Central Pneumatic 38898 User manual

AIR NAILER/STAPLER
2-IN-1 KIT
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit ourWeb site at http://www.harborfreight.com
For technical questions and replacement parts,please call 1-800-444-3353
Model 40115
®
Copyright 2002 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.
®
ASSEMBLY and OPERATING INSTRUCTIONS

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SKU 40115
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. 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 non-conductive clothes and non-skid footwear are recommended when
working. Wear restrictive hair covering to contain long hair.
7. 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.
8. Do not overreach. Keep proper footing and balance at all times.Do not reach over or across
running machines or air hoses.
Specifications
Air Inlet 1/4”- 18 NPT
Recommended Air Pressure 70 - 100 PSI
Magazine Capacity 100
Safety Feature Contact SafetyTrip Mechanism
Nail Size 18 Gauge, 1/4” - 1-1/4” Length
Staple Size 1/4” Crown, 18 Gauge, 1/4” - 1-1/4”
Accessories: Oil Dropper, 2 Wrenches, 1 Coupler Plug , Case
Nails: 5/8” L X 18 Gauge, 500 count; 1” x 18 Gauge, 500 count
Staples: (1/4” Crown) - 1/2” L x 18 Gauge, 500 count ,
1” L x 18 Gauge, 500 count

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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 and always make sure that no
stored up air pressure remains in the Air Nailer/Stapler.
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. Do not carry any tool with your finger on the trigger, whether it
is attached to the compressor 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 any switch does
not turn On and Off 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. Only use accessories intended for use with this
tool. Approved accessories are available from Harbor Freight Tools.
17. 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.
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
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.
21. Use on soft surfaces. Do not use the tool on rock, concrete, metal or other hard surfaces.
You can damage the Air Nailer/Stapler and incur personal injury and property damage.
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.

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Operation
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.
Nailer,
Stapler
1. You will need to prepare a 1/4” air connector (sold separately) to connect to the air inlet on
the Nailer/Stapler First, wrap the 1/4” air connector (not included) with pipe thread seal tape
before connecting to a 3/8” ID Air Source Hose (not included). Connect the Air Source Hose
to the Air Plug (#58).
Note: If you are not using an automatic oiler system, before operation, add a few drops of
Pnuematic Tool Oil to the airline connection. Add a few drops more after each hour of con-
tinual use.
2. Set the air pressure on your compressor to 60 PSI. Do not exceed the maximum air
pressure of 100 PSI.
3. 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.
Warning! Disconnect the Nailer/ Stapler from the compressor whenever loading or
servicing.
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and
other construction 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. )
Warning! After disconnecting the Nailer/Stapler from the compressor, there could still
be enough air pressure to fire the Nailer/Stapler.
1/4”-18 NPT
Unpacking
When unpacking, check to make sure the parts listed 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.
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. Read and understand all
of the instructions provided in the instruction manual of the air compressor being
used.

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Loading Nails or Staples
1. Depress the Click Lever (#49) and pull back on the Tail Cover (#53).
2. Insert the brad nails into the Magazine, letting the pointed end ride on the rail of
Magazine A (#45). If loading staples, fit the crown of the staples so they fit over, and ride on
the rail of the Magazine A (#45).
3. After the nails or staples reach the nose of the tool, close the Tail Cover (#53).
Testing The Contact Safety Trip Mechanism
1. The Stapler/Nailer should not fire if the nose is not depressed against the workpiece. This
tool has a contact safety tip mechanism, which is designed to prevent inadvertant firing. The
tool will only fire if the Safety (#37) is resting on the workpiece prior to pulling the
Trigger (#30).
2. Make sure the tool is disconnected from the power supply.
3. Empty the magazine of nails or staples.
4. Check that the Trigger (#30) and the Safety (#37) on the nose of the tool, move freely,
without sticking.
5. Connect the air supply to the tool at the Air Plug (#58) and set at the recommended 60
PSI, and not over the maximum 100 PSI.
6. Test the tool by depressing the Safety (#37) on the nose of the tool against the workpiece
without pulling the Trigger (#30). The tool must not cycle (fire). If it cycles (fires), stop
immediately and take the tool to an authorized service technician for repair.
7. Hold the tool away, or off of the workpiece. The Safety (#37) or nose of the tool should
return to its original position. Squeeze the Trigger (#30). The tool should not cycle (fire).
If it cycles (fires), stop immediately and take the tool to an authorized service technician.
8. Depress the Safety (#37) on the nose of the tool against the workpiece and squeeze the
Trigger (#30). The tool must cycle (fire). If it fails to cycle (fire), take it to an authorized
service technician.
Operating the Stapler/Nailer
1. Attach the Nailer/Stapler to the air supply at the Air Plug (#58). Start your compressor and
check the pressure making sure it is set at the recommended 60 PSI and not over the
maximum 100 PSI.
2. To fire, place the nose of the Nailer/Stapler on the workpiece. The Nailer/Stapler should
not fire if the nose is not depressed. Once depressed, gently squeeze the Trigger (#30)
once. Do not fire repeatedly; nails or staples could bounce off of one another, causing injury.
Clearing Jams
1. Disconnect tool from air hose.
2. If a nail or staple is jammed in the discharge area, simply remove it with pliers.
3. If a nail or staple is jammed in the magazine, depress the Click Lever (#49) and pull back
on the Tail Cover (#53). Remove the jammed fastener and close the Tail Cover (#53).
Operation (continued)
Warning! After disconnecting the Nailer/Stapler from the compressor, there could still
be enough air pressure to fire the Nailer/Stapler. Aim the Nailer/Stapler into a piece of
scrap, and fire until all of the pressure releases.
Note: The window gauge on Magazine A (#45) lets you know how many nails or staples
remain.

