Central Pneumatic 93656 User manual

AIR PIN NAILER
ASSEMBLY and OPERATING
INSTRUCTIONS
Model 93656
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our Web site at http://www.harborfreight.com
Copyright©2005 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
TO PREVENT SERIOUS INJURY,
READ AND UNDERSTAND ALL WARNINGS
AND INSTRUCTIONS BEFORE USE.

SKU 93656 Page 2For technical questions, please call 1-800-444-3353.
Specications
Pin Size 23 Gauge, 1/2” to 1” long, Headless pins
Magazine Capacity 100
Operating PSI 60-100 PSI
Air Inlet Size 1/4” NPT Male
Safety Feature Single Sequential Safety Trip Mechanism
Accessories Two Hex Wrenches, Lubricating Oil,
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 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. Do not expose to rain. Keep work area well lit. Do not use electri-
cally powered tools in the presence of ammable 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 not overreach. Keep proper footing and balance at all times. Do not reach over
or across running machines or air hoses.
8. Stay within air pressure capacity.Never operate the Nailer above 90 PSI.
REV 07i

SKU 93656 Page 3For technical questions, please call 1-800-444-3353.
9. 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 lings 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.
10. Maintain tools with care. Keep tools clean for better and safer performance. Fol-
low 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, discon-
nected, altered or not working properly.
11. 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.
12. 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.
13. 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 nger 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.
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 xtures; and any other condition that may affect proper opera-
tion. Any part that is damaged should be properly repaired or replaced by a qualied
technician. Do not use the tool if the trigger does not operate 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. This product is to be repaired and serviced
only by a qualied technician. When this product is serviced, only identical replace-
ment 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.
18. Do not operate tool if under the inuence of alcohol or drugs. Read warning
labels if taking prescription medicine to determine if your judgement or reexes are
impaired while taking drugs. If there is any doubt, do not operate the tool.
19. 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 with-
out heating up. Otherwise, the extension cord could melt and catch re, or cause

SKU 93656 Page 4For technical questions, please call 1-800-444-3353.
electrical damage to the tool. Check your air compressor’s manual for the appropri-
ate 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 nd a larger amperage circuit to use.
20. Maintenance. The maintenance outlined in the maintenance section should be per-
formed regularly. For your safety, this product should be serviced or repaired regu-
larly only by a qualied technician.
21. Compressed air only. Use clean, dry regulated, compressed air at 90 PSI. Never
use oxygen, carbon dioxide, combustible gases, or any other bottled gas as a power
source for this tool.
22. Do not load pins with the trigger or safety depressed. Unintentional
ring may occur. Do not load nails when the air hose is connected to the
tool. Always assume that the tool contains fasteners.
23. Disconnect air supply before loading Nailer. Before reloading (or making any
adjustments to) the Nailer make sure that the compressed air is disconnected.
24. Fire fasteners into an appropriate work surface only. Do not attempt to re
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 re the Nailer into the air, or point it toward yourself or another person.
Always wear ANSI approved safety goggles during use, maintenance, and reloading.
25. Do not re fasteners too close to the edge of a workpiece. They may split the
workpiece and y free, causing personal injury.
26. 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:
• Lead from lead-based paints
• Crystalline silica from bricks and cement or other masonry products
• Arsenic and chromium from chemically treated lumber
(California Health & Safety Code § 25249.5, et seq.)
27. Transport Nailer safely. 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.

SKU 93656 Page 5For technical questions, please call 1-800-444-3353.
Testing the Single 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. Make sure the tool is disconnected from the power supply.
2. Completely empty the magazine of pins.
3. The Nailer should not re if the nose is not depressed against the workpiece.
4. Check that the Trigger (42) and the Safety (48) move freely, without sticking - see Figure
1, next page.
5. Connect the air supply to the tool at the Air Inlet (22) set at the recommended 60-100
PSI, and not to go over the maximum 100 PSI.
6. Test the tool by depressing the Safety (48) against the workpiece without pulling the
Trigger (42). The tool must not cycle (re). If it cycles (res), stop immediately and
take the tool to an authorized service technician.
7. Hold the tool away or off of the workpiece. The Safety (48) of the tool should return to
its original position. Squeeze the Trigger (42). The tool should not cycle (re). If it
cycles (res), stop immediately and take the tool to an authorized service technician.
8. Depress the Safety (48) against the workpiece and squeeze the Trigger (42). The tool
must cycle (re). Release the trigger and squeeze it again. The tool must cycle (re).
With the Trigger held, carefully lift the nailer and press it against the workpiece again.
The tool must not cycle (re). If it fails to act in the manner described in bold, have it
repaired by a qualied service technician.
Unpacking
When unpacking, check to make sure the parts listed on page 9 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
For best service, you should incorporate an oiler, regulator, and inline lter, as shown in
the diagram below. Hoses, couplers, oilers, regulators, and lters are all available at Harbor
Freight Tools.
Nailer
Note: To connect this tool, we recommend a quick coupler/adapter (not included). Coupler/
adapters are available at Harbor Freight Tools. If an automatic oiler is not used, put
3-5 drops of pneumatic tool oil in the Air Inlet (22) before each use.

