CURT 13579 Class 3 Square Hitch Receiver Instruction Manual
- June 13, 2024
- Curt
Table of Contents
CURT 13579 Class 3 Square Hitch Receiver Instruction Manual
Level of Difficulty
Easy
Installation difficulty levels are based on time and effort involved and may vary depending on the installer level of expertise, condition of the vehicle and proper tools and equipment.
Weight Carrying Capacity
Gross trailer weight (GTW): 3,500 lbs.
Tongue weight (TW): 350 lbs.
Parts List
Item Qty: Description
1: 4:Hex bolt, M12 x 1.25
2: 4: Conical-toothed washer, 1/2
Tools Required
Ratchet: Flathead screwdriver
Torque wrench : Exhaust isolator removal tool
Socket, 19mm: —
For a tools reference guide visit
curtmfg.com/trailer-hitch-installation
WARNING
Never exceed the vehicle manufacturer’s recommended towing capacity
Product Photo
NOTICE
Visit www.curtmfg.com for a full-color copy of this
instruction manual, as well as helpful videos, guides and much more!
Before you begin installation, read all instructions thoroughly.
Proper tools will improve the quality of installation and reduce the time required.
This installation requires:
- Temporarily lower exhaust
- No drilling required
- No trimming required
Periodic inspection of the trailer hitch should be performed to ensure all mounting hardware remains tight and structural components are secure.
To help prevent damage to the product or vehicle, refer to the specified torque specifications when securing hardware during the installation process.
SAFETY INSTRUCTIONS
Safety glasses should be worn at all times while installing this product
Product Registration and Warranty
CURT stands behind our products with industry-leading warranties. To get copies of the product warranties, register your purchase or provide feedback, visit: warranty.curtgroup.com/surveys
ASSEMBLY
Parts| List|
---|---|---
Item| Qty| Description
1| 4| Hex bolt, M12 x 1.25
2| 4| Conical-toothed washer, 1/2
CONICAL TOOTHED WASHER ORIENTATION
WELDNUT CLEANING
To remove debris from walnuts in frame, spary lubricant or compressed air into
the hole.
For heavy debris, use a wire brush.
Take care not to damage threads.
Step 1
Remove the four plastic plugs from the side of the frame rails, two on each
side.
Step 2
Note: Some models may require temporarily lowering of the exhaust. To lower
the exhaust, unhook the three rearmost exhaust hangers. Support the exhaust
prior to prevent damage or injury
Step 3
Raise the hitch into position and install the four hex bolts (#1) and four
conical-toothed washers (#2).
Step 4
Torque all M12 fasteners to 86 ft-lbs.
Step 5
Raise the exhaust back into position and reinstall the isolators if lowered in
step 2.
Final Installed Image
TOWING BASICS & SAFETY INFORMATION
For information on safely towing your trailer, visit curtmfg.com/understanding-towing.
References
- CURT: Trailer Hitches - Trailer Wiring - 5th Wheel - Gooseneck
- 8 Easy Steps - Trailer Hitch Installation How-To
- Towing Guide, How-tos, References & Glossary
- CURT: Trailer Hitches - Trailer Wiring - 5th Wheel - Gooseneck