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Note: Have the following problems repaired by an authorized 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 End 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/Stapler insufficiently oiled, broken spring in cylinder cap, exhaust
port in cap is blocked.
Solution: Lubricate as instructed, install new spring, Replace damaged internal parts.
5. Problem: Nailer/Stapler skips driving nail or staple.
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 or staples are jammed in Nailer/Stapler or nose.
Probable Cause: Guide on driver is worn. Wrong size or damaged nails or staples, loose
magazine or nose screws, damaged driver.
Solution: Replace guide, use recommended / undamaged nails or staples, tighten screws,
replace driver.
7. Problem: Nailer/Stapler will not drive down tight.
Probable Cause: Rounded driver blade causing slippage, power loss, slow cycling and
power loss.
Solution: Replace blade, adjust air pressure, check spring under cap for broken coils or
reduce length, check if cap in exhaust port is restricted.
8. Problem: Blade driving nail or staple too deeply.
Probable Cause: Worn bumper or piston spacer.
Solution: Replace either or both parts.
Maintenance
Warning! Always disconnect the tool from the air compressor and then empty the magazine
of nails or staples before attempting to inspect or perform maintenance to the Nailer/Stapler.
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/Stapler skips driving, drives too
deep, or not deep enough, take the Nailer/Stapler to a qualified service technician.
Warning! If you detect any air leaks, power loss, the Nailer/Stapler skips driving, drives too
deep, or not deep enough, take the Nailer/Stapler to an authorized service technician for
repair.
Troubleshooting

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NOTE: Some parts are listed and shown for illustration purposes only and are not available
individually as replacement parts.
PLEASE READTHE FOLLOWING CAREFULLY
THEMANUFACTURERAND/ORDISTRIBUTORHASPROVIDEDTHEPARTSDIAGRAMINTHIS
MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER NOR DISTRIBU-
TORMAKESANYREPRESENTATIONORWARRANTYOFANY KINDTOTHEBUYERTHAT 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/ORDISTRIBUTOR EXPRESSLYSTATESTHATALLREPAIRSANDPARTSREPLACEMENTS
SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSEDTECHNICIANS AND NOT BYTHE
BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER
REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTSTHERETO, OR ARISING
OUTOF HIS OR HER INSTALLATION OFREPLACEMENTPARTSTHERETO.
Parts List
Part No. Description Part No. Description Part No. Description
1 Hex Bolt 21 Seal 41 Magazine B
2 Cylinder Cap Unit 22 Trigger Valve Head 42 Pusher Unit
3 Seal 23 Comper 43 Spring Holder
4 0-ring 24 0-ring 44 Pusher Spring
5 Compression Spring 25 Valve Plunger (Low) 45 Magazine A
6 Gasket (Cylinder Cap) 26 0-ring 46 0-ring
7 0-ring 27 0-ring 47 Tail Hanger
8 Head Piston Valve 28 Valve Body (Low) 48 Spring Pin
9 0-ring 29 0-ring 49 Click Lever
10 0-ring 30 Trigger 50 Spring
11 Collar 31 Retainer Pin 51 Hex Bolt
12 0-ring 32 Guide 52 Cylinder Pin
13 Piston Cover/Driver 33 Seal 53 Tail Cover
14 0-ring 34 Spring Pin 54 Nut
15 Lining Ring 35 Compression Spring 55 Hand Grip
16 Cylinder 36 Nose Plate 56 0-ring
17 0-ring 37 Safety 57 0-ring
18 Bumper 38 Spacer 58 Air Plug
19 Body 39 Work Contact 59 Spring Ring
20 Nozzle 40 Driver Guide

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Assembly Drawing