SKU 93656 Page 6For technical questions, please call 1-800-444-3353.
Operating the Nailer
1. Attach the Nailer to the air supply at the Air Inlet (22). Start your compressor and check
the pressure making sure it is set at the recommended 90 PSI and not to go over the
maximum 90 PSI.
2. To re, place the nose of the Nailer on the workpiece. The Nailer should not re if the
nose is not depressed. Once depressed, gently and briey squeeze the Trigger (42)
once. Do not re repeatedly. Pins could bounce off of one another, damaging the work
piece or causing PERSONAL INJURY.
Loading Pin 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. Press the Magazine Latch (23) up and slide the Magazine (57) back.
2. If you are using a different pin length than previously:
a. Remove all pins from inside the nailer.
b. Slide the Pin Length Selector (64) to the appropriate length setting. See Figure 1.
3. Holding the nailer upside-down, insert the pin nails into the slot noted above.
4. Close the Magazine (57) making sure the Magazine Latch (23) clicks shut.
See Figure 1.
Operation (continued)
FIGURE 1
Air Inlet
(22)
Magazine Safety
(48)
Trigger (42)
Magazine
Latch
Insert
Pins Here
Pin Length
Selector (64)

SKU 93656 Page 7For technical questions, please call 1-800-444-3353.
Anytime any maintenance or repairs are done (including clearing jams),
FIRST:
1. Disconnect the Nailer from the air hose.
2. Empty the Magazine (57) completely.
3. Attempt to re the Nailer into a piece of scrap wood to ensure that it is disconnected
and is incapable of ring any pins.
4. Always leave the Magazine (57) open during maintenance. The Magazine is
Clearing Jams
1. Disconnect tool from air hose, empty the
Magazine (57) of pins, release any built-up air
pressure, and leave the magazine open, as
explained above.
2. Hold the Nailer pointed away from you and any
other people or fragile objects. Remove the
Short Cap Screw (47) and the two longer Cap
Screws (46) - see Figure 2. Remove the Safety
Cover (45) and Safety Spring (49) and set them
aside.
3. Remove the Safety Guide (50) carefully to avoid
bending the Safety (48) - see Figure 3.
4. Remove the jammed pin. Pliers may be
necessary to remove a stuck pin.
5. Inspect the Driver (11) for bends or breakage -
see location in Figure 4. If damaged, do not use
until Nailer repaired by a qualied technician.
6. Lightly oil the Driver (11). Replace the Safety
Guide (50) underneath the Safety (48). The
Safety (48) should t perfectly into the groove
in the Safety Guide (50). See Figure 3.
7. Replace the Safety Spring (49) onto the Safety
(48) as in Figure 3. Carefully place the Safety
Cover (45) over the Safety and Spring and
attach using the Cap Screws (46) and the Short
Cap Screw (47) - see Figure 2. Make sure that
the Short Cap Screw (47) goes in the correct
position. Make sure that the Safety (48) is spring
loaded and moves freely, without sticking.
8. Reload and reconnect Nailer to the air hose.
9. Press the Safety (48) of the Nailer against an
appropriate piece of scrap wood.
10. Test re the Nailer several times, checking for
proper operation.
11. Disconnect the Nailer, remove the pins and store
it in a location out of children’s reach.
FIGURE 2
Short Cap
Screw (47)
Cap
Screws (46)
Safety
Cover (45)
FIGURE 3
Safety (48)
Safety
Spring (49)
Safety
Guide (50)
Driver
Guide (54)
FIGURE 4
Safety (48)
Driver (11)
Driver
Guide (54)

