58790 Triple-Ball Adjustable 6 Inch Drop 4 Inch Rise Hitch
Product Information
The Triple Ball Adjustable 6 Drop/ 4 Rise Hitch, model number
58790, is a trailer hitch designed for towing purposes. It is
compatible with three different ball sizes: 1-7/8 inches, 2 inches,
and 2-5/16 inches. The hitch has a gross trailer weight capacity of
5,000 lbs, 7,500 lbs, and 10,000 lbs, depending on the ball size
used. It also has a tongue weight capacity of 500 lbs, 750 lbs, and
1,000 lbs, respectively. The hitch is classified as Class III and
IV.
Product Usage Instructions
Before using the Triple Ball Adjustable 6 Drop/ 4 Rise Hitch,
please read the entire Owner’s Manual & Safety Instructions
provided with the product. Failure to do so may result in serious
injury.
Assembly
- Ensure that all parts are intact and undamaged upon unpacking
the product. If any parts are missing or broken, contact customer
support immediately. - Insert the Shank Assembly (3) into the receiver hitch and
install Hitch Pin (1) and Clip (2). Ensure that both pins are
engaged in two holes of the Shank Assembly. - Tighten Anti-Rattle Bolt (5) to eliminate movement between the
Shank Assembly and Receiver Tube Assembly. Flip Shank Assembly over
for rise position.
Safety Precautions
When using the Triple Ball Adjustable 6 Drop/ 4 Rise Hitch,
follow these important safety precautions:
- Do not exceed individual ball towing capacities as indicated in
the product specifications table. - Wear ANSI-approved safety goggles and heavy-duty work gloves
during set up. - Read trailer hitch and towing vehicle manuals before
installation and use. - Use safety chain when pulling trailer.
- Ensure that all hitch pins and clips are installed before
use. - Frequently check hitch/coupler connection and condition of
parts before and during use. Do not use if parts are loose or
damaged. Do not use if the hitch ball does not properly fit the
trailer coupler. - Assemble the product only according to the instructions
provided. Improper assembly can create hazards. - Keep the assembly area clean and well-lit.
- Do not allow bystanders near the assembly area during set
up. - Do not assemble when tired or under the influence of alcohol,
drugs, or medication. - The weight capacity and other product capabilities apply to a
properly and completely assembled product only. - This product is not a toy. Do not allow children to play with
or near this item. - Use the product as intended only.
- Inspect the product before every use. Do not use if parts are
loose or damaged. - Maintain product labels and nameplates. These carry important
safety information. If unreadable or missing, contact Harbor
Freight Tools for a replacement.
If you have any technical questions or concerns about the Triple
Ball Adjustable 6 Drop/ 4 Rise Hitch, please call 1-888-866-5797 or
email [email protected] for assistance.
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 near the assembly diagram (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.
23d
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TRIPLE BALL ADJUSTABLE 6″ DROP/ 4″ RISE HITCH
Visit our website at: http://www.harborfreight.com Email our technical support at: [email protected]
58790
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© 2023 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.
Specifications
Ball Size 1-7/8 2 2-5/16
Gross Trailer Weight Capacity 5,000lb 7,500lb 10,000lb
Tongue Weight Capacity 500lb 750lb 1,000lb
Class
III IV IV
IMPORTANT SAFETY INFORMATION
1. Do not exceed individual ball towing capacities, as shown in table above. Be aware of dynamic loading! Sudden starting or jerking against load may briefly create excess load causing product failure.
2. Wear ANSI-approved safety goggles and heavy-duty work gloves during set up.
3. Read trailer hitch and towing vehicle manuals before installation and use.
4. Use safety chain when pulling trailer.
5. All hitch pins and clips must be installed before use.
6. Frequently check hitch/coupler connection and condition of parts before and during use. Do not use if parts loose or damaged. Do not use if hitch ball does not properly fit trailer coupler.
7. Assemble only according to these instructions. Improper assembly can create hazards.
8. Keep assembly area clean and well lit.
9. Keep bystanders out of the area during assembly.
10. Do not assemble when tired or when under the influence of alcohol, drugs or medication.
11. Weight capacity and other product capabilities apply to properly and completely assembled product only.
12. This product is not a toy. Do not allow children to play with or near this item.
13. Use as intended only.
14. Inspect before every use; do not use if parts are loose or damaged.
15. Maintain product labels and nameplates. These carry important safety information. If unreadable or missing, contact Harbor Freight Tools for a replacement.
Page 2
For technical questions, please call 1-888-866-5797.
58790
Installation 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.
Note: Trailer must be level when hitched to tow vehicle. Use rise position or drop position to achieve the desired height.
1. Insert Shank Assembly (3) into the receiver hitch. Install Hitch Pin (1) and Clip (2).
Note: Both Pins must be engaged in two holes of the Shank Assembly.
4. Tighten Anti-Rattle Bolt (5) to eliminate movement between the Shank Assembly and Receiver Tube Assembly.
Note: Flip Shank Assembly over for rise position.
Note: Coupler must match ball size exactly.
2. Loosen Anti-Rattle Bolt (5).
3. Secure Receiver Tube Assembly (6) to Shank Assembly (3) using two Hitch Pins (1) and two Clips (2).
5. Insert Ball Mount Assembly (4) with required ball size pointing upward, into Receiver Tube Assembly (6). Secure with Hitch Pin (1) and Clip (2).
Note: All pins must be installed before use.
Note: Attach safety chains when pulling trailer.
Parts List and Diagram
Part
Description
Qty
1 Hitch Pin
4
2 Clip
4
3 Shank Assembly
1
4 Ball Mount Assembly
1
5 Anti-Rattle Bolt
1
6 Receiver Tube Assembly
1
Record Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.
Note: Some parts are listed and shown for illustration purposes only, and are not available individually as replacement parts. Specify UPC 193175446640 when ordering parts.
58790
For technical questions, please call 1-888-866-5797.
Page 3
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.
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26677 Agoura Road · Calabasas, CA 91302 · 1-888-866-5797
