OEM Tools 24492 Service manual

UNPACKING
After unpacking unit, inspect carefully for any damage that
may have occurred during transit. Check for loose, missing,
or damaged parts. If any damage is observed, a shipping
damage claim must be filed with carrier. DO NOT use
the OEMTOOLS®Cordless Angle Grinder if broken, bent,
cracked or damaged parts (including labels) are noted. Any
Cordless Angle Grinder that appears damaged in any way,
operates abnormally or is missing parts should be removed
from service immediately. If you suspect that the Cordless
Angle Grinder was subjected to shock load (a load that
was dropped suddenly, unexpectedly, etc.) immediately
discontinue use until it has been checked by a factory
authorized service center.
*Voltage is measured without workload. Maximum initial
battery voltage after charging. Nominal voltage is 18 Volts.
Please read and save these instructions. Read through this owner’s manual carefully before using product. Protect yourself and
others by observing all safety information, warnings, and cautions. Failure to comply with instructions could result in personal
injury and/or damage to product or property. Please retain instructions for future reference.
The following safety information is provided as a guideline to help you operate your Cordless Angle Grinder under the safest
possible conditions. Any tool or piece of equipment can be potentially dangerous to use when safety or safe handling instructions
are not known or not followed. The following safety instructions are to provide the user with the information necessary for safe
use and operation. Please read and retain these instructions for the continued safe use of your service system. Failure to
follow instructions listed below may result in serious injury. In addition, make certain that anyone who uses the equipment
understands and follows these safety instructions as well.
Operating Instructions and Parts Manual 24492
FOR CUSTOMER SERVICE
Technical Question?
CALL 1-866-458-2472
[email protected]
20V MAX* LI-ION CORDLESS
ANGLE GRINDER
Thank you very much for choosing an OEMTOOLS®Product!
For future reference, please register your new tool at www.oem-tools.com and complete the owner’s record below:
Model: _______________ Purchase Date: ___________
Save the receipt, warranty and these instructions. It is important that you read the entire manual to become familiar with this
product before you begin using it. This product is designed for certain applications only. OEMTOOLS®cannot be responsible
for issues arising from modification. We strongly recommend this product is not modified and/or used for any application other
than that for which it was designed. If you have any questions relative to a particular application, DO NOT use the product until
you have first contacted customer service to determine if it can or should be performed on the product.
WARNING: This product can expose you to chemicals, including acrylonitrile, which are known to the State of California
to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
Explanation of Safety Signal Words
WARNING: Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION: Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
CAUTION: Used without the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result
in property damage.
NOTES: Provide clarity and helpful information.
WARNING
11/18
2018 OEMTOOLS™

2
Operating Instructions and Parts Manual 24492
20V MAX* LI-ION CORDLESS
ANGLE GRINDER
11/18
2018 OEMTOOLS™
POWER TOOL SAFETY
Read and understand all safety warnings and
instructions. Failure to follow the warnings and
instructions may result in electric shock, fire and/or
serious injury.
Save all warnings and instructions for future reference.
WORK AREA SAFETY
1. Keep work area clean and well lit. Cluttered or dark
areas invite accidents.
2. DO NOT operate power tools in explosive
atmospheres, such as in the presence of flammable
liquids, gases or dust. Power tools create sparks
which may ignite the dust or fumes.
3. Keep children and bystanders away while
operating a power tool. Distractions can cause
you to lose control.
ELECTRICAL SAFETY
1. Double insulated tools are equipped with a
polarized plug (one blade is wider than the other).
This plug will fit in a polarized plug only one way.
2. If the plug does not fit fully into the outlet,
reverse the plug. If it still does not fit, contact a
qualified electrician to install a polarized outlet.
DO NOT alter the plug in any way. Double
insulation eliminates the need for the three-prong
grounded power cord and grounded power
supply system.
3. Avoid body contact with grounded surfaces such
as pipes, radiators, ranges and refrigerators.
There is increased risk of electric shock if your
body is grounded.
