Harbor Freight Tools Drill 07528 User Manual

®
AIR DRILL- I/2 INCH  
07528  
ASSEMBLY AND OPERATING INSTRUCTIONS  
3491 Mission Oaks Blvd., Camarillo, CA 93011  
Copyright © 2004 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 and replacement parts, please call 1-800-444-3353  
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8. Keep children away. Children must never be allowed in the work area. Do  
not let them handle machines, tools, or extension cords.  
9. Store idle equipment. When not in use, tools must be stored in a dry  
location to inhibit rust. Always lock up tools and keep out of reach of children.  
10. Do not force tool. It will do the job better and more safely at the rate for  
which it was intended. Do not use inappropriate attachments in an attempt to  
exceed the tool capacity.  
11. Use the right tool for the job. Do not attempt to force a small tool or  
attachment to do the work of a larger industrial tool.There are certain  
applications for which this tool was designed. Do not modify this tool and do  
not use this tool for a purpose for which it was not intended.  
12. Dress properly. Do not wear loose clothing or jewelry as they can be caught  
in moving parts. Protective, electrically nonconductive clothes and nonskid  
footwear are recommended when working. Wear restrictive hair covering to  
contain long hair.  
13. Use eye and ear protection. Always wear ANSI approved impact safety  
goggles. Wear an ANSI approved dust mask or respirator when working  
around metal, wood, and chemical dusts and mists. Wear ear plugs.  
14. Do not overreach. Keep proper footing and balance at all times. Do not  
reach over or across running machines.  
15. Maintain tools with care. Keep tools sharp and clean for better and safer  
performance. Follow instructions for lubricating and changing accessories.  
Inspect tool periodically and, if damaged, have them repaired by an  
authorized technician.The handles must be kept clean, dry, and free from oil  
and grease at all times.  
16. Remove adjusting keys and wrenches. Check that keys and adjusting  
wrenches are removed from the tool or machine work surface before  
plugging it in.  
17. Stay alert. Watch what you are doing, use common sense. Do not operate  
any tool when you are tired.  
18. Replacement parts and accessories. When servicing, use only identical  
replacement parts. Use of any other parts will void the warranty. Only use  
accessories intended for use with this tool. Approved accessories are  
available from Harbor Freight Tools.  
19. Maintenance. For your safety, service and maintenance should be  
performed regularly by a qualified technician.  
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20. Check for damaged parts. Before using any tool, any part that appears  
damaged should be carefully checked to determine that it will operate  
properly and perform its intended function. Check for alignment and binding  
of moving parts; any broken parts or mounting fixtures; and any other  
condition that may affect proper operation. Any part that is damaged should  
be properly repaired or replaced by a qualified technician. Do not use the tool  
if any switch does not turn On and Off properly.  
21. Do not operate tool if under the influence of alcohol or drugs. Read  
warning labels on prescriptions to determine if your judgment or reflexes are  
impaired while taking drugs. If there is any doubt, do not operate the tool.  
Warning:The warnings, cautions, and instructions discussed in this instruc-  
tion manual cannot cover all possible conditions and situations that may oc-  
cur. It must be understood 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: The brass components of this product contain lead, a chemical known  
to the State of California to cause birth defects (or other reproductive harm).  
(California Health & Safety Code 25249.5 et seq.)  
Unpacking  
When unpacking, check to make sure that the following parts are included. If any  
parts are missing or broken, please call Harbor Freight Tools at the number on the  
cover of this manual as soon as possible.  
1/2 Inch Air Drill  
(35)  
(34)  
(36)  
Assembly  
Air Connection  
2. Attach the Air Quick Coupler (not supplied) to the Air Inlet (13) fitting.  
1. If desired, for easy connection or removal, attach an Air Quick Coupler (not  
supplied) to the air compressor hose.  
3. Tighten all couplings and fittings. See photos on the next page.  
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(13)  
(30)  
(8)  
Oiler and Filter Connection  
Dirt, water, and the lack of pneumatic tool oil are major causes for tool wear. Install  
an optional oiler-filter, as illustrated below for better performance.  
