Harbor Freight Tools Nail Gun 91053 User Manual

®
FRAMING NAILER  
34 DEGREE & 28 DEGREE MAGAZINE ANGLES  
Models 91053, 91054, 92147, & 92185  
ASSEMBLY AND OPERATING INSTRUCTIONS  
®
3491 Mission Oaks Blvd., Camarillo, CA 93011  
TO PREVENT SERIOUS INJURY,  
READ AND UNDERSTAND ALL WARNINGS  
AND INSTRUCTIONS BEFORE USE.  
©
®
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 or replacement parts, please call 1-800-444-3353.  
 
5.  
6.  
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. It will do the job better and more safely at the rate for  
which it was intended. Do not modify this tool and do not use this tool for a pur-  
pose for which it was not intended.  
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.  
7.  
8.  
Do not overreach. Keep proper footing and balance at all times. Do not reach  
over or across running machines or air hoses.  
Use eye and ear protection. Always wear ANSI approved impact safety  
goggles and appropriate hearing protection. Wear a full face shield if you  
are producing metal filings or wood chips. Wear an ANSI approved dust  
mask or respirator when working around metal, wood, and chemical dusts  
and mists. Other people in the work area must also wear ANSI approved  
impact safety goggles.  
9.  
Maintain tools with care. Keep tools clean for better and safer performance.  
Follow instructions for lubricating and changing accessories. Inspect tool cords  
and air hoses periodically and, if damaged, have them repaired by an authorized  
technician. The handle must be kept clean, dry, and free from oil and grease at  
all times. Do not operate a tool if any portion of the tool’s operating controls are  
inoperable, disconnected, altered or not working properly.  
10.  
11.  
12.  
Disconnect Air Hose and release any built-up air pressure. Never service the  
Nailer, clear jams, or disassemble with the air hose attached. Always release any  
built-up air even after disconnecting hose. Disconnect the Nailer when not in use.  
Remove adjusting keys and wrenches. Check that keys and adjusting  
wrenches are removed from the tool or machine work surface before attaching to  
an air source.  
Avoid unintentional starting. Be sure the trigger is in the Off position when not  
in use and before plugging in. Do not carry any tool with your finger on the trig-  
ger, whether it is attached to an air source or not. Do not point the tool towards  
yourself or anyone whether it contains fasteners or not.  
13.  
Stay alert. Watch what you are doing, use common sense. Do not operate any  
tool when you are tired.  
14.  
Check for damaged parts. Before using any tool, any part that appears dam-  
aged should be carefully checked to determine that it will operate properly and  
91053, 91054  
92147, & 92185  
Skus  
For technical questions, please call 1-800-444-3353.  
Page 3  
 
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 re-  
placed by a qualified technician. Do not use the tool if the trigger does not oper-  
ate properly.  
15.  
16.  
Guard against electric shock. Prevent body contact with grounded surfaces  
such as pipes, radiators, ranges, and refrigerator enclosures.  
Replacement parts and accessories. This product is to be repaired and ser-  
viced only by a qualified technician. When this product is serviced, only identical  
replacement parts should be used. 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.  
17.  
18.  
Do not operate tool if under the influence of alcohol or drugs. Read warning  
labels if taking prescription medicine to determine if your judgement or reflexes  
are impaired while taking drugs. If there is any doubt, do not operate the tool.  
Use proper size and type extension cord. If an extension cord is required, it  
must be of the proper size and type to supply the correct current to the compres-  
sor without heating up. Otherwise, the extension cord could melt and catch fire,  
or cause electrical damage to the tool. Check your air compressor’s manual for  
the appropriate size cord. It is also possible that the use of an extension cord  
may cause your circuit breaker to trip or your panel fuse to break. If this happens,  
either use the compressor without an extension cord or find a larger amperage  
circuit to use.  
19.  
Maintenance. The maintenance outlined in the maintenance section should be  
performed regularly. For your safety, this product should be serviced or repaired  
regularly only by a qualified technician.  
20.  
21.  
Compressed air only. Never use combustible gas as a power source.  
Do not load nails with the trigger or safety depressed. Unintentional  
firing may occur. Do not load nails when the air hose is connected to  
the tool. Always assume the tool contains fasteners.  
22.  
23.  
Disconnect air supply before loading the Nailer. Before reloading (or making  
any adjustments to) the Nailer, make sure the compressed air is disconnected.  
Fire fasteners into an appropriate work surface only. Do not attempt to fire  
fasteners into surfaces too hard to penetrate. Do not drive fasteners on top of  
other fasteners, or at too steep an angle. Fasteners can ricochet causing per-  
sonal injury. Never fire the Nailer into the air, or point it toward yourself or another  
91053, 91054  
92147, & 92185  
Skus  
For technical questions, please call 1-800-444-3353.  
Page 4  
 
