Central Pneumatic 90115 User manual

AIR JITTERBUG
ORBITAL SANDER
ASSEMBLY and OPERATING
INSTRUCTIONS
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 90115
®
®
Copyright c 2003 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.

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SKU 90115
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 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.
7. Use eye and ear protection. Always wear ANSI approved impact safety goggles.
Wear a full face shield if you are producing sawdust. Wear an ANSI approved dust
mask or respirator when working around wood, and chemical dusts and mists.
Orbits Per Minute 9400 OPM
Air Inlet 1/4” - 18 NPT
Recommended Air Pressure 90 -100 PSI (maximum)
Air Consumption 8.5 CFM @ 90 PSI
Pad Size 6-1/2” x 3-1/2”
Sandpaper Size 8-1/2” x 3-1/2”
Tool Weight 4.1 Lbs.
Sandpaper Available at Harbor Freight Tools

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SKU 90115
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
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.
11. Do not force tool. It will do a better job more safely at the rate at which it is intended.
12. Avoid unintentional starting. Be sure the Lever is in the Off position (up) when not in
use and before plugging in. Do not carry any tool with your hand on the lever.
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 is 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 Sander.
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. INDUSTRIAL APPLICATIONS MUST FOLLOW OSHA REQUIREMENT.
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 perfor-
mance.

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SKU 90115
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.
1. You will need to prepare a 1/4” air connector (sold separately) to connect to the air inlet on
the Sander. First, wrap the 1/4” air connector (not included) with pipe thread seal tape before
threading into Air Inlet (#11). Connect the 3/8” I.D. Air Source Hose (not included) to the
Sander.
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 recommended air
pressure of 100 PSI.
3. Check the air connection for leaks. Then, disconnect the Sander from the air hose and
turn off the air compressor.
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
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 spe-
cially designed to filter out microscopic particles.
(California Health & Safety Code 25249.5, et seq. )
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.
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.
1/4” NPT
Sander
Operation

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SKU 90115
Operation (continued)
Paper Clamp (#41)
Clamp Lever
Sanding Pad (#44)
Air Inlet (#11)
FIGURE 1
Lever (#5)
Attaching Sandpaper. Sandpaper is available at Harbor Freight Tools. You may have to cut
it to size
1. Push down on the Clamp Lever and it will release the Paper Clamp (#41).
See FIGURE 1.
2. Insert one end of the sandpaper under the Paper Clamp (#41) and snap it closed. Repeat
the process with the rear Paper Clamp (#41).
3. Check that the sandpaper fits snugly against the Sanding Pad (#44). If not, repeat the
process above and pull the sandpaper more tightly against the Sanding Pad (#44).
4. Connect the sander to the air compressor.
5. Set the compressor to 90 PSI. Do not exceed 100 PSI.
6. If applicable, secure your workpiece. Use appropriate clamping devices if applicable.
7. Before starting the Sander, place it on the workpiece. If you start the Sander before you
contacttheworkpiece,theSandermay vibrateoutofyourhandonce youcontacttheworkpiece.
8. To operate, press the Lever (#5) with the palm of your hand while using your fingers to
grasp the Sander. See FIGURE 1. The further you press down on the Lever (#5), the faster
the Sander will rotate. For fine tuning the air pressure, adjust the Regulator Knob (#7).
9. Do not apply force or pressure. Allow the Sander to do the work for you.
Note: During operation, use your other hand to keep the air hose clear of the Sander.
10. When finished, release the Lever (#5) and disconnect the air hose from the Sander.
Grasp Here
(with fingers)
Note: The Sander must be disconnected from the air hose before attaching sandpaper.
Lever Pivot Area
Note: Sandpaper is not included.

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SKU 90115
NOTE: Some parts are listed and shown for illustration purposes only and are not available
individually as replacement parts.
PLEASE READTHE FOLLOWING CAREFULLY
THEMANUFACTURER AND/OR DISTRIBUTORHASPROVIDEDTHE PARTSDIAGRAMINTHIS
MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER NOR DISTRIBU-
TOR MAKES ANYREPRESENTATION ORWARRANTY OFANY 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/ORDISTRIBUTOREXPRESSLYSTATESTHATALLREPAIRS ANDPARTSREPLACEMENTS
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 TOTHE ORIGINAL PRODUCT OR REPLACEMENT PARTSTHERETO, OR ARISING
OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTSTHERETO.
Parts List
Part No. Description Qty. Part No. Description Qty.
1 Housing 1 24 0-ring Cylinder 1
2 Rubber Sheathing 1 25 Pin Cylinder 1
3 Housing Clamp 1 26 Axle 1
4 Screw 4 27 Key Tab 1
5 Lever 1 28 Washer 1
6 Lever Pin 1 29 Base 1
7 Regulator Knob 1 30 Spring Screw 13
8 Regulator Screw 4 31 Screw 8
9 E-Pin 1 32 Spacer 4
10 0-ring 1 33 Clamp Nut Screw 2
11 Air Inlet 1 34 Clamp Nut Screw 2
12 0-ring 1 35 Accentive Ring 1
13 Spring 1 36 Screw 1
14 0-ring 1 37 Bearing Housing 1
15 Spring 1 38 Bearing Gasket 1
16 0-ring 1 39 V-Gasket 1
17 Exhaust 1 40 Bearing Screw 1
18 E-Screw 1 41 Paper Clamp 2
19 Rear End Bearing 3 42 Base 1
20 Rear End Plate 2 43 Base Screw 12
21 Rotor 1 44 Sanding Pad 1
22 Rotor Blade 5 45 Cross Screw Cap 1
23 Cylinder 1

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SKU 90115
Assembly Drawing
Maintenance
1
44
28
30
3430
Warning! Disconnect the Sander from the air source before doing any maintenance.
1. Before each use check the sandpaper. If it is worn or torn, replace it.
2. Before each use apply a few drops of Pneumatic Tool Oil to the Lever pivot area.
See FIGURE 1 on page 5.
3. Wipe down the Sander after each use. Do not use solvents or abrasive chemicals to clean
the Sander.

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]