal operation,  
breakage of the tool or serious injury  
to persons. Use only clean, dry,  
regulated compressed air at the rated  
pressure or within the rated pressure  
range as marked on the tool. Always  
verify prior to using the tool that the  
air source has been adjusted to the  
rated air pressure or within the rated  
air-pressure range.  
f.  
Maintain the tool with care. Keep a  
cutting tool sharp and clean. A prop-  
erly maintained tool, with sharp cut-  
ting edges reduces the risk of binding  
and is easier to control.  
g. Check for misalignment or bind-  
ing of moving parts, breakage of  
parts, and any other condition that  
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Page 5  
 
b. Never use oxygen, carbon dioxide,  
combustible gases or any bottled  
gas as an air source for the tool.  
Such gases are capable of explosion  
and serious injury to persons.  
Symbol Definitions  
Symbol  
Property or statement  
WARNING marking concerning Risk  
of Explosion.  
SAVE THESE  
INSTRUCTIONS.  
Specific Safety Instructions  
1. The warnings and precautions dis-  
cussed in this manual cannot cover  
all possible conditions and situations  
that may occur. It must be under-  
stood by the operator that common  
sense and caution are factors which  
cannot be built into this product, but  
must be supplied by the operator.  
SYMBOLS AND  
SPECIFIC SAFETY  
INSTRUCTIONS  
Symbol Definitions  
WARNING – Some dust created by  
power sanding, sawing, grinding, drill-  
ing, and other construction activities,  
contains chemicals known [to the  
State of California] to cause cancer,  
birth defects or other reproductive  
harm. Some examples of these  
chemicals are:  
• Lead from lead-based paints  
• Crystalline silica from bricks and  
cement or other masonry products  
• Arsenic and chromium from chemi-  
cally treated lumber  
Your risk from these exposures var-  
ies, depending on how often you do  
this type of work. To reduce your  
exposure to these chemicals: work in  
a well ventilated area, and work with  
approved safety equipment, such as  
those dust masks that are specially  
designed to filter out microscopic  
particles. (California Health & Safety  
Code § 25249.5, et seq.)  
Symbol  
Property or statement  
No-load speed  
n
o
Revolutions or reciprocation per  
minute  
.../min  
PSI  
Pounds per square inch of pressure  
Foot-pounds of torque  
ft-lb  
Blows per minute  
BPM  
CFM  
SCFM  
NPT  
Cubic Feet per Minute flow  
Cubic Feet per Minute flow at  
standard conditions  
National pipe thread, tapered  
National pipe thread, straight  
NPS  
WARNING marking concerning Risk  
of Eye Injury. Wear ANSI-approved  
eye protection.  
WARNING marking concerning Risk  
of Hearing Loss. Wear hearing  
protection.  
WARNING – The brass components  
of this product contain lead, a chemi-  
cal known to the State of California  
to cause birth defects (or other repro-  
WARNING marking concerning Risk  
of Respiratory Injury. Wear NIOSH-  
approved dust mask/respirator.  
Chart continued in next column.  
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Page 6  
 
ductive harm). (California Health &  
Safety code § 25249.5, et seq.)  
this tool. If you feel any medical or  
physical symptoms related to vibra-  
tion (such as tingling, numbness, and  
white or blue fingers), seek medical  
advice as soon as possible.  
2. Only use with accessories rated to  
handle the forces exerted by this  
tool during operation. Accessories  
not designed for the forces gener-  
ated may break and forcefully launch  
pieces.  
2. Do not smoke during use. Nico-  
tine reduces the blood supply to the  
hands and fingers, increasing the risk  
of vibration-related injury.  
3. Attach all accessories properly to the  
tool before connecting the air sup-  
ply. A loose accessory may detach or  
break during operation.  
3. Wear suitable gloves to reduce the  
vibration effects on the user.  
4. Use tools with the lowest vibration  
when there is a choice between dif-  
ferent processes.  
4. Obey the manual for the air compres-  
sor used to power this tool.  
5. Install an in-line shutoff valve to allow 5. Include vibration-free periods each  
immediate control over the air supply  
in an emergency, even if a hose is  
ruptured.  
day of work.  
6. Grip tool as lightly as possible (while  
still keeping safe control of it). Let  
the tool do the work.  
6. Do not lay the tool down until it has  
come to a complete stop. Moving  
parts can grab the surface and pull  
the tool out of your control.  
7. To reduce vibration, maintain tool as  
explained in this manual. If abnormal  
vibration occurs, stop immediately.  
Vibration Precautions  
SAVE THESE  
INSTRUCTIONS.  
This tool vibrates during use. Re-  
peated or long-term exposure to vibra-  
tion may cause temporary or permanent  
physical injury, particularly to the hands,  
arms and shoulders. To reduce the risk of  
vibration-related injury:  
1. Anyone using vibrating tools regu-  
larly or for an extended period should  
first be examined by a doctor and  
then have regular medical check-  
ups to ensure medical problems are  
not being caused or worsened from  
use. Pregnant women or people  
who have impaired blood circulation  
to the hand, past hand injuries, ner-  
vous system disorders, diabetes, or  
Raynaud’s Disease should not use  
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Page 7  
 
