Central Pneumatic 32046 Installation manual

1/4” AIR ANGLE DIE GRINDER
32046
SET UP AND OPERATING INSTRUCTIONS
Visit our website at: http://www.harborfreight.com
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Copyright©1997, 2009 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. Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein. Tools required for as-
sembly and service may not be included.
For technical questions or replacement parts, please call 1-800-444-3353.
Revised 09i

SKU 32046 For technical questions, please call 1-800-444-3353. Page 2
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.
Safety Alert Symbol and Signal
Words
In this manual, on the labeling,
and all other information provid-
ed 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
follow this symbol to avoid
possible injury or death.
DANGER indicates
a hazardous
situation which, if not
avoided, will result in death or
serious injury.
WARNING
indicates a
hazardous situation which, if
not avoided, could result in
death or serious injury.
CAUTION, used
with the safety
alert symbol, indicates a
hazardous situation which, if
not avoided, could result in
minor or moderate injury.
NOTICE is used to
address practices
not related to personal injury.
CAUTION, without
the safety alert
symbol, is used to address
practices not related to
personal injury.
IMPORTANT SAFETY
INSTRUCTIONS
INSTRUCTIONS PERTAINING
TO A RISK OF FIRE,
ELECTRIC SHOCK, OR
INJURY TO PERSONS
WARNING – When using tools, basic pre-
cautions should always be followed,
including the following:
General
To reduce the risks of electrica.
shock, re, and injury to persons,
read all the instructions before us-
ing the tool.
Work area
Keep the work area clean and wella.
lighted. Cluttered benches and dark
areas increase the risks of electric
shock, re, and injury to persons.
Do not operate the Air Angle Dieb.
Grinder in explosive atmospheres,
such as in the presence of am-
mable liquids, gases, or dust. The
Air Angle Die Grinder is able to create
sparks resulting in the ignition of the
dust or fumes.

SKU 32046 For technical questions, please call 1-800-444-3353. Page 3
Keep bystanders, children, andc.
visitors away while operating the
Air Angle Die Grinder.Distractions
are able to result in the loss of control
of the tool.
Personal safety
Stay alert. Watch what you are do-a.
ing and use common sense when
operating the tool. Do not use the
tool while tired or under the inu-
ence of drugs, alcohol, or medica-
tion. A moment of inattention while
operating the tool increases the risk
of injury to persons.
Dress properly. Do not wear looseb.
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.
Avoid unintentional starting. Bec.
sure the switch is off before con-
necting to the air supply. Do not
carry the Air Angle Die Grinder with
your nger on the switch or connect
the tool to the air supply with the
switch on.
Remove adjusting keys andd.
wrenches before connecting an air
hose to the Air Angle Die Grinder
on. A wrench or a key that is left at-
tached to a rotating part of the tool
increases the risk of personal injury.
Do not overreach. Keep propere.
footing and balance at all times.
Proper footing and balance enables
better control of the tool in unexpect-
ed situations.
f. Use safety equipment. A
dust mask, non-skid safety
shoes and a hard hat must
be used for the applicable
conditions. Wear heavy-duty work
gloves during use.
g. Always wear eye protec-
tion. Wear ANSI-ap-
proved safety goggles.
h. Always wear hearing
protection when using
the tool. Prolonged expo-
sure to high intensity noise
is able to cause hearing loss.
Risk of Electric Shock. This Airi.
Angle Die Grinder is not provided
with an insulated gripping surface.
Contact with a ″live″ wire will also
make exposed metal parts of the tool
″live″ and shock the operator.
Avoid body contact with groundedj.
surfaces such as pipes, radiators,
ranges and refrigerators. There is
an increased risk of electric shock if
your body is grounded.
Explore the workpiece to avoidk.
contact with hidden wiring. Thor-
oughly investigate the workpiece for
possible hidden wiring before per-
forming work. Contact with live wiring
will shock the operator.
Tool use and care
Use clamps or another practicala.
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.

