Harbor Freight Tools Nail Gun 54461 User Manual

18 GUAGE, 5/8”-2”  
AIR BRAD NAILER  
Model 54461  
ASSEMBLY and OPERATING  
INSTRUCTIONS  
®
3491 Mission Oaks Blvd., Camarillo, CA 93011  
Copyright c 2003 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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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  
handles must be kept clean, dry, and free from oil and grease at all times.  
10. Disconnect air supply. Disconnect air hose when not in use.  
11. Remove adjusting keys and wrenches. Check that keys and adjusting wrenches  
are removed from the tool or machine work surface before plugging it in.  
12. Avoid unintentional starting. Be sure your finger is off the trigger when not in use  
and before plugging in. Do not carry any tool with your finger on the trigger, whether it  
is plugged in 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 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 the trigger does function properly.  
15. Guard against electric shock. Prevent body contact with grounded surfaces such as  
pipes, radiators, ranges, and refrigerator enclosures.  
16. Replacement parts and accessories. When servicing, use only identical  
replacement parts. Use of any other parts will void the warranty.  
17. 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 Nailer.  
18. 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 tool 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.  
19. Maintenance. For your safety, maintenance should be performed regularly by a  
qualified technician.  
20. Compressed air only. Never use combustible gases as a power source.  
Note: Performance of the air compressor (if powered by line voltage) may vary depend-  
ing on variations in local line voltage. Extension cord usage may also affect tool per-  
formance.  
Warning: The warnings, cautions, and instructions discussed in this instruction 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.  
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WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construc-  
tion activites, 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 cilica from bricks and cement or other masonry products  
Arsenic and chromium from chemically treated lumber  
(California Health & Safety Code 25249.5, et seq. )  
Unpacking  
When unpacking, check to make sure the parts listed on page 8 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  
Operation  
1/4” -18 NPT  
Nailer  
For best service you should incorporate an oiler, regulator, and inline filter, as shown in the  
diagram above. Hoses, couplers, oilers, regulators, and filters are all available at Harbor  
Freight Tools.  
1. You will need to prepare a 1/4” air connector (sold separately) to connect to the  
Air Inlet (33) (See FIGURE 1) on the Nailer. First, wrap the 1/4” air connector (not included)  
with pipe thread seal tape before connecting to the Air Inlet (33). Connect the Air Source  
Hose to the Air Connector (not included).  
Note: If you are not using an automatic oiler system on your air compressor, before opera-  
tion, add a few drops of Pneumatic Tool Oil to the airline connection. Add a few drops more  
after each hour of continual use.  
2. Set the air pressure on your compressor to between 60 and 115 PSI. Do not exceed the  
maximum air pressure of 130 PSI.  
3. Check the air connection for leaks.  
Warning! Disconnect the Nailer from the air compressor whenever loading or  
servicing. After disconnecting the Nailer from the air compressor, there could still  
be enough air pressure to fire the Nailer. Always fire the trigger repeatedly to  
make sure all of the air is expended.  
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FIGURE 1  
1/4” Air Inlet (33)  
Magazine  
Latch (39)  
Trigger (31)  
Heel Cushion (79)  
Seqential Trip Safety  
Warning! This Nailer has a Sequential Trip safety mechanism. With the trigger pulled,  
the unit will fire each time the nose of the Nailer contacts a surface. This Nailer is not  
suited for single shot work. Vibration and bouncing and delayed finger pressure will  
commonly result in the unit double firing.  
Testing the Sequential Trip Safety Mechanism (Always test while using scrap material.)  
1. The Nailer should not fire if the nose is not depressed against the workpiece.  
2. Make sure the tool is disconnected from the power supply.  
3. Empty the magazine of nails.  
4. Check that the Trigger (31) and the nose of the tool, moves freely, without sticking.  
5. Connect the air supply to the tool at the Air Inlet (33) and set at the recommended 60-115  
PSI, and not over the maximum 130 PSI.  
6. Test the tool by depressing the nose of the tool against the workpiece without pulling the  
Trigger (31). The tool must not cycle (fire). If it cycles (fires), stop immediately and take the  
tool to an qualified service technician for repair.  
7. Hold the tool away or off of the workpiece. The nose of the tool should return to its original  
position. Squeeze the Trigger (31). The tool should not cycle (fire). If it cycles (fires), stop  
immediately and take the tool to an authorized service technician.  
8. Depress the nose of the tool against the workpiece and squeeze the Trigger (31). The tool  
must cycle (fire). If it fails to cycle (fire), take it to an authorized service technician.  
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Loading Nails  
Always disconnect the Brad Nailer from the air source before loading nails.  