Air Supply  
FUNCTIONAL DESCRIPTION  
TO PREVENT  
Specifications  
EXPLOSION:  
Use only clean, dry, regulated,  
compressed air to power this  
tool. Do not use oxygen,  
carbon dioxide, combustible  
gases, or any other bottled  
gas as a power source for this  
tool.  
Exhaust Position  
On/Off Method  
Frontal Exhaust  
Built-in Rotary Valve  
1/4" -18 NPT (male inlet  
coupler)  
Air Inlet  
Maximum Speed*  
Air Consumption  
Collet Size  
25,000 RPM  
2 CFM @ 90 PSI  
1/8"  
* Maximum speed at stated maximum air pressure. Ex-  
cess air pressure is hazardous and may cause the tool  
to exceed stated maximum speed.  
Male  
Connector  
Male  
Connector  
Tool  
Quick  
Coupler  
INITIAL TOOL SET UP/  
ASSEMBLY  
Air Hose  
on Reel  
Read the ENTIRE IMPORTANT  
SAFETY INFORMATION  
Valve  
Filter  
Oiler  
section at the beginning of this  
manual including all text under  
subheadings therein before set  
up or use of this product.  
Air  
Compressor  
Quick  
Coupler  
Regulator with  
Pressure Gauge  
Note: For additional information regarding  
the parts listed in the following pages,  
refer to the Assembly Diagram near  
the end of this manual.  
Recommended Air Line Components  
1. Incorporate an in-line oiler, shut-off  
valve, regulator with pressure gauge,  
and filter for best service, as shown in  
the diagram above. An in-line shut-  
off valve is an important safety  
device because it controls the air  
supply even if the air hose is rup-  
tured.  
Unpacking  
When unpacking, check to make sure  
that the item is intact and undamaged. If  
any parts are missing or broken, please  
call Harbor Freight Tools at the number  
shown throughout the manual as soon as  
possible.  
Note: If an automatic oiler system is not  
used, add a few drops of Pneumatic  
Tool Oil to the airline connection be-  
fore operation. Add a few more drops  
after each hour of continual use.  
This air tool may be shipped with a  
protective plug covering the air inlet.  
Remove this plug before set up.  
2. Attach an air hose to the compres-  
sor’s air outlet. Connect the air hose  
to the air inlet of the tool. Other com-  
REV 08j  
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Page 8  
 