SKU 32046 For technical questions, please call 1-800-444-3353. Page 4
Do not force the tool.b. Use the
correct tool for the application. The
correct Air Angle Die Grinder will do
the job better and safer at the rate for
which the tool is designed.
Do not use the tool if the switchc.
does not turn the tool on or off.
Any tool that cannot be controlled
with the switch is dangerous and
must be repaired.
Disconnect the tool from the aird.
source before making any adjust-
ments, changing accessories, or
storing the tool. Such preventive
safety measures reduce the risk of
starting the Air Angle Die Grinder
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.
Store the Air Angle Die Grindere.
when it is idle out of reach of chil-
dren and other untrained persons.
A die grinder is dangerous in the
hands of untrained users.
Maintain the tool with care.f. A
properly maintained tool is easier to
control.
Check for misalignment or bind-g.
ing of moving parts, breakage of
parts, and any other condition
that affects the tool’s operation.
If damaged, have the Air Angle Die
Grinder serviced before using. Many
accidents are caused by poorly main-
tained tools. There is a risk of burst-
ing if the tool is damaged.
Use only accessories that areh.
identied by the manufacturer for
the specic tool model. Use of an
accessory not intended for use with
the specic tool model, increases the
risk of injury to persons.
Service
Tool service must be performeda.
only by qualied repair personnel.
When servicing the Air Angle Dieb.
Grinder, use only identical replace-
ment parts. Use only authorized
parts.
Use only the lubricants suppliedc.
with the tool or specied by the
manufacturer.
Air source
a. Never connect to an air
source that is capable of
exceeding 200 psi. Over
pressurizing the tool may
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.
Never use oxygen, carbon dioxide,b.
combustible gases or any bottled
gas as an air source for the tool.
Such gases are capable of explosion
and serious injury to persons.
SAVE THESE
INSTRUCTIONS.

SKU 32046 For technical questions, please call 1-800-444-3353. Page 5
SYMBOLS AND
SPECIFIC SAFETY
INSTRUCTIONS
Symbol Denitions
Symbol Property or statement
noNo-load speed
.../min Revolutions or reciprocation per
minute
PSI Pounds per square inch of pressure
ft-lb Foot-pounds of torque
BPM Blows per minute
CFM Cubic Feet per Minute ow
SCFM Cubic Feet per Minute ow at
standard conditions
NPT National pipe thread, tapered
NPS National pipe thread, straight
WARNING marking concerning Risk
of Eye Injury. Wear ANSI-approved
eye protection.
WARNING marking concerning Risk
of Hearing Loss. Wear hearing
protection.
WARNING marking concerning Risk
of Respiratory Injury. Wear NIOSH-
approved dust mask/respirator.
WARNING marking concerning Risk
of Explosion.
Specic Safety Instructions
The warnings and precautions dis-1.
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.
WARNING: Some dust created by2.
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 lter out microscopic
particles. (California Health & Safety
Code § 25249.5, et seq.)
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-
ductive harm). (California Health &
Safety code § 25249.5, et seq.)
Only use with accessories rated to3.
handle the forces exerted by this tool
during operation. Other accessories
not designed for the forces gener-
ated may break and forcefully launch
pieces.
Attach all accessories properly to the4.
tool before connecting the air sup-
ply. A loose accessory may detach or
break during operation.

SKU 32046 For technical questions, please call 1-800-444-3353. Page 6
Obey the manual for the air compres-5.
sor used to power this tool.
Install an in-line shutoff valve to allow6.
immediate control over the air supply
in an emergency, even if a hose is
ruptured.
Do not lay the Air Angle Die Grinder7.
down until it has come to a complete
stop. Moving parts can grab the
surface and pull the tool out of your
control.
Vibration Precautions
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:
Anyone using vibrating tools regu-1.
larly or for an extended period should
rst 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
this tool. If you feel any medical or
physical symptoms related to vibra-
tion (such as tingling, numbness, and
white or blue ngers), seek medical
advice as soon as possible.
Do not smoke during use. Nico-2.
tine reduces the blood supply to the
hands and ngers, increasing the risk
of vibration-related injury.
Wear suitable gloves to reduce the3.
vibration effects on the user.
Use tools with the lowest vibration4.
when there is a choice between dif-
ferent processes.
Include vibration-free periods each5.
day of work.
Grip tool as lightly as possible (while6.
still keeping safe control of it). Let
the tool do the work.
To reduce vibration, maintain tool as7.
explained in this manual. If abnormal
vibration occurs, stop immediately.
SAVE THESE
INSTRUCTIONS.