1. While pushing on the Magazine Latch (39) with your right thumb, push on the Heel  
Cushion (79) with your left thumb, and pull back to open the magazine. See FIGURE 1.  
2. Insert the brads.  
3. Snap the Heel Cushion (79) back into position.  
Operating the Nailer  
1. Attach the Nailer to the air supply at the Air Connector (not included) which is already  
connected to the Air Inlet (33). See FIGURE 1. Start your compressor and make sure it is set  
to between the recommended 60-115 PSI and not over the maximum 130 PSI.  
2. 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 squeeze the Trigger (31) once. Do not fire repeat-  
edly; nails could bounce off of one another causing injury.  
3. To adjust the driven depth of the brads, use the pressure regulator on the compressor.  
4. When finished with nailing, disconnect the tool from the air hose.  
Clearing Jams  
1. Disconnect tool from air hose. Always fire the trigger repeatedly to make sure all of the air  
is expended from the Nailer.  
2. If a nail is jammed in the discharge area, simply remove it with pliers.  
3. If a nail is jammed in the magazine, while pushing on the Magazine Latch (39) with your  
right thumb, push on the Heel Cushion (79) with your left thumb, and pull back to open the  
magazine. Remove all of the Brads. Snap the Heel Cushion (79) back into place. See  
FIGURE 1.  
Warning! After disconnecting the Nailer from the compressor, there could still be enough  
air pressure to fire the Nailer. Always fire the trigger repeatedly to make sure all the air  
is expended.  
Maintenance  
Warning! Always disconnect the tool from the air compressor and then empty the magazine  
of nails before attempting to inspect or perform maintenance to the Nailer.  
1. Inspect all of the nuts and screws and make sure they are securely fastened.  
2. Periodically lubricate the driving mechanism and magazine with a light oil. Wipe down with  
a clean cloth. Never use gasoline or flammable solvents to clean the tool.  
3. Inspect your air compressor according to manufacturer’s instructions.  
Warning! If you detect any air leaks, power loss, the Nailer skips driving, drives too deep, or  
not deep enough, take the Nailer to a qualified service technician.  
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Troubleshooting  
Warning! If you detect any air leaks, power loss, the Nailer skips driving, drives too deep, or  
not deep enough, take the Nailer to a qualified service technician for repair.  
Note: Have the following problems repaired by a qualified service technician.  
1. Problem: Air leaking at trigger valve area.  
Probable Cause: Damaged 0-rings in trigger valve housing.  
Solution: Replace 0-rings. Then re-check contact safety trip mechanism.  
2. Problem: Air leaking between housing and nose.  
Probable Cause: Loose screws in housing, damaged 0-rings or bumper.  
Solution: Tighten screws or replace 0-rings or bumper.  
3. Problem: Air leaking between housing and cap.  
Probable Cause: Loose screws or damaged gasket.  
Solution: Tighten Screws or replace gasket.  
4. Problem: Runs slowly or has power loss.  
Probable Cause: Nailer insufficiently oiled, broken spring in cylinder cap, exhaust part in cap  
is blocked.  
Solution: Lubricate moving parts (Magazine, Nose, and Trigger assemblies), install new  
spring, Replace damaged internal parts.  
5. Problem: Nailer skips driving nails.  
Probable Cause: Worn or dirty bumper, damaged pusher spring, inadequate air flow, worn  
or dry 0-ring on piston, damaged 0-ring on trigger valve, cap gasket leaking.  
Solution: Replace bumper or pusher spring, clean bumper and drive channel, check fittings,  
replace or lubricate 0-rings, replace gasket.  
6. Problem: Nails are jammed in Nailer nose.  
Probable Cause: Guide on driver is worn. Wrong size or damaged Brads, loose magazine  
or nose screws, damaged driver.  
Solution: Replace guide, use recommended, undamaged Brads, tighten screws, replace  
driver.  
7. Problem: Nail will not drive down tight.  
Probable Cause: Insufficient air pressure, rounded driver blade causing slippage, power  
loss, slow cycling and power loss.  
Solution: Adjust air pressure, replace blade, check spring under cap for broken coils or  
reduce length, check if cap in exhaust port is restricted.  
8. Problem: Driving Brad too deeply.  
Probable Cause: Worn bumper or piston spacer.  
Solution: Replace either or both parts.  
Warning! Disconnect the Nailer from the air compressor whenever loading or  
servicing. After disconnecting the Nailer from the air compressor, there could still be  
enough air pressure to fire the Nailer. Always fire the trigger repeatedly to make sure  
all of the air is expended.  