ponents, such as a connector and  
quick coupler, will make operation  
more efficient, but are not required.  
9. If the tool will not be used at this  
time, turn off and detach the air sup-  
ply, safely discharge any residual air  
pressure, and release the throttle  
and/or turn the switch to its off posi-  
tion to prevent accidental operation.  
WARNING! TO PREVENT SERIOUS  
INJURY FROM ACCIDENTAL  
OPERATION:  
Do not install a female quick  
coupler on the tool. Such a coupler  
contains an air valve that will allow  
the air tool to retain pressure and  
operate accidentally after the air  
supply is disconnected.  
Note: Residual air pressure should not be  
present after the tool is disconnected  
from the air supply. However, it is a  
good safety measure to attempt to  
discharge the tool in a safe fashion  
after disconnecting to ensure that the  
tool is disconnected and un-powered.  
Note: Air flow, and therefore tool perfor-  
mance, can be hindered by under-  
sized air supply components.  
3. The air hose must be long enough  
to reach the work area with enough  
extra length to allow free movement  
while working.  
4. Make sure the tool’s throttle or switch  
is in the off position; refer to Opera-  
tion section for description of con-  
trols.  
5. Close the in-line safety valve be-  
tween the compressor and the tool.  
6. Turn on the air compressor according  
to the manufacturer’s directions and  
allow it to build up pressure until it  
cycles off.  
7. Adjust the air compressor’s output  
regulator so that the air output is  
enough to properly power the tool,  
but the output will not exceed the  
tool’s maximum air pressure at any  
time. Adjust the pressure gradually,  
while checking the air output gauge  
to set the right pressure range.  
8. Inspect the air connections for leaks.  
Repair any leaks found.  
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Page 9  
 
2. Tighten finger tight, then use the two  
Collet Nut Wrenches, one on the top  
of the Clamping Nut, and the other on  
the Collet Holder (18) and tighten the  
tip securely.  
OPERATING INSTRUCTIONS  
Read the ENTIRE IMPORTANT  
SAFETY INFORMATION  
section at the beginning of this  
manual including all text under  
subheadings therein before set  
up or use of this product.  
Work Piece and Work Area Set Up  
1. Designate a work area that is clean  
and well-lit. The work area must not  
allow access by children or pets to  
prevent injury and distraction.  
Inspect tool before use, looking  
for damaged, loose, and  
missing parts. If any problems  
are found, do not use tool until  
repaired.  
2. Route the air hose along a safe route  
to reach the work area without creat-  
ing a tripping hazard or exposing the  
air hose to possible damage. The air  
hose must be long enough to reach  
the work area with enough extra  
length to allow free movement while  
working.  
Tool Set Up  
TO PREVENT  
SERIOUS INJURY  
FROM ACCIDENTAL  
OPERATION:  
Turn off the tool, detach the  
air supply, safely discharge  
any residual air pressure in  
the tool, and release the  
throttle and/or turn the switch  
to its off position before  
performing any inspection,  
maintenance, or cleaning  
procedures.  
3. Secure loose workpieces using a vise  
or clamps (not included) to prevent  
movement while working.  
4. There must not be hazardous ob-  
jects (such as utility lines or foreign  
objects) nearby that will present a  
hazard while working.  
General Operating Instructions  
TO PREVENT SERIOUS  
INJURY:  
1. If an automatic oiler is not used, add  
a few drops of Pneumatic Tool Oil to  
the air-line connection before use.  
Add a few more drops after each  
hour of continual use.  
Do not adjust or tamper with  
any control or component in a  
way not specifically explained  
within this manual. Improper  
adjustment can result in  
tool failure or other serious  
hazards.  
2. Have the desired bit installed in the  
end of the grinder and secured.  
1. To install a bit (with 1/8” shank),  
loosen the Clamping Nut (22), slide  
the bit’s shank through the Clamping  
Nut and through the 1/8” Collet (21).  
3. Wear ANSI-approved safety glasses.  
4. Ensure that the Control Ring (3) is  
in the “OFF” position. Plug the Male  
Coupler Plug to an air compressor.  
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Page 10  
 
5. Turn the Control Ring (3) slowly to  
the “ON” position to begin grinding or  
cutting. The more you turn the knob,  
the higher the RPM.  
6. If the tool requires more force to  
accomplish the task, verify that the  
tool receives sufficient, unobstructed  
airflow (CFM) and increase the pres-  
sure (PSI) output of the regulator up  
to the maximum air pressure rating of  
this tool.  
CAUTION! TO PREVENT TOOL  
AND ACCESSORY FAILURE, RE-  
SULTING IN INJURY:  
Do not exceed the tool’s maximum  
air pressure rating.  
If the tool still does not have sufficient  
force at maximum air pressure and  
sufficient airflow, then a larger tool  
may be required.  
7. To prevent accidents, turn off the  
tool, detach the air supply, safely  
discharge any residual air pressure  
in the tool. Clean external surfaces  
of the tool with clean, dry cloth, and  
apply a thin coat of tool oil. Then  
store the tool indoors out of children’s  
reach.  
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Page 11  
 
