Aluminum Wheel Balancer
with Level
91939
ASSEMBLY AND OPERATING INSTRUCTIONS
3491 Mission Oaks Blvd., Camarillo, CA 93011
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 FreightTools.
For technical questions and replacement parts, please call 1-800-444-3353
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 FreightTools.
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 3
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 theWheel 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 4
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
HubSupport(C).
Bubble Level (A)
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.
SKU 91939
Page 5
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 theWheel 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
Part #
Description
Bubble Level
Q'ty.
A
B
C
D
E
F
1
1
1
2
1
3
Shaft m10 x 155
Hub Support
Nut m10
Bottom
Base Bolts m6 x 20
NOTE: Some parts are listed and shown for illustration purposes only and are not
available individually as replacement parts.
SKU 91939
Page 6
Assembly Drawing
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.
SKU 91939
Page 7
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