SKU 32046 For technical questions, please call 1-800-444-3353. Page 7
FUNCTIONAL DESCRIPTION
Specications
Maximum Air Pressure 90 PSI
Air Inlet 1/4” -18 NPT Female
Maximum Speed* 20,000 RPM
Average Air Consumption 3 SCFM @ 90 PSI
Collet 1/4”
* Maximum speed at stated maximum air pressure. Ex-
cess air pressure is hazardous and may cause the tool
to exceed stated maximum speed.
Air Angle Die Grinder Controls
Figure 1
Air Inlet (1)
Control Lever (4)
Collet (31)
(inside)
Collet Nut (32)
INITIAL TOOL SET UP
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.
Note: For additional information regarding
the parts listed in the following pages,
refer to the Assembly Diagram near
the end of this manual.
Unpacking
When unpacking, 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 pos-
sible.
This air tool may be shipped with a•
protective plug covering the air inlet.
Remove this plug before set up.
Air Supply
TO PREVENT
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.
1. Incorporate an in-line oiler, shut-off
valve, regulator with pressure gauge,
and lter for best service, as shown in
the diagram above. An in-line shut-
off valve is an important safety

SKU 32046 For technical questions, please call 1-800-444-3353. Page 8
device because it controls the air
supply even if the air hose is rup-
tured.
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.
Attach an air hose to the compres-2.
sor’s air outlet. Connect the air hose
to the air inlet of the tool. Other com-
ponents, such as a connector and
quick coupler, will make operation
more efcient, but are not required.
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: Air ow, and therefore Air Angle Die
Grinder performance, can be hin-
dered by undersized air supply com-
ponents.
The air hose must be long enough3.
to reach the work area with enough
extra length to allow free movement
while working.
Make sure tool’s Control Lever (4) is4.
in the off position; refer to Operation
section for description of controls.
Close the in-line safety valve be-5.
tween the compressor and the tool.
Turn on the air compressor according6.
to the manufacturer’s directions and
allow it to build up pressure until it
cycles off.
Adjust the air compressor’s output 7.
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.
Inspect the air connections for leaks.8.
Repair any leaks found.
If the tool will not be used at this9.
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.
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.
Inspect tool before use, looking
for damaged, loose, or missing
parts. If any problems are
found, do not use tool until
repaired.
Tool Set Up
TO PREVENT
SERIOUS INJURY
FROM ACCIDENTAL
OPERATION:
Detach the air supply, safely
discharge any residual air
pressure in the tool, before
installing bits or making any
adjustments to the die
grinder.

SKU 32046 For technical questions, please call 1-800-444-3353. Page 9
Specic Operating Instructions
If an automatic oiler is not used,1. add
a few drops of Pneumatic Tool Oil
inside the air inlet before every use.
Note: Air Angle Die Grinder is de-2.
signed to be used with grinding
attachments, and sanding discs and
other attachments.
Use the two Wrenches (33/34) to3.
loosen the Collet (31) and Collet Nut
(32) . See Figure 2 below.
Wrench (33)
Wrench (34)
Collet Nut (32)
Housing (3)
Figure 2
4. Insert 1/4” diameter shank of a Grind-
ing Accessory (not included) fully into
Collet Nut. Then, rmly re-tighten
Collet Nut to lock both the Collet and
Grinding Accessory in place.
Connect air supply hose to Air Inlet5.
(1). Turn on air compressor and set
its regulator to the maximum 90 PSI
for Die Grinder.
WARNING!6. Grip the Die Grinder
rmly with both hands.
Slowly apply hand pressure to the7.
Control Lever (4) until the desired
speed is obtained.
NOTE: The Die Grinder always turns the
Accessory clockwise (reference:
while holding the tool as you would
when operating it). Always point abra-
sive material away from you.
With a rm grip on the Die Grinder, 8.
lightly apply accessory to workpiece,
slowly and steadily moving tool to
right and left until achieving desired
appearance (nish) on workpiece.
If Air Angle Die Grinder requires9.
more force to accomplish task, verify
that it receives sufcient, unobstruct-
ed airow (CFM) and increase pres-
sure (PSI) output of regulator up to
maximum air pressure rating of tool.
If the tool still does not have suf-10.
cient force at maximum pressure
and sufcient airow, then a larger
tool may be required.
CAUTION!11. TO PREVENT TOOL
AND ACCESSORY FAILURE, RE-
SULTING IN INJURY:
Do not exceed the tool’s maxi-
mum air pressure rating of 90 PSI.
Once work is completed, release12.
hand pressure on Control Lever.
Turn off air compressor. Slowly13.
squeeze Control Lever to release
any remaining air pressure from Die
Grinder. Then disconnect air hose.
Remove Accessory from Die Grind-14.
er. Store the tool in a clean and dry
location out of the reach of children.