4. DO NOT expose power tools to rain or wet
conditions. Water entering the power tool will
increase the risk of electric shock.
5. DO NOT abuse the cord. Never use the cord to
carry the tool or pull the plug from an outlet. Keep
cord away from heat, oil, sharp edges or moving
parts. Replace damaged cords immediately.
Damaged cords increase the risk of electric shock.
6. When operating a power tool outdoors, use an
outdoor extension cord marked “W-A” or “W”.
These cords are rated for outdoor use and
reduce the risk of electric shock.
PERSONAL SAFETY
1. Stay alert, watch what you are doing and use
common sense when operating a power tool.
DO NOT use a power tool while you are tired or
under the influence of drugs, alcohol or medication.
A moment of inattention while operating power
tools may result in serious personal injury.
2. Dress properly. DO NOT wear loose clothing or
jewelry.
3. Contain long hair. Keep hair, clothing, and gloves
away from moving parts. Loose clothing, jewelry, or
long hair can get caught in moving parts.
4. Avoid accidental start-ups. Verify that the switch
is in the OFF position before plugging in the tool.
Carrying a power tool with a finger on the switch
or plugging in a tool that has the switch in the ON
position invites accidents.
5. Remove adjusting keys and wrenches before
turning the tool ON. A wrench or key that is left
attached to a rotating part of the tool may result in
personal injury.
6. DO NOT overreach. Keep proper footing and
balance at all times. Proper footing and balance
allows the operator to maintain better control of
the tool in unexpected situations.
7. Use safety equipment. Always wear eye protection.
8. Use a dust mask, non-skid safety shoes, a hardhat,
or hearing protection when appropriate.
POWER TOOL SAFETY
1. Use clamps or another practical means to secure
and support the workpiece to a stable platform.
Holding the work in a hand or against the body is
not stable, and may lead to loss of control.
2. DO NOT force the tool. Use the correct tool for the
application. The correct tool will do the job better
and safer when used at the rate that it was designed
to work at.
3. DO NOT use a power tool if it cannot be turned ON
or OFF using the power switch. A tool that cannot
be controlled using the switch is dangerous, and
must be repaired.
4. Disconnect the plug from the outlet before making
any adjustments, changing accessories, or storing
the tool. Such preventive safety measures reduce
the risk of accidental start-ups.
5. When power tools are not in use, store them out of
the reach of children or untrained persons. Tools
are dangerous in the hands of untrained users.
6. Maintain tools with care. Keep cutting tools sharp
and clean. Properly maintained cutting tools with
sharp cutting edges are less likely to bind, and are
easier to control.
7. Inspect the tool for misalignment or binding
of moving parts, broken parts, and any other
condition that may affect the operation of the tool.
If it is damaged, have the tool serviced before
using it. Many accidents are caused by poorly
maintained tools.

3
Operating Instructions and Parts Manual 24492
20V MAX* LI-ION CORDLESS
ANGLE GRINDER
11/18
2018 OEMTOOLS™
8. Use only accessories that are recommended by the
manufacturer for this model. Accessories that are
suitable for one tool may become hazardous when
used with another tool.
SERVICE
Tool servicing must be performed by qualified
personnel. Service or maintenance performed by non-
qualified personnel could result in a risk of injury.
When servicing a tool, use only identical replacement
parts. Follow the instructions in the Maintenance
section of this Manual. The use of unauthorized parts
or failure to follow the instructions in the Maintenance
section of this Manual may create a risk of electric
shock or injury.
SPECIFIC SAFETY RULES
WARNING
1. Know your cordless angle grinder. DO NOT plug in
the charger or install a battery in the tool until you
have read and understood this Instruction Manual.
Learn the tool’s applications and limitations, as well
as the specific potential hazards related to this tool.
Following this rule will reduce the risk of electric
shock, fire, or serious injury.
