Central Pneumatic 47868 Users Manual 47868.p65

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®

AIR HAMMER
WITH 9 CHISELS
Model 47868
ASSEMBLY and OPERATING
INSTRUCTIONS

®

3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our Web site at http://www.harborfreight.com
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.
For technical questions and replacement parts, please call 1-800-444-3353

Specifications
Blows per minute
Shank opening
Air Hose Size
Air Inlet
Required Air Pressure
Dimensions
Average Air Consumption
Tool Weight

3000
3/4”
3/8”
1/4”- 18 NPT Female
90 PSI
6-7/8” L x 2” W x 6-1/2” H
12 CFM
3.4 Lbs.

Chisels included: Cut Chisel, Removal Tool, Weld Buster,
Tapered Punch, Ripping Chisel, Bushing Splitter,
Weld Rivet Cutter, Panel Cutter, Long Blade Cutter

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, 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 non-conductive clothes and non-skid footwear
are recommended when working. Wear restrictive hair covering to contain long hair.
Always wear steel toe shoes when operating the Air Chisel.

7.

Use eye and ear protection. Always wear ANSI approved impact safety goggles and
ear protection. Wear a full face shield when breaking up concrete.

SKU 47868

Page 2

8.

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

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
handle 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. Avoid unintentional starting. Be sure the Trigger (#8) is not depressed when
carrying the Air Hammer.
12. Stay alert. Watch what you are doing, use common sense. Do not operate any tool
when you are tired.
13. 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 Air Hammer if the Trigger (#8) does not turn on and off
properly.
14. Guard against electric shock. Prevent body contact with grounded surfaces such as
pipes, radiators, ranges, and refrigerator enclosures.
15. 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.
16. 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.
17. Use proper size and type extension cord. If an extension cord is required for the air
compressor, 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.
18. Maintenance. For your safety, maintenance should be performed regularly by a
qualified technician.
19. Compressed air only. Never use combustible gases as a power source.
Note: More Air Hammer specific warnings in Operation section on page 6.
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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Page 3

Warning: Abrasive blasting with sand containing crystalline silica can cause serious or
fatal respiratory disease. Exposure to crystalline silica may cause silicosis (a serious
lung disease), cancer and death. Exposure to aluminum oxide (a dust generated from
material removing processes) can result in eye, skin and breathing irritation. Always
use a NIOSH (National Institute for Occupational Safety and Health) approved respirator and safety goggles. Avoid skin exposure. Proper ventilation in the work area is
required. Read and understand the 10 recommended measures below to reduce crystalline silica exposures in the workplace and prevent silicosis and silicosis related
deaths.
NIOSH recommends the following measures to reduce crystalline silica exposures in the workplace and prevent silicosis and silicosis-related deaths:
1.

2.
3.
4.
5.

6.
7.
8.
9.
10.

Prohibit silica sand (or other substances containing more than 1% crystalline
cilica)
as an abrasive blasting material and substitute less hazardous materials.
Conduct air monitoring to measure worker exposures.
Use containment methods such as blast-cleaning machines and cabinets to
control the hazard and protect adjacent workers from exposure.
Practice good personal hygiene to avoid unnecessary exposure to silica dust.
Wear washable or disposable protective clothes at the worksite. Shower and
change into clean clothes before leaving the worksite to prevent contamination of
cars, homes and other work areas.
Use respiratory protection when source controls cannot keep silica exposures
below the NIOSH REL.
Provide periodic medical examinations for all workers who may be exposed to
crystalline silica.
Post signs to warn workers about the hazard and to inform them about required
protective equipment.
Provide workers with training that includes information about health effects, work
practices and protective equipment for crystalline silica.
Report all cases of silicosis to State health departments and to OSHA or the Mine
Safety and Health Administration (MSHA).
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:
A) Lead from lead-based paints;
B) Crystalline silica from bricks and cement or other masonry products;
C) Arsenic and chromium from chemically treated lumber.
Your risk from these exposures varies, depending on how often you do this type of work.
To reduce your exposure to these chemicals: work in a well ventilated area, and work
with approved safety equipment, such as those dust masks that are specially designed
to filter out microscopic particles. (California Health & Safety Code 25249.5, et seq. )

