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Harbor Freight Tools 46240-B User's Manual
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1. CENTRAL PNEUMATIC M N CONTRACTOR SERIES AIR FRAMING NAILER 8 10 GAUGE Model 46240 B ASSEMBLY and OPERATING INSTRUCTIONS 3491 Mission Oaks Blvd Camarillo CA 93011 Visit our Web site at http www harborfreight com TO PREVENT SERIOUS INJURY READ AND UNDERSTAND ALL WARNINGS AND INSTRUCTIONS BEFORE USE Copyright 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 REV 06 04 REV 11 04 Specifications Nail Size 28 0 113 0 131 Diameter 8 10 Gauge 2 3 1 2 long Clipped Head Nails Magazine Capacity o oo 1 Air Inlet Recommended Air Pressure Maximum Air Pressure Safety Feature This Nailer Features an Adjustable Depth Mechanism see page 10 The air pressure setting must not exceed job site regulations restrictions The air pressure setting must not exceed 90 PSI when being used with work pieces that have a thickness of less than 1 3 4 Save This Manual You will need the manual for the safety warnings and precautions assembly instruc tions 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 a
2. cohol 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 compressor 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 SKU 46240 B For technical questions please call 1 800 444 3353 Page 3 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 Compressed air only Never use combustible gas as a power source firing may occur Do not load nails when the air hose is connected to the 21 f Do not load nails with the trigger or safety depressed Unintentional tool Always assume that the tool contains fasteners 22 Disconnect air supply before loading Nailer Before reloading or making any adjustments to the Nailer make sure that the compressed air is d
3. e Disconnect the Nailer when not in use 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 trigger 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 Stay alert Watch what you are doing use common sense Do not operate any tool when you are tired 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 not operate properly 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 serviced 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 Do not operate tool if under the influence of al
4. enance or repairs are done including clearing jams FIRST Disconnect the Nailer from the air hose Empty the Magazine 56 completely Attempt to fire the Nailer into a piece of scrap wood to ensure that it is disconnected and is incapable of firing any brads Always leave the Magazine 56 open during maintenance The Magazine is spring loaded and may cause parts or a nail to fly out of the Nailer 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 pull the Magazine Slide 47 all the way back to the engaged position Using a screwdriver attempt to release the jammed nail by probing either or both of the two openings in the magazine see photo below to release the nail Pull out the jammed nail and the remainder of the nail strip that is still in the magazine Dispose of the remaining nail strip it may be bent or damaged in some other way 4 Reload the magazine with a new nail strip Pull back on the Magazine Slide 47 and with your other hand pull the tab down on the Slide Release 58 and guide the Magazine Slide 47 back into posi tion Probe in these areas with a screwdriver to release jammed nails lf you are unable to clear the nail jam using the method prescribed above the tool should be taken to a q
5. h of the nails being used Vary the air pressure to adjust the driven depth without exceeding hte maximum air pressure of 125 PSI 3 Check the air connection for leaks REV 11 06 SKU 46240 B For technical questions please call 1 800 444 3353 Page 5 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 h Make sure the tool is disconnected from the power supply Completely empty the Magazine 56 of nails The Nailer should not fire if the Safety 28 is not depressed against the workpiece Make sure the Trigger 31 and Safety 28 move freely without sticking a A WO N Connect the air supply to the tool at the Air Plug 41 Set the regulator at the recom mended 60 to 125 PSI 6 Test the tool by depressing the Safety 28 against the workpiece without pulling the Trigger 31 The Tool must not cycle fire If it cycles fires stop immediately and have it repaired by a qualified service technician 7 Hold the tool away or off of the workpiece The Safety 28 of the tool should return to its original position Point the nailer in a safe direction towards the scrap wood and squeeze the Trigger 31 The tool should not cycle fire If the tool fires stop imme diately and have it repaired by a qualified service technician 8 Depress the Safety 28 against the workpiece and squeeze
6. isconnected 23 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 of an angle Fasteners can ricochet causing personal injury Never fire the Nailer into the air or point it toward yourself or another person Always wear ANSI approved safety goggles during use maintenance and reloading 24 Do not fire fasteners too close to the edge of a workpiece They may split the workpiece and fly free causing personal injury 25 Take caution as some woods contain preservatives such as copper chromium arsenate CCA which can be toxic When stapling or nailing these materials extra care should be taken to avoid inhalation and minimize skin contact 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 e Lead from lead based paints e Crystalline silica from bricks and cement or other masonry products e Arsenic and chromium from chemically treated lumber California Health amp Safety Code 25249 5 et seq 26 Stay within air pressure capacity Never operate the Nailer above 125 PSI 27 Hold tool away from head and body During operation the Nailer may kick back causing injury 28 Transport Nailer safel
7. ividually as replacement parts PLEASE READTHE 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 REP RESENTATION 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 RE PAIRS 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 SKU 46240 B For technical questions please call 1 800 444 3353 Page 10 Assembly Diagram NN Li SKU 46240 B For technical questions please call 1 800 444 3353 Page 11
8. nd dry place for future reference Safety Warnings and Precautions WARNING When using tool basic safety precautions should always be Ne 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 Do not expose to rain Keep work area well lit 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 extension cords or air hoses 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 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 purpose for which it was not intended 6 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 Do