explained as part of the regular op-  
eration of the air-operated tool.  
USER-MAINTENANCE  
INSTRUCTIONS  
1. Daily - Air Supply Maintenance:  
Every day, perform maintenance on  
the air supply according to the com-  
ponent manufacturers’ instructions.  
Maintenance on the air supply will  
allow the tool to operate more safely  
and will also reduce wear on the tool.  
Any disassembly and cleaning should  
be done only by a qualified techni-  
cian.  
Procedures not specifically  
explained in this manual  
must be performed only by a  
qualified technician.  
TO PREVENT  
SERIOUS INJURY  
FROM ACCIDENTAL  
OPERATION:  
Turn off the tool, detach the  
air supply, safely discharge  
any residual air pressure in  
the tool before performing any  
inspection, maintenance, or  
cleaning procedures.  
2. Wipe and brush grinder off after each  
use. keep the unit dry and keep the  
space at either end of the knob free  
of oil, grease and wood or metal  
chips.  
TO PREVENT SERIOUS  
INJURY FROM TOOL  
FAILURE:  
3. Ensure that the Front Cover (20),  
Sleeve (19) and Rear End Holder  
are tightly secured so that air will not  
escape.  
Do not use damaged  
equipment. If abnormal  
noise, vibration, or air leaking  
occurs, have the problem  
corrected before further use.  
4. Ensure the hose couplings or con-  
nectors have air tight connections.  
TO PREVENT EXPLOSION:  
Lubricate the tool only  
with specified lubricants.  
Lubricate the air inlet  
using only pneumatic tool  
oil. Lubricate the internal  
mechanism using only  
white lithium grease. Other  
lubricants may damage the  
mechanism and may be  
highly flammable, causing an  
explosion.  
Cleaning and Maintenance  
Note: These procedures are in addition to  
the regular checks and maintenance  
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Page 12  
 
Troubleshooting  
Problem  
Possible Causes  
Likely Solutions  
Decreased output. 1. Not enough air pressure and/ 1. Check for loose connections and make sure  
or air flow.  
that air supply is providing enough air flow  
(CFM) at required pressure (PSI) to the  
tool’s air inlet. Do not exceed maximum air  
pressure.  
2. Obstructed valve.  
2. Clean around valve to ensure free  
movement.  
3. Incorrect lubrication  
inadequately lubricated.  
3. Lubricate using air tool oil and grease  
according to directions.  
4. Blocked air inlet screen (if  
equipped).  
4. Clean air inlet screen of buildup.  
5. Air leaking from loose housing. 5. Make sure housing is properly assembled  
and tight.  
6. Mechanism contaminated.  
6. Have qualified service technician clean and  
lubricate mechanism. Install in-line filter in air  
supply as stated in Initial Set Up: Air Supply.  
7. Rotor blade wear or damage. 7. Replace all rotor blades as a set.  
Housing heats  
during use.  
1. Incorrect lubrication or not  
enough lubrication.  
1. Lubricate using air tool oil and grease  
according to directions.  
2. Worn parts.  
2. Have qualified service technician inspect  
internal mechanism and replace parts as  
needed.  
Severe air  
leakage.  
(Slight air leakage  
is normal,  
especially on older  
tools.)  
1. Cross-threaded housing  
components.  
1. Check for incorrect alignment and uneven  
gaps. If cross-threaded, disassemble and  
replace damaged parts before assembly.  
2. Loose housing.  
2. Tighten housing assembly. If housing cannot  
be tightened properly, internal parts may be  
misaligned.  
3. Damaged valve or housing.  
3. Replace damaged components.  
4. Dirty, worn or damaged Control 4. Clean or replace Control Ring assembly.  
Ring (3).  
Follow all safety precautions whenever diagnosing or servicing the tool.  
Disconnect air supply before service.  
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Page 13  
 