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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.
Additional Safety Warnings.
1. Repetitive motions or exposure to vibration may be harmful to your hands and arms.
2. When wearing gloves to operate the Air Hammer, make sure that the gloves do not interfere
with operating the trigger. Test your gloves with the trigger before attaching the unit to an air
source.
3. Never start the tool unless you have a firm grip with both hands and you are positioned at
your workpiece or area.
4. Before using the Air Hammer, know what is directly underneath the work area or workpiece.
The Air Hammer can quickly penetrate material. If working directly on the ground, make sure
you are not directly above shallow cables, lines, or pipes.
5. Keep your limbs and body clear of the Air Hammer. If a chisel breaks off, the tool tends to
surge forward suddenly. Make sure the immediate area is clear of other people or animals.
Spectators must stay at a safe distance.
Warning!! Any spectators in the immediate area will need eye and ear protection.
Beware of flying chips of wood, concrete, metal, or any other material being chiseled.
6. Never point the tool or the air hose (not included) at anyone.
7. Keep your finger away from the Trigger (#8) until you are ready to work.

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.

Operation
1/4”- 18 NPT Female

Air
Hammer

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.
Page 5
SKU 47868

Operation (continued)
1. You will need to prepare a 1/4” air connector (sold separately) to connect to the Air
Inlet (#7). First, wrap the 1/4” air connector (not included) with pipe thread seal tape before
connecting to a Air Source Hose (not included).
2. Attach air hose to the Air Inlet (#7) on the Air Hammer.
Note: If you are not using an automatic oiler system, before operation, add a few drops of
Pneumatic Tool Oil to the airline connection. Add a few drops more after each hour of
continual use.
3. Set the air pressure on your compressor to 90 PSI. Do not exceed the recommended air
pressure of 90 PSI.
4. Check the air connection for leaks.
5. Turn off the compressor and disconnect the air source hose in preparation to load bits into
the Air Hammer.

Examine your chisels before using them. If a chisel is dull or cracked do not use it.
Replace worn or broken chisels with approved replacement chisels from Harbor Freight
Tools
Warning!! Always disconnect from the air source before examining or changing bits.
1. Select the appropriate Chisel Bit. With your thumb, put counterclockwise pressure on the
Spring (#16) and insert the shank of the chisel bit into the Cylinder (#13). Release the
Spring (#16). Holding the Air Hammer firmly, pull the chisel bit hard to make sure it locked
into place.
Note: Before connecting the air supply, make sure you are wearing safety goggles and a full
face mask, ear protection, and steel toe shoes.
Warning!! Any spectators in the immediate area will need eye and ear protection.
Beware of flying chips of wood, concrete, metal, or any other material being chiseled.
2. Connect the air hose to the Air Inlet (#7) and turn on the compressor (not included).
3. Grip the Air Hammer with both hands firmly and put the chisel tip up against the workpiece
you wish to chip.
4. Gently squeeze the Trigger (#8) and move slowly along the workpiece. Do not push down
on the Chisel; let it do the work. If it does not do the intended job to satisfaction, examine your
bit to see if it is worn or dull.
5. When you are finished, turn off the air supply and then hold the Air Chisel in a safe direction
and Squeeze the trigger to bleed off the remaining air. Then, disconnect the air hose.

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Page 6

Parts List
Part No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17

Description
Housing
Stopple
Pin
Bushing
Ball
Spring
Air Inlet
Trigger
Pin
0-ring
Regulator
Pin
Cylinder
Plunger
Valve
Spring
Chisel Tool

Chisels: Cut Chisel, Removal Tool, Weld Buster, Tapered Punch, Ripping Chisel,
Bushing Splitter, Weld Rivet Cutter, Panel Cutter, Long Blade Cutter

Maintenance
Warning!! Always disconnect from the air source before having maintenance performed.
1. After each use, wipe the Air Chisel down with a lint free cloth.
2. Make sure there are no concrete chips, dirt, or debris in the Spring (#16).
3. Before storage, add a small quantity of high quality pneumatic oil in the Air Inlet (#7) and
operate the tool for a couple of seconds to lubricate and protect the internal mechanism.
4. Examine your chisels before using them. If a chisel is dull or cracked do not use it.
Replace worn or broken chisels with approved replacement chisels from Harbor Freight Tools.
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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Page 7

Assembly Drawing

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Page 8



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