Central Pneumatic 92849 User manual

1/4” Air Ratchet Wrench1/4” Air Ratchet Wrench
1/4” Air Ratchet Wrench1/4” Air Ratchet Wrench
1/4” Air Ratchet Wrench
ASSEMBLY AND OPERATING INSTRUCTIONS
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit ourWeb 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 FreightTools.
For technical questions and replacement parts, please call 1-800-444-3353
92849

SKU92849 Page 2
Specifications
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 fol-
lowed 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 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, 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.
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SKU92849 Page 3
6. Dress properly while working. Do not wear loose clothing or jewelry as
theycanbe caughtinmoving parts. Protective,electricallynon-conductive
clothesandnon-skidfootweararerecommendedwhenworking. Wear
restrictivehair 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.WearanANSIapproveddustmaskor 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
reachoveroracrossrunningmachines.
9. Maintain tools with care. Keep tools clean and in good condition for better
andsaferperformance.Followinstructionsforlubricating and changing
accessories.Inspect tool fittings and hosesperiodically 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 power.Disconnect from air pressure source when not in use.
11. Remove adjusting keys and wrenches. Check that keys and adjusting
wrenchesareremovedfromthe tool or machine worksurfacebefore
connecting it.
12. Avoid unintentional starting. Be sure the switch is in the Off position when
not in use and before attaching to pressure source. Do not carry any tool with
your finger on the trigger, whether it is attached 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 when working on electrical equipment.
Preventbodycontact with grounded surfacessuchas pipes, radiators,
ranges,andrefrigerator enclosures.

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16. Replacement parts and accessories. When servicing, use only identical
replacement parts.Use of any other parts will void the warranty.Only use
accessoriesintended for use with this tool. Approvedaccessories are
availablefromHarborFreightTools.
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 air pressure line and fittings. The recommended
air line for this tool is 3/8” delivering no more than 90 psi. Recommended air
inlet size is 1/4” - 18 npt.
19. Maintenance. For your safety, service and maintenance should be performed
regularlybyaqualified technician.
20. You should maintain a proper regulator and moisture trap in your air
line at all times.
21. Use compressed air only. Never use combustible gas as a power source.
Note:Performance of this toolmayvarydependingonvariations in localairpressure.
Warning:The warnings,cautions,andinstructions discussed inthisinstruction
manual cannot cover all possible conditions and situations that may occur.It
mustbe understood bythe operatorthat common senseand cautionare factors
which cannot be built into this product,but must be supplied by the operator.
Air Pressure Supply
We recommend that you use both a filter and an in-line oiler in your air supply
system as illustrated in the diagram below.These components are not included
with this tool, abut are available from Harbor FreightTools.
We recommend that you install a quick-release nipple (not included) into the Inlet
Connector (15). Quick release connectors at all points that a hose attaches to your
compressor set up and your tools make working with air powered tools easier and
moreconvenient.
Air Impact
Wrench

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Operation
1. Install a standard 1/4” Air Connector (not included) to the Air Inlet (15). First
wrapthethreaded portion of the 1/4”air connector with pipe threadseal tape
before threading it into the Air Inlet (15).Tighten securely.
2. Attach a standard quick connector (not included) to your 3/8” i.d. air pressure
source hose. Then attach the air hose to the Air Ratchet Wrench.
NOTE:If you are not using an automatic in-line oiler, add a few drops of pneumatic
oil to the Air Inlet (15) before attaching the air hose. Add a few more drops of oil
aftereveryhourofcontinualuse.
2. Set the air pressure regulator of your air compressor at 90 psi.
WARNING: Donot exceedthe recommended pressure of 90 psi.Damage to your
tool, and possible personal injury may result.
3. Check the air line and its connections for air leaks. Make note of these, and
repairthembefore using this tool.
NOTE: Turnoffyouraircompressoranddisconnecttheairpressurehosebefore
changing sockets or making any adjustments to this tool. Severe injury or property
damagemayotherwiseresult.
WARNING:This tool generates considerable torque when in use.Always hold the
tool with both hands when using, and brace yourself to resist the torque which will
bedeliveredtothework piece.
4. Selecttheappropriatesize 1/4” square driveimpact socket (not included) for
your needs. Push and snap the socket onto the Ratchet Anvil (42). Caution:
Use only impact sockets. Standard sockets are not strong enough.
5. Setthedirectionof the Air Impact Wrenchto“F” (forward) or “R” (reverse).
Please see photo. By rotating the Reverse Button (38) to the right, you are
setting the tool to operate FORWARD.
NOTE:Inthis booklet, “FORWARD” refers to
clockwiserotation, and “REVERSE” refers to
counterclockwiserotation.Alwaysbe aware
ofthedirection of the threading ofthe
fastener you are working on. While most
fasteners install with clockwise rotation,
somethreadsare intentionally the opposite
ofthis standard.