SKU 93656 Page 8For technical questions, please call 1-800-444-3353.
Anytime any maintenance or repairs are done, FIRST:
1. Disconnect the Nailer from the air hose.
2. Empty the Magazine (57) completely.
3. Attempt to re the Nailer into a piece of scrap wood to ensure that it is disconnected
and is incapable of ring any pins.
4. Always leave the Magazine (57) open during maintenance. The Magazine is
spring-loaded and may cause parts or a nail to y out of the Nailer.
Troubleshooting Guide
Stop using the Brad Nailer immediately if any of the following problems occur.
Repairs and part replacements must be done only by a qualied technician.
All procedures in bold on this chart are to be attempted only be a qualied technician.
Problem Likely Cause Solution
Air leaking at Trigger area. O-Rings in Trigger Valve hous-
ing are damaged.
Replace O-Rings and check safety
trip operation.
Air leaking between Housing
and Nose.
Loose screws in Housing.
Damaged O-Rings/Bumper (12).
Tighten screws.
Replace O-Rings or Bumper (12).
Air leaking at Trigger Valve
Stem.
O-Rings or Seals are damaged. Replace O-Rings or Seals.
Air leaking between Housing
and Cap.
Loose Cylinder Cap (1). Tighten Cylinder Cap (1).
Runs slowly or has power
loss.
Insufcient oil.
Exhaust (18) is blocked.
Lubricate as instructed.
Replace damaged parts.
Nailer skips a nail.
Worn Bumper (12) or damaged
Pusher Spring.
Dirt in Driver Guide (54).
Inadequate airow to Nailer.
Worn or dry O-Ring on Piston.
Damaged O-Ring on Trigger
Valve.
Replace Bumper (12) or Pusher
Spring.
Clean Channels in Driver Guide (54).
Check hose and compressor ttings.
Replace or lubricate O-Rings.
Replace O-Rings.
Nails are jammed.
Guide on driver is worn.
Nails are wrong size or damaged.
Magazine or Nose screws are
loose.
Driver (11) is damaged.
Replace Guide.
Use correct, undamaged nails.
Tighten screws.
Replace Driver (11).
Nailer will not drive down tight.
Rounded Driver (11) slipping off
nail crown.
Lack of air pressure.
Slow cycling and loss of power.
Replace Driver (11).
Supply correct pressure (55-95 PSI).
Make sure Exhaust (18) is clear.
Blade driving nail too deeply. Worn Bumper (12) and/or Piston
Spacer.
Replace either or both parts.
All procedures in bold on this chart are to be attempted only be a qualied technician.

SKU 93656 Page 9For technical questions, please call 1-800-444-3353.
NOTE: Some parts are listed and shown for illustration purposes only and are not available
individually as replacement parts.
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM AND
TROUBLESHOOTING GUIDE 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.
Parts List
Part Description
1 Cylinder Cap
2 O-ring
3 Piston Valve
4 Collar
5 O-ring
6 Lining Ring
7 O-ring
8 O-ring
9 Cylinder
10 O-ring
11 Driver
12 Bumper
13 Nozzle Washer
14 Body
15 Cap Screw
16 Nut
17 Mounting Bracket
18 Exhaust Deector
19 E-clip
20 Filter
21 End Cap
22 Air Inlet
23 Magazine Latch
Part Description
24 Latch Spring
25 Retaining Pin
26 Handle
27 O-ring
28 O-ring
29 O-ring
30 Lower Trigger Valve
31 Spring
32 Seal
33 O-ring
34 O-ring
35 Trigger Valve Piston
36 Seal
37 O-ring
38 Upper Trigger Valve
39 O-ring
40 Trigger Plunger
41 Trigger Bracket
42 Trigger
43 Cap Screw
44 Pin
45 Safety Cover
46 Cap Screw
Part Description
47 Short Cap Screw
48 Safety
49 Safety Spring
50 Safety Guide
51 Cap Screw
52 Cap Screw
53 Spacer
54 Driver Guide
55 Cap Screw
56 Lock Washer
57 Lower Magazine
58 Roll Pin
59 Rear Magazine Cover
60 Pusher
61 Spring Holder
62 Pusher Spring
63 Length Scale
64 Pin Length Selector
65 Upper Right Magazine
66 Nail Guide
67 Nail Guide Bar
68 Pin
69 Upper Left Magazine

SKU 93656 Page 10For technical questions, please call 1-800-444-3353.
Assembly Drawing
Maintenance
Warning! Always disconnect the tool from the air compressor and then empty the magazine
of pins 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 ammable solvents to clean the tool.
3. Inspect your air compressor according to manufacturer’s instructions.