2. Always wear eye protection. Any power tool
can throw foreign objects into your eyes and cause
permanent eye damage. ALWAYS wear safety
goggles (not glasses) that comply with ANSI safety
standard Z87.1. Everyday glasses have only impact
resistant lenses. They ARE NOT safety glasses.
3. Glasses or goggles not in compliance with ANSI
Z87.1 could cause serious injury when they break.
4. Always wear gloves to protect your hands from hot
sparks.
5. Always wear hearing protection and a dust mask.
Use only in well ventilated areas. Use of personal
protective equipment and working in a safe
environment will reduce the risk of injury.
6. Always keep hands out of the path of the grinding
disc. Avoid awkward hand positions where a
sudden slip could cause your hand to move into
the rotating disc.
7. To avoid injury from accidental starting, always
remove the battery from the angle grinder before
installing or removing grinding discs.
8. The grinding disc and guard must be securely
attached as described in this Owner’s Manual
before installing a battery in the tool. Failure to
do so will increase the risk of serious injury if the
grinding disc shatters.
9. Make sure the guard is in good condition and
securely installed before operating grinder.
10. Secure the workpiece. Use clamps or a vise to hold
the work when practical. It’s safer than using your
hand and it frees both hands to operate the tool.
11. DO NOT clamp grinder in vise or use as a fixed
grinder.
12. Grinding discs must be stored in a dry location to
prevent deterioration.
13. Before attaching the grinding disc, inspect it for
visible defects. If it is cracked, chipped or warped do
not install it.
14. Use only grinding discs in compliance with ANSI
Standard B7.1 and rated for a speed greater than
11,000 RPM.
15. DO NOT remove the soft paper in the center of
the grinding disc.
NOTE: If this paper has been previously removed,
insert some soft rubber or paper between the grinding
disc and the disc flange to prevent damage to the
grinding disc.
16. DO NOT alter or enlarge the center hole of the
grinding disc as this could result in breaking it.
17. DO NOT over tighten the clamp nut on the grinding
disc. Excessive tightening may cause the disc to
crack and possibly shatter during operation.
18. DO NOT use the grinder if the disc flange or clamp
nut is missing or if the spindle is bent.
19. Check to make sure and any extension cords are
clear of the area to be cut. Contact with “live” wires
could shock the operator or cause a fire.
20. Always hold the grinder securely with two hands
while working and at all times when it is running.
21. Never turn the grinder ON with the grinding disc or
any rotating parts touching the work surface
22. Never cover the air vents in the motor housing with
your hands while operating the grinder.
IMPORTANT SAFETY INSTRUCTIONS
The warnings, precautions, and instructions discussed
in this manual cannot cover all possible conditions
and situations that may occur. The operator must
understand that common sense and caution are
factors which cannot be built into this product, but
must be supplied by the operator.
WARNING
Use only attachments recommended or sold by
manufacturer.
1. DO NOT disassemble the cordless angle grinder.
Take it to a qualified professional when service or
repair is required. Incorrect reassembly may result
in electric shock or fire.
2. Wear approved safety eye/face shield, ear
defenders and hand protection.

4
Operating Instructions and Parts Manual 24492
20V MAX* LI-ION CORDLESS
ANGLE GRINDER
11/18
2018 OEMTOOLS™
DISPOSAL
At the end of the useful life of the OEMTOOLS®20V
MAX* Li-Ion Cordless Angle Grinder, dispose of the
components according to all state, federal and local
regulations.
BATTERY DISPOSAL
Exposure to high temperatures can cause the batteries
to explode; do not dispose of in a fire. Some countries
have regulations concerning battery disposal. Follow
all applicable regulations. Return used batteries to a
collection location for recycling. Call 800-822-8837 or
visit www.call2recycle.org to find a collection location.
PURPOSE
The OEMTOOLS®20V Max Li-Ion Cordless Angle
Grinder delivers 10,000 RPM for the most demanding
applications including grinding, polishing, cutting and
sanding.