9. notoverreach Keep proper footing and balance at all times Do not reach over or across running machines or air hoses 8 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 REV 11 06 SKU 46240 B For technical questions please call 1 800 444 3353 Page 2 10 11 12 13 14 15 16 17 18 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 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 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 hos
10. orate 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 Plug 41 on the Nailer First wrap the 1 4 air connector not included with pipe thread seal tape before connecting to the Air Source Hose not included Connect the Air Source Hose to the Air Plug 41 Note If you are not using an automatic oiler system on your air compressor before operation add a few drops of Pneumatic Tool Oil to the airline connection Remove the air line at the inlet and put 2 or 3 drops of good quality air tool oil into the air fitting each day of use With heavy prolonged use do this at least twice a day 2 Set the air pressure on your compressor to 60 125 PSI Do not exceed the maximum air pressure of 125 PSI Note About Air Consumption CFM Air fastening tools are classified as intermittent use and as such may be operated by compressors of almost any size Small portable units may not be suitable for high volume work but will satisfactorily power the nailer for work at a slower rate The air demand of any fastening tool depends largely upon how quickly the tool is to be used PRESSURE Use the lowest air pressure that will sufficiently drive the fastener into the wood This will depend on the density of the wood and upon the size and lengt
11. rom 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 Replace bumper or pusher spring clean bumper and drive channel check fittings replace or lubricate O rings replace gasket Nailer skips driving nails Rounded driver blade causing slip page power loss slow cycling and power loss 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 The following three maintenance procedures can be done by the user of the tool 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 SKU 46240 B For technical questions please call 1 800 444 3353 Page 9 Parts List Part Description Part Description Park Description 2 1o 1 2 i 4 15 1e i re 1o zo Boy ar aruo oo Hance Grp NOTE Some parts are listed and shown for illustration purposes only and are not available ind
12. the Trigger 31 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 Use the Correct Type of Nails This nailer uses only clipped head nails which are collated at an angle of 28 Round Head nails collated at 22 are not to be used in this tool as they will not feed reliably and may Cause premature wear of the driver assembly Harbor Freight tools offers a variety of compatible fasteners which are usually collated in strips of 25 Nails from other manufacturers are also widely available from home centers and building supply stores Please note that some manufacturers offer fasteners packaged for their brand of air nailers and their nail strips may be longer than the loading slot in this tool REV 11 06 SKU 46240 B For technical questions please call 1 800 444 3353 Page 6 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 Always disconnect the air nailer from the air supply when loading the magazine Grasp the finger grip at the lower left side of the magazine and pull the slide firml
13. ualified service technician for proper servicing SKU 46240 B For technical questions please call 1 800 444 3353 Page 8 Troubleshooting Note Have the following problems repaired by a qualified service technician Problem Probable Cause Solution Air leaking at trigger Damaged O rings in trigger valve Replace O rings Then recheck safety trip housing mechanism Air leaking between Loose screws in housing damaged O Tighten screws or replace O rings or housing and nose rings or bumper bumper Air leaking between housing and cap Loose screws or damaged gasket Tighten screws or replace gasket Runs slowly or has ee aaa Re Lubricate as instructed install new spring or sa y P p replace damaged internal parts cap is blocked Worn or dirty bumper damaged push er spring inadequate air flow worn or dry O ring on piston damaged O ring on trigger valve cap gasket leaking Naile are armed in Guide on driver is worn Wrong size or Replace guide use recommended un naic am damaged nails loose magazine or damaged nails tighten screws replace l nose screws damaged driver driver Replace blade adjust air pressure check spring under cap for broken coils or reduced length check if cap in exhaust port is restricted Driving nail too deeply Worn bumper or piston spacer Replace either or both parts Warning Disconnect the Nailer from the air compressor whenever loading or servic ing After disconnecting the Nailer f
14. y Always disconnect air supply when moving the tool in the workplace Carry the tool by the handle and avoid contact with the trigger 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 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 REV 11 06 SKU 46240 B For technical questions please call 1 800 444 3353 Page 4 Unpacking When unpacking check to make sure the parts listed on page 10 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 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 Set Up 1 4 Air Connector not included Air Hose Line Vaive Nail N Z AIR aler j O fae IL compressor 1 4 18 NPT i y Air Hose N 4 on Reel ee Reguiator Recommended Air Line Components For best service you should incorp
15. y back until it latches See the photo section below Insert a strip of clipped head nails point down into the loading slot on top of the magazine You may load 3 or more strips depending on the size of the nails When ready pull rearward on the finger grip to relieve spring tension and press the magazine latch in to release the slide Hold the slide grip to allow it to close gently Operating the Nailer Attach the Nailer to the air supply at the Air Plug 41 Start your compressor and check the pressure making sure it is set at the recommended 60 125 PSI and not over the maximum 125 PSI After reading the following it is recommended that you get acquainted with this tool by practicing on scrap wood until you are familiar with its characteristics Always Wear Eye Protection When Using the Air Nailer 3 4 Turn the Exhaust Cover 4 to direct the air away from the operator The full sequential trip trigger has a safety device assembled to the nosepiece The nailer will not fire unless the serrated collar is depressed Never attempt to defeat this mechanism and never manually hold it back to shoot nails To place and shoot a single nail grip the nailer without touching the trigger and position the nosepiece on the wood With your free hand press down on the top of the nailer Give the trigger a quick pull and release REV 11 06 SKU 46240 B For technical questions please call 1 800 444 3353 Page 7 Anytime any maint
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