Central Pneumatic Central Pneumatic 1/4" Stubby Air Ratchet... User manual

1/4” STUBBY AIR RATCHET
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our Web site at http://www.harborfreight.com
For technical questions and replacement parts, please call 1-800-444-3353
Model 91002
®
®
Copyright©2003byHarborFreightTools®. Allrights reserved. Noportion
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.
OPERATING INSTRUCTIONS

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SKU 91002
Specifications
SaveThis Manual
You will need the manual for the safety warnings and precautions,
operatingandmaintenanceprocedures,partslistanddiagram. Keepyourinvoice
withthis manual. Write theinvoice number on the insideofthe 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 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.
Donotmodifythistoolanddonotuse this tool forapurposefor which it wasnotintended.
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
afullface shield if youareproducing metal filings or woodchips.Wear an ANSI approved
dust mask or respirator when working around metal, wood, and chemical dusts and
mists.
Maximum Torque 20 Ft. Lbs.
Air Consumption 3.5 CFM
Drive Size 1/4” Square
Air Inlet 1/4” - 18 NPT
Maximum Air Pressure 90 PSI
Rotation Speed 280 RPM
Weight 1.2 Lbs.

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SKU 91002
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
periodicallyand,ifdamaged,havethem repairedbyanauthorizedtechnician.Thehandles
must be kept clean, dry, and free from oil and grease at all times.
10. Disconnect air supply.Disconnect air hose when changing accessories or not in use.
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. 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
plugged in 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 the trigger 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
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.
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 air compressor without
heating up. Otherwise, the extension cord could melt and catch fire, or cause electrical
damage to the air compressor. Check your air compressor’s manual for the appropriate
size cord.
19. Maintenance. Foryoursafety,maintenanceshouldbeperformed regularly byaqualified
technician.
20. Compressed air only. Never use combustible gas as a power source.
21. Do not use a “cheater” or any other extension to increase torque on this tool.
Do not exceed the maximum torque rating for this tool.

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SKU 91002
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.
Unpacking
When unpacking, check to make sure the parts listed on page 6 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
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 inlet
on the Ratchet. First, wrap the 1/4” air connector (not included) with pipe thread seal
tape before threading it into the Air Inlet (11). Connect the 3/8” ID Air Source Hose to
the Ratchet.
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.
2. Set the air pressure on your compressor to 90 PSI. Do not exceed the maximum air
pressure of 90 PSI.
3. Check the air connection for leaks. Disconnect the Ratchet from the air source.
Ratchet 1/4” - 18 NPT
WARNING: The brass components of this product contain lead,a chemical known
tothe State of Californiato cause birth defects (or otherreproductiveharm).
(California Health & Safety code 25249.5, et seq.)

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SKU 91002
Operation (continued)
Reverse Button (36)
Trigger (12) 1/4” Anvil (39)
Air Inlet (11)
Warning! Disconnect the Ratchet from the air source when attaching and
removing sockets (not included). There is no safety lock mechanism
on this tool; always disconnect from the air source when not in use.
Refer to the photograph above.
1. Attach a socket (not included) to the 1/4” Anvil.
2. By following the directions on page 4, attach the Ratchet to the air source hose.
3. Gently squeeze theTrigger (12) to activate the Ratchet. Do not force the unit;allow it to
do the work for you. To change direction (loosen vs. tighten), stop the tool, move it
away from the workpiece, then turn the Reverse Button (36).
4. To adjustthetorque,readjust the air pressure. Donotexceedthe maximum air pressure
of 90 PSI.
5. When you are finished working, turn off the compressor and disconnect the air source
hose.
Warning! There may still be air in the Ratchet. Squeeze the Trigger (12) and activate the
Ratchet to expel any air still inside the tool.
6. Remove the socket (not included).
Maintenance
Warning! Always disconnect the Ratchet from the air source hose before attempting any
maintenance.
1. Wipe the unit down with a lint free cloth.
2. Periodically apply a high grade, light machine oil to theTrigger Pivot area (see above).
3. Make sure the 1/4”Anvil (39), the Air Inlet (11), and the Reverse Button (36) are clear
of grease, dirt, and debris.
Trigger Pivot Area

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SKU 91002
NOTE: Some parts are listed and shown for illustration purposes only and are not available
individually as replacement parts.
PLEASE READTHE FOLLOWING CAREFULLY
THEMANUFACTURERAND/OR DISTRIBUTOR HASPROVIDEDTHE PARTSDIAGRAMINTHIS
MANUALASA REFERENCETOOL ONLY. NEITHERTHEMANUFACTURERNORDISTRIBUTOR
MAKES ANY REPRESENTATION ORWARRANTY OF ANY KINDTOTHE BUYERTHAT 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/ORDISTRIBUTOREXPRESSLYSTATESTHATALLREPAIRSANDPARTS REPLACEMENTS
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 PARTS THERETO, OR ARISING
OUTOF HIS ORHER INSTALLATION OF REPLACEMENTPARTSTHERETO.
Parts List
Part No. Description Part No. Description
1 Motor Housing 24 Planet Gear
2 Valve Bushing 25 Planet Pin
3 O-ring 26 Gear Cage
4 Throttle Valve 27 External Gear
5 O-ring 28 ClampNut
6 Spring 29 Ratchet Housing
7 O-ring 30 NeedleBearing
8 Valve Screw 31 Crankshaft
9 Pin 32 Drive Bushing
10 Exhaust Sleeve 33 Ratchet Yoke
11 Air Inlet 34 Washer
12 Trigger 35 Pin
13 Pin 36 Reverse Button
14 Bearing 37 Reverse Spring
15 Rear End Plate 38 Reverse Pin
16 Pin 39 1/4” Anvil
17 Cylinder 40 Ratchet Pawl
18 Rotor 41 Pin
19 Rotor Blade 42 Spring
20 RotorCollar 43 Steel Ball
21 Front End Plate 44 Thrust Washer
22 Roll Pin 45 Retaining Ring
23 Bearing

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SKU 91002
Assembly Drawing
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90 Day Warranty
Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability standards,
and warrants to the original purchaser that this product is free from defects in materials and workmanship for the
period of 90 days from the date of purchase. This warranty does not apply to damage due directly or indirectly,
to misuse, abuse, negligence or accidents, repairs or alterations outside our facilities, criminal activity, improper
installation, normal wear and tear, or to lack of maintenance. We shall in no event be liable for death, injuries
to persons or property, or for incidental, contingent, special or consequential damages arising from the use of
our product. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the
above limitation of exclusion may not apply to you. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with transportation charges
prepaid. Proof of purchase date and an explanation of the complaint must accompany the merchandise.
If our inspection veries the defect, we will either repair or replace the product at our election or we may
elect to refund the purchase price if we cannot readily and quickly provide you with a replacement. We will
return repaired products at our expense, but if we determine there is no defect, or that the defect resulted
from causes not within the scope of our warranty, then you must bear the cost of returning the product.
This warranty gives you specic legal rights and you may also have other rights which vary from state to state.
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • [phone]