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6. Adjust the Air Regulator (13) to the
desiredtorquesetting.NOTE: The
actualtorquedeliveredateachofthe
severaltorquesettingswilldepend
on the air pressure supplied to the
tool. We suggest that you test the
actual torque by tightening a nut or
bolt on a test piece using each
setting,thenobservingtheresultant
torquebyusinga mechanical torque wrench (notsupplied).
7. If installing a nut or bolt, set it as tight as possible by hand.
8. Place the impact socket (not included) over the fastener.Grip the Air Ratchet
Wrench tightly with both hands, and squeeze the trigger (8). The tool will
operateand tightenthefastener.
9. Whenthefasteneris tightened, release the Trigger (8), andremovethe tool
fromthefastener.
10. If possible, check the actual torque applied to the fastener with a mechanical
torquewrench(notsupplied).Ifadditionaltorqueis required beyond what is
deliveredbyusingairpressure,the fastener may be further tightened using
this tool in the manner of a standard ratchet wrench.
11. Ifremovinga fastener,rotatetheReverseButton(38)counterclockwise,
assuming that the fastener is a standard right-hand thread. Always check to
besure of the thread direction of any fastener before attempting to install or
removeit.If the fastener is a left-handthread,turn the Reverse Button (38)to
therightfor removal.
12. Placean appropriateimpact socket(notincluded)overthefastener.Holding
theAirRatchet Wrench with both hands,squeeze the Trigger (8). Thefastener
shouldcomeoff.
WARNING: If the fastener will not come off, first check to be sure of the
direction of the thread. If you have the thread direction correct and the
fastener will not come off, DO NOT INCREASE THE AIR PRESSURE to the
tool beyond 90 psi.This may damage the tool.You may have to use pen-
etrating oil, heat, or a mechanical wrench to remove the fastener.
13. When you are done using this tool, turn off the air compressor, and disconnect
the air hose. Put the Air Ratchet Wrench away in its proper storage place.
Note: Never over-
tighten the nut or bolt;
damage may result
from over-tightening.

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Parts List
NOTE: Some parts are listed and shown for illustration purposes only and are not
available individually as replacement parts.
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Maintenance
1. Your Air Ratchet Wrench should be kept clean, dry and lightly oiled.
2. When not in use, store your tool in a suitable place where it will not be
exposedto water, corrosivematerials,or undue banging around.
3. If you are not using an in-line oiler, you should inject a few drops of pneumatic
oil into the air inlet of the tool after every hour of continuous use.
4. If your tool loses power, or you notice air leaks, take it to a certified technician
forservice.

SKU92849 Page 8
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 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
STATESTHATALLREPAIRSANDPARTSREPLACEMENTSSHOULDBEUNDERTAKENBY
CERTIFIEDANDLICENSEDTECHNICIANSANDNOTBYTHEBUYER.THEBUYERAS-
SUMESALLRISK ANDLIABILITYARISINGOUTOFHISORHERREPAIRSTOTHEORIGI-
NALPRODUCTORREPLACEMENTPARTSTHERETO,ORARISINGOUTOFHISORHER
INSTALLATIONOFREPLACEMENTPARTSTHERETO.
Assembly Drawing