person. Always wear ANSI approved safety goggles during use, maintenance,  
and reloading.  
24.  
25.  
Do not fire fasteners too close to the edge of a workpiece. They may split the  
workpiece and fly free, causing personal injury.  
Take caution, as some woods contain preservatives such as copper chro-  
mium arsenate (CCA) which can be toxic. When working with these materials  
extra care should be taken to avoid inhalation and minimize skin contact.  
26.  
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 and other masonry products  
* Arsenic and chromium from chemically treated lumber.  
(California Health & Safety Code § 25249.5, et seq.)  
26.  
27.  
Stay within air pressure capacity. Never operate the Nailer above 125 PSI.  
Hold tool away from head and body. During operation the Nailer may kick back  
causing injury.  
28.  
29.  
Transport Nailer safely. Always disconnect air supply when moving the tool in  
the workplace. Carry the tool by the handle to avoid contact with the trigger.  
Avoid working alone. If an accident happens, an assistant can bring help.  
Note: Performance of the compressor (if powered by line voltage) may vary depending  
on variations in local line voltage. Extension cord usage may also affect the tool  
performance.  
Warning: The warnings, cautions, and instructions discussed in this instruction  
manual cannot cover all possible conditions and situations that may occur. 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.  
Unpacking  
When unpacking, check to make sure all parts shown in the Parts List on page 12  
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.  
REV 11/06  
91053, 91054  
92147, & 92185  
Skus  
For technical questions, please call 1-800-444-3353.  
Page 5  
 
Operation  
For best service, you should incorporate an oiler, regulator, and inline filter, as  
shown in the diagram below. Hoses, couplers, oilers, regulators, and filters are all avail-  
able at Harbor Freight Tools.  
TO  
ROOFING  
NAILER  
1.  
To connect this tool, we recommend you use the included quick connector.  
Note: If you are not using an automatic oiler system, before operation, add a few  
drops of Pneumatic Tool Oil to the airline connection. Add a few drops more after  
each hour of continual use.  
2.  
3.  
Set the air pressure on your compressor from 75-125 PSI. Do not exceed the  
maximum air pressure.  
Check the air connection for leaks.  
Note: The amount of air pressure effects how deep the nails/staples will be  
driven. It is suggested that you experiment on scrap material.  
4.  
Check the air connection for leaks and disconnect the Nailer/Stapler.  
Testing the Full Sequential Safety Trip Mechanism  
Warning: Even though the nailer should be empty during this procedure,  
ALWAYS point the nailer at a piece of scrap wood when testing.  
1.  
2.  
3.  
Make sure the tool is disconnected from the power supply.  
Completely empty the Magazine (74) of nails.  
The Nailer should not fire if the Lower Safety (32) is not depressed against the  
workpiece.  
REV 11/06  
91053, 91054  
92147, & 92185  
Skus  
For technical questions, please call 1-800-444-3353.  
Page 6  
 
4.  
5.  
6.  
Make sure the Trigger (48) and Lower Safety (32) move freely, without sticking -  
see the illustration below.  
Connect the air supply to the tool at the Quick Connector (87). Set the regulator at  
the recommended 75 to 125 PSI.  
Test the tool by depressing the Lower Safety (32) against the workpiece without  
pulling the Trigger (48). The Tool must not cycle (fire). If it cycles (fires), stop  
immediately and have it repaired by a qualified service technician.  
7.  
8.  
Hold the tool away or off of the workpiece. The Lower Safety (32) of the tool  
should return to its original position. Squeeze the Trigger (48). The tool should  
not cycle (fire). If the tool fires, stop immediately and have it repaired by a  
qualified service technician.  
Depress the Lower Safety (32) against the workpiece and squeeze the Trigger  
(48). The tool must cycle (fire) only once. Release the Trigger and squeeze it  
again. The tool must not cycle (fire). With the Trigger held, carefully lift the  
nailer and press it against the workpiece again. The tool must not cycle (fire).  
If it fails to perform in the manner explained in bold, have it repaired by a qualified  
service technician.  
QUICK CONNECTOR (87)  
TRIGGER (48)  
LOWER SAFETY (32)  
TRIGGER (48)  
LOWER SAFETY (32)  
REV 11/06  
91053, 91054  
92147, & 92185  
Skus  
For technical questions, please call 1-800-444-3353.  
Page 7  
 