ACCESSORY LIST  
Part  
Description  
Function  
Tighten/loosen  
Clamping Nut  
(22) and Collet  
Holder (18) for bit  
installation and  
removal.  
23  
Collet Nut Wrenches  
Plug into pressure  
source.  
24  
Male Coupler Plug  
*SKU or part number may not be available for some  
accessories.  
PLEASE READ THE FOLLOWING  
CAREFULLY  
THE MANUFACTURER AND/OR DISTRIBUTOR  
HAS PROVIDED THE PARTS LIST AND  
ASSEMBLY DIAGRAM IN THIS MANUAL AS  
A REFERENCE TOOL ONLY. NEITHER THE  
MANUFACTURER OR DISTRIBUTOR MAKES  
ANY REPRESENTATION OR WARRANTY OF  
ANY KIND TO THE BUYER THAT HE OR SHE  
IS QUALIFIED TO MAKE ANY REPAIRS TO THE  
PRODUCT, OR THAT HE OR SHE IS QUALIFIED  
TO REPLACE ANY PARTS OF THE PRODUCT.  
IN FACT, THE MANUFACTURER AND/OR  
DISTRIBUTOR EXPRESSLY STATES THAT  
ALL REPAIRS AND PARTS REPLACEMENTS  
SHOULD BE UNDERTAKEN BY CERTIFIED  
AND LICENSED TECHNICIANS, AND NOT BY  
THE BUYER. THE BUYER ASSUMES ALL RISK  
AND LIABILITY ARISING OUT OF HIS OR HER  
REPAIRS TO THE ORIGINAL PRODUCT OR  
REPLACEMENT PARTS THERETO, OR ARISING  
OUT OF HIS OR HER INSTALLATION OF  
REPLACEMENT PARTS THERETO.  
SKU 97870  
For technical questions, please call 1-800-444-3353.  
Page 14  
 
PARTS LIST  
PARTS LIST  
Part  
Description  
Q’ty  
Part  
Description  
Q’ty  
1
2
3
4
5
6
7
8
9
Rear End Holder  
Screw  
1
1
1
2
1
1
1
1
1
1
1
1
13 Rotor Blade  
Set  
1
14 Cylinder  
15 Spacer  
16 Lateral Disc  
17 Ball Bearing  
18 Collet Holder  
19 Sleeve  
20 Front Cover  
Control Ring  
O-ring  
1
1
1
1
1
1
1
1
O-ring  
Pin  
Hose Plug  
Intake Plate  
Ball Bearing  
21 Collet, 1/8"  
10 Pin  
11 Bearing Plate  
12 Rotor  
22 Clamping Nut  
23 Collet Nut Wrenches (not shown)  
24 Male Coupler Plug (not shown)  
2
1
ASSEMBLY DIAGRAM  
Record Product’s Serial Number Here:  
Note: If product has no serial number, record month and year of purchase instead.  
Note: Some parts are listed and shown for illustration purposes only, and are not avail-  
able individually as replacement parts.  
SKU 97870  
For technical questions, please call 1-800-444-3353.  
Page 15  
 
90 Day Warranty  
Harbor Freight Tools Co. makes every effort to assure that its products meet  
high quality and durability standards, and warrants to the original purchaser that  
this product is free from defects in materials and workmanship for the period  
of 90 days from the date of purchase. This warranty does not apply to damage  
due directly or indirectly, to misuse, abuse, negligence or accidents, repairs or  
alterations outside our facilities, criminal activity, improper installation, normal  
wear and tear, or to lack of maintenance. We shall in no event be liable for  
death, injuries to persons or property, or for incidental, contingent, special or  
consequential damages arising from the use of our product. Some states do  
not allow the exclusion or limitation of incidental or consequential damages, so  
the above limitation of exclusion may not apply to you. THIS WARRANTY IS  
EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED,  
INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.  
To take advantage of this warranty, the product or part must be returned to us  
with transportation charges prepaid. Proof of purchase date and an explanation  
of the complaint must accompany the merchandise. If our inspection verifies the  
defect, we will either repair or replace the product at our election or we may elect  
to refund the purchase price if we cannot readily and quickly provide you with a  
replacement. We will return repaired products at our expense, but if we determine  
there is no defect, or that the defect resulted from causes not within the scope of  
our warranty, then you must bear the cost of returning the product.  
This warranty gives you specific legal rights and you may also have other rights  
which vary from state to state.  
SKU 97870  
For technical questions, please call 1-800-444-3353.  
Page 16  
 

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