PRODUCT SPECIFICATIONS
Voltage: 20V MAX*
Speed: 10,000 RPM
Max. Disc Diameter: 4-1/2"
Spindle Thread: 5/8"
Spindle Lock: Yes
Min. Disc Thickness: 1/4"
Weight: 7.97 Lbs.
Battery: 4.0Ah Li-Ion
Charge Time: 2 Hrs.
INSTRUCTIONS
ASSEMBLY AND OPERATION
WARNING
Always disconnect your angle grinder from the power
source when replacing grinding or cut-off discs,
adjusting the guard, cleaning the tool or when the
tool is not in use. Disconnecting the angle grinder will
prevent accidental starting that could cause serious
personal injury.
INSTALLING THE AUXILIARY HANDLE
1. Unplug the angle grinder from the power source.
2. Install the auxiliary handle (1) by screwing it
clockwise into the left side (2) of the gear housing
(3) (Fig. 1).
NOTE: The handle can be installed in two different
positions; left side or right side (Fig. 3 and 4).
WARNING
The auxiliary handle must always be used to prevent
loss of control and possible injury.
3. Tighten the auxiliary handle securely.
NOTE: Hand tighten the auxiliary handle. DO NOT over
tighten.
1
Fig. 2
Fig. 5
Fig. 1
Fig. 3
Fig. 4
Fig. 7
Fig. 1
INSTALLING THE GUARD
WARNING
The guard must be installed before installing a grinding
disc or using the angle grinder. Failure to do so could
result in serious personal injury.
1. Pull the guard clamp lever (1) outward to allow the
guard clamp to expand for installation.
2. Slide the guard clamp (2) over the spindle housing
(3) until the blade guard locating detents (4) mate
with the grooves (5) in the spindle housing (Fig. 2).
1
Fig. 2
Fig. 5
Fig. 1
Fig. 3
Fig. 4
Fig. 7
Fig. 2
3. Press the guard clamp fully onto the spindle
housing.
NOTE: Rotate the guard so it is positioned correctly
depending upon the location of the side handle in
Fig. 3 and 4.
4. Push the guard clamp lever toward the guard
clamp until the guard clamp firmly locks the guard
onto the spindle housing.

5
Operating Instructions and Parts Manual 24492
20V MAX* LI-ION CORDLESS
ANGLE GRINDER
11/18
2018 OEMTOOLS™
POSITIONING THE GUARD
WARNING
The guard must be positioned correctly to protect the
operator. Guard placement depends upon which side
of the tool the auxiliary handle is used, to afford the
greatest protection for the user. Rotate the guard to
the correct position as noted in Fig. 3 or 4 below.
1
Fig. 2
Fig. 5
Fig. 1
Fig. 3
Fig. 4
Fig. 7
Fig. 3 and 4
CHANGING A GRINDING DISC
WARNING
Use the correct size grinding disc. Never use a
grinding disc thinner than 5/32” (3.9 mm).
WARNING
Never use a grinding disc with a rated speed of less
than (11,000 RPM). A grinding disc with a rated speed
of less than 11,000 RPM can break and fly apart.
1. Lock the disc guard onto the spindle housing.
2. Depress the spindle lock button (1) and rotate the
grinding disc (2) until the spindle locks (Fig. 5).
1
Fig. 2
Fig. 5
Fig. 1
Fig. 3
Fig. 4
Fig. 7
Fig. 5
3. Grasp the grinding disc and rotate the grinding disc
in a counterclockwise direction. Once the grinding
disc and outer disc flange (3) are loose, continue
to turn the outer disc flange counterclockwise by
hand until it is removed from the spindle (4).
4. Remove the grinding disc from the spindle
NOTE: If the outer flange cannot be loosened by hand,
use the wrench provided. DO NOT remove the inner
disc flange (5).
5. Make sure the flats on the inner disc flange are
engaged with the flats on the spindle (6).
6. Place the grinding disc over the spindle with the
concave side of the disc (7) facing outward.