Loading Nails  
ALWAYS WEAR ANSI APPROVED IMPACT SAFETY GOGGLES WHEN  
RELOADING OR DOING ANY OTHER MAINTENANCE ON THIS TOOL.  
Other people in the work area must also wear ANSI approved impact safety  
goggles.  
Warning! Make sure the Nailer is not attached to the air hose whenever loading the  
tool.  
1.  
2.  
Slide the Tab (64) back and the Latch (78) will hold it in place.  
Holding the nailer with the nose pointing slightly down, load a stick of nails into the  
top slot.  
3.  
While holding the Tab back, carefully press the Latch. BE CAREFUL. When you  
press the Latch (78), theTab (64) will spring forward with force. Slowly and cautiously  
allow the tab to slide forward.  
NAILS (91)  
TAB (64)  
(PULLED  
BACK)  
LATCH  
(78)  
MAGAZINE  
(74)  
91053, 91054  
92147, & 92185  
Skus  
For technical questions, please call 1-800-444-3353.  
Page 8  
 
Operating the Nailer  
1.  
Attach the Nailer to the air supply at the Quick Connector (87). Start your com-  
pressor, and check the pressure making sure it is set at the recommended 75-125  
PSI and not to go over the maximum PSI.  
2.  
3.  
Rotate the Exhaust Cover (3) so that the exhaust air blast will be directed away  
from the operator.  
To fire, place the nose of the Nailer on the workpiece. The Nailer should not fire if  
the nose is not depressed. Once depressed, gently and briefly squeeze the  
Trigger (48) once. Do not fire repeatedly. Nails could bounce off of one an-  
other, damaging the workpiece or causing PERSONAL INJURY.  
4.  
5.  
6.  
Do not press the Lower Safety (32) of the Nailer against the work surface with  
excessive force. Allow the tool to do the work. Always allow the tool to recoil off  
the workpiece.  
Caution: While working, dirt and sawdust may build up on the Lower Safety (32)  
of the Nailer. This can prevent normal operation. Remove buildup using com-  
pressed air.  
When finished using the Nailer, always disconnect the tool from its compressed  
air supply. Empty the Magazine (74) completely of nails. Attempt to fire the  
Nailer into a piece of scrap wood to ensure it is disconnected and is incapable of  
firing any nails.  
7.  
Make sure to store the Nailer in its Carrying Case in a clean, dry, safe location  
out of reach of children.  
EXHAUST COVER (3)  
QUICK CONNECTOR (87)  
TRIGGER (48)  
LOWER SAFETY (32)  
WORK SURFACE  
REV 11/06  
91053, 91054  
92147, & 92185  
Skus  
For technical questions, please call 1-800-444-3353.  
Page 9  
 
Anytime any maintenance or repairs are done (including clearing jams),  
FIRST:  
1.  
2.  
3.  
Disconnect the Nailer from the air hose.  
Empty the Magazine (74) completely.  
Attempt to fire the Nailer into a piece of scrap wood to ensure that it is discon-  
nected and is incapable of firing any nails.  
Clearing Jams  
1.  
Occasionally a Nail may become jammed in the firing mechanism of the Nailer,  
making the tool inoperative.  
2.  
3.  
To remove a jammed nail, disconnect the Nailer from its compressed air supply.  
Slide the Tab (64) back and empty the Magazine (74) completely of Nails. At-  
tempt to fire the Nailer into a piece of scrap wood to ensure it is disconnected  
and is incapable of firing any nails.  
Use a pair of needle nose pliers (not included) to remove the jammed nail (usu-  
ally from the Upper Safety (28) and/or Lower Safety (32) areas). While holding  
the Tab back, carefully press the Latch. BE CAREFUL. When you press the  
Latch (78), the Tab (64) will spring forward with force. Slowly and cautiously allow  
the tab to slide forward.  
4.  
5.  
6.  
7.  
Reconnect the air supply hose to the tool.  
Press the Lower Safety (32) of the Nailer against a piece of scrap wood.  
Test fire the Nailer several times, checking for proper operation.  
If the Nailer is properly firing, you can continue to use the Nailer. Disconnect the  
air supply to the Nailer, and reload the Nails. Then, reconnect the air supply and  
continue working.  
8.  
When finished working, Disconnect the air supply. Remove the Nails. Then,  
store the Nailer and nails in a location out of children’s reach.  
91053, 91054  
92147, & 92185  
Skus  
For technical questions, please call 1-800-444-3353.  
Page 10  
 