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Parts List  
Part No. Description  
1
2*  
Part No. Description  
Part No. Description  
Cylinder Cap Cover  
Screw  
37  
38  
Exhaust Cover  
Muffler  
71*  
72*  
73*  
74*  
75*  
76*  
77*  
78*  
79  
80*  
81*  
82*  
83*  
84*  
85  
Spring Holder  
Screw  
Magazine Support  
Nylok Screw  
Magazine Stop  
Fixed Rail  
3*  
4*  
5*  
Exhaust Deflector  
Air Seal  
Spring  
39  
40  
41  
42  
Magazine Latch  
Latch Spring  
Latch Pin  
Pin Retaner  
Safety Pin  
6*  
7*  
8*  
Cylinder Cap  
0-ring  
0-ring  
43  
Wear Strip  
44*  
45*  
46*  
47*  
48*  
49*  
50*  
51*  
52*  
53*  
54*  
55*  
56*  
57*  
58*  
59*  
60*  
61*  
62*  
63*  
64*  
65*  
66*  
67*  
68*  
69*  
70*  
Safety Guide Plate  
Safety Pin  
Safety Spring  
E-ring  
Safety Adjs. Wheel  
Upper Safety Element  
0-ring  
Safety Contact Pin  
0-ring  
Main Piston  
Piston Drv. Coupling  
Inner Spring Pin  
Outer Spring Pin  
Driver Blade  
Screw  
Feeder Spring  
Mag. Heel Cushion  
Screw  
Latch Plate  
Moving Rail  
Spacer  
9*  
0-ring  
Firing Valve Piston  
0-ring  
Sleeve Retainer  
Cylinder Sleeve  
Piston Stop  
0-ring  
Trigger Pin  
Main Body  
Driver Bushing  
Handle  
0-ring  
0-ring  
Rubber Remote Hsng.  
Conical Spring  
0-ring  
Remote Core  
Remote Housing  
0-ring  
Extension Spring Set  
Trigger Guide  
Pin Bushing  
Trigger  
10*  
11*  
12  
13*  
14  
15  
16  
17  
18  
19  
20  
21*  
22*  
23*  
24*  
25*  
26*  
27*  
28*  
29*  
30*  
31*  
32*  
33  
34  
35  
36  
Stopper  
Grip  
86  
Warning Decal  
Screw  
87*  
88*  
89*  
90*  
91*  
92*  
93*  
94*  
95*  
96*  
97*  
98*  
99*  
100*  
101  
Logo Plate  
Cylinder Cap Assy.  
Head Vlv. Piston Set  
Cylinder Set  
Trigger Valve Set  
Trigger Set  
Release Catch Assy.  
Piston Set  
Screw  
Set Screw  
Screw  
Screw  
Washer  
Safety Cover  
Lower Safety Element  
Front Plate  
Spring Pin  
Screw  
Fixed Backplate  
Screw  
Screw  
Washer  
Moving Backplate  
Feeder Shoe  
Cylinder Cap Assy.  
Duster  
Pin  
B0300-070 Cylinder Set  
B11001221 Magazine Set  
Air Inlet 1/4”  
Pin Retainer  
Screw  
Serial Label  
* The parts with asterisks cannot be purchased separately. They may be purchased as part of a set as denoted  
below:  
Set # B0300-070 includes 2,3,4,5,87,89,6,100,7,8,9,10,90,11/ Set #91 includes 9,11,13/ Set #92 includes  
21,22,23,24,25,26,27 / Set #93 includes 28,29,30,31,32 / Set #94 includes 44,45,46,47,48,49,50,51 / Set #95  
includes 52,53,54,55,56,57/ Set #96 includes 58,59/ Set #97 includes 66,68/ Set #98 includes 67,68/ Set#99  
includes 72,59/  
Set B11001-221 includes 73,65,64,63,62,61,60,97,66,68,98,63,64,69,84,70,71,74,75,76,77,78,80,81,82  
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.  
NOTE: Some parts are listed and shown for illustration purposes only and are not available  
individually as replacement parts.  
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Assembly Drawing  
100  
B0300-070  
1
90  
91  
11  
89  
87  
12  
4
3
2
5
7
9
11 10  
6
8
14  
13  
9
93  
30  
92  
16  
18  
36  
17  
24  
21 20  
19  
31  
23 22  
24  
32  
28  
25  
27  
15  
29  
26  
97  
34  
66  
96  
58  
59  
42  
68  
43  
33  
101  
94  
67  
60  
51  
49 48  
46  
45 44  
50  
47  
68  
61  
98  
41  
38  
62  
63  
63  
37  
64  
95  
54  
64  
85  
83  
52  
57 56  
53  
55  
69  
65  
35  
84  
70  
40  
71  
39  
86  
99  
59  
73  
72  
B1100-1221  
81  
82  
79  
80  
75  
74  
78 77 76  
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