1. Connect the air tool, air hoses, filter, and oiler to the Compressor Air Outlet  
as illustrated below.  
The filter and oiler (not supplied) are recommended but not mandatory for  
operation.  
If the filter and oiler are not used, connect the air hose directly to the 1/4 inch,  
18 NPT connector located at the Air Inlet (13) fitting. Also, a few drops of  
pneumatic tool oil must be added through the air line before each use.  
Note: Use pipe thread seal or Teflon tape on all threaded connections.  
Side Handle  
1. Slip the Brass Ring (35) over the Clamp Nut (30) and point the treads to  
either the left or right side for the desired operation. See photo on the cover.  
2. Screw the Handle (34) onto the threads of the Brass Ring and tighten.  
Operation  
1. Attach the desired bit (not supplied) to the Air Drill Chuck (32), making sure it  
is locked in place with Chuck Key (36).  
2. Connect the compressor air hose (3/8”) to the Air Inlet (13) on the handle of  
the housing (1).  
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3. Set the (1.5 HP minimum) air compressor pressure regulator to 90 PSI.  
If any air leaking, disconnect the air hose and repair the leak.  
4. Grip the Air Drill firmly with both hands and press down on the Trigger (8).  
Caution: If the Air Drill will not turn, or if it stalls while drilling, do not raise the  
outlet pressure of the air compressor. Do not continue with attempts to drill  
until the problem is resolved.  
5. When you are finished drilling, turn the compressor off, then remove the hose  
connection to the Air Drill.  
Maintenance  
1. After each use, wipe the Air Drill with a clean cloth to remove any dirt and  
grease buildup.  
2. To maintain tool life, always lubricate the air line by adding a few drops of  
pneumatic tool oil to the air line before each use. Or, install the automatic  
oiler-filter system as illustrated on page 5.  
3. Before each use, drain water out of the air compressor tank and  
condensation from the air lines. Refer to the Air Compressor Operator’s  
Manual.  
ManualTool Lubrication  
1. Disconnect the Air Drill from the air supply and turn it so the Air Inlet fitting is  
facing upward.  
2. Hold the Trigger (8) in and place a few drops of pneumatic tool oil into the air  
inlet (use SAE #10 weight oil if air tool oil is not available). Holding the Trigger  
lever in helps circulate the oil in the air motor.  
3. Connect the Air Drill to the air supply and cover the Muffler Cover (11) with a  
towel. Run for a few seconds. Excess oil with be blown out the Muffler Cover.  
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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Parts List  
Item  
1.  
2.  
3.  
4.  
5.  
6.  
7.  
8.  
Description  
Housing  
O-ring  
O-ring  
Valve Stem  
O-ring  
Bushing  
Trigger Spring  
Trigger  
Trigger Screw  
Pin  
Muffler Cover  
Screw  
Air Inlet  
Qty  
1
1
1
1
3
1
1
1
1
1
1
2
1
2
1
1
Item  
19.  
20.  
21.  
22.  
23.  
24.  
25.  
26.  
27.  
28.  
29.  
30.  
31.  
32.  
33.  
34.  
35.  
36.  
Description  
Qty  
1
1
1
1
6
6
1
1
1
2
2
1
1
1
1
1
Pin  
Front Plate  
Washer  
Gear  
Gear  
Pin  
Gear Plate  
Gear  
Work Spindle  
Thread Ring Gear  
Bearing  
Clamp Nut  
Washer  
Chuck  
Chuck Screw  
Handle  
Brass Ring  
Chuck Key  
9.  
10.  
11.  
12.  
13.  
14.  
15.  
16.  
17.  
18.  
Bearing  
End Plate  
Rotor  
Rotor Blade  
Cylinder  
5
1
1
1
NOTE: Some parts are listed and shown for illustration purposes only and  
are not available individually as replacement parts.  
Assembly Drawing  
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