Anytime any maintenance or repairs are done, FIRST:  
1.  
2.  
3.  
Disconnect the Nailer from the air hose.  
Empty the Magazine (74) completely.  
Attempt to fire the Nailer into a piece of scrap wood to ensure that it is discon-  
nected and is incapable of firing any nails.  
Inspection, Maintenance, and Cleaning  
1.  
Inspect the Nailer frequently and lubricate periodically with Pneumatic tool oil,  
then wipe dry. Do not use detergent oil or additives as these lubricants will cause  
accelerated wear to the internal seals.  
2.  
Inspect the air supply filter, if present, before each use and clean or replace as  
necessary. Dirt and water in the air supply filter are major causes of pneumatic  
tool wear. Use a filter/oiler for better performance and longer tool life. The filter  
must have adequate flow capacity for the specific application.  
3.  
4.  
5.  
Clean the Nailer with a clean, wet cloth. Then dry.  
Store the unit in a clean and dry location out of children’s reach.  
All maintenance, service, or repairs not listed in this manual are only to be  
attempted by a qualified technician.  
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.  
NOTE:  
Some parts are listed and shown for illustration purposes only, and are not avail-  
able individually as replacement parts.  
91053, 91054  
92147, & 92185  
Skus  
For technical questions, please call 1-800-444-3353.  
Page 11  
 
Parts List  
Part  
1
Description  
Set Screw  
Shim  
Part  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
Description  
Part  
48  
49  
50  
51  
52  
53  
54  
55  
56  
57  
58  
59  
60  
61  
62  
63  
64  
65  
66  
67  
68  
69  
70  
Description  
Trigger  
Part  
71  
72  
73  
74  
75  
76  
77  
78  
79  
80  
81  
82  
83  
84  
85  
86  
87  
88  
89  
90  
91  
92  
93  
Description  
Internal Hex Bolt  
Support  
O-Ring  
Gasket  
2
O-Ring  
3
Exhaust Cover  
Internal Hex Bolt  
Shim  
Body  
Trigger Plate  
Spring Pin  
Bushing  
4
Safety A  
Magazine  
5
Safety Spring  
Lock Nut  
O-Ring  
Set Screw  
6
Spring Washer  
Flat Washer  
Deflector  
Packing  
Trigger Valve Body  
Pin  
Spring Pin  
Internal Hex Bolt  
Latch  
7
Internal Hex Bolt  
Safety B  
8
O-Ring  
9
Safety Sleeve  
Shelter  
O-Ring  
Latch Bushing  
Latch Spring  
Nail Guide  
Lock Nut  
10  
11  
12  
13  
14  
15  
16  
17  
19  
20  
21  
22  
23  
24  
Gasket  
O-Ring  
Inner Lining  
Spring  
Internal Hex Bolt  
Outer Bumper  
Inner Bumper  
Spring Pin  
Trigger Valve Piston  
O-Ring  
O-Ring  
Compression Spring  
O-Ring  
Tail Hanger  
Internal Hex Bolt  
O-Ring  
O-Ring  
O-Ring  
Driver Guide Bushing  
O-Ring  
Trigger Valve Stem  
Inner Trigger Valve Seat  
Tab  
Head Valve Piston  
Seal  
End Cap  
Driver Guide  
Spring Washer  
Internal Hex Bolt  
Safety Guide  
Spring Pin  
Quick Connector  
Plug  
O-Ring  
Pin  
Driver Unit  
Cylinder  
Roller  
Spring Washer  
Flat Washer  
Spring  
Pusher Spring  
Semicycle Soc.Hd.Screw  
Flat Washer  
Roller Seat  
O-Ring  
Seal  
Pin  
Flat Washer  
Internal Hex Bolt  
Lining Ring  
Spring Pin  
Assembly Diagram  
91053, 91054  
92147, & 92185  
Skus  
For technical questions, please call 1-800-444-3353.  
Page 12  
 

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