Fulton 3" x 3" Bolt‑On Trailer Hinge Kit Fold‑Away Coupler 5,000 lbs Tongue Frame
Model: HDPB330101FOLD-AWAY™ HINGE KITS
Fulton High Performance Series Fold-Away™ hinge kits are ideal for boat trailers that can be just a little too long to fit inside smaller garages. These high quality, precision engineered products provide options for solving this common problem.
FOLD-AWAY™ BOLT-ON HINGE KITS
- Converts standard trailer tongues into fold-away configurations while preserving the existing coupler
- Delivers strength at the pivot point with precisely machined heavy duty hinges made from die cast steel
- Easy to install bolt-on application with complete instruction manual
- Includes all mounting hardware
- Only recommended for trailers with steel tongue
Specifcations:
- Application: 3" x 3" trailer tongue
- For use on trailers with material thickness between .188" and.120"
- Z-Max 600 hour clear zinc finish
- 5,000 lbs Capacity
- 5-Year warranty
Popular applications include canoe kayak Shorland'r Shorelander Karavan Boston Watercarft Whaler Dauntless Crownline Jet Ski and many many other non aluminum trailers
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Product Details
- Brand: Fulton
- Model: HDPB330101
- UPC: 783192015723
- Includes: 3" x 3" Bolt-On Trailer Hinge Kit
FOLD-AWAY™ HINGE KITS
Fulton High Performance Series Fold-Away™ hinge kits are ideal for boat trailers that can be just a little too long to fit inside smaller garages. These high quality, precision engineered products provide options for solving this common problem.
FOLD-AWAY™ BOLT-ON HINGE KITS
- Converts standard trailer tongues into fold-away configurations while preserving the existing coupler
- Delivers strength at the pivot point with precisely machined heavy duty hinges made from die cast steel
- Easy to install bolt-on application with complete instruction manual
- Includes all mounting hardware
- Only recommended for trailers with steel tongue
Specifcations:
- Application: 3" x 3" trailer tongue
- For use on trailers with material thickness between .188" and.120"
- Z-Max 600 hour clear zinc finish
- 5,000 lbs Capacity
- 5-Year warranty
Popular applications include canoe kayak Shorland'r Shorelander Karavan Boston Watercarft Whaler Dauntless Crownline Jet Ski and many many other non aluminum trailers
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Fulton 3" x 3" Bolt-On Trailer Hinge Kit Fold-Away Coupler 5,000 lbs Tongue Frame Install Notes
Installation and Maintenance Instructions for Heavy Duty Fold-Away™ Coupler/Bracket Kit
Specifications:
- Compatible with steel trailer tongues with the following dimensions:
- 2"x3", 3"x3", 3"x4", 3"x5" (outside dimensions)
- Material thickness: 0.120"–0.188"
- Rated for maximum pivot lengths and GTWR (Gross Trailer Weight Rating) based on tongue dimensions and load specifications.
Tools Required:
- 1/2” Drive Ratchet
- 15/16” Open-End Wrench & Socket
- 3/4” Open-End Wrench & Socket
- 7/16” Socket (for Torx bit)
- Metal Cutting Saw
- 1/2” Chuck Drill
- Drill Bits: 1/8”, 1/4”, 3/8”, & 1/2”
- Torque Wrench (Capable of 80 ft-lbs)
- Tape Measure
- Safety Glasses
- Gloves
- Center Punch
- Clamp
- Square
- Hammer
- Jack Stand
- Wheel Chocks
Safety Notes:
- Do not exceed rated capacities for the coupler, actuator, trailer, or pivot length.
- Never position your body beneath the product or the load it supports.
- Ensure safety chains are attached behind the castings on the trailer tongue, not to the coupler or swing tongue.
- Check all components (e.g., swing tongue, safety chains, lighting) before towing.
Step-by-Step Instructions:
Preparation:
- Read all safety instructions for tools being used.
- Support the trailer tongue with a jack stand behind the cutting area.
- Chock all wheels to ensure stability.
- Remove any wiring or brake lines from the trailer tongue.
Measuring and Cutting:
- Measure the desired swing length from the center of the coupler ball pocket backward.
- Mark the cut line, ensuring at least 5" of clearance from obstructions.
- Cut along the marked line, removing any sharp edges or burrs.
Safety Chain Installation:
- Mark and drill 1/2” holes for safety chain bolts 4” from the cut end and 1” up from the bottom.
- Secure chains using separate 1/2” bolts and locknuts, torqued to 45 ft-lbs.
Castings Installation (Bolt-On):
- Position the male casting on the trailer tongue and secure temporarily with a clamp.
- Drill mounting holes progressively (1/8”, 1/4”, 3/8”, 1/2”).
- Attach the casting using the supplied hardware and torque all bolts to 75 ft-lbs.
Castings Installation (Weld-On):
- Position the casting on the trailer tongue and ensure it is straight.
- Weld all four sides using a 3/16” minimum fillet weld.
- Proceed with the assembly as described in the bolt-on instructions.
Wiring and Chain Rerouting:
- Route the wiring through the swing tongue to prevent damage.
- Attach the coupler using the provided bolts and torque to 75 ft-lbs.
- Secure safety chains to prevent dragging or binding.
Final Assembly:
- Attach the swing tongue to the trailer tongue by mating the castings together.
- Apply grease to the pivot bolt and secure with a locknut (torque to 50 ft-lbs).
- Insert the hinge pin and secure it with a hairpin cotter.
- Check the operation of the swing mechanism.
Maintenance:
- Annually:
- Inspect welds, bolts, and fasteners for wear or damage.
- Grease the pivot points and apply light oil to moving parts.
- Check safety chain condition and replace as needed.
Warranty Information:
- Limited Warranty:
- 5 years for premium products.
- 3 years for standard products.
- 1 year for value products.
- Exclusions:
- Normal wear and tear, misuse, overloading, or improper installation.
- For complete warranty instructions, please download the full installation PDF.
Additional Notes:
- Attention: This is a summary of the installation procedure. For complete installation instructions, including diagrams and detailed information from the manufacturer, please download the full installation PDF.
Technical Support:
For technical support and assistance, our team of experts is available to help.
Visit www.trailerjacks.com or call 877-869-6690.
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