Harbor Freight 91939 Users Manual Wheel Balancer

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Aluminum Wheel BalancerAluminum Wheel Balancer

Aluminum Wheel BalancerAluminum Wheel Balancer

Aluminum Wheel Balancer

with Levelwith Level

with Levelwith Level

with Level

ASSEMBLY AND OPERATING INSTRUCTIONS

3491 Mission Oaks Blvd., Camarillo, CA 93011

Visit our Web site at http://www.harborfreight.com

Copyright © 2004 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

91939

SKU 91939 Page 2

Specifications

This tool is very useful for balancing wheels with hub diameters from 2 to 5-1/2”. The

bullseye bubble level will tell you immediately whether a wheel is in balance, and will

guide you in placing the appropriate weights (not included) to achieve balance. This

simple, sturdy tool requires no power, and may be used on any hard, level surface.

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 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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SKU 91939 Page 3

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 an ANSI approved dust mask or 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 reach

over or across running machines.

9. Maintain tools with care. Keep tools maintained and clean for better and safer

performance. Follow instructions for lubricating and changing accessories. The

handles must be kept clean, dry, and free from oil and grease at all times.

10. Remove adjusting keys and wrenches. Check that keys and adjusting

wrenches are removed from the tool or machine work surface before operating.

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.

15. Maintenance. For your safety, service and maintenance should be performed

regularly by a qualified technician.

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.

SKU 91939 Page 4

Unpacking

When unpacking, please compare with parts list to be sure that 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.

Assembly

1. Install all three Base Bolts (F) into the Base

(E) approximately 1/2 way. These bolts will be used

to level the Balancer on your floor. NOTE: For best

results, you should use the Balancer on a hard

level surface, such as a cement garage floor.

2. Thread one of the Nuts (D) approximately

2” up the Shaft (B). Insert the Shaft (B) through

the hole in the Base (E) as in the assembly diagram.

Thread the second Nut (D) onto the shaft, and

tighten to lock the Shaft (B) onto the Base (E).

3. Place the Hub Support (C) onto the

Shaft (B).

4. Place the Bubble Level (A) onto the

top of the Hub Support (C).

5. Level the Wheel Balancer relative to your

floor by adjusting the Base Bolts (F) up

or down, until the bubble in the Bubble

Level (A) is centered in the bullseye

marked in the center of the level.

SKU 91939 Page 5

Operation

1. To operate your Wheel Balancer, first ensure that it is properly assembled and

level with your floor as discussed above.

2. Remove the Bubble Level (A) from

the top of the Wheel Balancer to protect it

from possible damage when placing the

wheel on the balancer.

NOTE: Before balancing, remove all

weights from the wheel rim, and assure

that the wheel, tire and stem are in finished

condition as they will be installed on the

vehicle.

3. Place your wheel horizontally with

the valve stem up on the balancer with the

top of the Hub Support (C) protruding

through the center of the wheel. Be sure

that the wheel is level on the Hub Support

(C) by adjusting the alignment of the wheel

to the concentric circles marked around the

Hub Support (C).

4. Replace the Bubble Level (A) on top of the Hub Support (C).

5. The Bubble Level (A) will indicate an out-of-balance wheel by showing the bubble

out of the center of the bullseye. The bubble will move toward the “light” side of

the wheel.

6. Balance the wheel by placing wheel weights of various sizes (not included) on

the rim side indicated as “light” by the Bubble Level (A). Careful placement of

weights will result in the wheel being balanced. The bubble in the Bubble Level

(A) will be centered in the bullseye when the wheel is balanced.

WARNING: When balancing, only place the weights where they are needed. DO NOT

hammer the weights in place while the wheel is on the Balancer. This will result

in damage to the Balancer. Mark the position of the weights, and hammer them on to

the rim after the wheel has been removed from the Balancer.

7. Recheck your work after you have installed the weights. Replace the wheel on

the balancer with the valve stem up. Check to ensure that the bubble is centered

in the bullseye. If it is not, remove the wheel from the balancer, remove the

weights from the wheel, and start again from step 3 above. For best results it is

inportant that your wheels are properly balanced before using them on your

vehicle.

Bubble Level (A)

SKU 91939 Page 6

Maintenance

1. If the Wheel Balancer is to be used only occasionally, you should disassemble

it and store it in a dry, secure place between uses.

2. If the Wheel Balancer will remain on your shop floor, protect it from damage and

hard use. It is a precision tool which may be easily damaged by being banged

around.

3. The Bubble Level (A) is especially subject to damage. When not in use, remove

it from the Balancer and store in a safe place. To protect it from accidental

damage, always remove the Bubble Level (A) from the Balancer when placing

the wheel on the Balancer.

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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SKU 91939 Page 7

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.

Assembly Drawing