Harbor Freight Tools 31317 Assembly And Operating Instructions Manual

AIR NAILERAIR NAILER

®

AIR NAILER

AIR NAILERAIR NAILER

3/4” - 2”3/4” - 2”

3/4” - 2”

3/4” - 2”3/4” - 2”

31317

ASSEMBLY and OPERATING

INSTRUCTIONS

®

3491 Mission Oaks Blvd., Camarillo, CA 93011

Visit our Web site at http://www.harborfreight.com

Copyright © 2000 by Harbor Freight Tools®. All rights reser ved. 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

REV 12/03

Specifications

Brads 3/4” - 2”
PSI 60 - 100
Load Capacity 100 - 16 Gauge Nails
Air Inlet 1/4” NPT
Body Cast Aluminum

Note: Air Nailer features 360 degree exhaust, new feed window and jaw door.

Save This Manual

You will need the manual for the safety warnings and precautions, assembly instructions,
operating and maintenance procedures, parts list and diagram. Keep your invoice with this
manual. Write the invoice number on the inside of the front cover. Keep the manual and
invoice in a safe and dry place for future reference.

Safety Warnings and Precautions

WARNING: When using tool, basic safety precautions should always be followed to
reduce the risk of personal injury and damage to equipment.

Read all instructions before using this tool!

1. Keep work area clean. Cluttered areas invite injuries.

2. Observe work area conditions. Do not use machines or power tools in damp or wet
locations. Don’t expose to rain. Keep work area well lighted. Do not use electrically
powered tools in the presence of flammable gases or liquids.

3. Keep children away. Children must never be allowed in the work area. Do not let
them handle machines, tools, or extension cords.

4. 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.

5. 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.

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. Do not modify this tool and do not use this tool for a purpose for which
it was not intended.

7. Dress properly. Do not wear loose clothing or jewelry as they can be caught in
moving parts. Protective, electrically non-conductive clothes and non-skid footwear
are recommended when working. Wear restrictive hair covering to contain long hair.

8. Use eye and ear protection. Always wear ANSI approved impact safety goggles.
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.

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REV 12/03

9. Do not overreach. Keep proper footing and balance at all times. Do not reach over
or across running machines.

10. Maintain tools with care. Keep tools sharp and clean for better and safer
performance. Follow instructions for lubricating and changing accessories. Inspect tool
cords 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.

11. Disconnect Hose. Disconnect the hose and unplug compressor when not in use.

12. Remove adjusting keys and wrenches. Check that keys and adjusting wrenches
are removed from the tool or machine work surface before plugging it in.

13. Avoid unintentional starting. Be sure the switch is in the Off position 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.

14. Stay alert. Watch what you are doing, use common sense. Do not operate any tool
when you are tired.

15. 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 proper ly repaired or replaced by a qualified
technician. Do not use the tool if any switch does not turn On and Off properly.

16. Guard against electric shock. Prevent body contact with grounded surfaces such as
pipes, radiators, ranges, and refrigerator enclosures.

17. 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.

18. 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.

19. Maintenance. For your safety, maintenance should be performed regularly by a
qualified technician.

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20. Make Sure All Connections Are Secure . Check all lines and connections for air leaks.

21. Use Correct Fasteners. Only use the size brads that meet the tool’s specifications.

22. Use an In-line Air Filter. This will keep dirt from clogging the tool. See Figure 1.

23. Never Exceed Highest Recommended Pressure.

24. Never Point Tool At Anything Other Than Stock. Never point the Air Nailer at people

or animals.

25. If Any T r ouble Occurs, Immediatel y Shut Down Air Compressor . Release all air from

the lines before attempting to troubleshoot.

26. Always Attach A Free Flow Connector to the Nailer. If not used, the tool can remain

charged and still be able to drive nails, even after the air has been disconnected.

27. Air Supply Sources. Do not use an air source which exceeds the tool’s rating. This tool

is rated 60 - 100 PSI. When through using, always drain the tank on your air compressor.

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.

Caution: To promote trouble free operation, make sure the air line is equipped with an Air

Filter Regulator. It is recommended that a three unit assembly is used which consists of an
oiler, pressure regulator and a moisture trap.