7. Screw the outer disc flange onto the spindle with
the flat side of nut facing away from the grinding
disc. Tighten to finger tight only.
NOTE: Make sure the raised small diameter portion of
both the inner and outer disc flanges are fitted into the
hole in the grinding disc.
8. Depress the spindle lock button and rotate the
grinding disc clockwise until the spindle locks.
9. Grasp the grinding disc and turn it clockwise to
securely tighten the grinding disc and outer flange
onto the spindle.
NOTE: You may also tighten the grinding disc and
outer flange onto the spindle using the wrench
provided.
WARNING
Never attach a wood cutting or carving blade of
any type to this angle grinder. It is designed for
grinding metal only. Use for any other purpose is not
recommended and creates a hazard which will result in
serious injury.
WARNING
Never cover the air vents. They must always be open
for proper motor cooling.
ON/OFF SWITCH AND LOCK-ON BUTTON
1. To turn the switch ON, pull the lock-off toggle back
and then squeeze the switch lever. To turn the
switch OFF, release the switch lever.
2. To activate the lock-on switch while the angle
grinder is running, press the lock-on button. While
holding the lock-on button inward, release the ON/
OFF switch. The angle grinder will continue to run.
3. To turn the angle grinder OFF, squeeze and release
the ON/OFF switch.
WARNING
When turning the angle grinder OFF, always wait until
the grinding disc comes to a complete stop before
setting the tool down.
GRINDING
1. Always select and use grinding discs that are
recommended for the material to be ground. Make
sure that the maximum operating speed of the
grinding disc selected is not less than 11,000 RPM.
2. Secure all work before beginning the grinding
operation.
3. Secure small workpieces in a vise or clamp to a
work bench.

6
Operating Instructions and Parts Manual 24492
20V MAX* LI-ION CORDLESS
ANGLE GRINDER
11/18
2018 OEMTOOLS™
WARNING
Never use your angle grinder with the guard removed. It
has been designed for use only with the guard installed.
Attempting to use the angle grinder with the guard
removed will result in loose particles being thrown against
the operator resulting in serious personal injury.
WARNING
Never use your angle grinder without eye protection.
Following this rule will reduce the risk of serious
personal injury.
4. The efficient operation of the angle grinder begins
by controlling the pressure and surface contact
between the grinding disc and the workpiece. Flat
surfaces are ground at an acute angle, normally
between 5° and 15° (Fig. 6).
1
Fig. 2
Fig. 5
Fig. 1
Fig. 3
Fig. 4
Fig. 7
Fig. 6
5. For maximum control, hold the angle grinder
in front and away from you with both hands,
keeping the grinding disc clear of the workpiece.
Start your angle grinder and let the motor and
grinding disc build up to full speed. Gradually
lower the angle grinder until the grinding disc
contacts the workpiece.
6. For best results keep the angle grinder tilted at
an angle of between 5° and 15° degrees and
continuously moving at a steady, consistent
pace. Move the angle grinder back and forth or
up and down over the work area. Keep the angle
grinder moving so that an excessive amount of
material is not removed from one area. If the angle
grinder is held in one spot too long, it will gouge
and cut grooves in the workpiece. If the angle
grinder is held at too sharp an angle, it will gouge
the workpiece because of the concentration of
pressure on a small area.
CHARGING THE BATTERY PACK:
1. Place the charger in a dry location near a 120V/60
Hz electrical outlet.
2. Plug the charger into the electrical outlet.
3. The green LED light will turn on.
4. Turn the battery pack upside down and slide it onto
the charger.
5. The green LED light will turn off and the red LED
light will begin to flash indicating the battery pack
is charging.
6. The red LED light will turn off and the green LED
light will turn on when fully charged.
7. Once the battery pack is fully charged, remove the
charger plug from the power source and remove
the battery pack from the charger.
NOTE: DO NOT charge batteries when the work area
or the battery temperature is at or below 32° F (0° C)
or above 113° F (45° C).
