Maddox MMTTC-24 Assembly instructions

Visit our website at: http://www.harborfreight.com
Email our technical support at: [email protected] 58758
Owner’s Manual & Safety Instructions
Save This Manual Keep this manual for the safety warnings and precautions, assembly,
operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the back
of the manual (or month and year of purchase if product has no number). Keep this manual and the receipt
in a safe and dry place for future reference. 22b
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1-888-866-5797 as soon as possible.
Copyright©2021 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.
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.

Page 2 For technical questions, please call 1-888-866-5797. Item 58758
Specifications
Tire Size 19-1/2″, 22-1/2″, and 24-1/2″(tubeless)

Page 3For technical questions, please call 1-888-866-5797.Item 58758
Important Safety Information
1. Wear ANSI-approved safety goggles
and heavy-duty work gloves during
assembly, mounting and use.
2. Do not modify Manual Truck Tire
Changer to perform tasks for
which it was not designed.
3. Use only with accessories included
with the Manual Truck Tire Changer.
4. Mount only to a secure, level surface
able to support weight of Manual Truck
Tire Changer and tire assembly.
5. Keep work area clean and well lit.
6. Keep bystanders out of
the area during use.
7. Do not use when tired or when
under the influence of drugs,
medication or alcohol.
8. This product is not a toy. Do not allow
children to play with or near this item.
9. Inspect before every use; do not use
if parts are loose or damaged.
10. Maintain product labels and
nameplates. These carry
important safety information.
If unreadable or missing, contact
Harbor Freight Tools for a replacement.
Functions
Dismount Tool
Mount Tool
Bead Holder

Page 4 For technical questions, please call 1-888-866-5797. Item 58758
Operation Instructions
Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the
beginning of this document including all text under subheadings therein
before set up or use of this product.
Removing Tire
1. Set tire and rim on a
secure level surface.
2. Remove valve core.
3. Break both beads on tire.
4. Place Dismount Tool between
upper bead and upper rim.
5. Gently apply pressure downward on
Dismount Tool until seated between
upper bead and upper rim.
6. Support rim and pull Handle
across wheel to opposite side to
demount portion of upper bead.
7. Rotate Dismount Tool and
repeat Step 6 until upper bead is
dismounted from upper rim.
8. Pull Handle back to starting side
as close to ground as possible.
9. Place Dismount Tool between
lower bead and upper rim.
10. Ensure Dismount Tool is seated
between lower bead and upper rim.
11. Support rim and pull Handle
across wheel to opposite side to
demount portion of lower bead.
12. Rotate Dismount Tool and repeat
Step 11 until lower bead is
dismounted from upper rim.
13. Remove tire from rim.

Page 5For technical questions, please call 1-888-866-5797.Item 58758
Installing Tire
1. Clean tire and rim thoroughly.
2. Inspect tire and rim for damage.
3. If damaged, repair or
replace as necessary.
4. Apply appropriate Lubrication
(not included) to both beads
on outer portion of tire.
5. Consider proper direction of
tire before placing on rim.
6. Set tire and rim on a
secure level surface.
7. Place tire on rim.
8. Place Mount Tool between
upper rim and lower bead.
9. Support rim and pull Handle away from
rim to mount portion of lower bead.
10. Rotate Mount Tool and repeat Step 9
until lower bead is over upper rim lip.
11. Place Bead Holder on upper rim
lip between upper bead and rim.
12. Place Mount Tool between
upper rim and upper bead on
opposite side of Bead Holder.
Bead Holder
13. Support rim and pull Handle away from
rim to mount portion of upper bead.
14. Rotate Mount Tool and repeat Step 13
until upper bead is over upper rim lip.
15. Remove Bead Holder and Mount Tool.
16. Install valve core.
17. Tire is ready to be inflated.

Page 6 For technical questions, please call 1-888-866-5797. Item 58758
Maintenance Instructions
1. After each use, wipe any excess
bead lubricant off of Manual
Truck Tire Changer tools.
2. Regularly inspect Manual Truck
Tire Changer tools to ensure that
all connections are secure.
Record Product’s Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.
Note: Replacement parts are not available. Refer to UPC 193175446275.

Page 7For technical questions, please call 1-888-866-5797.Item 58758
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY
DIAGRAM IN THIS DOCUMENT AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER
OR 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.

Limited 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 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.
26677 Agoura Road • Calabasas, CA 91302 • 1-888-866-5797