SKU 32046 For technical questions, please call 1-800-444-3353. Page 10
USER-MAINTENANCE
INSTRUCTIONS
Procedures not specically
explained in this manual
must be performed only by a
qualied 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, and release the
throttle and/or turn the switch
to its off position before
performing any inspection,
maintenance, or cleaning
procedures.
TO PREVENT SERIOUS
INJURY FROM TOOL
FAILURE:
Do not use damaged
equipment. If abnormal
noise, vibration, or leaking
air occurs, have the problem
corrected before further use.
TO PREVENT EXPLOSION:
Lubricate the tool only
with specied 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 ammable, causing an
explosion.
Cleaning, Maintenance, and
Lubrication
Note: These procedures are in addition to
the regular checks and maintenance
explained as part of the regular op-
eration of the air-operated tool.
Daily - Air Supply Maintenance:1.
Every day, perform maintenance on
the air supply according to the com-
ponent manufacturers’ instructions.
The lubricator’s oil level needs to be
maintained and the moisture lter
must be regularly drained. Perform-
ing routine maintenance on the air
supply will allow the tool to operate
more safely and will also reduce wear
on the tool.
Figure 3
Grease Fitting
2. Periodically - Grease Lubrication:
Lubricate the internal mechanism of
the tool, using white lithium grease
through the grease ttings.
Apply a few drops of oil to the Control3.
Lever. Work the Lever a few times to
lubricate.

SKU 32046 For technical questions, please call 1-800-444-3353. Page 11
Troubleshooting
Problem Possible Causes Likely Solutions
Decreased
output.
Not enough air pressure and/1.
or air ow.
Obstructed Control Lever.2.
Incorrect lubrication or not3.
enough lubrication.
Blocked air inlet screen (if4.
equipped).
Air leaking from loose5.
housing.
Air connection contaminated.6.
Vane wear or damage.7.
Check for loose connections and make1.
sure that air supply is providing enough
air ow (CFM) at required pressure (PSI)
to the tool’s air inlet. Do not exceed 90
PSI maximum air pressure.
Clean around Control Lever to ensure2.
free movement.
Lubricate using air tool oil and grease3.
according to directions.
Clean air inlet screen.4.
Make sure housing is properly assembled5.
and tight.
Have qualied technician clean and 6.
lubricate tool. Install in-line lter in air
supply as stated in manual.
Replace all vanes.7.
Housing heats
up during use.
Incorrect lubrication or not1.
enough lubrication.
Worn parts.2.
Lubricate using air tool oil and grease1.
according to directions.
Have qualied technician inspect internal 2.
mechanism and replace parts as needed.
Severe air
leakage.
(Slight air
leakage
is normal,
especially on
older tools.)
Cross-threaded housing1.
components.
Loose housing.2.
Damaged valve or housing.3.
Dirty, worn or damaged4.
valve.
Check for incorrect alignment and uneven1.
gaps. If cross-threaded, disassemble
and replace damaged parts before use.
Tighten housing assembly. If housing2.
cannot tighten properly, internal parts
may be misaligned.
Replace damaged components.3.
Clean or replace valve assembly.4.
Follow all safety precautions whenever diagnosing or servicing the
tool. Disconnect air supply before service.

SKU 32046 For technical questions, please call 1-800-444-3353. Page 12
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 BUY-
ER 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.
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 32046 For technical questions, please call 1-800-444-3353. Page 13
Part Description Qty
1 Air Inlet 1
2 End Cap 1
3 Housing 1
4 Control Lever 1
5 Spring Pin 1
6 Bushing 1
7 Valve 1
8 O-Ring 1
9 Spring 1
10 Speed 1
11 O-Ring 1
12 O-Ring 1
13 Valve 1
14 Ball Bearing 2
15 Rear End Plate 1
16 Ball 3
17 Cylinder 1
Part Description Qty
18 Rotor 1
19 Vanes 4
20 Bushing 1
21 Front End Plate 1
22 Ball Bearing 2
23 Nipple 1
24 Bevel Gear 1
25 Nut 1
26 Angle Head 1
27 Bevel Gear 1
28 Key 1
29 Chuck Casing 1
30 Bearing Cap 1
31 Collet 1
32 Collet Nut 1
33 Wrench 1
34 Wrench 1
PARTS LIST & ASSEMBLY DIAGRAM

SKU 32046 For technical questions, please call 1-800-444-3353. Page 14
LIMITED 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 prod-
uct 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 EXPRESS-
LY 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 com-
plaint must accompany the merchandise. If our inspection veries the defect, we will ei-
ther 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 re-
paired 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 specic legal rights and you may also have other rights
which vary from state to state.
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • [phone]