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Unpacking

When unpacking, check to make sure the parts listed on the Parts List on page 7 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

Warning: Before initiating operating procedures, disconnect the Air Nailer from the
air supply (compressor).

1. Before operation, put 3 to 5 drops of air tool lubricating oil into the lubrication opening,

and then close the lubrication opening.

2. Open magazine by pulling back the Nail Pushing Plate (#5061) until latch is engaged.

3. Hold the Nailer with the Nozzle (#5064B) pointed in a safe direction and the magazine

tilted down. Insert a clip of brads.

4. Close the magazine by pulling back on the Nail Pushing Plate (#5061) to disengage

from the latch. Guide the Nail Pushing Plate (#5061) forward slowly, pushing the clip of
nails into the magazine. Do not allow the Nail Pushing Plate (#5061) to snap forward
which could cause a jam.

5. Connect the Air Nailer to the air compressor.

6. Press the head of the Nailer on the stock making sure it is straight (not at an angle).

7. Pull the trigger to begin nailing.

Maintenance

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.

1. When not in use, empty the magazine of brads.

2. After each use, disconnect from air line and inspect the nozzle to make sure a brad is

not jammed.

3. Wipe down the unit with a dry cloth, removing any lubricating oil or dirt. Do not use

solvents or cleaners.

4. Seal Care. All internal parts should be clean and well lubricated. Use an O-ring lubri-

cant to coat each O-ring before replacement and periodically for smoother operation. Apply
small drops of oil onto all moving parts and pivots. Before use, apply a few drops of oil to
the air line fitting before testing.

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REV 12/03

Troubleshooting

Warning: Disconnect tool fr om air supply bef ore T roubleshooting! Make sure all brads
are removed from the tool and make sure no pressure remains in the tool.

1. Air leakage between frame and cap. Check tightness of screws. Tighten if necesar y.

Check condition of gasket. Replace if necessary.

2. Air leakage between frame and nose. Check Screws for tightness. Remove the nose

and inspect o-rings for wear and lubrication. The tip or bumper should be inspected and
replaced if worn or cracked.

3. Slow cycling or loss of power.

a. Check that the tool is properly lubricated. If necessary, re-lubricate and test again.
b. Remove the cap on top of the cylinder and check the spring for broken coils or reduced

length. Replace if necessary.
c. Check the head valve o-rings and the cap walls for proper lubrication. Lubricate or replace
if necessary.
d. Check that the exhaust port of the cap is not blocked or restricted in any way.

4. Skipping Nails - The tool cycles without driving a nail.

a. Worn bumper. Check that the bumper is not worn or damaged. Replace if necessary.
b. Dir t or debris in the dr ive channel. This will cause drag on the driver, preventing it from

returning to position. Clean drive channel.
c. Damaged Pusher Spring. Check for debris or damage which might not allow nails or
Pusher Spring from sliding freely in the magazine.

d. Worn o-ring on the piston. Check that o-rings or not cracked and are well lubricated.
e. Cut o-ring on the trigger valve sleeve. Replace if necessar y.
f. Leaking cap gasket. Re-seat and tighten.

5. W ater Dripping.

a. Air Valve may be clogged. Water dripping means air supply is full of moisture.

PLEASE READ THE FOLLOWING CAREFULLY

THE MANUF ACTURER AND/OR DISTRIBUT OR HAS PRO VIDED THE PARTS DIAGRAM IN THIS
MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER NOR DISTRIBU­TOR MAKES ANY REPRESENTA TION OR WARRANTY OF ANY KIND T O THE BUYER THAT HE
OR SHE IS QUALIFIED TO MAKE ANY REP AIRS T O THE PRODUCT OR THA T HE OR SHE IS
QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTURER
AND/OR DISTRIBUTOR EXPRESSLY STATES THA T ALL REP AIRS AND PARTS REPLACEMENTS
SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS AND NO T BY THE
BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER
REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT P AR TS 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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REV 12/03

Assembly Drawing

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REV 12/03