Harbor Freight Tools Grinder 52848 User Manual

AIR ANGLE DIE GRINDER  
FRONT EXHAUST  
Operating and Maintenance Instructions  
Distributed exclusively by  
®
Harbor Freight Tools .  
3491 Mission Oaks Blvd., Camarillo, CA 93011  
Copyright © 2001 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 con-  
sent of Harbor Freight Tools.  
For technical questions please call 1-800-444-3353  
 
8.  
9.  
STAY ALERT. Watch what you are doing at all times. Use common sense. Do not use the  
Air Angle Die Grinder when you are tired or distracted from the job at hand.  
CHECK FOR DAMAGED PARTS. Before using the Air Angle Die Grinder, carefully check  
that it will operate properly and perform its intended function. Check for damaged parts and  
any other conditions that may affect the operation of the Air Angle Die Grinder. Replace or  
repair damaged or worn parts immediately.  
10.  
REPLACEMENT PARTS AND ACCESSORIES. When servicing, use only identical replace-  
ment parts. Only use tools and accessories intended for use with this Air Angle Die Grinder.  
Approved tools and accessories are available from Harbor Freight Tools.  
11.  
12.  
13.  
MAINTAIN THESE PRODUCTS WITH CARE. Keep this tool and accessories clean and  
dry for better and safer performance.  
MAINTENANCE: For your safety, service and maintenance should be performed regularly  
by a qualified technician.  
USE THE RIGHT PRODUCTS FOR THE RIGHT JOB. There are certain applications for  
which this Air Angle Die Grinder was designed. Do not use a small tool or accessory to do  
the work of a larger industrial tool or accessory. Do not use this Air Angle Die Grinder for a  
purpose for which it was not intended.  
SPECIFIC PRODUCT WARNINGS AND PRECAUTIONS  
1.  
USE CLEAN, DRY, REGULATED COMPRESSED AIR AT 90 PSI. Do not exceed the  
recommended 90 PSI. Never use oxygen, carbon dioxide, combustible gases or any other  
bottled gas as a power source for this tool.  
2.  
DO NOT MODIFY THE SAFETY AIR SHUT-OFF SWITCH LOCATED ON THE THROTTLE  
LEVER (PART #2). The Air Angle Die Grinder features a Shut-Off Switch which, when  
pressure is released from the Throttle Lever, will automatically shut down the unit. For your  
safety and the safety of others, do not modify the Shut-Off Switch in any way.  
3.  
4.  
WHEN CONNECTING TO THE AIR SUPPLY:  
A. If an automatic oiler is not used, add two drops of air tool oil into the air inlet  
of the Air Angle Die Grinder. (See Figure A.)  
B. Turn on the compressor and set the regulator to the recommended 90 PSI for this tool.  
ALWAYS DISCONNECT TOOL FROM ITS AIR SUPPLY AND RELEASE ALL BUILT UP  
AIR PRESSURE BEFORE PERFORMING ANY SERVICES OR MAINTENANCE such as  
cleaning or changing accessories on the Air Angle Die Grinder, leaving the work area,  
moving the Air Angle Die Grinder from one location to another, handing the Air Angle Die  
Grinder to another person, etcetera. (See Figure A on page 4.)  
5.  
WARNING! Some dust created by power sanding, sawing, grinding, drilling, and other  
construction activities, contain 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 chemically treated lumber. Your risk from these exposures varies,  
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.)  
SKU 52848  
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REV 02/06  
 
FIGURE A  
UNPACKING  
When unpacking, check to make sure all parts shown on the Parts List and Assembly Diagram  
are included. If any parts are missing or broken, please call Harbor Freight Tools at the number  
shown on the cover of this manual as soon as possible.  
OPERATING INSTRUCTIONS  
ALL PARTS BELOW REFER TO THE PARTS LISTED AND SHOWN IN THIS MANUAL.  
To Connect The Air Angle Die GrinderTo An Air Hose:  
1.  
2.  
3.  
The Air Angle Die Grinder requires the attachment of a 1/4” NPT Quick Connector (available  
from Harbor Freight Tools). (See Figure A and Figure B.)  
Wrap the male threads of the Quick Connector with about 3” of Teflon tape. Then, wrench  
tighten the Quick Connector into the Air Inlet of the Air Angle Die Grinder.  
Next, connect the Quick Coupler of an air hose onto the Quick Coupler of the Air Angle Die  
Grinder. The Air Die Grinder is now ready for use.  
FIGURE B  
To Insert/Change Collets In The Air Angle Die Grinder:  
1.  
The Air Angle Die Grinder comes with two Collets: A 1/8” Collet and a 1/4” Collet (part #32).  
This allows the Air Angle Die Grinder to accept grinding wheels with either a 1/8” or 1/4”  
shank. (See Figure B and Assembly Diagram.)  
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2.  
3.  
To change Collets (part #32) you will need to use the two accessory Collet Wrenches.  
With one Wrench hold the Work Spindle (part #30) in place. Use the other Wrench to turn  
the Collet Jacket (part #33) counterclockwise.  
4.  
5.  
Remove the Collet Jacket (part #33) and insert the appropriate size Collet (part #32) into the  
Work Spindle (part #30).  
With one Wrench, hold the Work Spindle (part #30) in place. Use the other Wrench to turn  
the Collet Jacket (part #33) clockwise to tighten and lock the Collet firmly in place.  
To Install A Grinding Wheel:  
1.  
With one Wrench hold the Work Spindle (part #30) in place. Use the other Wrench and turn  
the Collet Jacket (part #33) counterclockwise to loosen. (See Figure B and Assembly  
Diagram.)  
2.  
3.  
Insert the shank of a grinding wheel in the appropriate size Collet (part #32).  
(See above for installing/changing Collets.)  
With one Wrench, hold the Work Spindle (part #30) in place. Use the other Wrench to turn  
the Collet Jacket (part #33) clockwise to tighten and lock the grinding wheel firmly in place.  
CLEANING AND MAINTENANCE  
1.  
Before each use, examine the general condition of the entire compressor system. Inspect  
guards, switches, power plug and cord assembly, extension cord, and air hoses for damage.  
Check for loose screws, misalignment, binding of moving parts, improper mounting, broken  
parts and any other condition that may affect its safe operation. If abnormal noise or vibra-  
tion occurs, turn off the air compressor immediately and have the problem corrected before  
further use. Do not use a damaged tool.  
2.  
3.  
Caution: Always disconnect the Air Angle Die Grinder from its air supply source and release  
all built up air pressure before performing any cleaning, servicing, or maintenance.  
To clean the outside of the Air Angle Die Grinder, wipe with a clean, damp cloth and dry. If  
necessary, use a mild detergent. Do not immerse the Air Angle Die Grinder in liquids.  
PLEASE READ THE FOLLOWING CAREFULLY  
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY.  
NEITHER THE MANUFACTURER NOR 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.  
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PAGE 5  
 
PARTS LIST / ASSEMBLY DIAGRAM  
NOTE: Some parts are listed and shown for illustration  
purposes only, and are not available individually  
as replacement parts.  
REV 07k  
SKU 52848  
PAGE 6  
 

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