Green
Light Red Light Battery on the Charger Charging Status
ON OFF NO Charger connected to power supply
OFF FLASHING YES Battery charging
ON OFF YES Battery fully charged
OFF ON YES Battery defective or bad contact
ON ON YES Battery too hot or too cold to be charged

7
Operating Instructions and Parts Manual 24492
20V MAX* LI-ION CORDLESS
ANGLE GRINDER
11/18
2018 OEMTOOLS™
Figure Description Qty.
A Outside Flange 1
B Grinding Wheel 1
C Rubber Ring 1
D Inner Flange 1
E 115 mm Wheel Guard 1
F Output Spindle 1
G Dust Proof Ring 1
H Screw 4
I Spring Washer 4
J Gear Cover 1
K Bearing 1
L C-Clip 1
M Big Gear 1
N Needle Bearing 1
O C-Clip 1
P Screw 4
Q Gear Housing 1
R Spindle Lock Spring 1
S Spindle Lock Button 1
T Needle Bearing 1
U Pinion 1
V O-Ring 1
W Bearing 1
X Bearing Clamp 1
Y Screw 1
Z Joint Shaft 1
AA Rubber Tray 1
BB Screw 2
CC Joint Tray 1
DD Fan 1
EE Air Deflector 1
FF Screw 2
GG Spring Washer 2
HH Motor Flange 1
II Motor 1
JJ Lock-Off Button Spring 1
KK Cotter Pin 1
LL Lock-Off Button 1
MM Switch Button 1
NN Switch 1
OO Magnetic Ring 1
PP Pole Plate 1
QQ Battery 1
RR Housing 1
SS Screw 6
TT Handle 1
UU Ring 1
VV Spanner Holder 1
WW Spanner 1
NOTE:
Not all components of the Cordless Angle Grinder are replacement
items, but are illustrated as a convenient reference for location and
position in the assembly sequence.
Parts Diagram
Don’t forget to register your new OEMTOOLS
®
product at www.oem-tools.com.
This symbol designates that this tool is listed with
U.S. requirements by ETL Testing Laboratories, Inc.
Conforms to UL Std. 60745-1 and 60745-2-2.
Intertek
3042597
JG5972
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
TT
UU
VV
WW
T
U
V
W
X
Y
Z
AA
BB
CC
DD
EE
FF
GG
HH
SS
II
JJ
KK
LL
MM
NN
OO
PP
QQ
RR
Parts List

8
Operating Instructions and Parts Manual 24492
20V MAX* LI-ION CORDLESS
ANGLE GRINDER
11/18
2018 OEMTOOLS™
OEMTOOLS®ONE YEAR WARRANTY
If for up to one year from the date of purchase of this OEMTOOLS®product you find any defect in material
or workmanship, through normal usage, return it to the place of purchase, or to OEMTOOLS®for repair
or replacement at our discretion. In order to obtain this service, send your tool and proof of purchase,
transportation pre-paid, to OEMTOOLS®Q.A. Dept., 3580 E. Raines Road #3, Memphis, TN 38118. We will not
be responsible for lost or damaged goods during transportation; please insure your package. 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.
OEMTOOLS®does not provide warranty for products labeled other than OEM®or OEMTOOLS®. OEMTOOLS®
will not provide any warranty for products subjected to abnormal use. Abnormal use includes, but is not limited
to, abuse, accident, alteration, neglect, and unauthorized or unreasonable use or repairs. This warranty does not
cover bits, blades, files, batteries, or calibration. We recommend that you maintain your tools and sharpen or
replace blades, bits, files, and batteries as necessary. OEMTOOLS®reserves the right to makes any changes in
construction or design at any time without any obligation in incorporating such changes to tools or equipment
previously sold.
OEMTOOLS®makes every effort to ensure 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 one year 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. This warranty gives you specific legal rights, and you may
also have other rights, which vary from state to state.
CONTACT US
3580 E. Raines Road, Suite 3, Memphis, TN 38118
Tel: [phone]
www.oem-tools.com