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WHEEL BALANCER
39741
ASSEMBLY AND OPERATING INSTRUCTIONS
Visit our website at: http://www.harborfreight.com
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Copyright© 1998 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.
Diagrams within this manual may not be drawn proportionally. Due to continuing improvements, actual product may
differ slightly from the product described herein. Tools required for assembly and service may not be included.
For technical questions or replacement parts, please call 1-800-444-3353.
Revised Manual 09k
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Specifications
Wheel Balancer includes: Base, Balancer, and Leadscrew
Overall Dimensions: 22-5/8" x 11-7/8" x 11-7/8"
Base Diameter: 11-7/8"; Center Rod diameter: .813"
Hub Diameter: 1.495"; Tool Weight: 13.40 Lbs.
Designed for use: Light Truck and Automobile Wheels
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 product!
1. Do not use the Wheel Balancer until properly trained. This product is intended for use
by properly trained and experienced personnel only. If you are not familiar with the proper
and safe operation of a wheel balancer, do not use until trained.
2. Keep work area clean. Cluttered areas invite injuries.
3. 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.
4. Keep children away. Children must never be allowed in the work area. Do not let them
handle machines, tools, or extension cords.
5. 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.
6. Do not force tool. It will do the job better and more safely at the rate for which it was
intended. Do not use inappropriate attachments in an attempt to exceed the tool capacity.
7. 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.
8. 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. Wear an ANSI approved
dust mask or respirator when working around metal, wood, and chemical dusts and mists.
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9. Do not overreach. Keep proper footing and balance at all times. Do not reach over or
across running machines.
10. Maintain tools with care. Keep tools sharp and clean for better and safer performance.
Follow instructions for lubricating and changing accessories. Inspect tool cords 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.
11. Stay alert. Watch what you are doing; use common sense. Do not operate any tool when
you are tired.
12. 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.
13. 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.
14. 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.
Note: The warnings and instructions contained in this instruction
manual cannot cover all possible conditions and situations that may
occur when using this product. It must be understood that common
sense and caution are factors which cannot be built into this product.
These factors must be supplied by the person operating the tool.
Unpacking
When unpacking, check the Parts Diagram and Part Number Listing on page 5 to make
sure all parts are included. If any parts are missing or broken, please call Harbor Freight Tools
at the number on the cover of this manual.
Assembling the Wheel Balancer
The Wheel Balancer is easily assembled by following the steps shown below. Part numbers
used below refer to the Parts Diagram and Part Number Listing on page 5.
1. Insert the threaded end of the Shaft (#9) into the Base (#12). Use Flat Washer (#11), Lock
Washer (#13) and two Nuts (#10) to tightly secure the Shaft - see the Parts Diagram for proper
assembly order of hardware.
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2. The Balancing Cone Set (#7) rests on top of the tip located on top of the Shaft (#9). Make
sure the tip of the Shaft (#9) fits into the recessed area on the underside of the Balancing Cone
Set. When properly fitted, the bubble on the Level Bubble (#4) should be perfectly centered.
Note: When finding a location for the Wheel Balancer, use a level to make sure this tool
is positioned on a flat, level surface.
3. With the Wheel Balancer in place, check the balance of the Flange Set (#1). Lightly tilt the
Flange Set and let it come to rest. It should easily rock back and forth and come to rest with
the bubble centered in the Level Bubble.
Using the Wheel Balancer
1. Use a wheel clipper tool to remove all old lead wheel weights on the wheel to be balanced.
2. Lay the rim of the wheel to be balanced down over the top of the Flange Set (#1). Make
sure the wheel rim is evenly distributed on top of the Flange Set (#1). If the wheel is not properly balanced, you will notice that the bubble inside the Level Bubble (#4) is not centered and
rests to one side of the Level Bubble (#4).
3. To balance the wheel, lead wheel weights must be added to the side of the rim where the
off-center bubble rests. Place one or more lead wheel weights in place to bring the bubble
back to the center of the Level Bubble (#4). When the bubble is centered the wheel is balanced. Tap the lead wheel weights to secure them to the rim.
4. Once balanced, remove the wheel from the Flange Set (#1).
Note: Wheel Clipper Tool is available from Harbor Freight Tools.
Rev 2000f
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Part Number Listing and Parts Diagram
Part # Description Qty
1 Flange Set 1
2 Spring 4
3 Screw ST2.2x10 3
4 Level Bubble 1
5 Washer 1
6 Bubble Spring 1
7 Balancing Cone Set 1
8 Retaining Pin 2
9 Shaft 1
10 Nut M20x1.5A 2
11 Flat Washer 1
12 Base 1
13 Lock Washer 1
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LIMITED 1 YEAR 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 one year from the date of purchase (90
days if used by a professional contractor or if used as rental equipment). This warranty does not
apply to damage due directly or indirectly, to misuse, abuse, negligence or accidents, repairs or
alterations outside our facilities, 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 verifies 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 specific 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 • (800) 444-3353
#39741 For technical questions, please call 1-800-444-3353. Page 6
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