Fulton 3" x 4" Weld‑On Trailer Hinge Kit Fold‑Away Coupler 7,500 lbs Tongue Frame
Model: HDPW340300Fulton 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. Weld-on kits with raw finish are ideal for painting or galvanizing.
FOLD-AWAY™ WELD-ON HINGE KITS
- Ideal for OEMs, a convenient option for custom trailers to utilize a pivot system
- Delivers strength at the pivot point with precisely machined heavy-duty hinges made from die cast steel
- Provides superior performance with unique patent pending offset design
- Works with actuators and standard coupler applications, note gross trailer weight
- Only recommended for trailers made of steel
Specifcations:
- Application: 3" x 4" trailer tongue
- For use on trailers with material thickness between .188" and.120"
- Raw Finish ready for painting or galvanizing
- 7,500 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 trailor
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Product Details
- Brand: Fulton
- Model: HDPW340300
- UPC: 016118098334
- Includes: 3" x 4" Weld-On Trailer Hinge Kit
Description
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. Weld-on kits with raw finish are ideal for painting or galvanizing.
FOLD-AWAY™ WELD-ON HINGE KITS
- Ideal for OEMs, a convenient option for custom trailers to utilize a pivot system
- Delivers strength at the pivot point with precisely machined heavy-duty hinges made from die cast steel
- Provides superior performance with unique patent pending offset design
- Works with actuators and standard coupler applications, note gross trailer weight
- Only recommended for trailers made of steel
Specifcations:
- Application: 3" x 4" trailer tongue
- For use on trailers with material thickness between .188" and.120"
- Raw Finish ready for painting or galvanizing
- 7,500 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 trailor
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Fulton 3" x 4" Weld-On Trailer Hinge Kit Fold-Away Coupler 7,500 lbs Tongue Frame Install Notes
Installation and Maintenance Instructions for Heavy Duty Fold-Away™ Coupler/Bracket Kit
Specifications:
- Compatible with steel trailer tongues of the following dimensions:
- 2"x3", 3"x3", 3"x4", or 3"x5"
- Material thickness between 0.120"–0.188"
- Rated capacities based on Gross Trailer Weight Rating (GTWR) and pivot length.
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:
- Never exceed the rated capacity of the coupler, actuator, trailer, or pivot length.
- Attach safety chains behind the castings on the trailer tongue.
- Inspect all components (e.g., swing tongue, safety chains, lighting) before towing.
- Ensure all bolts, pins, and hardware are properly secured before towing.
Step-by-Step Instructions:
Preparation:
- Remove any wiring or brake lines from the trailer tongue.
- Support the trailer tongue with a jack stand behind the cutting area.
- Chock all wheels for stability.
Measuring and Cutting:
- Measure and mark the desired swing length from the coupler ball pocket.
- Ensure the mark is at least 5” from any obstruction.
- Cut the trailer tongue along the mark and remove sharp edges or burrs.
Safety Chain Installation:
- Drill 1/2” holes for safety chain bolts, 4” from the cut end and 1” from the bottom.
- Attach safety chains with 1/2” bolts and locknuts, torqued to 45 ft-lbs.
Castings Installation (Bolt-On):
- Place the male casting on the trailer tongue and secure with a clamp.
- Drill progressively larger holes (1/8” → 1/4” → 3/8” → 1/2”).
- Attach the casting with the supplied shoulder bolts and flange nuts. Torque to 75 ft-lbs.
Castings Installation (Weld-On):
- Weld the casting to the trailer tongue on all four sides using a 3/16” minimum fillet weld.
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 torqued to 50 ft-lbs.
- Insert the hinge pin and secure with a hairpin cotter.
- Verify the swing tongue operation.
Wiring and Chain Rerouting:
- Route wiring through the swing tongue, avoiding sharp edges.
- Attach the coupler using bolts torqued to 75 ft-lbs.
- Ensure safety chains are routed correctly and do not bind.
Maintenance:
- Inspect and maintain annually:
- Check welds and bolt torque.
- Grease pivot points and oil moving parts.
- Inspect safety chains and wiring for wear or damage.
Warranty Information:
- Limited Warranty:
- Bulldog and Fulton: 5 years.
- Other series: 1–3 years depending on the product line.
- Claims:
- Contact Cequent Trailer Products.
- Phone: 1-800-604-9466
- Address: 1050 Indianhead Dr., Mosinee, WI 54455
Additional Notes:
- Replacement parts are available through Cequent Trailer Products.
- Ensure all components comply with SAE J684 standards.
Installation and Maintenance Instructions for Heavy Duty Fold-Away™ Coupler/Bracket Kit
Specifications:
- Compatible with steel trailer tongues of the following dimensions:
- 2"x3", 3"x3", 3"x4", or 3"x5"
- Material thickness between 0.120"–0.188"
- Rated capacities based on Gross Trailer Weight Rating (GTWR) and pivot length.
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:
- Never exceed the rated capacity of the coupler, actuator, trailer, or pivot length.
- Attach safety chains behind the castings on the trailer tongue.
- Inspect all components (e.g., swing tongue, safety chains, lighting) before towing.
- Ensure all bolts, pins, and hardware are properly secured before towing.
Step-by-Step Instructions:
Preparation:
- Remove any wiring or brake lines from the trailer tongue.
- Support the trailer tongue with a jack stand behind the cutting area.
- Chock all wheels for stability.
Measuring and Cutting:
- Measure and mark the desired swing length from the coupler ball pocket.
- Ensure the mark is at least 5” from any obstruction.
- Cut the trailer tongue along the mark and remove sharp edges or burrs.
Safety Chain Installation:
- Drill 1/2” holes for safety chain bolts, 4” from the cut end and 1” from the bottom.
- Attach safety chains with 1/2” bolts and locknuts, torqued to 45 ft-lbs.
Castings Installation (Bolt-On):
- Place the male casting on the trailer tongue and secure with a clamp.
- Drill progressively larger holes (1/8” → 1/4” → 3/8” → 1/2”).
- Attach the casting with the supplied shoulder bolts and flange nuts. Torque to 75 ft-lbs.
Castings Installation (Weld-On):
- Weld the casting to the trailer tongue on all four sides using a 3/16” minimum fillet weld.
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 torqued to 50 ft-lbs.
- Insert the hinge pin and secure with a hairpin cotter.
- Verify the swing tongue operation.
Wiring and Chain Rerouting:
- Route wiring through the swing tongue, avoiding sharp edges.
- Attach the coupler using bolts torqued to 75 ft-lbs.
- Ensure safety chains are routed correctly and do not bind.
Maintenance:
- Inspect and maintain annually:
- Check welds and bolt torque.
- Grease pivot points and oil moving parts.
- Inspect safety chains and wiring for wear or damage.
Warranty Information:
- Limited Warranty:
- 5 years for certain products.
- 1–3 years for other product lines, depending on specifications.
- 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.
- For technical support and assistance, our team of experts is available to help. You can reach our tech support by visiting www.trailerjacks.com or calling 877-869-6690.
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